Fixed protocol omission.

.gitignore

@@ -1,6 +1,8 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 
+SharpChat.Common/version.txt
+
 # User-specific files
 *.suo
 *.user

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "hamakaze"]
+	path = hamakaze
+	url = https://git.flash.moe/flash/hamakaze.git

Hamakaze/Headers/HttpAcceptEncodingHeader.cs

@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace Hamakaze.Headers {
-    public class HttpAcceptEncodingHeader : HttpHeader {
-        public const string NAME = @"Accept-Encoding";
-
-        public override string Name => NAME;
-        public override object Value => string.Join(@", ", Encodings);
-
-        public HttpEncoding[] Encodings { get; }
-
-        public HttpAcceptEncodingHeader(string encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-        ) { }
-
-        public HttpAcceptEncodingHeader(string[] encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Select(HttpEncoding.Parse)
-        ) {}
-
-        public HttpAcceptEncodingHeader(IEnumerable<HttpEncoding> encodings) {
-            Encodings = (encodings ?? throw new ArgumentNullException(nameof(encodings))).ToArray();
-        }
-    }
-}

Hamakaze/Headers/HttpConnectionHeader.cs

@@ -1,17 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpConnectionHeader : HttpHeader {
-        public const string NAME = @"Connection";
-
-        public override string Name => NAME;
-        public override object Value { get; }
-
-        public const string CLOSE = @"close";
-        public const string KEEP_ALIVE = @"keep-alive";
-
-        public HttpConnectionHeader(string mode) {
-            Value = mode ?? throw new ArgumentNullException(nameof(mode));
-        }
-    }
-}

Hamakaze/Headers/HttpContentEncodingHeader.cs

@@ -1,20 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpContentEncodingHeader : HttpHeader {
-        public const string NAME = @"Content-Encoding";
-
-        public override string Name => NAME;
-        public override object Value => string.Join(@", ", Encodings);
-
-        public string[] Encodings { get; }
-
-        public HttpContentEncodingHeader(string encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-        ) { }
-
-        public HttpContentEncodingHeader(string[] encodings) {
-            Encodings = encodings ?? throw new ArgumentNullException(nameof(encodings));
-        }
-    }
-}

Hamakaze/Headers/HttpContentLengthHeader.cs

@@ -1,30 +0,0 @@
-using System;
-using System.IO;
-
-namespace Hamakaze.Headers {
-    public class HttpContentLengthHeader : HttpHeader {
-        public const string NAME = @"Content-Length";
-
-        public override string Name => NAME;
-        public override object Value => Stream?.Length ?? Length;
-
-        private Stream Stream { get; }
-        private long Length { get; }
-
-        public HttpContentLengthHeader(Stream stream) {
-            Stream = stream ?? throw new ArgumentNullException(nameof(stream));
-            if(!stream.CanRead || !stream.CanSeek)
-                throw new ArgumentException(@"Body must readable and seekable.", nameof(stream));
-        }
-
-        public HttpContentLengthHeader(long length) {
-            Length = length;
-        }
-
-        public HttpContentLengthHeader(string length) {
-            if(!long.TryParse(length, out long ll))
-                throw new ArgumentException(@"Invalid length value.", nameof(length));
-            Length = ll;
-        }
-    }
-}

Hamakaze/Headers/HttpContentTypeHeader.cs

@@ -1,20 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpContentTypeHeader : HttpHeader {
-        public const string NAME = @"Content-Type";
-
-        public override string Name => NAME;
-        public override object Value => MediaType.ToString();
-
-        public HttpMediaType MediaType { get; }
-
-        public HttpContentTypeHeader(string mediaType) {
-            MediaType = HttpMediaType.Parse(mediaType ?? throw new ArgumentNullException(nameof(mediaType)));
-        }
-
-        public HttpContentTypeHeader(HttpMediaType mediaType) {
-            MediaType = mediaType;
-        }
-    }
-}

Hamakaze/Headers/HttpCustomHeader.cs

@@ -1,13 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpCustomHeader : HttpHeader {
-        public override string Name { get; }
-        public override object Value { get; }
-
-        public HttpCustomHeader(string name, object value) {
-            Name = NormaliseName(name ?? throw new ArgumentNullException(nameof(name)));
-            Value = value;
-        }
-    }
-}

Hamakaze/Headers/HttpDateHeader.cs

@@ -1,18 +0,0 @@
-using System;
-using System.Globalization;
-
-namespace Hamakaze.Headers {
-    public class HttpDateHeader : HttpHeader {
-        public const string NAME = @"Date";
-
-        public override string Name => NAME;
-        public override object Value { get; }
-
-        public DateTimeOffset DateTime { get; }
-
-        public HttpDateHeader(string dateString) {
-            Value = dateString ?? throw new ArgumentNullException(nameof(dateString));
-            DateTime = DateTimeOffset.ParseExact(dateString, @"r", CultureInfo.InvariantCulture);
-        }
-    }
-}

Hamakaze/Headers/HttpHeader.cs

@@ -1,41 +0,0 @@
-using System;
-using System.Globalization;
-
-namespace Hamakaze.Headers {
-    public abstract class HttpHeader {
-        public abstract string Name { get; }
-        public abstract object Value { get; }
-
-        public override string ToString() {
-            return string.Format(@"{0}: {1}", Name, Value);
-        }
-
-        public static string NormaliseName(string name) {
-            if(string.IsNullOrWhiteSpace(name))
-                return string.Empty;
-
-            string[] parts = name.ToLowerInvariant().Split('-', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-            for(int i = 0; i < parts.Length; ++i)
-                parts[i] = CultureInfo.InvariantCulture.TextInfo.ToTitleCase(parts[i]);
-            return string.Join('-', parts);
-        }
-
-        public static HttpHeader Create(string name, object value) {
-            return name switch {
-                HttpTeHeader.NAME => new HttpTeHeader(value.ToString()),
-                HttpDateHeader.NAME => new HttpDateHeader(value.ToString()),
-                HttpHostHeader.NAME => new HttpHostHeader(value.ToString()),
-                HttpServerHeader.NAME => new HttpServerHeader(value.ToString()),
-                HttpUserAgentHeader.NAME => new HttpUserAgentHeader(value.ToString()),
-                HttpKeepAliveHeader.NAME => new HttpKeepAliveHeader(value.ToString()),
-                HttpConnectionHeader.NAME => new HttpConnectionHeader(value.ToString()),
-                HttpContentTypeHeader.NAME => new HttpContentTypeHeader(value.ToString()),
-                HttpContentLengthHeader.NAME => new HttpContentLengthHeader(value.ToString()),
-                HttpAcceptEncodingHeader.NAME => new HttpAcceptEncodingHeader(value.ToString()),
-                HttpContentEncodingHeader.NAME => new HttpContentEncodingHeader(value.ToString()),
-                HttpTransferEncodingHeader.NAME => new HttpTransferEncodingHeader(value.ToString()),
-                _ => new HttpCustomHeader(name, value),
-            };
-        }
-    }
-}

Hamakaze/Headers/HttpHostHeader.cs

@@ -1,37 +0,0 @@
-using System;
-using System.Linq;
-using System.Text;
-
-namespace Hamakaze.Headers {
-    public class HttpHostHeader : HttpHeader {
-        public const string NAME = @"Host";
-
-        public override string Name => NAME;
-        public override object Value {
-            get {
-                StringBuilder sb = new();
-                sb.Append(Host);
-                if(Port != -1)
-                    sb.AppendFormat(@":{0}", Port);
-                return sb.ToString();
-            }
-        }
-
-        public string Host { get; }
-        public int Port { get; }
-        public bool IsSecure { get; }
-
-        public HttpHostHeader(string host, int port) {
-            Host = host;
-            Port = port;
-        }
-
-        public HttpHostHeader(string hostAndPort) {
-            string[] parts = hostAndPort.Split(':', 2, StringSplitOptions.TrimEntries);
-            Host = parts.ElementAtOrDefault(0) ?? throw new ArgumentNullException(nameof(hostAndPort));
-            if(!ushort.TryParse(parts.ElementAtOrDefault(1), out ushort port))
-                throw new FormatException(@"Host is not in valid format.");
-            Port = port;
-        }
-    }
-}

Hamakaze/Headers/HttpKeepAliveHeader.cs

@@ -1,35 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Hamakaze.Headers {
-    public class HttpKeepAliveHeader : HttpHeader {
-        public const string NAME = @"Keep-Alive";
-
-        public override string Name => NAME;
-        public override object Value {
-            get {
-                List<string> parts = new();
-                if(MaxIdle != TimeSpan.MaxValue)
-                    parts.Add(string.Format(@"timeout={0}", MaxIdle.TotalSeconds));
-                if(MaxRequests >= 0)
-                    parts.Add(string.Format(@"max={0}", MaxRequests));
-                return string.Join(@", ", parts);
-            }
-        }
-
-        public TimeSpan MaxIdle { get; } = TimeSpan.MaxValue;
-        public int MaxRequests { get; } = -1;
-
-        public HttpKeepAliveHeader(string value) {
-            IEnumerable<string> kvps = (value ?? throw new ArgumentNullException(nameof(value))).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-
-            foreach(string kvp in kvps) {
-                string[] parts = kvp.Split('=', 2, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-                if(parts[0] == @"timeout" && int.TryParse(parts[1], out int timeout))
-                    MaxIdle = TimeSpan.FromSeconds(timeout);
-                else if(parts[0] == @"max" && int.TryParse(parts[1], out int max))
-                    MaxRequests = max;
-            }
-        }
-    }
-}

Hamakaze/Headers/HttpServerHeader.cs

@@ -1,14 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpServerHeader : HttpHeader {
-        public const string NAME = @"Server";
-
-        public override string Name => NAME;
-        public override object Value { get; }
-
-        public HttpServerHeader(string server) {
-            Value = server ?? throw new ArgumentNullException(nameof(server));
-        }
-    }
-}

Hamakaze/Headers/HttpTeHeader.cs

@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace Hamakaze.Headers {
-    public class HttpTeHeader : HttpHeader {
-        public const string NAME = @"TE";
-
-        public override string Name => NAME;
-        public override object Value => string.Join(@", ", Encodings);
-
-        public HttpEncoding[] Encodings { get; }
-
-        public HttpTeHeader(string encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-        ) { }
-
-        public HttpTeHeader(string[] encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Select(HttpEncoding.Parse)
-        ) { }
-
-        public HttpTeHeader(IEnumerable<HttpEncoding> encodings) {
-            Encodings = (encodings ?? throw new ArgumentNullException(nameof(encodings))).ToArray();
-        }
-    }
-}

Hamakaze/Headers/HttpTransferEncodingHeader.cs

@@ -1,20 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpTransferEncodingHeader : HttpHeader {
-        public const string NAME = @"Transfer-Encoding";
-
-        public override string Name => NAME;
-        public override object Value => string.Join(@", ", Encodings);
-
-        public string[] Encodings { get; }
-
-        public HttpTransferEncodingHeader(string encodings) : this(
-            (encodings ?? throw new ArgumentNullException(nameof(encodings))).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-        ) {}
-
-        public HttpTransferEncodingHeader(string[] encodings) {
-            Encodings = encodings ?? throw new ArgumentNullException(nameof(encodings));
-        }
-    }
-}

Hamakaze/Headers/HttpUserAgentHeader.cs

@@ -1,20 +0,0 @@
-using System;
-
-namespace Hamakaze.Headers {
-    public class HttpUserAgentHeader : HttpHeader {
-        public const string NAME = @"User-Agent";
-
-        public override string Name => NAME;
-        public override object Value { get; }
-        
-        public HttpUserAgentHeader(string userAgent) {
-            if(userAgent == null)
-                throw new ArgumentNullException(nameof(userAgent));
-
-            if(string.IsNullOrWhiteSpace(userAgent) || userAgent.Equals(HttpClient.USER_AGENT))
-                Value = HttpClient.USER_AGENT;
-            else
-                Value = string.Format(@"{0} {1}", userAgent, HttpClient.USER_AGENT);
-        }
-    }
-}

Hamakaze/HttpClient.cs

@@ -1,118 +0,0 @@
-using Hamakaze.Headers;
-using System;
-using System.Collections.Generic;
-
-namespace Hamakaze {
-    public class HttpClient : IDisposable {
-        public const string PRODUCT_STRING = @"HMKZ";
-        public const string VERSION_MAJOR = @"1";
-        public const string VERSION_MINOR = @"0";
-        public const string USER_AGENT = PRODUCT_STRING + @"/" + VERSION_MAJOR + @"." + VERSION_MINOR;
-
-        private static HttpClient InstanceValue { get; set; }
-        public static HttpClient Instance {
-            get {
-                if(InstanceValue == null)
-                    InstanceValue = new HttpClient();
-                return InstanceValue;
-            }
-        }
-
-        private HttpConnectionManager Connections { get; }
-        private HttpTaskManager Tasks { get; }
-
-        public string DefaultUserAgent { get; set; } = USER_AGENT;
-        public bool ReuseConnections { get; set; } = true;
-        public IEnumerable<HttpEncoding> AcceptedEncodings { get; set; } = new[] { HttpEncoding.GZip, HttpEncoding.Deflate, HttpEncoding.Brotli };
-
-        public HttpClient() {
-            Connections = new HttpConnectionManager();
-            Tasks = new HttpTaskManager();
-        }
-
-        public HttpTask CreateTask(
-            HttpRequestMessage request,
-            Action<HttpTask, HttpResponseMessage> onComplete = null,
-            Action<HttpTask, Exception> onError = null,
-            Action<HttpTask> onCancel = null,
-            Action<HttpTask, long, long> onDownloadProgress = null,
-            Action<HttpTask, long, long> onUploadProgress = null,
-            Action<HttpTask, HttpTask.TaskState> onStateChange = null,
-            bool disposeRequest = true,
-            bool disposeResponse = true
-        ) {
-            if(request == null)
-                throw new ArgumentNullException(nameof(request));
-            if(string.IsNullOrWhiteSpace(request.UserAgent))
-                request.UserAgent = DefaultUserAgent;
-            if(!request.HasHeader(HttpAcceptEncodingHeader.NAME))
-                request.AcceptedEncodings = AcceptedEncodings;
-            request.Connection = ReuseConnections ? HttpConnectionHeader.KEEP_ALIVE : HttpConnectionHeader.CLOSE;
-
-            HttpTask task = new(Connections, request, disposeRequest, disposeResponse);
-
-            if(onComplete != null)
-                task.OnComplete += onComplete;
-            if(onError != null)
-                task.OnError += onError;
-            if(onCancel != null)
-                task.OnCancel += onCancel;
-            if(onDownloadProgress != null)
-                task.OnDownloadProgress += onDownloadProgress;
-            if(onUploadProgress != null)
-                task.OnUploadProgress += onUploadProgress;
-            if(onStateChange != null)
-                task.OnStateChange += onStateChange;
-
-            return task;
-        }
-
-        public void RunTask(HttpTask task) {
-            Tasks.RunTask(task);
-        }
-
-        public void SendRequest(
-            HttpRequestMessage request,
-            Action<HttpTask, HttpResponseMessage> onComplete = null,
-            Action<HttpTask, Exception> onError = null,
-            Action<HttpTask> onCancel = null,
-            Action<HttpTask, long, long> onDownloadProgress = null,
-            Action<HttpTask, long, long> onUploadProgress = null,
-            Action<HttpTask, HttpTask.TaskState> onStateChange = null,
-            bool disposeRequest = true,
-            bool disposeResponse = true
-        ) {
-            RunTask(CreateTask(request, onComplete, onError, onCancel, onDownloadProgress, onUploadProgress, onStateChange, disposeRequest, disposeResponse));
-        }
-
-        public static void Send(
-            HttpRequestMessage request,
-            Action<HttpTask, HttpResponseMessage> onComplete = null,
-            Action<HttpTask, Exception> onError = null,
-            Action<HttpTask> onCancel = null,
-            Action<HttpTask, long, long> onDownloadProgress = null,
-            Action<HttpTask, long, long> onUploadProgress = null,
-            Action<HttpTask, HttpTask.TaskState> onStateChange = null,
-            bool disposeRequest = true,
-            bool disposeResponse = true
-        ) {
-            Instance.SendRequest(request, onComplete, onError, onCancel, onDownloadProgress, onUploadProgress, onStateChange, disposeRequest, disposeResponse);
-        }
-
-        private bool IsDisposed;
-        ~HttpClient()
-            => DoDispose();
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-        private void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-
-            Tasks.Dispose();
-            Connections.Dispose();
-        }
-    }
-}

Hamakaze/HttpConnection.cs

@@ -1,81 +0,0 @@
-using System;
-using System.IO;
-using System.Net;
-using System.Net.Security;
-using System.Net.Sockets;
-using System.Security.Authentication;
-using System.Threading;
-
-namespace Hamakaze {
-    public class HttpConnection : IDisposable {
-        public IPEndPoint EndPoint { get; }
-        public Stream Stream { get; }
-
-        public Socket Socket { get; }
-        public NetworkStream NetworkStream { get; }
-        public SslStream SslStream { get; }
-
-        public string Host { get; }
-        public bool IsSecure { get; }
-
-        public bool HasTimedOut => MaxRequests == 0 || (DateTimeOffset.Now - LastOperation) > MaxIdle;
-
-        public int MaxRequests { get; set; } = -1;
-        public TimeSpan MaxIdle { get; set; } = TimeSpan.MaxValue;
-        public DateTimeOffset LastOperation { get; private set; } = DateTimeOffset.Now;
-
-        public bool InUse { get; private set; }
-
-        public HttpConnection(string host, IPEndPoint endPoint, bool secure) {
-            Host = host ?? throw new ArgumentNullException(nameof(host));
-            EndPoint = endPoint ?? throw new ArgumentNullException(nameof(endPoint));
-            IsSecure = secure;
-
-            if(endPoint.AddressFamily is not AddressFamily.InterNetwork and not AddressFamily.InterNetworkV6)
-                throw new ArgumentException(@"Address must be an IPv4 or IPv6 address.", nameof(endPoint));
-
-            Socket = new Socket(endPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp) {
-                NoDelay = true,
-                Blocking = true,
-            };
-            Socket.Connect(endPoint);
-
-            NetworkStream = new NetworkStream(Socket, true);
-
-            if(IsSecure) {
-                SslStream = new SslStream(NetworkStream, false, (s, ce, ch, e) => e == SslPolicyErrors.None, null);
-                Stream = SslStream;
-                SslStream.AuthenticateAsClient(Host, null, SslProtocols.Tls11 | SslProtocols.Tls12 | SslProtocols.Tls13, true);
-            } else
-                Stream = NetworkStream;
-        }
-
-        public void MarkUsed() {
-            LastOperation = DateTimeOffset.Now;
-            if(MaxRequests > 0)
-                --MaxRequests;
-        }
-
-        public bool Acquire() {
-            return !InUse && (InUse = true);
-        }
-
-        public void Release() {
-            InUse = false;
-        }
-
-        private bool IsDisposed;
-        ~HttpConnection()
-            => DoDispose();
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-        private void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-            Stream.Dispose();
-        }
-    }
-}

