sharp-chat/SharpChat/ChatUserSession.cs

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using Fleck;
using System;
using System.Collections.Generic;
using System.Net;
namespace SharpChat {
public class ChatUserSession : IDisposable, IPacketTarget {
public const int ID_LENGTH = 32;
#if DEBUG
public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(1);
#else
public static TimeSpan SessionTimeOut { get; } = TimeSpan.FromMinutes(5);
#endif
public IWebSocketConnection Connection { get; }
public string Id { get; private set; }
public bool IsDisposed { get; private set; }
public DateTimeOffset LastPing { get; set; } = DateTimeOffset.MinValue;
public ChatUser User { get; set; }
private static int CloseCode { get; set; } = 1000;
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public string TargetName => @"@log";
private IPAddress _RemoteAddress = null;
public IPAddress RemoteAddress {
get {
if(_RemoteAddress == null) {
if((Connection.ConnectionInfo.ClientIpAddress == @"127.0.0.1" || Connection.ConnectionInfo.ClientIpAddress == @"::1")
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&& Connection.ConnectionInfo.Headers.ContainsKey(@"X-Real-IP"))
_RemoteAddress = IPAddress.Parse(Connection.ConnectionInfo.Headers[@"X-Real-IP"]);
else
_RemoteAddress = IPAddress.Parse(Connection.ConnectionInfo.ClientIpAddress);
}
return _RemoteAddress;
}
}
public ChatUserSession(IWebSocketConnection ws) {
Connection = ws;
Id = GenerateId();
}
private static string GenerateId() {
byte[] buffer = new byte[ID_LENGTH];
RNG.NextBytes(buffer);
return buffer.GetIdString();
}
public void Send(IServerPacket packet) {
if(!Connection.IsAvailable)
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return;
IEnumerable<string> data = packet.Pack();
if(data != null)
foreach(string line in data)
if(!string.IsNullOrWhiteSpace(line))
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Connection.Send(line);
}
public void BumpPing()
=> LastPing = DateTimeOffset.Now;
public bool HasTimedOut
=> DateTimeOffset.Now - LastPing > SessionTimeOut;
public void PrepareForRestart()
=> CloseCode = 1012;
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public void Dispose()
=> Dispose(true);
~ChatUserSession()
=> Dispose(false);
private void Dispose(bool disposing) {
if(IsDisposed)
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return;
IsDisposed = true;
Connection.Close(CloseCode);
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if(disposing)
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GC.SuppressFinalize(this);
}
}
}