// private methods
private void connect()
{
IsConnected = false;
if (connecting)
{
return;
}
if (client != null)
{
client.Close();
client = null;
}
try
{
client = new TcpClient
{
NoDelay = true,
ReceiveBufferSize = 8192,
SendBufferSize = 8192
};
client.Connect("irc.chat.twitch.tv", 6667);
stream = client.GetStream();
var reader = new StreamReader(stream);
var messageQueue = new ConcurrentQueue <IrcMessage>();
var messageQueueAddedEvent = new AutoResetEvent(false);
new Thread(() =>
{
try
{
string line;
while ((line = reader.ReadLine()) != null)
{
#if DEBUG
System.Diagnostics.Debug.WriteLine(line);
#endif
IrcMessage msg;
if (IrcMessage.TryParse(line, out msg))
{
if (msg.Command == "PING")
{
WriteLine("PONG");
}
else if (msg.Command == "PONG")
{
receivedPong = true;
}
messageQueue.Enqueue(msg);
messageQueueAddedEvent.Set();
}
}
}
catch { }
}).Start();
new Thread(() =>
{
bool inQueue = false;
IrcMessage message;
while (true)
{
messageQueueAddedEvent.WaitOne();
while (messageQueue.TryDequeue(out message))
{
int count = messageQueue.Count;
if (messageQueue.Count > 50)
{
IrcMessage.TryParse($"@system-msg=ignored\\s{count}\\smessages USERNOTICE #{message.Middle}", out message);
IrcMessage nil;
for (int i = 0; i < count; i++)
{
messageQueue.TryDequeue(out nil);
}
MessageReceived?.Invoke(this, new MessageEventArgs(message));
}
else
{
MessageReceived?.Invoke(this, new MessageEventArgs(message));
}
}
}
}).Start();
if (!string.IsNullOrEmpty(password))
{
writeLine(stream, "PASS " + password);
}
writeLine(stream, "NICK " + username);
writeLine(stream, "CAP REQ :twitch.tv/commands");
writeLine(stream, "CAP REQ :twitch.tv/tags");
receivedPong = true;
IsConnected = true;
Connected?.Invoke(this, EventArgs.Empty);
}
catch (Exception exc)
{
ConnectionException?.Invoke(this, new ExceptionEventArgs(exc));
}
}
public static bool TryParse(string line, out IrcMessage message)
{
string tags = null, prefix = null, command = null, middle = null, @params = null;
int i = 0, end;
// tags
if (i >= line.Length)
{
goto error;
}
if (line[i] == '@')
{
i++;
end = line.IndexOf(' ', i);
if (end == -1)
{
goto error;
}
tags = line.Substring(i, end - i);
i = end + 1;
}
// prefix
if (i >= line.Length)
{
goto error;
}
if (line[i] == ':')
{
i++;
end = line.IndexOf(' ', i);
if (end == -1)
{
goto error;
}
prefix = line.Substring(i, end - i);
i = end + 1;
}
// command
if (i >= line.Length)
{
goto error;
}
end = line.IndexOf(' ', i);
if (end == -1)
{
end = line.Length;
}
if (end == i)
{
goto error;
}
command = line.Substring(i, end - i);
i = end + 1;
// params
if (i < line.Length)
{
if (line[i] != ':')
{
end = line.IndexOf(' ', i);
if (end == -1)
{
end = line.Length;
}
middle = line.Substring(i, end - i);
i = end + 1;
}
if (i < line.Length)
{
if (line[i] == ':')
{
@params = line.Substring(i + 1);
}
}
}
message = new IrcMessage(tags, prefix, command, middle, @params);
return(true);
error:
message = null;
return(false);
}