Hamakaze/HttpConnectionManager.cs

@@ -1,122 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Net;
-using System.Threading;
-
-namespace Hamakaze {
-    public class HttpConnectionManager : IDisposable {
-        private List<HttpConnection> Connections { get; } = new();
-        private Mutex Lock { get; } = new();
-
-        public HttpConnectionManager() {
-        }
-
-        private void AcquireLock() {
-            if(!Lock.WaitOne(10000))
-                throw new HttpConnectionManagerLockException();
-        }
-
-        private void ReleaseLock() {
-            Lock.ReleaseMutex();
-        }
-
-        public HttpConnection CreateConnection(string host, IPEndPoint endPoint, bool secure) {
-            if(host == null)
-                throw new ArgumentNullException(nameof(host));
-            if(endPoint == null)
-                throw new ArgumentNullException(nameof(endPoint));
-            HttpConnection conn = null;
-            AcquireLock();
-            try {
-                conn = CreateConnectionInternal(host, endPoint, secure);
-            } finally {
-                ReleaseLock();
-            }
-            return conn;
-        }
-
-        private HttpConnection CreateConnectionInternal(string host, IPEndPoint endPoint, bool secure) {
-            HttpConnection conn = new(host, endPoint, secure);
-            Connections.Add(conn);
-            return conn;
-        }
-
-        public HttpConnection GetConnection(string host, IPEndPoint endPoint, bool secure) {
-            if(host == null)
-                throw new ArgumentNullException(nameof(host));
-            if(endPoint == null)
-                throw new ArgumentNullException(nameof(endPoint));
-            HttpConnection conn = null;
-            AcquireLock();
-            try {
-                conn = GetConnectionInternal(host, endPoint, secure);
-            } finally {
-                ReleaseLock();
-            }
-            return conn;
-        }
-
-        private HttpConnection GetConnectionInternal(string host, IPEndPoint endPoint, bool secure) {
-            CleanConnectionsInternal();
-            HttpConnection conn = Connections.FirstOrDefault(c => host.Equals(c.Host) && endPoint.Equals(c.EndPoint) && c.IsSecure == secure && c.Acquire());
-            if(conn == null) {
-                conn = CreateConnectionInternal(host, endPoint, secure);
-                conn.Acquire();
-            }
-            return conn;
-        }
-
-        public void EndConnection(HttpConnection conn) {
-            if(conn == null)
-                throw new ArgumentNullException(nameof(conn));
-            AcquireLock();
-            try {
-                EndConnectionInternal(conn);
-            } finally {
-                ReleaseLock();
-            }
-        }
-
-        private void EndConnectionInternal(HttpConnection conn) {
-            Connections.Remove(conn);
-            conn.Dispose();
-        }
-
-        public void CleanConnection() {
-            AcquireLock();
-            try {
-                CleanConnectionsInternal();
-            } finally {
-                ReleaseLock();
-            }
-        }
-
-        private void CleanConnectionsInternal() {
-            IEnumerable<HttpConnection> conns = Connections.Where(x => x.HasTimedOut).ToArray();
-            foreach(HttpConnection conn in conns) {
-                Connections.Remove(conn);
-                conn.Dispose();
-            }
-        }
-
-        private bool IsDisposed;
-        ~HttpConnectionManager()
-            => DoDispose();
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-        private void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-
-            Lock.Dispose();
-
-            foreach(HttpConnection conn in Connections)
-                conn.Dispose();
-            Connections.Clear();
-        }
-    }
-}

Hamakaze/HttpEncoding.cs

@@ -1,69 +0,0 @@
-using System;
-using System.Globalization;
-using System.Text;
-
-namespace Hamakaze {
-    public readonly struct HttpEncoding : IComparable<HttpEncoding?>, IEquatable<HttpEncoding?> {
-        public const string DEFLATE = @"deflate";
-        public const string GZIP = @"gzip";
-        public const string XGZIP = @"x-gzip";
-        public const string BROTLI = @"br";
-        public const string IDENTITY = @"identity";
-        public const string CHUNKED = @"chunked";
-        public const string ANY = @"*";
-
-        public static readonly HttpEncoding Any = new(ANY);
-        public static readonly HttpEncoding None = new(ANY, 0f);
-        public static readonly HttpEncoding Deflate = new(DEFLATE);
-        public static readonly HttpEncoding GZip = new(GZIP);
-        public static readonly HttpEncoding Brotli = new(BROTLI);
-        public static readonly HttpEncoding Identity = new(IDENTITY);
-
-        public string Name { get; }
-        public float Quality { get; }
-
-        public HttpEncoding(string name, float quality = 1f) {
-            Name = name ?? throw new ArgumentNullException(nameof(name));
-            Quality = quality;
-        }
-
-        public HttpEncoding WithQuality(float quality) {
-            return new HttpEncoding(Name, quality);
-        }
-
-        public static HttpEncoding Parse(string encoding) {
-            string[] parts = encoding.Split(';', StringSplitOptions.TrimEntries);
-            float quality = 1f;
-            encoding = parts[0];
-
-            for(int i = 1; i < parts.Length; ++i)
-                if(parts[i].StartsWith(@"q=")) {
-                    if(!float.TryParse(parts[i], out quality))
-                        quality = 1f;
-                    break;
-                }
-
-            return new HttpEncoding(encoding, quality);
-        }
-
-        public override string ToString() {
-            StringBuilder sb = new();
-            sb.Append(Name);
-            if(Quality is >= 0f and < 1f)
-                sb.AppendFormat(CultureInfo.InvariantCulture, @";q={0:0.0}", Quality);
-            return sb.ToString();
-        }
-
-        public int CompareTo(HttpEncoding? other) {
-            if(!other.HasValue || other.Value.Quality < Quality)
-                return -1;
-            if(other.Value.Quality > Quality)
-                return 1;
-            return 0;
-        }
-
-        public bool Equals(HttpEncoding? other) {
-            return other.HasValue && Name.Equals(other.Value.Name) && Quality.Equals(other.Value.Quality);
-        }
-    }
-}

Hamakaze/HttpException.cs

@@ -1,40 +0,0 @@
-using System;
-
-namespace Hamakaze {
-    public class HttpException : Exception {
-        public HttpException(string message) : base(message) { }
-    }
-
-    public class HttpConnectionManagerException : HttpException {
-        public HttpConnectionManagerException(string message) : base(message) { }
-    }
-    public class HttpConnectionManagerLockException : HttpConnectionManagerException {
-        public HttpConnectionManagerLockException() : base(@"Failed to lock the connection manager in time.") { }
-    }
-
-    public class HttpTaskException : HttpException {
-        public HttpTaskException(string message) : base(message) { }
-    }
-    public class HttpTaskAlreadyStartedException : HttpTaskException {
-        public HttpTaskAlreadyStartedException() : base(@"Task has already started.") { }
-    }
-    public class HttpTaskInvalidStateException : HttpTaskException {
-        public HttpTaskInvalidStateException() : base(@"Task has ended up in an invalid state.") { }
-    }
-    public class HttpTaskNoAddressesException : HttpTaskException {
-        public HttpTaskNoAddressesException() : base(@"Could not find any addresses for this host.") { }
-    }
-    public class HttpTaskNoConnectionException : HttpTaskException {
-        public HttpTaskNoConnectionException() : base(@"Was unable to create a connection with this host.") { }
-    }
-    public class HttpTaskRequestFailedException : HttpTaskException {
-        public HttpTaskRequestFailedException() : base(@"Request failed for unknown reasons.") { }
-    }
-
-    public class HttpTaskManagerException : HttpException {
-        public HttpTaskManagerException(string message) : base(message) { }
-    }
-    public class HttpTaskManagerLockException : HttpTaskManagerException {
-        public HttpTaskManagerLockException() : base(@"Failed to reserve a thread.") { }
-    }
-}

Hamakaze/HttpMediaType.cs

@@ -1,159 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-namespace Hamakaze {
-    public readonly struct HttpMediaType : IComparable<HttpMediaType?>, IEquatable<HttpMediaType?> {
-        public const string TYPE_APPLICATION = @"application";
-        public const string TYPE_AUDIO = @"audio";
-        public const string TYPE_IMAGE = @"image";
-        public const string TYPE_MESSAGE = @"message";
-        public const string TYPE_MULTIPART = @"multipart";
-        public const string TYPE_TEXT = @"text";
-        public const string TYPE_VIDEO = @"video";
-
-        public static readonly HttpMediaType OctetStream = new(TYPE_APPLICATION, @"octet-stream");
-        public static readonly HttpMediaType FWIF = new(TYPE_APPLICATION, @"x.fwif");
-        public static readonly HttpMediaType JSON = new(TYPE_APPLICATION, @"json");
-        public static readonly HttpMediaType HTML = new(TYPE_TEXT, @"html", args: new[] { Param.UTF8 });
-
-        public string Type { get; }
-        public string Subtype { get; }
-        public string Suffix { get; }
-        public IEnumerable<Param> Params { get; }
-
-        public HttpMediaType(string type, string subtype, string suffix = null, IEnumerable<Param> args = null) {
-            Type = type ?? throw new ArgumentNullException(nameof(type));
-            Subtype = subtype ?? throw new ArgumentNullException(nameof(subtype));
-            Suffix = suffix ?? string.Empty;
-            Params = args ?? Enumerable.Empty<Param>();
-        }
-
-        public string GetParamValue(string name) {
-            foreach(Param param in Params)
-                if(param.Name.ToLowerInvariant() == name)
-                    return param.Value;
-            return null;
-        }
-
-        public static explicit operator HttpMediaType(string mediaTypeString) => Parse(mediaTypeString);
-
-        public static HttpMediaType Parse(string mediaTypeString) {
-            if(mediaTypeString == null)
-                throw new ArgumentNullException(nameof(mediaTypeString));
-
-            int slashIndex = mediaTypeString.IndexOf('/');
-            if(slashIndex == -1)
-                return OctetStream;
-
-            string type = mediaTypeString[..slashIndex];
-            string subtype = mediaTypeString[(slashIndex + 1)..];
-            string suffix = null;
-            IEnumerable<Param> args = null;
-
-            int paramIndex = subtype.IndexOf(';');
-            if(paramIndex != -1) {
-                args = subtype[(paramIndex + 1)..]
-                    .Split(';', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
-                    .Select(Param.Parse);
-                subtype = subtype[..paramIndex];
-            }
-
-            int suffixIndex = subtype.IndexOf('+');
-            if(suffixIndex != -1) {
-                suffix = subtype[(suffixIndex + 1)..];
-                subtype = subtype[..suffixIndex];
-            }
-
-            return new HttpMediaType(type, subtype, suffix, args);
-        }
-
-        public override string ToString() {
-            StringBuilder sb = new();
-            sb.AppendFormat(@"{0}/{1}", Type, Subtype);
-            if(!string.IsNullOrWhiteSpace(Suffix))
-                sb.AppendFormat(@"+{0}", Suffix);
-            if(Params.Any())
-                sb.AppendFormat(@";{0}", string.Join(';', Params));
-            return sb.ToString();
-        }
-
-        public int CompareTo(HttpMediaType? other) {
-            if(!other.HasValue)
-                return -1;
-            int type = Type.CompareTo(other.Value.Type);
-            if(type != 0)
-                return type;
-            int subtype = Subtype.CompareTo(other.Value.Subtype);
-            if(subtype != 0)
-                return subtype;
-            int suffix = Suffix.CompareTo(other.Value.Suffix);
-            if(suffix != 0)
-                return suffix;
-            int paramCount = Params.Count();
-            int args = paramCount - other.Value.Params.Count();
-            if(args != 0)
-                return args;
-            for(int i = 0; i < paramCount; ++i) {
-                args = Params.ElementAt(i).CompareTo(other.Value.Params.ElementAt(i));
-                if(args != 0)
-                    return args;
-            }
-            return 0;
-        }
-
-        public bool Equals(HttpMediaType? other) {
-            if(!other.HasValue)
-                return false;
-            if(!Type.Equals(other.Value.Type) || !Subtype.Equals(other.Value.Subtype) || !Suffix.Equals(other.Value.Suffix))
-                return false;
-            int paramCount = Params.Count();
-            if(paramCount != other.Value.Params.Count())
-                return false;
-            for(int i = 0; i < paramCount; ++i)
-                if(!Params.ElementAt(i).Equals(other.Value.Params.ElementAt(i)))
-                    return false;
-            return true;
-        }
-
-        public readonly struct Param : IComparable<Param?>, IEquatable<Param?> {
-            public const string CHARSET = @"charset";
-
-            public static readonly Param ASCII = new(CHARSET, @"us-ascii");
-            public static readonly Param UTF8 = new(CHARSET, @"utf-8");
-
-            public string Name { get; }
-            public string Value { get; }
-
-            public Param(string name, string value) {
-                Name = name ?? throw new ArgumentNullException(nameof(name));
-                Value = value ?? throw new ArgumentNullException(nameof(name));
-            }
-
-            public override string ToString() {
-                return string.Format(@"{0}={1}", Name, Value);
-            }
-
-            public static explicit operator Param(string paramStr) => Parse(paramStr);
-
-            public static Param Parse(string paramStr) {
-                string[] parts = (paramStr ?? throw new ArgumentNullException(nameof(paramStr))).Split('=', 2, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-                return new Param(parts[0], parts[1]);
-            }
-
-            public int CompareTo(Param? other) {
-                if(!other.HasValue)
-                    return -1;
-                int name = Name.CompareTo(other.Value.Name);
-                return name != 0
-                    ? name
-                    : Value.CompareTo(other.Value.Value);
-            }
-
-            public bool Equals(Param? other) {
-                return other.HasValue && Name.Equals(other.Value.Name) && Value.Equals(other.Value.Value);
-            }
-        }
-    }
-}

Hamakaze/HttpMessage.cs

@@ -1,46 +0,0 @@
-using Hamakaze.Headers;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-
-namespace Hamakaze {
-    public abstract class HttpMessage : IDisposable {
-        public abstract string ProtocolVersion { get; }
-        public abstract IEnumerable<HttpHeader> Headers { get; }
-        public abstract Stream Body { get; }
-
-        public virtual bool HasBody => Body != null;
-
-        protected bool OwnsBodyStream { get; set; }
-
-        public virtual IEnumerable<HttpHeader> GetHeader(string header) {
-            header = HttpHeader.NormaliseName(header);
-            return Headers.Where(h => h.Name == header);
-        }
-
-        public virtual bool HasHeader(string header) {
-            header = HttpHeader.NormaliseName(header);
-            return Headers.Any(h => h.Name == header);
-        }
-
-        public virtual string GetHeaderLine(string header) {
-            return string.Join(@", ", GetHeader(header).Select(h => h.Value));
-        }
-
-        private bool IsDisposed;
-        ~HttpMessage()
-            => DoDispose();
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-        protected void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-            if(OwnsBodyStream && Body != null)
-                Body.Dispose();
-        }
-    }
-}

Hamakaze/HttpRequestMessage.cs

@@ -1,190 +0,0 @@
-using Hamakaze.Headers;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Text;
-
-namespace Hamakaze {
-    public class HttpRequestMessage : HttpMessage {
-        public const string GET = @"GET";
-        public const string PUT = @"PUT";
-        public const string HEAD = @"HEAD";
-        public const string POST = @"POST";
-        public const string DELETE = @"DELETE";
-
-        public override string ProtocolVersion => @"1.1";
-
-        public string Method { get; }
-        public string RequestTarget { get; }
-
-        public bool IsSecure { get; }
-
-        public string Host { get; }
-        public ushort Port { get; }
-        public bool IsDefaultPort { get; }
-
-        public override IEnumerable<HttpHeader> Headers => HeaderList;
-        private List<HttpHeader> HeaderList { get; } = new();
-
-        private Stream BodyStream { get; set; }
-        public override Stream Body {
-            get {
-                if(BodyStream == null) {
-                    OwnsBodyStream = true;
-                    SetBody(new MemoryStream());
-                }
-                return BodyStream;
-            }
-        }
-
-        private static readonly string[] HEADERS_READONLY = new[] {
-            HttpHostHeader.NAME, HttpContentLengthHeader.NAME,
-        };
-        private static readonly string[] HEADERS_SINGLE = new[] {
-            HttpUserAgentHeader.NAME, HttpConnectionHeader.NAME, HttpAcceptEncodingHeader.NAME,
-        };
-
-        public IEnumerable<HttpEncoding> AcceptedEncodings {
-            get => HeaderList.Where(x => x.Name == HttpAcceptEncodingHeader.NAME).Cast<HttpAcceptEncodingHeader>().FirstOrDefault()?.Encodings
-                ?? Enumerable.Empty<HttpEncoding>();
-
-            set {
-                HeaderList.RemoveAll(x => x.Name == HttpAcceptEncodingHeader.NAME);
-                HeaderList.Add(new HttpAcceptEncodingHeader(value));
-            }
-        }
-
-        public string UserAgent {
-            get => HeaderList.FirstOrDefault(x => x.Name == HttpUserAgentHeader.NAME)?.Value.ToString()
-                ?? string.Empty;
-            set {
-                HeaderList.RemoveAll(x => x.Name == HttpUserAgentHeader.NAME);
-                HeaderList.Add(new HttpUserAgentHeader(value));
-            }
-        }
-
-        public string Connection {
-            get => HeaderList.FirstOrDefault(x => x.Name == HttpConnectionHeader.NAME)?.Value.ToString()
-                ?? string.Empty;
-            set {
-                HeaderList.RemoveAll(x => x.Name == HttpConnectionHeader.NAME);
-                HeaderList.Add(new HttpConnectionHeader(value));
-            }
-        }
-
-        public HttpMediaType ContentType {
-            get => HeaderList.Where(x => x.Name == HttpContentTypeHeader.NAME).Cast<HttpContentTypeHeader>().FirstOrDefault()?.MediaType
-                ?? HttpMediaType.OctetStream;
-            set {
-                HeaderList.RemoveAll(x => x.Name == HttpContentTypeHeader.NAME);
-                HeaderList.Add(new HttpContentTypeHeader(value));
-            }
-        }
-
-        public HttpRequestMessage(string method, string uri) : this(
-            method, new Uri(uri)
-        ) {}
-
-        public const ushort HTTP = 80;
-        public const ushort HTTPS = 443;
-
-        public HttpRequestMessage(string method, Uri uri) {
-            Method = method ?? throw new ArgumentNullException(nameof(method));
-            RequestTarget = uri.PathAndQuery;
-            IsSecure = uri.Scheme.Equals(@"https", StringComparison.InvariantCultureIgnoreCase);
-            Host = uri.Host;
-            ushort defaultPort = (IsSecure ? HTTPS : HTTP);
-            Port = uri.Port == -1 ? defaultPort : (ushort)uri.Port;
-            IsDefaultPort = Port == defaultPort;
-            HeaderList.Add(new HttpHostHeader(Host, IsDefaultPort ? -1 : Port));
-        }
-
-        public static bool IsHeaderReadOnly(string name)
-            => HEADERS_READONLY.Contains(name ?? throw new ArgumentNullException(nameof(name)));
-        public static bool IsHeaderSingleInstance(string name)
-            => HEADERS_SINGLE.Contains(name ?? throw new ArgumentNullException(nameof(name)));
-
-        public void SetHeader(string name, object value) {
-            name = HttpHeader.NormaliseName(name ?? throw new ArgumentNullException(nameof(name)));
-            if(IsHeaderReadOnly(name))
-                throw new ArgumentException(@"This header is read-only.", nameof(name));
-            HeaderList.RemoveAll(x => x.Name == name);
-            HeaderList.Add(HttpHeader.Create(name, value));
-        }
-
-        public void AddHeader(string name, object value) {
-            name = HttpHeader.NormaliseName(name ?? throw new ArgumentNullException(nameof(name)));
-            if(IsHeaderReadOnly(name))
-                throw new ArgumentException(@"This header is read-only.", nameof(name));
-            if(IsHeaderSingleInstance(name))
-                HeaderList.RemoveAll(x => x.Name == name);
-            HeaderList.Add(HttpHeader.Create(name, value));
-        }
-
-        public void RemoveHeader(string name) {
-            name = HttpHeader.NormaliseName(name ?? throw new ArgumentNullException(nameof(name)));
-            if(IsHeaderReadOnly(name))
-                throw new ArgumentException(@"This header is read-only.", nameof(name));
-            HeaderList.RemoveAll(x => x.Name == name);
-        }
-
-        public void SetBody(Stream stream) {
-            if(stream == null) {
-                if(OwnsBodyStream)
-                    BodyStream?.Dispose();
-                OwnsBodyStream = false;
-                BodyStream = null;
-                HeaderList.RemoveAll(x => x.Name == HttpContentLengthHeader.NAME);
-            } else {
-                if(!stream.CanRead || !stream.CanSeek)
-                    throw new ArgumentException(@"Body must readable and seekable.", nameof(stream));
-                if(OwnsBodyStream)
-                    BodyStream?.Dispose();
-                OwnsBodyStream = false;
-                BodyStream = stream;
-                HeaderList.Add(new HttpContentLengthHeader(BodyStream));
-            }
-        }
-
-        public void SetBody(byte[] buffer) {
-            SetBody(new MemoryStream(buffer));
-            OwnsBodyStream = true;
-        }
-
-        public void SetBody(string str, Encoding encoding = null) {
-            SetBody((encoding ?? Encoding.UTF8).GetBytes(str));
-        }
-
-        public void WriteTo(Stream stream, Action<long, long> onProgress = null) {
-            using(StreamWriter sw = new(stream, new ASCIIEncoding(), leaveOpen: true)) {
-                sw.NewLine = "\r\n";
-                sw.Write(Method);
-                sw.Write(' ');
-                sw.Write(RequestTarget);
-                sw.Write(@" HTTP/");
-                sw.WriteLine(ProtocolVersion);
-                foreach(HttpHeader header in Headers)
-                    sw.WriteLine(header);
-                sw.WriteLine();
-                sw.Flush();
-            }
-
-            if(BodyStream != null) {
-                const int bufferSize = 8192;
-                byte[] buffer = new byte[bufferSize];
-                int read;
-                long totalRead = 0;
-
-                onProgress?.Invoke(totalRead, BodyStream.Length);
-
-                BodyStream.Seek(0, SeekOrigin.Begin);
-                while((read = BodyStream.Read(buffer, 0, bufferSize)) > 0) {
-                    stream.Write(buffer, 0, read);
-                    totalRead += read;
-                    onProgress?.Invoke(totalRead, BodyStream.Length);
-                }
-            }
-        }
-    }
-}

