private void ReceiveCallback(IAsyncResult ar)
{
var state = (SocketState)ar.AsyncState;
int bytesRead = state.Client.EndReceive(ar);
if (bytesRead <= 0)
{
System.Console.WriteLine("Client disconnected!");
return;
}
state.Read += bytesRead;
string received = null;
Console.WriteLine($" ~ Receive callback! Bytes read: {bytesRead}, Available: {state.Client.Available}");
// var received = Encoding.UTF8.GetString(state.Buffer, 0, bytesRead);
if (this.HandShake)
{
if (WebSocketHandler.IsCancelFrame(state.Buffer, state.Read))
{
Console.WriteLine("Client disconneted!");
this.Server?.EmitDisconnected(this);
return;
}
var messages = WebSocketHandler.HandlePacket(state.Buffer, state.Read);
foreach (var message in messages)
{
this.Server?.EmitMessageReceived(this, message);
System.Console.WriteLine($"> Received data: {message}");
}
if (messages.Count > 0)
{
Console.WriteLine("Clearing state...");
state.Clear();
bytesRead = 0;
}
}
else
{
received = Encoding.UTF8.GetString(state.Buffer, 0, state.Read);
if (Regex.IsMatch(received, "^GET", RegexOptions.IgnoreCase) && received.Contains("Key"))
{
System.Console.WriteLine("> Handshake started!");
WebSocketHandler.HandleHandshake(received, this);
this.HandShake = true;
Console.WriteLine("Clearing state...");
state.Clear();
bytesRead = 0;
}
}
state.Client.BeginReceive(state.Buffer, bytesRead, SocketState.DEFAULT_BUFFER_SIZE - state.Read, SocketFlags.None, new AsyncCallback(ReceiveCallback), state);
}