Hamakaze/HttpResponseMessage.cs

@@ -1,265 +0,0 @@
-using Hamakaze.Headers;
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.IO;
-using System.IO.Compression;
-using System.Linq;
-using System.Text;
-
-namespace Hamakaze {
-    public class HttpResponseMessage : HttpMessage {
-        public override string ProtocolVersion { get; }
-        public int StatusCode { get; }
-        public string StatusMessage { get; }
-
-        public override IEnumerable<HttpHeader> Headers { get; }
-
-        public override Stream Body { get; }
-
-        public string Connection
-            => Headers.FirstOrDefault(x => x.Name == HttpConnectionHeader.NAME)?.Value.ToString() ?? string.Empty;
-        public string Server
-            => Headers.FirstOrDefault(x => x.Name == HttpServerHeader.NAME)?.Value.ToString() ?? string.Empty;
-        public DateTimeOffset Date
-            => Headers.Where(x => x.Name == HttpDateHeader.NAME).Cast<HttpDateHeader>().FirstOrDefault()?.DateTime ?? DateTimeOffset.MinValue;
-        public HttpMediaType ContentType
-            => Headers.Where(x => x.Name == HttpContentTypeHeader.NAME).Cast<HttpContentTypeHeader>().FirstOrDefault()?.MediaType
-            ?? HttpMediaType.OctetStream;
-        public Encoding ResponseEncoding
-            => Encoding.GetEncoding(ContentType.GetParamValue(@"charset") ?? @"iso8859-1");
-        public IEnumerable<string> ContentEncodings
-            => Headers.Where(x => x.Name == HttpContentEncodingHeader.NAME).Cast<HttpContentEncodingHeader>().FirstOrDefault()?.Encodings
-            ?? Enumerable.Empty<string>();
-        public IEnumerable<string> TransferEncodings
-            => Headers.Where(x => x.Name == HttpTransferEncodingHeader.NAME).Cast<HttpTransferEncodingHeader>().FirstOrDefault()?.Encodings
-            ?? Enumerable.Empty<string>();
-
-        public HttpResponseMessage(
-            int statusCode, string statusMessage, string protocolVersion,
-            IEnumerable<HttpHeader> headers, Stream body
-        ) {
-            ProtocolVersion = protocolVersion ?? throw new ArgumentNullException(nameof(protocolVersion));
-            StatusCode = statusCode;
-            StatusMessage = statusMessage ?? string.Empty;
-            Headers = (headers ?? throw new ArgumentNullException(nameof(headers))).ToArray();
-            OwnsBodyStream = true;
-            Body = body;
-        }
-
-        public byte[] GetBodyBytes() {
-            if(Body == null)
-                return null;
-            if(Body is MemoryStream msBody)
-                return msBody.ToArray();
-            using MemoryStream ms = new();
-            if(Body.CanSeek)
-                Body.Seek(0, SeekOrigin.Begin);
-            Body.CopyTo(ms);
-            return ms.ToArray();
-        }
-
-        public string GetBodyString() {
-            byte[] bytes = GetBodyBytes();
-            return bytes == null || bytes.Length < 1
-                ? string.Empty
-                : ResponseEncoding.GetString(bytes);
-        }
-
-        // there's probably a less stupid way to do this, be my guest and call me an idiot
-        private static void ProcessEncoding(Stack<string> encodings, Stream stream, bool transfer) {
-            using MemoryStream temp = new();
-            bool inTemp = false;
-
-            while(encodings.TryPop(out string encoding)) {
-                Stream target = (inTemp = !inTemp) ? temp : stream,
-                    source = inTemp ? stream : temp;
-
-                target.SetLength(0);
-                source.Seek(0, SeekOrigin.Begin);
-
-                switch(encoding) {
-                    case HttpEncoding.GZIP:
-                    case HttpEncoding.XGZIP:
-                        using(GZipStream gzs = new(source, CompressionMode.Decompress, true))
-                            gzs.CopyTo(target);
-                        break;
-
-                    case HttpEncoding.DEFLATE:
-                        using(DeflateStream def = new(source, CompressionMode.Decompress, true))
-                            def.CopyTo(target);
-                        break;
-
-                    case HttpEncoding.BROTLI:
-                        if(transfer)
-                            goto default;
-                        using(BrotliStream br = new(source, CompressionMode.Decompress, true))
-                            br.CopyTo(target);
-                        break;
-
-                    case HttpEncoding.IDENTITY:
-                        break;
-
-                    case HttpEncoding.CHUNKED:
-                        if(!transfer)
-                            goto default;
-                        throw new IOException(@"Invalid use of chunked encoding type in Transfer-Encoding header.");
-
-                    default:
-                        throw new IOException(@"Unsupported encoding supplied.");
-                }
-            }
-
-            if(inTemp) {
-                stream.SetLength(0);
-                temp.Seek(0, SeekOrigin.Begin);
-                temp.CopyTo(stream);
-            }
-        }
-
-        public static HttpResponseMessage ReadFrom(Stream stream, Action<long, long> onProgress = null) {
-            // ignore this function, it doesn't exist
-            string readLine() {
-                const ushort crlf = 0x0D0A;
-                using MemoryStream ms = new();
-                int byt; ushort lastTwo = 0;
-
-                for(; ; ) {
-                    byt = stream.ReadByte();
-                    if(byt == -1 && ms.Length == 0)
-                        return null;
-
-                    ms.WriteByte((byte)byt);
-
-                    lastTwo <<= 8;
-                    lastTwo |= (byte)byt;
-                    if(lastTwo == crlf) {
-                        ms.SetLength(ms.Length - 2);
-                        break;
-                    }
-                }
-
-                return Encoding.ASCII.GetString(ms.ToArray());
-            }
-
-            long contentLength = -1;
-            Stack<string> transferEncodings = null;
-            Stack<string> contentEncodings = null;
-
-            // Read initial header
-            string line = readLine();
-            if(line == null)
-                throw new IOException(@"Failed to read initial HTTP header.");
-            if(!line.StartsWith(@"HTTP/"))
-                throw new IOException(@"Response is not a valid HTTP message.");
-            string[] parts = line[5..].Split(' ', 3);
-            if(!int.TryParse(parts.ElementAtOrDefault(1), out int statusCode))
-                throw new IOException(@"Invalid HTTP status code format.");
-            string protocolVersion = parts.ElementAtOrDefault(0);
-            string statusMessage = parts.ElementAtOrDefault(2);
-
-            // Read header key-value pairs
-            List<HttpHeader> headers = new();
-
-            while((line = readLine()) != null) {
-                if(string.IsNullOrWhiteSpace(line))
-                    break;
-
-                parts = line.Split(':', 2, StringSplitOptions.TrimEntries);
-                if(parts.Length < 2)
-                    throw new IOException(@"Invalid HTTP header in response.");
-
-                string hName = HttpHeader.NormaliseName(parts.ElementAtOrDefault(0) ?? string.Empty),
-                    hValue = parts.ElementAtOrDefault(1);
-                if(string.IsNullOrEmpty(hName))
-                    throw new IOException(@"Invalid HTTP header name.");
-
-                HttpHeader header = HttpHeader.Create(hName, hValue);
-
-                if(header is HttpContentLengthHeader hclh)
-                    contentLength = (long)hclh.Value;
-                else if(header is HttpTransferEncodingHeader hteh)
-                    transferEncodings = new Stack<string>(hteh.Encodings);
-                else if(header is HttpContentEncodingHeader hceh)
-                    contentEncodings = new Stack<string>(hceh.Encodings);
-
-                headers.Add(header);
-            }
-
-            if(statusCode is < 200 or 201 or 204 or 205)
-                contentLength = 0;
-
-            Stream body = null;
-            long totalRead = 0;
-            const int buffer_size = 8192;
-            byte[] buffer = new byte[buffer_size];
-            int read;
-
-            void readBuffer(long length = -1) {
-                if(length == 0)
-                    return;
-                long remaining = length;
-                int bufferRead = buffer_size;
-                if(bufferRead > length)
-                    bufferRead = (int)length;
-
-                if(totalRead < 1)
-                    onProgress?.Invoke(0, contentLength);
-
-                while((read = stream.Read(buffer, 0, bufferRead)) > 0) {
-                    body.Write(buffer, 0, read);
-
-                    totalRead += read;
-                    onProgress?.Invoke(totalRead, contentLength);
-
-                    if(length >= 0) {
-                        remaining -= read;
-                        if(remaining < 1)
-                            break;
-                        if(bufferRead > remaining)
-                            bufferRead = (int)remaining;
-                    }
-                }
-            }
-
-            // Read body
-            if(transferEncodings != null && transferEncodings.Any() && transferEncodings.Peek() == HttpEncoding.CHUNKED) {
-                // oh no the poop is chunky
-                transferEncodings.Pop();
-                body = new MemoryStream();
-
-                while((line = readLine()) != null) {
-                    if(string.IsNullOrWhiteSpace(line))
-                        break;
-                    if(!int.TryParse(line, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out int chunkLength))
-                        throw new IOException(@"Failed to decode chunk length.");
-                    if(chunkLength == 0) // final chunk
-                        break;
-                    readBuffer(chunkLength);
-                    readLine();
-                }
-                readLine();
-            } else if(contentLength != 0) {
-                body = new MemoryStream();
-                readBuffer(contentLength);
-                readLine();
-            }
-
-            if(body != null)
-                // Check if body is empty and null it again if so
-                if(body.Length == 0) {
-                    body.Dispose();
-                    body = null;
-                } else {
-                    if(transferEncodings != null)
-                        ProcessEncoding(transferEncodings, body, true);
-                    if(contentEncodings != null)
-                        ProcessEncoding(contentEncodings, body, false);
-
-                    body.Seek(0, SeekOrigin.Begin);
-                }
-
-            return new HttpResponseMessage(statusCode, statusMessage, protocolVersion, headers, body);
-        }
-    }
-}

Hamakaze/HttpTask.cs

@@ -1,189 +0,0 @@
-using Hamakaze.Headers;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Net;
-
-namespace Hamakaze {
-    public class HttpTask {
-        public TaskState State { get; private set; } = TaskState.Initial;
-
-        public bool IsStarted
-            => State != TaskState.Initial;
-        public bool IsFinished
-            => State == TaskState.Finished;
-        public bool IsCancelled
-            => State == TaskState.Cancelled;
-        public bool IsErrored
-            => Exception != null;
-
-        public Exception Exception { get; private set; }
-
-        public HttpRequestMessage Request { get; }
-        public HttpResponseMessage Response { get; private set; }
-        private HttpConnectionManager Connections { get; }
-
-        private IEnumerable<IPAddress> Addresses { get; set; }
-        private HttpConnection Connection { get; set; }
-
-        public bool DisposeRequest { get; set; }
-        public bool DisposeResponse { get; set; }
-
-        public event Action<HttpTask, HttpResponseMessage> OnComplete;
-        public event Action<HttpTask, Exception> OnError;
-        public event Action<HttpTask> OnCancel;
-        public event Action<HttpTask, long, long> OnUploadProgress;
-        public event Action<HttpTask, long, long> OnDownloadProgress;
-        public event Action<HttpTask, TaskState> OnStateChange;
-
-        public HttpTask(HttpConnectionManager conns, HttpRequestMessage request, bool disposeRequest, bool disposeResponse) {
-            Connections = conns ?? throw new ArgumentNullException(nameof(conns));
-            Request = request ?? throw new ArgumentNullException(nameof(request));
-            DisposeRequest = disposeRequest;
-            DisposeResponse = disposeResponse;
-        }
-
-        public void Run() {
-            if(IsStarted)
-                throw new HttpTaskAlreadyStartedException();
-            while(NextStep());
-        }
-
-        public void Cancel() {
-            State = TaskState.Cancelled;
-            OnStateChange?.Invoke(this, State);
-            OnCancel?.Invoke(this);
-            if(DisposeResponse)
-                Response?.Dispose();
-            if(DisposeRequest)
-                Request?.Dispose();
-        }
-
-        private void Error(Exception ex) {
-            Exception = ex;
-            OnError?.Invoke(this, ex);
-            Cancel();
-        }
-
-        public bool NextStep() {
-            if(IsCancelled)
-                return false;
-
-            switch(State) {
-                case TaskState.Initial:
-                    State = TaskState.Lookup;
-                    OnStateChange?.Invoke(this, State);
-                    DoLookup();
-                    break;
-                case TaskState.Lookup:
-                    State = TaskState.Request;
-                    OnStateChange?.Invoke(this, State);
-                    DoRequest();
-                    break;
-                case TaskState.Request:
-                    State = TaskState.Response;
-                    OnStateChange?.Invoke(this, State);
-                    DoResponse();
-                    break;
-                case TaskState.Response:
-                    State = TaskState.Finished;
-                    OnStateChange?.Invoke(this, State);
-                    OnComplete?.Invoke(this, Response);
-                    if(DisposeResponse)
-                        Response?.Dispose();
-                    if(DisposeRequest)
-                        Request?.Dispose();
-                    return false;
-                default:
-                    Error(new HttpTaskInvalidStateException());
-                    return false;
-            }
-
-            return true;
-        }
-
-        private void DoLookup() {
-            try {
-                Addresses = Dns.GetHostAddresses(Request.Host);
-            } catch(Exception ex) {
-                Error(ex);
-                return;
-            }
-
-            if(!Addresses.Any())
-                Error(new HttpTaskNoAddressesException());
-        }
-
-        private void DoRequest() {
-            Exception exception = null;
-
-            try {
-                foreach(IPAddress addr in Addresses) {
-                    int tries = 0;
-                    IPEndPoint endPoint = new(addr, Request.Port);
-
-                    exception = null;
-                    Connection = Connections.GetConnection(Request.Host, endPoint, Request.IsSecure);
-
-                retry:
-                    ++tries;
-                    try {
-                        Request.WriteTo(Connection.Stream, (p, t) => OnUploadProgress?.Invoke(this, p, t));
-                        break;
-                    } catch(IOException ex) {
-                        Connection.Dispose();
-                        Connection = Connections.GetConnection(Request.Host, endPoint, Request.IsSecure);
-
-                        if(tries < 2)
-                            goto retry;
-
-                        exception = ex;
-                        continue;
-                    } finally {
-                        Connection.MarkUsed();
-                    }
-                }
-            } catch(Exception ex) {
-                Error(ex);
-            }
-
-            if(exception != null)
-                Error(exception);
-            else if(Connection == null)
-                Error(new HttpTaskNoConnectionException());
-        }
-
-        private void DoResponse() {
-            try {
-                Response = HttpResponseMessage.ReadFrom(Connection.Stream, (p, t) => OnDownloadProgress?.Invoke(this, p, t));
-            } catch(Exception ex) {
-                Error(ex);
-                return;
-            }
-
-            if(Response.Connection == HttpConnectionHeader.CLOSE)
-                Connection.Dispose();
-            if(Response == null)
-                Error(new HttpTaskRequestFailedException());
-
-            HttpKeepAliveHeader hkah = Response.Headers.Where(x => x.Name == HttpKeepAliveHeader.NAME).Cast<HttpKeepAliveHeader>().FirstOrDefault();
-            if(hkah != null) {
-                Connection.MaxIdle = hkah.MaxIdle;
-                Connection.MaxRequests = hkah.MaxRequests;
-            }
-
-            Connection.Release();
-        }
-
-        public enum TaskState {
-            Initial = 0,
-            Lookup = 10,
-            Request = 20,
-            Response = 30,
-            Finished = 40,
-
-            Cancelled = -1,
-        }
-    }
-}

Hamakaze/HttpTaskManager.cs

@@ -1,41 +0,0 @@
-using System;
-using System.Threading;
-
-namespace Hamakaze {
-    public class HttpTaskManager : IDisposable {
-        private Semaphore Lock { get; set; }
-
-        public HttpTaskManager(int maxThreads = 5) {
-            Lock = new Semaphore(maxThreads, maxThreads);
-        }
-
-        public void RunTask(HttpTask task) {
-            if(task == null)
-                throw new ArgumentNullException(nameof(task));
-            if(!Lock.WaitOne())
-                throw new HttpTaskManagerLockException();
-            new Thread(() => {
-                try {
-                    task.Run();
-                } finally {
-                    Lock?.Release();
-                }
-            }).Start();
-        }
-
-        private bool IsDisposed;
-        ~HttpTaskManager()
-            => DoDispose();
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-        private void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-            Lock.Dispose();
-            Lock = null;
-        }
-    }
-}

HttpClientTest/HttpClientTest.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\hamakaze\Hamakaze\Hamakaze.csproj" />
+  </ItemGroup>
+
+</Project>

HttpClientTest/Program.cs

@@ -0,0 +1,147 @@
+using Hamakaze;
+using System;
+using System.Threading;
+using static System.Console;
+
+namespace HttpClientTest {
+    public static class Program {
+        public static void Main(string[] args) {
+            ResetColor();
+
+            HttpClient.Instance.DefaultUserAgent = @"SharpChat/1.0";
+
+            /*string[] commonMediaTypes = new[] {
+                @"application/x-executable",
+                @"application/graphql",
+                @"application/javascript",
+                @"application/x.fwif",
+                @"application/json",
+                @"application/ld+json",
+                @"application/msword",
+                @"application/pdf",
+                @"application/sql",
+                @"application/vnd.api+json",
+                @"application/vnd.ms-excel",
+                @"application/vnd.ms-powerpoint",
+                @"application/vnd.oasis.opendocument.text",
+                @"application/vnd.openxmlformats-officedocument.presentationml.presentation",
+                @"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+                @"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+                @"application/x-www-form-urlencoded",
+                @"application/xml",
+                @"application/zip",
+                @"application/zstd",
+                @"audio/mpeg",
+                @"audio/ogg",
+                @"image/gif",
+                @"image/apng",
+                @"image/flif",
+                @"image/webp",
+                @"image/x-mng",
+                @"image/jpeg",
+                @"image/png",
+                @"multipart/form-data",
+                @"text/css",
+                @"text/csv",
+                @"text/html",
+                @"text/php",
+                @"text/plain",
+                @"text/xml",
+                @"text/html; charset=utf-8",
+            };
+
+            Logger.Write(@"Testing Media Type parsing...");
+            foreach(string mts in commonMediaTypes) {
+                HttpMediaType hmt = HttpMediaType.Parse(mts);
+                Logger.Write($@"O {mts}");
+                Logger.Write($@"P {hmt}");
+            }
+
+            return;*/
+
+            static void setForeground(ConsoleColor color) {
+                ResetColor();
+                ForegroundColor = color;
+            }
+
+            using ManualResetEvent mre = new(false);
+            bool kill = false;
+            string[] urls = {
+                @"https://flashii.net/",
+                @"https://flashii.net/changelog",
+                @"https://abyss.flash.moe/",
+                @"https://flashii.net/info/contact",
+                @"https://flashii.net/news/",
+                @"https://flash.moe/",
+                @"https://flashii.net/forum/",
+            };
+
+            foreach(string url in urls) {
+                // routine lifted out of satori
+                string paramUrl = Uri.EscapeDataString(url);
+                HttpClient.Send(
+                    new HttpRequestMessage(HttpRequestMessage.GET, $@"https://mii.flashii.net/metadata?url={paramUrl}"),
+                    onComplete: (task, res) => {
+                        WriteLine($@"Connection: {task.Request.Connection}");
+                        WriteLine($@"AcceptEncodings: {string.Join(@", ", task.Request.AcceptedEncodings)}");
+                        WriteLine($@"IsSecure: {task.Request.IsSecure}");
+                        WriteLine($@"RequestTarget: {task.Request.RequestTarget}");
+                        WriteLine($@"UserAgent: {task.Request.UserAgent}");
+                        WriteLine($@"ContentType: {task.Request.ContentType}");
+                        WriteLine();
+
+                        setForeground(ConsoleColor.Green);
+
+                        WriteLine($@"Connection: {res.StatusCode}");
+                        WriteLine($@"Connection: {res.StatusMessage}");
+                        WriteLine($@"Connection: {res.Connection}");
+                        WriteLine($@"ContentEncodings: {string.Join(@", ", res.ContentEncodings)}");
+                        WriteLine($@"TransferEncodings: {string.Join(@", ", res.TransferEncodings)}");
+                        WriteLine($@"Date: {res.Date}");
+                        WriteLine($@"Server: {res.Server}");
+                        WriteLine($@"ContentType: {res.ContentType}");
+                        WriteLine();
+
+                        /*if(res.HasBody) {
+                            string line;
+                            using StreamWriter sw = new StreamWriter(@"out.html", false, new UTF8Encoding(false));
+                            using StreamReader sr = new StreamReader(res.Body, new UTF8Encoding(false), false, leaveOpen: true);
+                            while((line = sr.ReadLine()) != null) {
+                                //Logger.Debug(line);
+                                sw.WriteLine(line);
+                            }
+                        }*/
+                    },
+                    onError: (task, ex) => {
+                        setForeground(ConsoleColor.Red);
+                        WriteLine(ex);
+                    },
+                    onCancel: task => {
+                        setForeground(ConsoleColor.Yellow);
+                        WriteLine(@"Cancelled.");
+                    },
+                    onDownloadProgress: (task, p, t) => {
+                        setForeground(ConsoleColor.Blue);
+                        WriteLine($@"Downloaded {p} bytes of {t} bytes.");
+                    },
+                    onUploadProgress: (task, p, t) => {
+                        setForeground(ConsoleColor.Magenta);
+                        WriteLine($@"Uploaded {p} bytes of {t} bytes.");
+                    },
+                    onStateChange: (task, s) => {
+                        setForeground(ConsoleColor.White);
+                        WriteLine($@"State changed: {s}");
+
+                        if(!kill && (task.IsFinished || task.IsCancelled)) {
+                            kill = true;
+                            mre?.Set();
+                        }
+                    }
+                );
+            }
+
+            mre.WaitOne();
+            ResetColor();
+        }
+    }
+}

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019-2022 flashwave
+Copyright (c) 2019-2022 flashwave <me@flash.moe>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

MisuzuDataProviderTest/MisuzuDataProviderTest.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SharpChat.Common\SharpChat.Common.csproj" />
+    <ProjectReference Include="..\SharpChat.DataProvider.Misuzu\SharpChat.DataProvider.Misuzu.csproj" />
+  </ItemGroup>
+
+</Project>

MisuzuDataProviderTest/Program.cs

@@ -0,0 +1,99 @@
+using Hamakaze;
+using SharpChat.Bans;
+using SharpChat.Configuration;
+using SharpChat.DataProvider;
+using SharpChat.DataProvider.Misuzu;
+using SharpChat.Users.Remote;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Reflection;
+using System.Threading;
+using static System.Console;
+
+namespace MisuzuDataProviderTest {
+    public static class Program {
+        public static void Main() {
+            WriteLine("Misuzu Authentication Tester");
+
+            using ManualResetEvent mre = new(false);
+
+            string cfgPath = Path.GetDirectoryName(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));
+            string buildMode = Path.GetFileName(cfgPath);
+            cfgPath = Path.Combine(
+                Path.GetDirectoryName(Path.GetDirectoryName(Path.GetDirectoryName(cfgPath))),
+                @"SharpChat", @"bin", buildMode, @"net5.0", @"sharpchat.cfg"
+            );
+
+            WriteLine($@"Reading config from {cfgPath}");
+
+            using IConfig config = new StreamConfig(cfgPath);
+
+            WriteLine($@"Enter token found on {config.ReadValue(@"dp:misuzu:endpoint")}/login:");
+            string[] token = ReadLine().Split(new[] { '_' }, 2);
+
+            HttpClient.Instance.DefaultUserAgent = @"SharpChat/1.0";
+
+            IDataProvider dataProvider = new MisuzuDataProvider(config.ScopeTo(@"dp:misuzu"), HttpClient.Instance);
+
+            long userId = long.Parse(token[0]);
+            IPAddress remoteAddr = IPAddress.Parse(@"1.2.4.8");
+
+            IUserAuthResponse authRes = null;
+            mre.Reset();
+            dataProvider.UserClient.AuthenticateUser(
+                new UserAuthRequest(userId, token[1], remoteAddr),
+                onSuccess: res => {
+                    authRes = res;
+                    WriteLine(@"Auth success!");
+                    WriteLine($@" User ID:   {authRes.UserId}");
+                    WriteLine($@" Username:  {authRes.UserName}");
+                    WriteLine($@" Colour:    {authRes.Colour.Raw:X8}");
+                    WriteLine($@" Hierarchy: {authRes.Rank}");
+                    WriteLine($@" Silenced:  {authRes.SilencedUntil}");
+                    WriteLine($@" Perms:     {authRes.Permissions}");
+                    mre.Set();
+                },
+                onFailure: ex => {
+                    WriteLine($@"Auth failed: {ex.Message}");
+                    mre.Set();
+                }
+            );
+            mre.WaitOne();
+
+            if(authRes == null)
+                return;
+
+#if FUCKED
+            WriteLine(@"Bumping last seen...");
+            mre.Reset();
+            dataProvider.UserBumpClient.SubmitBumpUsers(
+                new[] { new User(authRes) },
+                onSuccess: () => mre.Set(),
+                onFailure: ex => {
+                    WriteLine($@"Bump failed: {ex.Message}");
+                    mre.Set();
+                }
+            );
+            mre.WaitOne();
+#endif
+
+            WriteLine(@"Fetching ban list...");
+            IEnumerable<IBanRecord> bans = Enumerable.Empty<IBanRecord>();
+
+            mre.Reset();
+            dataProvider.BanClient.GetBanList(x => { bans = x; mre.Set(); }, e => { WriteLine(e); mre.Set(); });
+            mre.WaitOne();
+
+            WriteLine($@"{bans.Count()} BANS");
+            foreach(IBanRecord ban in bans) {
+                WriteLine($@"BAN INFO");
+                WriteLine($@" User ID:    {ban.UserId}");
+                WriteLine($@" Username:   {ban.UserName}");
+                WriteLine($@" IP Address: {ban.UserIP}");
+                WriteLine($@" Expires:    {ban.Expires}");
+            }
+        }
+    }
+}

README.md

@@ -7,4 +7,6 @@
                      /_/                             
 ```
 
-Welcome to the repository of the temporary Flashii chat server. This is a reimplementation of the old [PHP based Sock Chat server](https://github.com/flashwave/mahou-chat/) in C#.
+Welcome to the repository of the temporary Flashii chat server. SharpChat is an event based chat server supporting multiple protocols (currently Sock Chat and IRC).
+
+> Formerly [PHP Sock Chat](https://github.com/flashwave/mahou-chat/) but without PHP but with C# but also with multiple sessions

SharpChat.Common/Bans/BanManager.cs

@@ -0,0 +1,344 @@
+using SharpChat.Events;
+using SharpChat.Users;
+using SharpChat.Users.Remote;
+using System;
+using System.Collections.Generic;
+using System.Net;
+
+namespace SharpChat.Bans {
+    public class BanManager {
+        private UserManager Users { get; }
+        private IBanClient BanClient { get; }
+        private IRemoteUserClient RemoteUserClient { get; }
+        private IEventDispatcher Dispatcher { get; }
+        private readonly object Sync = new();
+
+        public BanManager(
+            UserManager users,
+            IBanClient banClient,
+            IRemoteUserClient remoteUserClient,
+            IEventDispatcher dispatcher
+        ) {
+            Users = users ?? throw new ArgumentNullException(nameof(users));
+            BanClient = banClient ?? throw new ArgumentNullException(nameof(banClient));
+            RemoteUserClient = remoteUserClient ?? throw new ArgumentNullException(nameof(remoteUserClient));
+            Dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
+        }
+
+        public void GetBanList(
+            Action<IEnumerable<IBanRecord>> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                BanClient.GetBanList(onSuccess, onFailure);
+        }
+
+        public void CheckBan(
+            long userId,
+            IPAddress ipAddress,
+            Action<IBanRecord> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(ipAddress == null)
+                throw new ArgumentNullException(nameof(ipAddress));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    userId,
+                    rui => {
+                        if(rui == null)
+                            onSuccess(null);
+                        else
+                            CheckBan(rui, ipAddress, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void CheckBan(
+            IUser localUserInfo,
+            IPAddress ipAddress,
+            Action<IBanRecord> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(localUserInfo == null)
+                throw new ArgumentNullException(nameof(localUserInfo));
+            if(ipAddress == null)
+                throw new ArgumentNullException(nameof(ipAddress));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    localUserInfo,
+                    rui => {
+                        if(rui == null)
+                            onSuccess(null);
+                        else
+                            CheckBan(rui, ipAddress, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void CheckBan(
+            IRemoteUser remoteUserInfo,
+            IPAddress ipAddress,
+            Action<IBanRecord> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(remoteUserInfo == null)
+                throw new ArgumentNullException(nameof(remoteUserInfo));
+            if(ipAddress == null)
+                throw new ArgumentNullException(nameof(ipAddress));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                BanClient.CheckBan(remoteUserInfo, ipAddress, onSuccess, onFailure);
+        }
+
+        public void CreateBan(
+            string subjectName,
+            IUser localModerator,
+            bool permanent,
+            TimeSpan duration,
+            string reason,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(subjectName == null)
+                throw new ArgumentNullException(nameof(subjectName));
+            if(reason == null)
+                throw new ArgumentNullException(nameof(reason));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    subjectName,
+                    remoteSubject => {
+                        if(remoteSubject == null)
+                            onSuccess(false);
+                        else
+                            CreateBan(remoteSubject, localModerator, permanent, duration, reason, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void CreateBan(
+            IUser localSubject,
+            IUser localModerator,
+            bool permanent,
+            TimeSpan duration,
+            string reason,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(localSubject == null)
+                throw new ArgumentNullException(nameof(localSubject));
+            if(reason == null)
+                throw new ArgumentNullException(nameof(reason));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    localSubject,
+                    remoteSubject => {
+                        if(remoteSubject == null)
+                            onSuccess(false);
+                        else
+                            CreateBan(remoteSubject, localModerator, permanent, duration, reason, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void CreateBan(
+            IRemoteUser remoteSubject,
+            IUser localModerator,
+            bool permanent,
+            TimeSpan duration,
+            string reason,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(remoteSubject == null)
+                throw new ArgumentNullException(nameof(remoteSubject));
+            if(reason == null)
+                throw new ArgumentNullException(nameof(reason));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    localModerator,
+                    remoteModerator => CreateBan(remoteSubject, remoteModerator, permanent, duration, reason, onSuccess, onFailure),
+                    onFailure
+                );
+        }
+
+        public void CreateBan(
+            IRemoteUser remoteSubject,
+            IRemoteUser remoteModerator,
+            bool permanent,
+            TimeSpan duration,
+            string reason,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(remoteSubject == null)
+                throw new ArgumentNullException(nameof(remoteSubject));
+            if(reason == null)
+                throw new ArgumentNullException(nameof(reason));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                BanClient.CreateBan(remoteSubject, remoteModerator, permanent, duration, reason, success => {
+                    Dispatcher.DispatchEvent(this, new UserBanCreatedEvent(remoteSubject, remoteModerator, permanent, duration, reason));
+                    Users.Disconnect(
+                        remoteSubject,
+                        remoteModerator == null
+                            ? UserDisconnectReason.Flood
+                            : UserDisconnectReason.Kicked
+                    );
+                    onSuccess.Invoke(success);
+                }, onFailure);
+        }
+
+        public void RemoveBan(
+            long userId,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    userId,
+                    remoteUser => {
+                        if(remoteUser == null)
+                            onSuccess(false);
+                        else
+                            RemoveBan(remoteUser, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void RemoveBan(
+            string userName,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(userName == null)
+                throw new ArgumentNullException(nameof(userName));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    userName,
+                    remoteUser => {
+                        if(remoteUser == null)
+                            onSuccess(false);
+                        else
+                            RemoveBan(remoteUser, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void RemoveBan(
+            IUser localUser,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(localUser == null)
+                throw new ArgumentNullException(nameof(localUser));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                RemoteUserClient.ResolveUser(
+                    localUser,
+                    remoteUser => {
+                        if(remoteUser == null)
+                            onSuccess(false);
+                        else
+                            RemoveBan(remoteUser, onSuccess, onFailure);
+                    },
+                    onFailure
+                );
+        }
+
+        public void RemoveBan(
+            IRemoteUser remoteUser,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(remoteUser == null)
+                throw new ArgumentNullException(nameof(remoteUser));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                BanClient.RemoveBan(remoteUser, success => {
+                    Dispatcher.DispatchEvent(this, new UserBanRemovedEvent(remoteUser));
+                    onSuccess.Invoke(success);
+                }, onFailure);
+        }
+
+        public void RemoveBan(
+            IPAddress ipAddress,
+            Action<bool> onSuccess,
+            Action<Exception> onFailure
+        ) {
+            if(ipAddress == null)
+                throw new ArgumentNullException(nameof(ipAddress));
+            if(onSuccess == null)
+                throw new ArgumentNullException(nameof(onSuccess));
+            if(onFailure == null)
+                throw new ArgumentNullException(nameof(onFailure));
+
+            lock(Sync)
+                BanClient.RemoveBan(ipAddress, success => {
+                    Dispatcher.DispatchEvent(this, new IPBanRemovedEvent(ipAddress));
+                    onSuccess.Invoke(success);
+                }, onFailure);
+        }
+    }
+}

SharpChat.Common/Bans/IBanClient.cs

@@ -0,0 +1,14 @@
+using SharpChat.Users.Remote;
+using System;
+using System.Collections.Generic;
+using System.Net;
+
+namespace SharpChat.Bans {
+    public interface IBanClient {
+        void GetBanList(Action<IEnumerable<IBanRecord>> onSuccess, Action<Exception> onFailure);
+        void CheckBan(IRemoteUser subject, IPAddress ipAddress, Action<IBanRecord> onSuccess, Action<Exception> onFailure);
+        void CreateBan(IRemoteUser subject, IRemoteUser moderator, bool perma, TimeSpan duration, string reason, Action<bool> onSuccess, Action<Exception> onFailure);
+        void RemoveBan(IRemoteUser subject, Action<bool> onSuccess, Action<Exception> onFailure);
+        void RemoveBan(IPAddress ipAddress, Action<bool> onSuccess, Action<Exception> onFailure);
+    }
+}

SharpChat.Common/Bans/IBanRecord.cs

@@ -0,0 +1,11 @@
+using SharpChat.Users.Remote;
+using System;
+using System.Net;
+
+namespace SharpChat.Bans {
+    public interface IBanRecord : IRemoteUser {
+        IPAddress UserIP { get; }
+        DateTimeOffset Expires { get; }
+        bool IsPermanent { get; }
+    }
+}

SharpChat.Common/Channels/Channel.cs

@@ -0,0 +1,159 @@
+using SharpChat.Events;
+using SharpChat.Sessions;
+using SharpChat.Users;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SharpChat.Channels {
+    public class Channel : IChannel, IEventHandler {
+        public const int ID_LENGTH = 8;
+
+        public string ChannelId { get; }
+        public string Name { get; private set; }
+        public string Topic { get; private set; }
+        public bool IsTemporary { get; private set; }
+        public int MinimumRank { get; private set; }
+        public bool AutoJoin { get; private set; }
+        public uint MaxCapacity { get; private set; }
+        public int Order { get; private set; }
+        public long OwnerId { get; private set; }
+
+        private readonly object Sync = new();
+        private HashSet<long> Users { get; } = new();
+        private Dictionary<string, long> Sessions { get; } = new();
+
+        public bool HasTopic
+            => !string.IsNullOrWhiteSpace(Topic);
+
+        public string Password { get; private set; } = string.Empty;
+        public bool HasPassword
+            => !string.IsNullOrWhiteSpace(Password);
+
+        public Channel(
+            string channelId,
+            string name,
+            string topic,
+            bool temp,
+            int minimumRank,
+            string password,
+            bool autoJoin,
+            uint maxCapacity,
+            long ownerId,
+            int order
+        ) {
+            ChannelId = channelId ?? throw new ArgumentNullException(nameof(channelId));
+            Name = name ?? throw new ArgumentNullException(nameof(name));
+            Topic = topic;
+            IsTemporary = temp;
+            MinimumRank = minimumRank;
+            Password = password ?? string.Empty;
+            AutoJoin = autoJoin;
+            MaxCapacity = maxCapacity;
+            OwnerId = ownerId;
+            Order = order;
+        }
+
+        public bool VerifyPassword(string password) {
+            if(password == null)
+                throw new ArgumentNullException(nameof(password));
+            lock(Sync)
+                return !HasPassword || Password.Equals(password);
+        }
+
+        public bool HasUser(IUser user) {
+            if(user == null)
+                return false;
+            lock(Sync)
+                return Users.Contains(user.UserId);
+        }
+
+        public bool HasSession(ISession session) {
+            if(session == null)
+                return false;
+            lock(Sync)
+                return Sessions.ContainsKey(session.SessionId);
+        }
+
+        public void GetUserIds(Action<IEnumerable<long>> callback) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync)
+                callback(Users);
+        }
+
+        public void GetSessionIds(Action<IEnumerable<string>> callback) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync)
+                callback(Sessions.Keys);
+        }
+
+        public int CountUsers() {
+            lock(Sync)
+                return Users.Count;
+        }
+
+        public int CountUserSessions(IUser user) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            lock(Sync)
+                return Sessions.Values.Count(u => u == user.UserId);
+        }
+
+        public void HandleEvent(object sender, IEvent evt) {
+            switch(evt) {
+                case ChannelUpdateEvent update: // Owner?
+                    lock(Sync) {
+                        if(update.HasName)
+                            Name = update.Name;
+                        if(update.HasTopic)
+                            Topic = update.Topic;
+                        if(update.IsTemporary.HasValue)
+                            IsTemporary = update.IsTemporary.Value;
+                        if(update.MinimumRank.HasValue)
+                            MinimumRank = update.MinimumRank.Value;
+                        if(update.HasPassword)
+                            Password = update.Password;
+                        if(update.AutoJoin.HasValue)
+                            AutoJoin = update.AutoJoin.Value;
+                        if(update.MaxCapacity.HasValue)
+                            MaxCapacity = update.MaxCapacity.Value;
+                        if(update.Order.HasValue)
+                            Order = update.Order.Value;
+                    }
+                    break;
+
+                case ChannelUserJoinEvent cuje:
+                    lock(Sync) {
+                        Sessions.Add(cuje.SessionId, cuje.UserId);
+                        Users.Add(cuje.UserId);
+                    }
+                    break;
+                case ChannelSessionJoinEvent csje:
+                    lock(Sync)
+                        Sessions.Add(csje.SessionId, csje.UserId);
+                    break;
+
+                case ChannelUserLeaveEvent cule:
+                    lock(Sync) {
+                        Users.Remove(cule.UserId);
+                        Queue<string> delete = new(Sessions.Where(s => s.Value == cule.UserId).Select(s => s.Key));
+                        while(delete.TryDequeue(out string sessionId))
+                            Sessions.Remove(sessionId);
+                    }
+                    break;
+                case ChannelSessionLeaveEvent csle:
+                    lock(Sync)
+                        Sessions.Remove(csle.SessionId);
+                    break;
+            }
+        }
+
+        public bool Equals(IChannel other)
+            => other != null && ChannelId.Equals(other.ChannelId);
+
+        public override string ToString()
+            => $@"<Channel {ChannelId}#{Name}>";
+    }
+}

SharpChat.Common/Channels/ChannelManager.cs

@@ -0,0 +1,447 @@
+using SharpChat.Configuration;
+using SharpChat.Events;
+using SharpChat.Users;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SharpChat.Channels {
+    public class ChannelException : Exception { }
+    public class ChannelExistException : ChannelException { }
+    public class ChannelInvalidNameException : ChannelException { }
+
+    public class ChannelManager : IEventHandler {
+        private Dictionary<string, Channel> Channels { get; } = new();
+
+        private IConfig Config { get; }
+        private CachedValue<string[]> ChannelIds { get; }
+
+        private IEventDispatcher Dispatcher { get; }
+        private ChatBot Bot { get; }
+        private object Sync { get; } = new();
+
+        public ChannelManager(IEventDispatcher dispatcher, IConfig config, ChatBot bot) {
+            Dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
+            Config = config ?? throw new ArgumentNullException(nameof(config));
+            Bot = bot ?? throw new ArgumentNullException(nameof(bot));
+            ChannelIds = Config.ReadCached(@"channels", new[] { @"lounge" });
+        }
+
+        public void UpdateChannels() {
+            lock(Sync) {
+                string[] channelIds = ChannelIds.Value.Clone() as string[];
+
+                foreach(IChannel channel in Channels.Values) {
+                    if(channelIds.Contains(channel.ChannelId)) {
+                        using IConfig config = Config.ScopeTo($@"channels:{channel.ChannelId}");
+                        string name = config.ReadValue(@"name", channel.ChannelId);
+                        string topic = config.ReadValue(@"topic");
+                        bool autoJoin = config.ReadValue(@"autoJoin", false);
+                        string password = null;
+                        int? minRank = null;
+                        uint? maxCapacity = null;
+
+                        if(!autoJoin) {
+                            password = config.ReadValue(@"password", string.Empty);
+                            if(string.IsNullOrEmpty(password))
+                                password = null;
+
+                            minRank = config.SafeReadValue(@"minRank", 0);
+                            maxCapacity = config.SafeReadValue(@"maxCapacity", 0u);
+                        }
+
+                        Update(channel, name, topic, false, minRank, password, autoJoin, maxCapacity);
+                    } else if(!channel.IsTemporary) // Not in config == temporary
+                        Update(channel, temporary: true);
+                }
+
+                foreach(string channelId in channelIds) {
+                    if(Channels.ContainsKey(channelId))
+                        continue;
+                    using IConfig config = Config.ScopeTo($@"channels:{channelId}");
+                    string name = config.ReadValue(@"name", channelId);
+                    string topic = config.ReadValue(@"topic");
+                    bool autoJoin = config.ReadValue(@"autoJoin", false);
+                    string password = null;
+                    int minRank = 0;
+                    uint maxCapacity = 0;
+
+                    if(!autoJoin) {
+                        password = config.ReadValue(@"password", string.Empty);
+                        if(string.IsNullOrEmpty(password))
+                            password = null;
+
+                        minRank = config.SafeReadValue(@"minRank", 0);
+                        maxCapacity = config.SafeReadValue(@"maxCapacity", 0u);
+                    }
+
+                    Create(channelId, Bot.UserId, name, topic, false, minRank, password, autoJoin, maxCapacity);
+                }
+            }
+        }
+
+        public void Remove(IChannel channel, IUser user = null) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+
+            lock(Sync) {
+                Channel chan = null;
+                if(channel is Channel c && Channels.ContainsValue(c))
+                    chan = c;
+                else if(Channels.TryGetValue(channel.ChannelId, out Channel c2))
+                    chan = c2;
+
+                if(chan == null)
+                    return; // exception?
+
+                // Remove channel from the listing
+                Channels.Remove(chan.ChannelId);
+
+                // Broadcast death
+                Dispatcher.DispatchEvent(this, new ChannelDeleteEvent(user ?? Bot, chan));
+
+                // Move all users back to the main channel
+                // TODO:!!!!!!!!! Replace this with a kick. SCv2 supports being in 0 channels, SCv1 should force the user back to DefaultChannel.
+                // Could be handled by the user/session itself?
+                //foreach(ChatUser user in channel.GetUsers()) {
+                //    Context.SwitchChannel(user, DefaultChannel);
+                //}
+
+                // Broadcast deletion of channel (deprecated)
+                /*foreach(IUser u in Users.OfRank(chan.MinimumRank))
+                    u.SendPacket(new ChannelDeletePacket(chan));*/
+            }
+        }
+
+        private bool Exists(string name) {
+            if(name == null)
+                throw new ArgumentNullException(nameof(name));
+            lock(Sync)
+                return Channels.Values.Any(c => c.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase));
+        }
+
+        private void ValidateName(string name) {
+            if(!name.All(c => char.IsLetter(c) || char.IsNumber(c) || c == '-'))
+                throw new ChannelInvalidNameException();
+            if(Exists(name))
+                throw new ChannelExistException();
+        }
+
+        public IChannel Create(
+            IUser user,
+            string name,
+            string topic = null,
+            bool temp = true,
+            int minRank = 0,
+            string password = null,
+            bool autoJoin = false,
+            uint maxCapacity = 0
+        ) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            return Create(user.UserId, name, topic, temp, minRank, password, autoJoin, maxCapacity);
+        }
+
+        public IChannel Create(
+            long ownerId,
+            string name,
+            string topic = null,
+            bool temp = true,
+            int minRank = 0,
+            string password = null,
+            bool autoJoin = false,
+            uint maxCapacity = 0
+        ) => Create(RNG.NextString(Channel.ID_LENGTH), ownerId, name, topic, temp, minRank, password, autoJoin, maxCapacity);
+
+        public IChannel Create(
+            string channelId,
+            long ownerId,
+            string name,
+            string topic = null,
+            bool temp = true,
+            int minRank = 0,
+            string password = null,
+            bool autoJoin = false,
+            uint maxCapacity = 0,
+            int order = 0
+        ) {
+            if(name == null)
+                throw new ArgumentNullException(nameof(name));
+            ValidateName(name);
+
+            lock(Sync) {
+                Channel channel = new(channelId, name, topic, temp, minRank, password, autoJoin, maxCapacity, ownerId, order);
+                Channels.Add(channel.ChannelId, channel);
+
+                Dispatcher.DispatchEvent(this, new ChannelCreateEvent(channel));
+
+                // Broadcast creation of channel (deprecated)
+                /*if(Users != null)
+                    foreach(IUser user in Users.OfRank(channel.MinimumRank))
+                        user.SendPacket(new ChannelCreatePacket(channel));*/
+
+                return channel;
+            }
+        }
+
+        public void Update(
+            IChannel channel,
+            string name = null,
+            string topic = null,
+            bool? temporary = null,
+            int? minRank = null,
+            string password = null,
+            bool? autoJoin = null,
+            uint? maxCapacity = null,
+            int? order = null
+        ) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+
+            if(!(channel is Channel c && Channels.ContainsValue(c))) {
+                if(Channels.TryGetValue(channel.ChannelId, out Channel c2))
+                    channel = c2;
+                else
+                    throw new ArgumentException(@"Provided channel is not registered with this manager.", nameof(channel));
+            }
+
+            lock(Sync) {
+                string prevName = channel.Name;
+                bool nameUpdated = !string.IsNullOrWhiteSpace(name) && name != prevName;
+
+                if(nameUpdated)
+                    ValidateName(name);
+
+                if(topic != null && channel.Topic.Equals(topic))
+                    topic = null;
+
+                if(temporary.HasValue && channel.IsTemporary == temporary.Value)
+                    temporary = null;
+
+                if(minRank.HasValue && channel.MinimumRank == minRank.Value)
+                    minRank = null;
+
+                if(password != null && channel.Password == password)
+                    password = null;
+
+                if(autoJoin.HasValue && channel.AutoJoin == autoJoin.Value)
+                    autoJoin = null;
+
+                if(maxCapacity.HasValue && channel.MaxCapacity == maxCapacity.Value)
+                    maxCapacity = null;
+
+                if(order.HasValue && channel.Order == order.Value)
+                    order = null;
+
+                Dispatcher.DispatchEvent(this, new ChannelUpdateEvent(channel, Bot, name, topic, temporary, minRank, password, autoJoin, maxCapacity, order));
+
+                // Users that no longer have access to the channel/gained access to the channel by the hierarchy change should receive delete and create packets respectively
+                // TODO: should be moved to the usermanager probably
+                /*foreach(IUser user in Users.OfRank(channel.MinimumRank)) {
+                    user.SendPacket(new ChannelUpdatePacket(prevName, channel));
+
+                    if(nameUpdated)
+                        user.ForceChannel();
+                }*/
+            }
+        }
+
+        public void GetChannel(Func<IChannel, bool> predicate, Action<IChannel> callback) {
+            if(predicate == null)
+                throw new ArgumentNullException(nameof(predicate));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync)
+                callback(Channels.Values.FirstOrDefault(predicate));
+        }
+
+        public void GetChannelById(string channelId, Action<IChannel> callback) {
+            if(channelId == null)
+                throw new ArgumentNullException(nameof(channelId));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(channelId)) {
+                callback(null);
+                return;
+            }
+            lock(Sync)
+                callback(Channels.TryGetValue(channelId, out Channel channel) ? channel : null);
+        }
+
+        public void GetChannelByName(string name, Action<IChannel> callback) {
+            if(name == null)
+                throw new ArgumentNullException(nameof(name));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(name)) {
+                callback(null);
+                return;
+            }
+            GetChannel(c => name.Equals(c.Name, StringComparison.InvariantCultureIgnoreCase), callback);
+        }
+
+        public void GetChannel(IChannel channel, Action<IChannel> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync) {
+                if(channel is Channel c && Channels.ContainsValue(c)) {
+                    callback(c);
+                    return;
+                }
+
+                GetChannel(channel.Equals, callback);
+            }
+        }
+
+        public void GetChannels(Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync) {
+                IEnumerable<IChannel> channels = Channels.Values;
+                if(ordered)
+                    channels = channels.OrderBy(c => c.Order);
+                callback(channels);
+            }
+        }
+
+        public void GetChannels(Func<IChannel, bool> predicate, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(predicate == null)
+                throw new ArgumentNullException(nameof(predicate));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            lock(Sync) {
+                IEnumerable<IChannel> channels = Channels.Values.Where(predicate);
+                if(ordered)
+                    channels = channels.OrderBy(c => c.Order);
+                callback(channels);
+            }
+        }
+
+        public void GetDefaultChannels(Action<IEnumerable<IChannel>> callback, bool ordered = true) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            // it doesn't really make sense for a channel to be temporary and autojoin
+            // maybe reconsider this in the future if the temp channel nuking strategy has adjusted
+            GetChannels(c => c.AutoJoin && !c.IsTemporary, callback, ordered);
+        }
+
+        public void GetChannelsById(IEnumerable<string> channelIds, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(channelIds == null)
+                throw new ArgumentNullException(nameof(channelIds));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(c => channelIds.Contains(c.ChannelId), callback, ordered);
+        }
+
+        public void GetChannelsByName(IEnumerable<string> names, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(names == null)
+                throw new ArgumentNullException(nameof(names));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(c => names.Contains(c.Name), callback, ordered);
+        }
+
+        public void GetChannels(IEnumerable<IChannel> channels, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(channels == null)
+                throw new ArgumentNullException(nameof(channels));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(c1 => channels.Any(c2 => c2.Equals(c1)), callback, ordered);
+        }
+
+        public void GetChannels(int minRank, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(c => c.MinimumRank <= minRank, callback, ordered);
+        }
+
+        public void GetChannels(IUser user, Action<IEnumerable<IChannel>> callback, bool ordered = false) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(c => c is Channel channel && channel.HasUser(user), callback, ordered);
+        }
+
+        public void VerifyPassword(IChannel channel, string password, Action<bool> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(password == null)
+                throw new ArgumentNullException(nameof(password));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            GetChannel(channel, c => {
+                if(c is not Channel channel) {
+                    callback(false);
+                    return;
+                }
+                
+                if(!channel.HasPassword) {
+                    callback(true);
+                    return;
+                }
+
+                callback(channel.VerifyPassword(password));
+            });
+        }
+
+        private void OnCreate(object sender, ChannelCreateEvent cce) {
+            if(sender == this)
+                return;
+
+            lock(Sync) {
+                if(Exists(cce.Name))
+                    throw new ArgumentException(@"Channel already registered??????", nameof(cce));
+
+                Channels.Add(cce.ChannelId, new Channel(
+                    cce.ChannelId,
+                    cce.Name,
+                    cce.Topic,
+                    cce.IsTemporary,
+                    cce.MinimumRank,
+                    cce.Password,
+                    cce.AutoJoin,
+                    cce.MaxCapacity,
+                    cce.UserId,
+                    cce.Order
+                ));
+            }
+        }
+
+        private void OnDelete(object sender, ChannelDeleteEvent cde) {
+            if(sender == this)
+                return;
+
+            lock(Sync)
+                Channels.Remove(cde.ChannelId);
+        }
+
+        private void OnEvent(object sender, IEvent evt) {
+            Channel channel;
+            lock(Sync)
+                if(!Channels.TryGetValue(evt.ChannelId, out channel))
+                    channel = null;
+            channel?.HandleEvent(sender, evt);
+        }
+
+        public void HandleEvent(object sender, IEvent evt) {
+            switch(evt) {
+                case ChannelCreateEvent cce:
+                    OnCreate(sender, cce);
+                    break;
+                case ChannelDeleteEvent cde:
+                    OnDelete(sender, cde);
+                    break;
+
+                case ChannelUpdateEvent _:
+                case ChannelUserJoinEvent _:
+                case ChannelUserLeaveEvent _:
+                    OnEvent(sender, evt);
+                    break;
+            }
+        }
+    }
+}

SharpChat.Common/Channels/ChannelUserRelations.cs

@@ -0,0 +1,421 @@
+using SharpChat.Events;
+using SharpChat.Messages;
+using SharpChat.Sessions;
+using SharpChat.Users;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SharpChat.Channels {
+    public class ChannelUserRelations : IEventHandler {
+        private IEventDispatcher Dispatcher { get; }
+        private ChannelManager Channels { get; }
+        private UserManager Users { get; }
+        private SessionManager Sessions { get; }
+        private MessageManager Messages { get; }
+
+        public ChannelUserRelations(
+            IEventDispatcher dispatcher,
+            ChannelManager channels,
+            UserManager users,
+            SessionManager sessions,
+            MessageManager messages
+        ) {
+            Dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
+            Channels = channels ?? throw new ArgumentNullException(nameof(channels));
+            Users = users ?? throw new ArgumentNullException(nameof(users));
+            Sessions = sessions ?? throw new ArgumentNullException(nameof(sessions));
+            Messages = messages ?? throw new ArgumentNullException(nameof(messages));
+        }
+
+        public void HasUser(IChannel channel, IUser user, Action<bool> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            Channels.GetChannel(channel, c => {
+                if(c is not Channel channel) {
+                    callback(false);
+                    return;
+                }
+
+                callback(channel.HasUser(user));
+            });
+        }
+
+        public void HasSession(IChannel channel, ISession session, Action<bool> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(session == null)
+                throw new ArgumentNullException(nameof(session));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            Channels.GetChannel(channel, c => {
+                if(c is not Channel channel) {
+                    callback(false);
+                    return;
+                }
+
+                callback(channel.HasSession(session));
+            });
+        }
+
+        public void CountUsers(IChannel channel, Action<int> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            Channels.GetChannel(channel, c => {
+                if(c is not Channel channel) {
+                    callback(-1);
+                    return;
+                }
+
+                callback(channel.CountUsers());
+            });
+        }
+
+        public void CountUserSessions(IChannel channel, IUser user, Action<int> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            Channels.GetChannel(channel, c => {
+                if(c is not Channel channel) {
+                    callback(-1);
+                    return;
+                }
+
+                callback(channel.CountUserSessions(user));
+            });
+        }
+
+        public void CheckOverCapacity(IChannel channel, IUser user, Action<bool> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            Channels.GetChannel(channel, channel => {
+                if(channel == null) {
+                    callback(true);
+                    return;
+                }
+
+                if(!channel.HasMaxCapacity() || user.UserId == channel.OwnerId) {
+                    callback(false);
+                    return;
+                }
+
+                CountUsers(channel, userCount => callback(channel == null || userCount >= channel.MaxCapacity));
+            });
+        }
+
+        public void GetUsersByChannelId(string channelId, Action<IEnumerable<ILocalUser>> callback) {
+            if(channelId == null)
+                throw new ArgumentNullException(nameof(channelId));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(channelId)) {
+                callback(Enumerable.Empty<ILocalUser>());
+                return;
+            }
+            Channels.GetChannelById(channelId, c => GetUsersWithChannelCallback(c, callback));
+        }
+
+        public void GetUsersByChannelName(string channelName, Action<IEnumerable<ILocalUser>> callback) {
+            if(channelName == null)
+                throw new ArgumentNullException(nameof(channelName));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(channelName)) {
+                callback(Enumerable.Empty<ILocalUser>());
+                return;
+            }
+            Channels.GetChannelByName(channelName, c => GetUsersWithChannelCallback(c, callback));
+        }
+
+        public void GetUsers(IChannel channel, Action<IEnumerable<ILocalUser>> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            Channels.GetChannel(channel, c => GetUsersWithChannelCallback(c, callback));
+        }
+
+        private void GetUsersWithChannelCallback(IChannel c, Action<IEnumerable<ILocalUser>> callback) {
+            if(c is not Channel channel) {
+                callback(Enumerable.Empty<ILocalUser>());
+                return;
+            }
+
+            channel.GetUserIds(ids => Users.GetUsers(ids, callback));
+        }
+
+        public void GetUsers(IEnumerable<IChannel> channels, Action<IEnumerable<ILocalUser>> callback) {
+            if(channels == null)
+                throw new ArgumentNullException(nameof(channels));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            // this is pretty disgusting
+            Channels.GetChannels(channels, channels => {
+                HashSet<long> ids = new();
+
+                foreach(IChannel c in channels) {
+                    if(c is not Channel channel)
+                        continue;
+
+                    channel.GetUserIds(u => {
+                        foreach(long id in u)
+                            ids.Add(id);
+                    });
+                }
+
+                Users.GetUsers(ids, callback);
+            });
+        }
+
+        // this makes me cry
+        public void GetUsers(IUser user, Action<IEnumerable<ILocalUser>> callback) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+
+            HashSet<ILocalUser> all = new();
+
+            Channels.GetChannels(channels => {
+                foreach(IChannel channel in channels) {
+                    GetUsers(channel, users => {
+                        foreach(ILocalUser user in users)
+                            all.Add(user);
+                    });
+                }
+            });
+
+            callback(all);
+        }
+
+        public void GetLocalSessionsByChannelId(string channelId, Action<IEnumerable<ISession>> callback) {
+            if(channelId == null)
+                throw new ArgumentNullException(nameof(channelId));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(channelId)) {
+                callback(Enumerable.Empty<ISession>());
+                return;
+            }
+            Channels.GetChannelById(channelId, c => GetLocalSessionsChannelCallback(c, callback));
+        }
+
+        public void GetLocalSessionsByChannelName(string channelName, Action<IEnumerable<ISession>> callback) {
+            if(channelName == null)
+                throw new ArgumentNullException(nameof(channelName));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(string.IsNullOrWhiteSpace(channelName)) {
+                callback(Enumerable.Empty<ISession>());
+                return;
+            }
+            Channels.GetChannelByName(channelName, c => GetLocalSessionsChannelCallback(c, callback));
+        }
+
+        public void GetLocalSessions(IChannel channel, Action<IEnumerable<ISession>> callback) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            Channels.GetChannel(channel, c => GetLocalSessionsChannelCallback(c, callback));
+        }
+
+        private void GetLocalSessionsChannelCallback(IChannel c, Action<IEnumerable<ISession>> callback) {
+            if(c is not Channel channel) {
+                callback(Enumerable.Empty<ISession>());
+                return;
+            }
+
+            channel.GetSessionIds(ids => Sessions.GetLocalSessions(ids, callback));
+        }
+
+        public void GetLocalSessions(IUser user, Action<IEnumerable<ISession>> callback) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            GetChannels(user, channels => GetLocalSessionsUserCallback(channels, callback));
+        }
+
+        public void GetLocalSessionsByUserId(long userId, Action<IUser, IEnumerable<ISession>> callback) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(userId < 1) {
+                callback(null, Enumerable.Empty<ISession>());
+                return;
+            }
+            GetChannelsByUserId(userId, (user, channels) => GetLocalSessionsUserCallback(channels, sessions => callback(user, sessions)));
+        }
+
+        private void GetLocalSessionsUserCallback(IEnumerable<IChannel> channels, Action<IEnumerable<ISession>> callback) {
+            if(!channels.Any()) {
+                callback(Enumerable.Empty<ISession>());
+                return;
+            }
+
+            Channels.GetChannels(channels, channels => {
+                HashSet<string> sessionIds = new();
+
+                foreach(IChannel c in channels) {
+                    if(c is not Channel channel)
+                        continue;
+                    channel.GetSessionIds(ids => {
+                        foreach(string id in ids)
+                            sessionIds.Add(id);
+                    });
+                }
+
+                Sessions.GetLocalSessions(sessionIds, callback);
+            });
+        }
+
+        public void GetChannelsByUserId(long userId, Action<IUser, IEnumerable<IChannel>> callback) {
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            if(userId < 1) {
+                callback(null, Enumerable.Empty<IChannel>());
+                return;
+            }
+            Users.GetUser(userId, u => GetChannelsUserCallback(u, channels => callback(u, channels)));
+        }
+
+        public void GetChannels(IUser user, Action<IEnumerable<IChannel>> callback) {
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+            if(callback == null)
+                throw new ArgumentNullException(nameof(callback));
+            Users.GetUser(user, u => GetChannelsUserCallback(u, callback));
+        }
+
+        private void GetChannelsUserCallback(IUser u, Action<IEnumerable<IChannel>> callback) {
+            if(u is not User user) {
+                callback(Enumerable.Empty<IChannel>());
+                return;
+            }
+
+            user.GetChannels(c => Channels.GetChannelsByName(c, callback));
+        }
+
+        public void JoinChannel(IChannel channel, ISession session) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(session == null)
+                throw new ArgumentNullException(nameof(session));
+
+            HasSession(channel, session, hasSession => {
+                if(hasSession)
+                    return;
+
+                // SessionJoin and UserJoin should be combined
+                HasUser(channel, session.User, HasUser => {
+                    Dispatcher.DispatchEvent(
+                        this,
+                        HasUser
+                            ? new ChannelSessionJoinEvent(channel, session)
+                            : new ChannelUserJoinEvent(channel, session)
+                    );
+                });
+            });
+        }
+
+        public void LeaveChannel(IChannel channel, IUser user, UserDisconnectReason reason = UserDisconnectReason.Unknown) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(user == null)
+                throw new ArgumentNullException(nameof(user));
+
+            HasUser(channel, user, hasUser => {
+                if(hasUser)
+                    Dispatcher.DispatchEvent(this, new ChannelUserLeaveEvent(user, channel, reason));
+            });
+        }
+
+        public void LeaveChannel(IChannel channel, ISession session) {
+            if(channel == null)
+                throw new ArgumentNullException(nameof(channel));
+            if(session == null)
+                throw new ArgumentNullException(nameof(session));
+
+            HasSession(channel, session, hasSession => {
+                // UserLeave and SessionLeave should be combined
+                CountUserSessions(channel, session.User, sessionCount => {
+                    Dispatcher.DispatchEvent(
+                        this,
+                        sessionCount <= 1
+                            ? new ChannelUserLeaveEvent(session.User, channel, UserDisconnectReason.Leave)
+                            : new ChannelSessionLeaveEvent(channel, session)
+                    );
+                });
+            });
+        }
+
+        public void LeaveChannels(ISession session) {
+            if(session == null)
+                throw new ArgumentNullException(nameof(session));
+
+            Channels.GetChannels(channels => {
+                foreach(IChannel channel in channels)
+                    LeaveChannel(channel, session);
+            });
+        }
+
+        public void HandleEvent(object sender, IEvent evt) {
+            switch(evt) {
+                case UserUpdateEvent uue: // fetch up to date user info
+                    GetChannelsByUserId(evt.UserId, (user, channels) => GetUsers(channels, users => {
+                        foreach(ILocalUser user in users)
+                            GetLocalSessions(user, sessions => {
+                                foreach(ISession session in sessions)
+                                    session.HandleEvent(sender, new UserUpdateEvent(user, uue));
+                            });
+                    }));
+                    break;
+
+                case ChannelUserJoinEvent cje:
+                    // THIS DOES NOT DO WHAT YOU WANT IT TO DO
+                    // I THINK
+                    // it really doesn't, figure out how to leave channels when MCHAN isn't active for the session
+                    //if((Sessions.GetCapabilities(cje.User) & ClientCapability.MCHAN) == 0)
+                    //    LeaveChannel(cje.Channel, cje.User, UserDisconnectReason.Leave);
+                    break;
+
+                case ChannelUserLeaveEvent cle: // Should ownership just be passed on to another user instead of Destruction?
+                    Channels.GetChannelById(evt.ChannelId, channel => {
+                        if(channel.IsTemporary && evt.UserId == channel.OwnerId)
+                            Channels.Remove(channel);
+                    });
+                    break;
+
+                case SessionDestroyEvent sde:
+                    Users.GetUser(sde.UserId, user => {
+                        if(user == null)
+                            return;
+                        Sessions.GetSessionCount(user, sessionCount => {
+                            if(sessionCount < 1)
+                                Users.Disconnect(user, UserDisconnectReason.TimeOut);
+                        });
+                    });
+                    break;
+            }
+        }
+    }
+}

SharpChat.Common/Channels/IChannel.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace SharpChat.Channels {
+    public interface IChannel : IEquatable<IChannel> {
+        string ChannelId { get; }
+        string Name { get; }
+        string Topic { get; }
+        bool IsTemporary { get; }
+        int MinimumRank { get; }
+        bool AutoJoin { get; }
+        uint MaxCapacity { get; }
+        int Order { get; }
+        long OwnerId { get; }
+
+        string Password { get; }
+        bool HasPassword { get; }
+    }
+}

SharpChat.Common/Channels/IChannelExtensions.cs

@@ -0,0 +1,11 @@
+using SharpChat.Users;
+
+namespace SharpChat.Channels {
+    public static class IChannelExtensions {
+        public static bool HasMaxCapacity(this IChannel channel)
+            => channel.MaxCapacity != 0;
+
+        public static bool IsOwner(this IChannel channel, IUser user)
+            => channel != null && user != null && channel.OwnerId == user.UserId;
+    }
+}

SharpChat.Common/Colour.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace SharpChat {
+    public readonly struct Colour : IEquatable<Colour?> {
+        public const int INHERIT = 0x40000000;
+
+        public int Raw { get; }
+
+        public Colour(int argb) {
+            Raw = argb;
+        }
+
+        public static implicit operator Colour(int argb) => new(argb);
+
+        public bool Equals(Colour? other)
+            => other.HasValue && other.Value.Raw == Raw;
+
+        public bool Inherit => (Raw & INHERIT) > 0;
+        public int Red => (Raw >> 16) & 0xFF;
+        public int Green => (Raw >> 8) & 0xFF;
+        public int Blue => Raw & 0xFF;
+
+        public override string ToString() {
+            if (Inherit)
+                return @"inherit";
+            return string.Format(@"#{0:X6}", Raw);
+        }
+    }
+}

SharpChat.Common/Configuration/CachedValue.cs

@@ -0,0 +1,45 @@
+using System;
+
+namespace SharpChat.Configuration {
+    public class CachedValue<T> {
+        private IConfig Config { get; }
+        private string Name { get; }
+        private TimeSpan Lifetime { get; }
+        private T Fallback { get; }
+        private object Sync { get; } = new();
+
+        private object CurrentValue { get; set; }
+        private DateTimeOffset LastRead { get; set; }
+
+        public T Value {
+            get {
+                lock(Sync) {
+                    DateTimeOffset now = DateTimeOffset.Now;
+                    if((now - LastRead) >= Lifetime) {
+                        LastRead = now;
+                        CurrentValue = Config.ReadValue(Name, Fallback);
+                        Logger.Debug($@"Read {Name} ({CurrentValue})");
+                    }
+                }
+                return (T)CurrentValue;
+            }
+        }
+
+        public static implicit operator T(CachedValue<T> val) => val.Value;
+
+        public CachedValue(IConfig config, string name, TimeSpan lifetime, T fallback) {
+            Config = config ?? throw new ArgumentNullException(nameof(config));
+            Name = name ?? throw new ArgumentNullException(nameof(name));
+            Lifetime = lifetime;
+            Fallback = fallback;
+            if(string.IsNullOrWhiteSpace(name))
+                throw new ArgumentException(@"Name cannot be empty.", nameof(name));
+        }
+
+        public void Refresh() {
+            lock(Sync) {
+                LastRead = DateTimeOffset.MinValue;
+            }
+        }
+    }
+}

SharpChat.Common/Configuration/ConfigException.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace SharpChat.Configuration {
+    public abstract class ConfigException : Exception {
+        public ConfigException(string message) : base(message) { }
+        public ConfigException(string message, Exception ex) : base(message, ex) { }
+    }
+
+    public class ConfigLockException : ConfigException {
+        public ConfigLockException() : base(@"Unable to acquire lock for reading configuration.") { }
+    }
+
+    public class ConfigTypeException : ConfigException {
+        public ConfigTypeException(Exception ex) : base(@"Given type does not match the value in the configuration.", ex) { }
+    }
+}

SharpChat.Common/Configuration/IConfig.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace SharpChat.Configuration {
+    public interface IConfig : IDisposable {
+        /// <summary>
+        /// Creates a proxy object that forces all names to start with the given prefix.
+        /// </summary>
+        IConfig ScopeTo(string prefix);
+
+        /// <summary>
+        /// Reads a raw (string) value from the config.
+        /// </summary>
+        string ReadValue(string name, string fallback = null);
+
+        /// <summary>
+        /// Reads and casts value from the config.
+        /// </summary>
+        /// <exception cref="ConfigTypeException">Type conversion failed.</exception>
+        T ReadValue<T>(string name, T fallback = default);
+
+        /// <summary>
+        /// Reads and casts a value from the config. Returns fallback when type conversion fails.
+        /// </summary>
+        T SafeReadValue<T>(string name, T fallback);
+
+        /// <summary>
+        /// Creates an object that caches the read value for a certain amount of time, avoiding disk reads for frequently used non-static values.
+        /// </summary>
+        CachedValue<T> ReadCached<T>(string name, T fallback = default, TimeSpan? lifetime = null);
+    }
+}

SharpChat.Common/Configuration/ScopedConfig.cs

@@ -0,0 +1,45 @@
+using System;
+
+namespace SharpChat.Configuration {
+    public class ScopedConfig : IConfig {
+        private IConfig Config { get; }
+        private string Prefix { get; }
+
+        public ScopedConfig(IConfig config, string prefix) {
+            Config = config ?? throw new ArgumentNullException(nameof(config));
+            Prefix = prefix ?? throw new ArgumentNullException(nameof(prefix));
+            if(string.IsNullOrWhiteSpace(prefix))
+                throw new ArgumentException(@"Prefix must exist.", nameof(prefix));
+            if(Prefix[^1] != ':')
+                Prefix += ':';
+        }
+
+        private string GetName(string name) {
+            return Prefix + name;
+        }
+
+        public string ReadValue(string name, string fallback = null) {
+            return Config.ReadValue(GetName(name), fallback);
+        }
+
+        public T ReadValue<T>(string name, T fallback = default) {
+            return Config.ReadValue(GetName(name), fallback);
+        }
+
+        public T SafeReadValue<T>(string name, T fallback) {
+            return Config.SafeReadValue(GetName(name), fallback);
+        }
+
+        public IConfig ScopeTo(string prefix) {
+            return Config.ScopeTo(GetName(prefix));
+        }
+
+        public CachedValue<T> ReadCached<T>(string name, T fallback = default, TimeSpan? lifetime = null) {
+            return Config.ReadCached(GetName(name), fallback, lifetime);
+        }
+
+        public void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+    }
+}

SharpChat.Common/Configuration/StreamConfig.cs

@@ -0,0 +1,112 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+
+namespace SharpChat.Configuration {
+    public class StreamConfig : IConfig {
+        private Stream Stream { get; }
+        private StreamReader StreamReader { get; }
+        private Mutex Lock { get; }
+
+        private const int LOCK_TIMEOUT = 10000;
+
+        private static readonly TimeSpan CACHE_LIFETIME = TimeSpan.FromMinutes(15);
+
+        public StreamConfig(string fileName)
+            : this(new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite)) {}
+
+        public StreamConfig(Stream stream) {
+            Stream = stream ?? throw new ArgumentNullException(nameof(stream));
+            if(!Stream.CanRead)
+                throw new ArgumentException(@"Provided stream must be readable.", nameof(stream));
+            if(!Stream.CanSeek)
+                throw new ArgumentException(@"Provided stream must be seekable.", nameof(stream));
+            StreamReader = new StreamReader(stream, new UTF8Encoding(false), false);
+            Lock = new Mutex();
+        }
+
+        public string ReadValue(string name, string fallback = null) {
+            if(!Lock.WaitOne(LOCK_TIMEOUT)) // don't catch this, if this happens something is Very Wrong
+                throw new ConfigLockException();
+
+            try {
+                Stream.Seek(0, SeekOrigin.Begin);
+
+                string line;
+                while((line = StreamReader.ReadLine()) != null) {
+                    if(string.IsNullOrWhiteSpace(line))
+                        continue;
+
+                    line = line.TrimStart();
+                    if(line.StartsWith(@";") || line.StartsWith(@"#"))
+                        continue;
+
+                    string[] parts = line.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries);
+                    if(parts.Length < 2 || !string.Equals(parts[0], name))
+                        continue;
+
+                    return parts[1];
+                }
+            } finally {
+                Lock.ReleaseMutex();
+            }
+
+            return fallback;
+        }
+
+        public T ReadValue<T>(string name, T fallback = default) {
+            object value = ReadValue(name);
+            if(value == null)
+                return fallback;
+
+            Type type = typeof(T);
+            if(value is string strVal) {
+                if(type == typeof(bool))
+                    value = !string.Equals(strVal, @"0", StringComparison.InvariantCultureIgnoreCase)
+                        && !string.Equals(strVal, @"false", StringComparison.InvariantCultureIgnoreCase);
+                else if(type == typeof(string[]))
+                    value = strVal.Split(' ');
+            }
+
+            try {
+                return (T)Convert.ChangeType(value, type);
+            } catch(InvalidCastException ex) {
+                throw new ConfigTypeException(ex);
+            }
+        }
+
+        public T SafeReadValue<T>(string name, T fallback) {
+            try {
+                return ReadValue(name, fallback);
+            } catch(ConfigTypeException) {
+                return fallback;
+            }
+        }
+
+        public IConfig ScopeTo(string prefix) {
+            return new ScopedConfig(this, prefix);
+        }
+        
+        public CachedValue<T> ReadCached<T>(string name, T fallback = default, TimeSpan? lifetime = null) {
+            return new CachedValue<T>(this, name, lifetime ?? CACHE_LIFETIME, fallback);
+        }
+
+        private bool IsDisposed;
+        ~StreamConfig()
+            => DoDispose();
+        public void Dispose() {
+            DoDispose();
+            GC.SuppressFinalize(this);
+        }
+        private void DoDispose() {
+            if(IsDisposed)
+                return;
+            IsDisposed = true;
+
+            StreamReader.Dispose();
+            Stream.Dispose();
+            Lock.Dispose();
+        }
+    }
+}

SharpChat.Common/Context.cs

@@ -0,0 +1,145 @@
+using SharpChat.Bans;
+using SharpChat.Channels;
+using SharpChat.Configuration;
+using SharpChat.Database;
+using SharpChat.DataProvider;
+using SharpChat.Events;
+using SharpChat.Messages;
+using SharpChat.Messages.Storage;
+using SharpChat.RateLimiting;
+using SharpChat.Sessions;
+using SharpChat.Users;
+using SharpChat.Users.Remote;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+
+namespace SharpChat {
+    public class Context : IDisposable {
+        public const int ID_LENGTH = 8;
+        public string ServerId { get; }
+
+        public EventDispatcher Events { get; }
+        public SessionManager Sessions { get; }
+        public UserManager Users { get; }
+        public ChannelManager Channels { get; }
+        public ChannelUserRelations ChannelUsers { get; }
+        public MessageManager Messages { get; }
+        public BanManager Bans { get; }
+
+        public IDataProvider DataProvider { get; }
+        public RateLimitManager RateLimiting { get; }
+
+        public WelcomeMessage WelcomeMessage { get; }
+
+        public ChatBot Bot { get; } = new(); 
+
+        private Timer BumpTimer { get; }
+
+        public DateTimeOffset Created { get; }
+
+        public Context(IConfig config, IDatabaseBackend databaseBackend, IDataProvider dataProvider) {
+            if(config == null)
+                throw new ArgumentNullException(nameof(config));
+
+            ServerId = RNG.NextString(ID_LENGTH); // maybe read this from the cfg instead
+            Created = DateTimeOffset.Now; // read this from config definitely
+
+            DatabaseWrapper db = new(databaseBackend ?? throw new ArgumentNullException(nameof(databaseBackend)));
+            IMessageStorage msgStore = db.IsNullBackend
+                ? new MemoryMessageStorage()
+                : new ADOMessageStorage(db);
+
+            Events = new EventDispatcher();
+            DataProvider = dataProvider ?? throw new ArgumentNullException(nameof(dataProvider));
+            Users = new UserManager(Events);
+            Sessions = new SessionManager(Events, Users, config.ScopeTo(@"sessions"), ServerId);
+            Messages = new MessageManager(Events, msgStore, config.ScopeTo(@"messages"));
+            Channels = new ChannelManager(Events, config, Bot);
+            ChannelUsers = new ChannelUserRelations(Events, Channels, Users, Sessions, Messages);
+            Bans = new BanManager(Users, DataProvider.BanClient, DataProvider.UserClient, Events);
+            RateLimiting = new RateLimitManager(config.ScopeTo(@"rateLimit"));
+
+            WelcomeMessage = new WelcomeMessage(config.ScopeTo(@"welcome"));
+
+            Events.AddEventHandler(Sessions);
+            Events.ProtectEventHandler(Sessions);
+            Events.AddEventHandler(Users);
+            Events.ProtectEventHandler(Users);
+            Events.AddEventHandler(Channels);
+            Events.ProtectEventHandler(Channels);
+            Events.AddEventHandler(ChannelUsers);
+            Events.ProtectEventHandler(ChannelUsers);
+            Events.AddEventHandler(Messages);
+            Events.ProtectEventHandler(Messages);
+
+            Events.StartProcessing();
+
+            Channels.UpdateChannels();
+
+            // Should probably not rely on Timers in the future
+            BumpTimer = new Timer(e => {
+                Logger.Write(@"Nuking dead sessions and bumping remote online status...");
+                Sessions.CheckTimeOut();
+
+                Sessions.GetActiveLocalSessions(sessions => {
+                    Dictionary<IUser, List<ISession>> data = new();
+
+                    foreach(ISession session in sessions) {
+                        if(!data.ContainsKey(session.User))
+                            data.Add(session.User, new());
+                        data[session.User].Add(session);
+                    }
+
+                    DataProvider.UserClient.BumpUsers(
+                        data.Select(kvp => new UserBumpInfo(kvp.Key, kvp.Value)),
+                        () => Logger.Debug(@"Successfully bumped remote online status!"),
+                        ex => { Logger.Write(@"Failed to bump remote online status."); Logger.Debug(ex); }
+                    );
+                });
+            }, null, TimeSpan.Zero, TimeSpan.FromMinutes(1));
+        }
+
+        public void BroadcastMessage(string text) {
+            Events.DispatchEvent(this, new BroadcastMessageEvent(Bot, text));
+        }
+
+        [Obsolete(@"Use ChannelUsers.JoinChannel")]
+        public void JoinChannel(IUser user, IChannel channel) {
+            // handle in channelusers
+            //channel.SendPacket(new UserChannelJoinPacket(user));
+
+            // send after join packet for v1
+            //user.SendPacket(new ContextClearPacket(channel, ContextClearMode.MessagesUsers));
+
+            // send after join
+            //ChannelUsers.GetUsers(channel, u => user.SendPacket(new ContextUsersPacket(u.Except(new[] { user }).OrderByDescending(u => u.Rank))));
+
+            // send after join, maybe add a capability that makes this implicit?
+            /*Messages.GetMessages(channel, m => {
+                foreach(IMessage msg in m)
+                    user.SendPacket(new ContextMessagePacket(msg));
+            });*/
+
+            // should happen implicitly for v1 clients
+            //user.ForceChannel(channel);
+        }
+
+        private bool IsDisposed;
+        ~Context()
+            => DoDispose();
+        public void Dispose() {
+            DoDispose();
+            GC.SuppressFinalize(this);
+        }
+        private void DoDispose() {
+            if (IsDisposed)
+                return;
+            IsDisposed = true;
+
+            BumpTimer.Dispose();
+            Events.FinishProcessing();
+        }
+    }
+}

SharpChat.Common/DataProvider/DataProviderAttribute.cs

@@ -0,0 +1,8 @@
+using SharpChat.Reflection;
+
+namespace SharpChat.DataProvider {
+    public class DataProviderAttribute : ObjectConstructorAttribute {
+        public DataProviderAttribute(string name) : base(name) {
+        }
+    }
+}

SharpChat.Common/DataProvider/IDataProvider.cs

@@ -0,0 +1,9 @@
+using SharpChat.Bans;
+using SharpChat.Users.Remote;
+
+namespace SharpChat.DataProvider {
+    public interface IDataProvider {
+        IBanClient BanClient { get; }
+        IRemoteUserClient UserClient { get; }
+    }
+}

SharpChat.Common/DataProvider/Null/NullBanClient.cs

@@ -0,0 +1,30 @@
+using SharpChat.Bans;
+using SharpChat.Users.Remote;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+
+namespace SharpChat.DataProvider.Null {
+    public class NullBanClient : IBanClient {
+        public void CheckBan(IRemoteUser subject, IPAddress ipAddress, Action<IBanRecord> onSuccess, Action<Exception> onFailure) {
+            onSuccess(null);
+        }
+
+        public void CreateBan(IRemoteUser subject, IRemoteUser moderator, bool perma, TimeSpan duration, string reason, Action<bool> onSuccess, Action<Exception> onFailure) {
+            onSuccess(true);
+        }
+
+        public void GetBanList(Action<IEnumerable<IBanRecord>> onSuccess, Action<Exception> onFailure) {
+            onSuccess(Enumerable.Empty<IBanRecord>());
+        }
+
+        public void RemoveBan(IRemoteUser subject, Action<bool> onSuccess, Action<Exception> onFailure) {
+            onSuccess(false);
+        }
+
+        public void RemoveBan(IPAddress ipAddress, Action<bool> onSuccess, Action<Exception> onFailure) {
+            onSuccess(false);
+        }
+    }
+}

SharpChat.Common/DataProvider/Null/NullDataProvider.cs

@@ -0,0 +1,15 @@
+using SharpChat.Bans;
+using SharpChat.Users.Remote;
+
+namespace SharpChat.DataProvider.Null {
+    [DataProvider(@"null")]
+    public class NullDataProvider : IDataProvider {
+        public IBanClient BanClient { get; }
+        public IRemoteUserClient UserClient { get; }
+
+        public NullDataProvider() {
+            BanClient = new NullBanClient();
+            UserClient = new NullUserClient();
+        }
+    }
+}

SharpChat.Common/DataProvider/Null/NullUserAuthResponse.cs

@@ -0,0 +1,28 @@
+using SharpChat.Users;
+using SharpChat.Users.Remote;
+using System;
+
+namespace SharpChat.DataProvider.Null {
+    public class NullUserAuthResponse : IUserAuthResponse {
+        public long UserId { get; }
+        public string UserName { get; }
+        public int Rank { get; }
+        public Colour Colour { get; }
+        public UserPermissions Permissions { get; }
+        public DateTimeOffset SilencedUntil => DateTimeOffset.MinValue;
+
+        public NullUserAuthResponse(UserAuthRequest uar) {
+            UserId = uar.UserId;
+            UserName = $@"Misaka-{uar.UserId}";
+            Rank = (int)(uar.UserId % 10);
+            Random rng = new((int)uar.UserId);
+            Colour = new(rng.Next());
+            Permissions = (UserPermissions)rng.Next();
+        }
+
+        public bool Equals(IUser other)
+            => other is NullUserAuthResponse && other.UserId == UserId;
+        public bool Equals(IRemoteUser other)
+            => other is NullUserAuthResponse && other.UserId == UserId;
+    }
+}

SharpChat.Common/DataProvider/Null/NullUserClient.cs

@@ -0,0 +1,33 @@
+using SharpChat.Users;
+using SharpChat.Users.Remote;
+using System;
+using System.Collections.Generic;
+
+namespace SharpChat.DataProvider.Null {
+    public class NullUserClient : IRemoteUserClient {
+        public void AuthenticateUser(UserAuthRequest request, Action<IUserAuthResponse> onSuccess, Action<Exception> onFailure) {
+            if(request.Token.StartsWith(@"FAIL:")) {
+                onFailure(new UserAuthFailedException(request.Token[5..]));
+                return;
+            }
+
+            onSuccess(new NullUserAuthResponse(request));
+        }
+
+        public void BumpUsers(IEnumerable<UserBumpInfo> users, Action onSuccess, Action<Exception> onFailure) {
+            onSuccess();
+        }
+
+        public void ResolveUser(long userId, Action<IRemoteUser> onSuccess, Action<Exception> onFailure) {
+            onSuccess(null);
+        }
+
+        public void ResolveUser(string userName, Action<IRemoteUser> onSuccess, Action<Exception> onFailure) {
+            onSuccess(null);
+        }
+
+        public void ResolveUser(IUser localUser, Action<IRemoteUser> onSuccess, Action<Exception> onFailure) {
+            onSuccess(null);
+        }
+    }
+}

SharpChat.Common/Database/ADODatabaseReader.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Data.Common;
+
+namespace SharpChat.Database {
+    public class ADODatabaseReader : IDatabaseReader {
+        private DbDataReader Reader { get; }
+
+        public ADODatabaseReader(DbDataReader reader) {
+            Reader = reader;
+        }
+
+        public bool Next()
+            => Reader.Read();
+
+        public string GetName(int ordinal)
+            => Reader.GetName(ordinal);
+        public int GetOrdinal(string name)
+            => Reader.GetOrdinal(name);
+
+        public bool IsNull(int ordinal)
+            => Reader.IsDBNull(ordinal);
+        public bool IsNull(string name)
+            => Reader.IsDBNull(GetOrdinal(name));
+
+        public object GetValue(int ordinal)
+            => Reader.GetValue(ordinal);
+        public object GetValue(string name)
+            => Reader.GetValue(GetOrdinal(name));
+
+        public string ReadString(int ordinal)
+            => Reader.GetString(ordinal);
+        public string ReadString(string name)
+            => Reader.GetString(GetOrdinal(name));
+
+        public byte ReadU8(int ordinal)
+            => Reader.GetByte(ordinal);
+        public byte ReadU8(string name)
+            => Reader.GetByte(GetOrdinal(name));
+
+        public short ReadI16(int ordinal)
+            => Reader.GetInt16(ordinal);
+        public short ReadI16(string name)
+            => Reader.GetInt16(GetOrdinal(name));
+
+        public int ReadI32(int ordinal)
+            => Reader.GetInt32(ordinal);
+        public int ReadI32(string name)
+            => Reader.GetInt32(GetOrdinal(name));
+
+        public long ReadI64(int ordinal)
+            => Reader.GetInt64(ordinal);
+        public long ReadI64(string name)
+            => Reader.GetInt64(GetOrdinal(name));
+
+        public float ReadF32(int ordinal)
+            => Reader.GetFloat(ordinal);
+        public float ReadF32(string name)
+            => Reader.GetFloat(GetOrdinal(name));
+
+        public double ReadF64(int ordinal)
+            => Reader.GetDouble(ordinal);
+        public double ReadF64(string name)
+            => Reader.GetDouble(GetOrdinal(name));
+
+        private bool IsDisposed;
+        ~ADODatabaseReader()
+            => DoDispose();
+        public void Dispose() {
+            DoDispose();
+            GC.SuppressFinalize(this);
+        }
+        private void DoDispose() {
+            if(IsDisposed)
+                return;
+            IsDisposed = true;
+
+            if(Reader is IDisposable disposable)
+                disposable.Dispose();
+        }
+    }
+}

SharpChat.Common/Database/DatabaseBackendAttribute.cs

@@ -0,0 +1,8 @@
+using SharpChat.Reflection;
+
+namespace SharpChat.Database {
+    public class DatabaseBackendAttribute : ObjectConstructorAttribute {
+        public DatabaseBackendAttribute(string name) : base(name) {
+        }
+    }
+}

SharpChat.Common/Database/DatabaseException.cs

@@ -0,0 +1,7 @@
+using System;
+
+namespace SharpChat.Database {
+    public class DatabaseException : Exception {}
+
+    public class InvalidParameterClassTypeException : DatabaseException { }
+}

SharpChat.Common/Database/DatabaseType.cs

@@ -0,0 +1,14 @@
+namespace SharpChat.Database {
+    public enum DatabaseType {
+        AsciiString,
+        UnicodeString,
+        Int8,
+        Int16,
+        Int32,
+        Int64,
+        UInt8,
+        UInt16,
+        UInt32,
+        UInt64,
+    }
+}

SharpChat.Common/Database/DatabaseWrapper.cs

@@ -0,0 +1,109 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SharpChat.Database {
+    public class DatabaseWrapper {
+        private IDatabaseBackend Backend { get; }
+
+        public bool IsNullBackend
+            => Backend is Null.NullDatabaseBackend;
+
+        public DatabaseWrapper(IDatabaseBackend backend) {
+            Backend = backend ?? throw new ArgumentNullException(nameof(backend));
+        }
+
+        public IDatabaseParameter CreateParam(string name, object value)
+            => Backend.CreateParameter(name, value);
+
+        public string TimestampType
+            => Backend.TimestampType;
+        public string TextType
+            => Backend.TextType;
+        public string BlobType
+            => Backend.BlobType;
+        public string VarCharType(int size)
+            => Backend.VarCharType(size);
+        public string VarBinaryType(int size)
+            => Backend.VarBinaryType(size);
+        public string BigIntType(int length)
+            => Backend.BigIntType(length);
+        public string BigUIntType(int length)
+            => Backend.BigUIntType(length);
+        public string IntType(int length)
+            => Backend.IntType(length);
+        public string UIntType(int length)
+            => Backend.UIntType(length);
+        public string TinyIntType(int length)
+            => Backend.TinyIntType(length);
+        public string TinyUIntType(int length)
+            => Backend.TinyUIntType(length);
+
+        public string ToUnixTime(string param)
+            => Backend.ToUnixTime(param);
+        public string FromUnixTime(string param)
+            => Backend.FromUnixTime(param);
+        public string DateTimeNow()
+            => Backend.DateTimeNow();
+
+        public string Concat(params string[] args)
+            => Backend.Concat(args);
+        public string ToLower(string param)
+            => Backend.ToLower(param);
+
+        public bool SupportsJson
+            => Backend.SupportsJson;
+        public string JsonValue(string field, string path)
+            => Backend.JsonValue(field, path);
+
+        public bool SupportsAlterTableCollate
+            => Backend.SupportsAlterTableCollate;
+
+        public string AsciiCollation
+            => Backend.AsciiCollation;
+        public string UnicodeCollation
+            => Backend.UnicodeCollation;
+
+        public void RunCommand(object query, int timeout, Action<IDatabaseCommand> action, params IDatabaseParameter[] @params) {
+#if LOG_SQL
+            Logger.Debug(query);
+#endif
+            using IDatabaseConnection conn = Backend.CreateConnection();
+            using IDatabaseCommand comm = conn.CreateCommand(query);
+            comm.CommandTimeout = timeout;
+            if(@params.Any()) {
+                comm.AddParameters(@params);
+                comm.Prepare();
+            }
+            action.Invoke(comm);
+        }
+
+        public void RunCommand(object query, Action<IDatabaseCommand> action, params IDatabaseParameter[] @params)
+            => RunCommand(query, 30, action, @params);
+
+        public int RunCommand(object query, params IDatabaseParameter[] @params) {
+            int affected = 0;
+            RunCommand(query, comm => affected = comm.Execute(), @params);
+            return affected;
+        }
+
+        public int RunCommand(object query, int timeout, params IDatabaseParameter[] @params) {
+            int affected = 0;
+            RunCommand(query, timeout, comm => affected = comm.Execute(), @params);
+            return affected;
+        }
+
+        public object RunQueryValue(object query, params IDatabaseParameter[] @params) {
+            object value = null;
+            RunCommand(query, comm => value = comm.ExecuteScalar(), @params);
+            return value;
+        }
+
+        public void RunQuery(object query, Action<IDatabaseReader> action, params IDatabaseParameter[] @params) {
+            RunCommand(query, comm => {
+                using IDatabaseReader reader = comm.ExecuteReader();
+                action.Invoke(reader);
+            }, @params);
+        }
+    }
+}

SharpChat.Common/Database/IDatabaseBackend.cs

@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+
+namespace SharpChat.Database {
+    public interface IDatabaseBackend {
+        IDatabaseConnection CreateConnection();
+
+        IDatabaseParameter CreateParameter(string name, object value);
+        IDatabaseParameter CreateParameter(string name, DatabaseType type);
+
+        string TimestampType { get; }
+        string TextType { get; }
+        string BlobType { get; }
+        string VarCharType(int length);
+        string VarBinaryType(int length);
+        string BigIntType(int length);
+        string BigUIntType(int length);
+        string IntType(int length);
+        string UIntType(int length);
+        string TinyIntType(int length);
+        string TinyUIntType(int length);
+
+        string FromUnixTime(string param);
+        string ToUnixTime(string param);
+        string DateTimeNow();
+
+        string Concat(params string[] args);
+        string ToLower(string param);
+
+        bool SupportsJson { get; }
+        string JsonValue(string field, string path);
+
+        bool SupportsAlterTableCollate { get; }
+
+        string AsciiCollation { get; }
+        string UnicodeCollation { get; }
+    }
+}

SharpChat.Common/Database/IDatabaseCommand.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace SharpChat.Database {
+    public interface IDatabaseCommand : IDisposable {
+        IDatabaseConnection Connection { get; }
+
+        string CommandString { get; }
+        int CommandTimeout { get; set; }
+
+        IDatabaseParameter AddParameter(string name, object value);
+        IDatabaseParameter AddParameter(string name, DatabaseType type);
+        IDatabaseParameter AddParameter(IDatabaseParameter param);
+        void AddParameters(IDatabaseParameter[] @params);
+        void ClearParameters();
+        void Prepare();
+
+        int Execute();
+        IDatabaseReader ExecuteReader();
+        object ExecuteScalar();
+    }
+}

SharpChat.Common/Database/IDatabaseConnection.cs

@@ -0,0 +1,7 @@
+using System;
+
+namespace SharpChat.Database {
+    public interface IDatabaseConnection : IDisposable {
+        IDatabaseCommand CreateCommand(object query);
+    }
+}

SharpChat.Common/Database/IDatabaseParameter.cs

@@ -0,0 +1,6 @@
+namespace SharpChat.Database {
+    public interface IDatabaseParameter {
+        string Name { get; }
+        object Value { get; set; }
+    }
+}

SharpChat.Common/Database/IDatabaseReader.cs

@@ -0,0 +1,37 @@
+using System;
+
+namespace SharpChat.Database {
+    public interface IDatabaseReader : IDisposable {
+        bool Next();
+
+        object GetValue(int ordinal);
+        object GetValue(string name);
+
+        bool IsNull(int ordinal);
+        bool IsNull(string name);
+
+        string GetName(int ordinal);
+        int GetOrdinal(string name);
+
+        string ReadString(int ordinal);
+        string ReadString(string name);
+
+        byte ReadU8(int ordinal);
+        byte ReadU8(string name);
+
+        short ReadI16(int ordinal);
+        short ReadI16(string name);
+
+        int ReadI32(int ordinal);
+        int ReadI32(string name);
+
+        long ReadI64(int ordinal);
+        long ReadI64(string name);
+
+        float ReadF32(int ordinal);
+        float ReadF32(string name);
+
+        double ReadF64(int ordinal);
+        double ReadF64(string name);
+    }
+}

SharpChat.Common/Database/Null/NullDatabaseBackend.cs

@@ -0,0 +1,63 @@
+using SharpChat.Configuration;
+using System.Collections.Generic;
+
+namespace SharpChat.Database.Null {
+    [DatabaseBackend(@"null")]
+    public class NullDatabaseBackend : IDatabaseBackend {
+        public NullDatabaseBackend(IConfig _ = null) { }
+
+        public IDatabaseConnection CreateConnection()
+            => new NullDatabaseConnection();
+
+        public IDatabaseParameter CreateParameter(string name, object value)
+            => new NullDatabaseParameter();
+
+        public IDatabaseParameter CreateParameter(string name, DatabaseType type)
+            => new NullDatabaseParameter();
+
+        public string TimestampType
+            => string.Empty;
+        public string TextType
+            => string.Empty;
+        public string BlobType
+            => string.Empty;
+
+        public string VarCharType(int size)
+            => string.Empty;
+        public string VarBinaryType(int size)
+            => string.Empty;
+        public string BigIntType(int length)
+            => string.Empty;
+        public string BigUIntType(int length)
+            => string.Empty;
+        public string IntType(int length)
+            => string.Empty;
+        public string UIntType(int length)
+            => string.Empty;
+        public string TinyIntType(int length)
+            => string.Empty;
+        public string TinyUIntType(int length)
+            => string.Empty;
+
+        public string FromUnixTime(string param)
+            => string.Empty;
+        public string ToUnixTime(string param)
+            => string.Empty;
+        public string DateTimeNow()
+            => string.Empty;
+
+        public string Concat(params string[] args)
+            => string.Empty;
+        public string ToLower(string param)
+            => string.Empty;
+
+        public bool SupportsJson => false;
+        public string JsonValue(string field, string path)
+            => string.Empty;
+
+        public bool SupportsAlterTableCollate => true;
+
+        public string AsciiCollation => string.Empty;
+        public string UnicodeCollation => string.Empty;
+    }
+}

SharpChat.Common/Database/Null/NullDatabaseCommand.cs

@@ -0,0 +1,47 @@
+using System;
+
+namespace SharpChat.Database.Null {
+    public class NullDatabaseCommand : IDatabaseCommand {
+        public IDatabaseConnection Connection { get; }
+
+        public string CommandString => string.Empty;
+        public int CommandTimeout { get => -1; set { } }
+
+        public NullDatabaseCommand(NullDatabaseConnection conn) {
+            Connection = conn ?? throw new ArgumentNullException(nameof(conn));
+        }
+
+        public IDatabaseParameter AddParameter(string name, object value)
+            => new NullDatabaseParameter();
+
+        public IDatabaseParameter AddParameter(string name, DatabaseType type)
+            => new NullDatabaseParameter();
+
+        public IDatabaseParameter AddParameter(IDatabaseParameter param) {
+            if(param is not NullDatabaseParameter)
+                throw new InvalidParameterClassTypeException();
+            return param;
+        }
+
+        public void AddParameters(IDatabaseParameter[] @params) {}
+        public void ClearParameters() {}
+
+        public void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+
+        public int Execute() {
+            return 0;
+        }
+
+        public IDatabaseReader ExecuteReader() {
+            return new NullDatabaseReader();
+        }
+
+        public object ExecuteScalar() {
+            return null;
+        }
+
+        public void Prepare() {}
+    }
+}

SharpChat.Common/Database/Null/NullDatabaseConnection.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace SharpChat.Database.Null {
+    public class NullDatabaseConnection : IDatabaseConnection {
+        public IDatabaseCommand CreateCommand(object query) {
+            return new NullDatabaseCommand(this);
+        }
+
+        public void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+    }
+}

SharpChat.Common/Database/Null/NullDatabaseParameter.cs

@@ -0,0 +1,6 @@
+namespace SharpChat.Database.Null {
+    public class NullDatabaseParameter : IDatabaseParameter {
+        public string Name => string.Empty;
+        public object Value { get => null; set { } }
+    }
+}

SharpChat.Common/Database/Null/NullDatabaseReader.cs

@@ -0,0 +1,92 @@
+using System;
+
+namespace SharpChat.Database.Null {
+    public class NullDatabaseReader : IDatabaseReader {
+        public void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+
+        public string GetName(int ordinal) {
+            return string.Empty;
+        }
+
+        public int GetOrdinal(string name) {
+            return 0;
+        }
+
+        public object GetValue(int ordinal) {
+            return null;
+        }
+
+        public object GetValue(string name) {
+            return null;
+        }
+
+        public bool IsNull(int ordinal) {
+            return true;
+        }
+        public bool IsNull(string name) {
+            return true;
+        }
+
+        public bool Next() {
+            return false;
+        }
+
+        public float ReadF32(int ordinal) {
+            return 0f;
+        }
+
+        public float ReadF32(string name) {
+            return 0f;
+        }
+
+        public double ReadF64(int ordinal) {
+            return 0d;
+        }
+
+        public double ReadF64(string name) {
+            return 0d;
+        }
+
+        public short ReadI16(int ordinal) {
+            return 0;
+        }
+
+        public short ReadI16(string name) {
+            return 0;
+        }
+
+        public int ReadI32(int ordinal) {
+            return 0;
+        }
+
+        public int ReadI32(string name) {
+            return 0;
+        }
+
+        public long ReadI64(int ordinal) {
+            return 0;
+        }
+
+        public long ReadI64(string name) {
+            return 0;
+        }
+
+        public string ReadString(int ordinal) {
+            return string.Empty;
+        }
+
+        public string ReadString(string name) {
+            return string.Empty;
+        }
+
+        public byte ReadU8(int ordinal) {
+            return 0;
+        }
+
+        public byte ReadU8(string name) {
+            return 0;
+        }
+    }
+}

SharpChat.Common/Events/BroadcastMessageEvent.cs

@@ -0,0 +1,15 @@
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class BroadcastMessageEvent : Event {
+        public const string TYPE = @"broadcast:message";
+
+        public string Text { get; }
+
+        public BroadcastMessageEvent(ChatBot chatBot, string text) : base(chatBot) {
+            Text = text ?? throw new ArgumentNullException(nameof(text));
+        }
+    }
+}

SharpChat.Common/Events/ChannelCreateEvent.cs

@@ -0,0 +1,28 @@
+using SharpChat.Channels;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelCreateEvent : Event {
+        public const string TYPE = @"channel:create";
+
+        public string Name { get; }
+        public string Topic { get; }
+        public bool IsTemporary { get; }
+        public int MinimumRank { get; }
+        public string Password { get; }
+        public bool AutoJoin { get; }
+        public uint MaxCapacity { get; }
+        public int Order { get; }
+
+        public ChannelCreateEvent(IChannel channel) : base(channel) {
+            Name = channel.Name;
+            Topic = channel.Topic;
+            IsTemporary = channel.IsTemporary;
+            MinimumRank = channel.MinimumRank;
+            Password = channel.Password;
+            AutoJoin = channel.AutoJoin;
+            MaxCapacity = channel.MaxCapacity;
+            Order = channel.Order;
+        }
+    }
+}

SharpChat.Common/Events/ChannelDeleteEvent.cs

@@ -0,0 +1,13 @@
+using SharpChat.Channels;
+using SharpChat.Users;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelDeleteEvent : Event {
+        public const string TYPE = @"channel:delete";
+
+        public ChannelDeleteEvent(IChannel channel) : base(channel) { }
+
+        public ChannelDeleteEvent(IUser user, IChannel channel) : base(user, channel) { }
+    }
+}

SharpChat.Common/Events/ChannelSessionJoinEvent.cs

@@ -0,0 +1,11 @@
+using SharpChat.Channels;
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelSessionJoinEvent : Event {
+        public const string TYPE = @"channel:session:join";
+
+        public ChannelSessionJoinEvent(IChannel channel, ISession session) : base(channel, session) { }
+    }
+}

SharpChat.Common/Events/ChannelSessionLeaveEvent.cs

@@ -0,0 +1,11 @@
+using SharpChat.Channels;
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelSessionLeaveEvent : Event {
+        public const string TYPE = @"channel:session:leave";
+
+        public ChannelSessionLeaveEvent(IChannel channel, ISession session) : base(channel, session) { }
+    }
+}

SharpChat.Common/Events/ChannelUpdateEvent.cs

@@ -0,0 +1,47 @@
+using SharpChat.Channels;
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelUpdateEvent : Event {
+        public const string TYPE = @"channel:update";
+
+        public string PreviousName { get; }
+        public string Name { get; }
+        public string Topic { get; }
+        public bool? IsTemporary { get; }
+        public int? MinimumRank { get; }
+        public string Password { get; }
+        public bool? AutoJoin { get; }
+        public uint? MaxCapacity { get; }
+        public int? Order { get; }
+
+        public bool HasName => Name != null;
+        public bool HasTopic => Topic != null;
+        public bool HasPassword => Password != null;
+
+        public ChannelUpdateEvent(
+            IChannel channel,
+            IUser owner,
+            string name,
+            string topic,
+            bool? temp,
+            int? minRank,
+            string password,
+            bool? autoJoin,
+            uint? maxCapacity,
+            int? order
+        ) : base(owner, channel ?? throw new ArgumentNullException(nameof(channel))) {
+            PreviousName = channel.Name;
+            Name = name;
+            Topic = topic;
+            IsTemporary = temp;
+            MinimumRank = minRank;
+            Password = password;
+            AutoJoin = autoJoin;
+            MaxCapacity = maxCapacity;
+            Order = order;
+        }
+    }
+}

SharpChat.Common/Events/ChannelUserJoinEvent.cs

@@ -0,0 +1,14 @@
+using SharpChat.Channels;
+using SharpChat.Sessions;
+using SharpChat.Users;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelUserJoinEvent : Event {
+        public const string TYPE = @"channel:user:join";
+
+        public ChannelUserJoinEvent(IUser user, IChannel channel) : base(user, channel) { }
+
+        public ChannelUserJoinEvent(IChannel channel, ISession session) : base(channel, session) { }
+    }
+}

SharpChat.Common/Events/ChannelUserLeaveEvent.cs

@@ -0,0 +1,17 @@
+using SharpChat.Channels;
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class ChannelUserLeaveEvent : Event {
+        public const string TYPE = @"channel:user:leave";
+
+        public UserDisconnectReason Reason { get; }
+
+        public ChannelUserLeaveEvent(IUser user, IChannel channel, UserDisconnectReason reason)
+            : base(user, channel) {
+            Reason = reason;
+        }
+    }
+}

SharpChat.Common/Events/Event.cs

@@ -0,0 +1,83 @@
+using SharpChat.Channels;
+using SharpChat.Protocol;
+using SharpChat.Sessions;
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    public abstract class Event : IEvent {
+        public long EventId { get; }
+        public DateTimeOffset DateTime { get; }
+        public long UserId { get; }
+        public string ChannelId { get; }
+        public string SessionId { get; }
+        public string ConnectionId { get; }
+
+        public Event(
+            long eventId,
+            DateTimeOffset dateTime,
+            long userId,
+            string channelId,
+            string sessionId,
+            string connectionId
+        ) {
+            EventId = eventId;
+            DateTime = dateTime;
+            UserId = userId;
+            ChannelId = channelId ?? string.Empty;
+            SessionId = sessionId ?? string.Empty;
+            ConnectionId = connectionId ?? string.Empty;
+        }
+
+        public Event(DateTimeOffset dateTime, long userId, string channelId, string sessionId, string connectionId)
+            : this(SharpId.Next(), dateTime, userId, channelId, sessionId, connectionId) { }
+
+        public Event(long userId, string channelId, string sessionId, string connectionId)
+            : this(DateTimeOffset.Now, userId, channelId, sessionId, connectionId) { }
+
+        public Event(string channelName, string sessionId, string connectionId)
+            : this(-1L, channelName, sessionId, connectionId) { }
+
+        public Event(IUser user, IChannel channel, ISession session, IConnection connection)
+            : this(user?.UserId ?? -1L, channel?.ChannelId, session?.SessionId, connection?.ConnectionId) { }
+
+        public Event(IUser user, ISession session, IConnection connection)
+            : this(user, null, session, connection) { }
+
+        public Event(IUser user, IChannel channel, ISession session)
+            : this(user, channel, session, session?.Connection) { }
+
+        public Event(IUser user, IChannel channel)
+            : this(user, channel, null, null) { }
+
+        public Event(long userId, IChannel channel)
+            : this(userId, channel.ChannelId, null, null) { }
+
+        public Event(IChannel channel, ISession session)
+            : this(session?.User, channel, session, session?.Connection) { }
+
+        public Event(ISession session, IConnection connection)
+            : this(session?.User, null, session, connection) { }
+
+        public Event(IUser user)
+            : this(user, null, null, null) { }
+
+        public Event(long userId)
+            : this(userId, null, null, null) { }
+
+        public Event(IChannel channel)
+            : this(null, channel, null, null) { }
+
+        public Event(ISession session)
+            : this(session?.User, null, session, session?.Connection) { }
+
+        public Event(IConnection connection)
+            : this(connection?.Session?.User, null, connection?.Session, connection) { }
+
+        public Event()
+            : this(-1L, null, null, null) { }
+
+        public override string ToString()
+            => $@"[{EventId}:{GetType().Name}] U:{UserId} Ch:{ChannelId} S:{SessionId} Co:{ConnectionId}";
+    }
+}

SharpChat.Common/Events/EventAttribute.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace SharpChat.Events {
+    [AttributeUsage(AttributeTargets.Class)]
+    public class EventAttribute : Attribute {
+        public string Type { get; }
+
+        public EventAttribute(string type) {
+            Type = type ?? throw new ArgumentNullException(nameof(type));
+        }
+    }
+}

SharpChat.Common/Events/EventDispatcher.cs

@@ -0,0 +1,103 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Threading;
+
+namespace SharpChat.Events {
+    public class EventDispatcher : IEventDispatcher {
+        private Queue<(object sender, IEvent evt)> EventQueue { get; } = new();
+        private object SyncQueue { get; } = new();
+
+        private HashSet<IEventHandler> EventHandlers { get; } = new();
+        private object SyncHandlers { get; } = new();
+
+        private HashSet<IEventHandler> PreventDelete { get; } = new();
+        private object SyncPrevent { get; } = new();
+
+        private bool IsRunning = false;
+        private bool RunUntilEmpty = false;
+        private Thread ProcessThread = null;
+
+        [Conditional(@"DEBUG")]
+        private static void WithDebugColour(string str, ConsoleColor colour) {
+            ConsoleColor prev = Console.ForegroundColor;
+            Console.ForegroundColor = colour;
+            Logger.Debug(str);
+            Console.ForegroundColor = prev;
+        }
+
+        public void DispatchEvent(object sender, IEvent evt) {
+            lock(SyncQueue) {
+                WithDebugColour($@"+ {evt} <- {sender}.", ConsoleColor.Red);
+                EventQueue.Enqueue((sender, evt));
+            }
+        }
+
+        public void AddEventHandler(IEventHandler handler) {
+            if(handler == null)
+                throw new ArgumentNullException(nameof(handler));
+            lock(SyncHandlers)
+                EventHandlers.Add(handler);
+        }
+
+        internal void ProtectEventHandler(IEventHandler handler) {
+            lock(SyncPrevent)
+                PreventDelete.Add(handler);
+        }
+
+        public void RemoveEventHandler(IEventHandler handler) {
+            if(handler == null)
+                throw new ArgumentNullException(nameof(handler));
+            // prevent asshattery
+            lock(SyncPrevent)
+                if(PreventDelete.Contains(handler))
+                    return;
+            lock(SyncHandlers)
+                EventHandlers.Remove(handler);
+        }
+
+        public bool ProcessNextQueue() {
+            (object sender, IEvent evt) queued;
+
+            lock(SyncQueue) {
+                if(!EventQueue.TryDequeue(out queued))
+                    return false;
+                WithDebugColour($@"~ {queued.evt} <- {queued.sender}.", ConsoleColor.Green);
+            }
+
+            lock(SyncHandlers)
+                foreach(IEventHandler handler in EventHandlers)
+                    handler.HandleEvent(queued.sender, queued.evt);
+
+            return true;
+        }
+
+        public void StartProcessing() {
+            if(IsRunning)
+                return;
+            IsRunning = true;
+
+            ProcessThread = new Thread(() => {
+                bool hadEvent;
+                do {
+                    hadEvent = ProcessNextQueue();
+                    if(RunUntilEmpty && !hadEvent)
+                        StopProcessing();
+                    else
+                        Thread.Sleep(1);
+                } while(IsRunning);
+            });
+            ProcessThread.Start();
+        }
+
+        public void FinishProcessing() {
+            RunUntilEmpty = true;
+            ProcessThread.Join();
+        }
+
+        public void StopProcessing() {
+            IsRunning = false;
+            RunUntilEmpty = false;
+        }
+    }
+}

SharpChat.Common/Events/IEvent.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace SharpChat.Events {
+    public interface IEvent {
+        long EventId { get; }
+        DateTimeOffset DateTime { get; }
+        long UserId { get; }
+        string ChannelId { get; }
+        string SessionId { get; }
+        string ConnectionId { get; }
+    }
+}

SharpChat.Common/Events/IEventDispatcher.cs

@@ -0,0 +1,7 @@
+namespace SharpChat.Events {
+    public interface IEventDispatcher {
+        void AddEventHandler(IEventHandler handler);
+        void RemoveEventHandler(IEventHandler handler);
+        void DispatchEvent(object sender, IEvent evt);
+    }
+}

SharpChat.Common/Events/IEventExtensions.cs

@@ -0,0 +1,6 @@
+namespace SharpChat.Events {
+    public static class IEventExtensions {
+        public static bool IsBroadcast(this IEvent evt)
+            => evt.ChannelId == null;
+    }
+}

SharpChat.Common/Events/IEventHandler.cs

@@ -0,0 +1,5 @@
+namespace SharpChat.Events {
+    public interface IEventHandler {
+        void HandleEvent(object sender, IEvent evt);
+    }
+}

SharpChat.Common/Events/IPBanRemovedEvent.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Net;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class IPBanRemovedEvent : Event {
+        public const string TYPE = @"ban:remove:ip";
+
+        public IPAddress IPAddress { get; }
+
+        public IPBanRemovedEvent(IPAddress ipAddress) : base() {
+            IPAddress = ipAddress ?? throw new ArgumentNullException(nameof(ipAddress));
+        }
+    }
+}

SharpChat.Common/Events/MessageCreateEvent.cs

@@ -0,0 +1,34 @@
+using SharpChat.Messages;
+using SharpChat.Sessions;
+using SharpChat.Users;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class MessageCreateEvent : Event {
+        public const string TYPE = @"message:create";
+
+        public long MessageId { get; }
+        public string Text { get; }
+        public bool IsAction { get; }
+
+        public string UserName { get; }
+        public Colour UserColour { get; }
+        public int UserRank { get; }
+        public string UserNickName { get; }
+        public UserPermissions UserPermissions { get; }
+
+        public MessageCreateEvent(ISession session, IMessage message)
+            : base(message.Channel, session) {
+            MessageId = message.MessageId;
+            Text = message.Text;
+            IsAction = message.IsAction;
+            UserName = message.Sender.UserName;
+            UserColour = message.Sender.Colour;
+            UserRank = message.Sender.Rank;
+            UserNickName = message.Sender is ILocalUser localUser && !string.IsNullOrWhiteSpace(localUser.NickName)
+                ? localUser.NickName
+                : null;
+            UserPermissions = message.Sender.Permissions;
+        }
+    }
+}

SharpChat.Common/Events/MessageDeleteEvent.cs

@@ -0,0 +1,21 @@
+using SharpChat.Messages;
+using SharpChat.Users;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class MessageDeleteEvent : Event {
+        public const string TYPE = @"message:delete";
+
+        public long MessageId { get; }
+
+        public MessageDeleteEvent(IUser actor, IMessage message)
+            : base(actor, message.Channel) {
+            MessageId = message.MessageId;
+        }
+
+        public MessageDeleteEvent(MessageUpdateEvent mue)
+            : base(mue.UserId, mue.ChannelId, null, null) {
+            MessageId = mue.MessageId;
+        }
+    }
+}

SharpChat.Common/Events/MessageUpdateEvent.cs

@@ -0,0 +1,22 @@
+using SharpChat.Messages;
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class MessageUpdateEvent : Event {
+        public const string TYPE = @"message:update";
+
+        public long MessageId { get; }
+        public string Text { get; }
+
+        public bool HasText
+            => !string.IsNullOrEmpty(Text);
+
+        public MessageUpdateEvent(IMessage message, IUser editor, string text)
+            : base(editor, message.Channel) {
+            MessageId = message.MessageId;
+            Text = text ?? throw new ArgumentNullException(nameof(text));
+        }
+    }
+}

SharpChat.Common/Events/SessionChannelSwitchEvent.cs

@@ -0,0 +1,12 @@
+using SharpChat.Channels;
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionChannelSwitchEvent : Event {
+        public const string TYPE = @"session:channel:switch";
+
+        public SessionChannelSwitchEvent(IChannel channel, ISession session)
+            : base(channel, session) { }
+    }
+}

SharpChat.Common/Events/SessionCreatedEvent.cs

@@ -0,0 +1,24 @@
+using SharpChat.Sessions;
+using System;
+using System.Net;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionCreatedEvent : Event {
+        public const string TYPE = @"session:create";
+
+        public string ServerId { get; }
+        public DateTimeOffset LastPing { get; }
+        public bool IsSecure { get; }
+        public bool IsConnected { get; }
+        public IPAddress RemoteAddress { get; }
+
+        public SessionCreatedEvent(ISession session) : base(session) {
+            ServerId = session.ServerId;
+            LastPing = session.LastPing;
+            IsSecure = session.IsSecure;
+            IsConnected = session.IsConnected;
+            RemoteAddress = session.RemoteAddress;
+        }
+    }
+}

SharpChat.Common/Events/SessionDestroyEvent.cs

@@ -0,0 +1,11 @@
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionDestroyEvent : Event {
+        public const string TYPE = @"session:destroy";
+
+        public SessionDestroyEvent(ISession session)
+            : base(session) {}
+    }
+}

SharpChat.Common/Events/SessionPingEvent.cs

@@ -0,0 +1,11 @@
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionPingEvent : Event {
+        public const string TYPE = @"session:ping";
+
+        public SessionPingEvent(ISession session)
+            : base(session) { }
+    }
+}

SharpChat.Common/Events/SessionResumeEvent.cs

@@ -0,0 +1,29 @@
+using SharpChat.Protocol;
+using SharpChat.Sessions;
+using System;
+using System.Net;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionResumeEvent : Event {
+        public const string TYPE = @"session:resume";
+
+        public string ServerId { get; }
+        public IPAddress RemoteAddress { get; }
+
+        public bool HasConnection
+            => ConnectionId != null;
+
+        public SessionResumeEvent(ISession session, string serverId, IPAddress remoteAddress)
+            : base(session) {
+            ServerId = serverId ?? throw new ArgumentNullException(nameof(serverId));
+            RemoteAddress = remoteAddress ?? throw new ArgumentNullException(nameof(remoteAddress));
+        }
+
+        public SessionResumeEvent(ISession session, IConnection connection, string serverId)
+            : base(session, connection) {
+            ServerId = serverId ?? throw new ArgumentNullException(nameof(serverId));
+            RemoteAddress = connection?.RemoteAddress ?? throw new ArgumentNullException(nameof(connection));
+        }
+    }
+}

SharpChat.Common/Events/SessionSuspendEvent.cs

@@ -0,0 +1,11 @@
+using SharpChat.Sessions;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class SessionSuspendEvent : Event {
+        public const string TYPE = @"session:suspend";
+
+        public SessionSuspendEvent(ISession session)
+            : base(session) { }
+    }
+}

SharpChat.Common/Events/UserBanCreatedEvent.cs

@@ -0,0 +1,29 @@
+using SharpChat.Users.Remote;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class UserBanCreatedEvent : Event {
+        public const string TYPE = @"ban:create";
+
+        public long ModeratorUserId { get; }
+        public bool IsPermanent { get; }
+        public long Duration { get; }
+        public string Reason { get; }
+
+        public UserBanCreatedEvent(
+            IRemoteUser subject,
+            IRemoteUser moderator,
+            bool permanent,
+            TimeSpan duration,
+            string reason
+        ) : base(
+            (subject ?? throw new ArgumentNullException(nameof(subject))).UserId
+        ) {
+            ModeratorUserId = moderator?.UserId ?? -1;
+            IsPermanent = permanent;
+            Duration = (long)duration.TotalSeconds;
+            Reason = reason ?? throw new ArgumentNullException(nameof(reason));
+        }
+    }
+}

SharpChat.Common/Events/UserBanRemovedEvent.cs

@@ -0,0 +1,14 @@
+using SharpChat.Users.Remote;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class UserBanRemovedEvent : Event {
+        public const string TYPE = @"ban:remove:user";
+
+        public UserBanRemovedEvent(IRemoteUser remoteUser)
+            : base(
+                (remoteUser ?? throw new ArgumentNullException(nameof(remoteUser))).UserId
+            ) { }
+    }
+}

SharpChat.Common/Events/UserConnectEvent.cs

@@ -0,0 +1,28 @@
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class UserConnectEvent : Event {
+        public const string TYPE = @"user:connect";
+
+        public string Name { get; }
+        public Colour Colour { get; }
+        public int Rank { get; }
+        public UserPermissions Permissions { get; }
+        public string NickName { get; }
+        public UserStatus Status { get; }
+        public string StatusMessage { get; }
+
+        public UserConnectEvent(ILocalUser user)
+            : base(user ?? throw new ArgumentNullException(nameof(user))) {
+            Name = user.UserName;
+            Colour = user.Colour;
+            Rank = user.Rank;
+            Permissions = user.Permissions;
+            NickName = string.IsNullOrWhiteSpace(user.NickName) ? null : user.NickName;
+            Status = user.Status;
+            StatusMessage = user.StatusMessage;
+        }
+    }
+}

SharpChat.Common/Events/UserDisconnectEvent.cs

@@ -0,0 +1,16 @@
+using SharpChat.Users;
+using System;
+
+namespace SharpChat.Events {
+    [Event(TYPE)]
+    public class UserDisconnectEvent : Event {
+        public const string TYPE = @"user:disconnect";
+
+        public UserDisconnectReason Reason { get; }
+
+        public UserDisconnectEvent(IUser user, UserDisconnectReason reason)
+            : base(user ?? throw new ArgumentNullException(nameof(user))) {
+            Reason = reason;
+        }
+    }
+}