public void Send(Buffers.WebSocket.Write buffer)
{
var parsed = buffer.Parsed;
Socket.BeginSend(parsed, 0, parsed.Length, 0, beginSend, buffer);
OnSending?.Invoke();
}
private void beginSend(IAsyncResult result)
{
Buffers.WebSocket.Write buffer = (Buffers.WebSocket.Write)result.AsyncState;
Socket.EndSend(result);
if (!buffer.Type.HasFlag(Buffers.WebSocket.Write.DataType.PIN | Buffers.WebSocket.Write.DataType.PON))
{
OnSent?.Invoke();
}
}
private void beginReceive(IAsyncResult result)
{
Buffers.Read buffer = (Buffers.Read)result.AsyncState;
if (!Socket.Connected)
{
OnDisconnect?.Invoke();
return;
}
int read = Socket.EndReceive(result);
if (read == 0)
{
Socket.Disconnect(true);
OnDisconnect?.Invoke();
}
else
{
Buffers.Read next;
if (buffer.GetType() == typeof(Buffers.HTTP.Read))
{
Buffers.HTTP.Read current = buffer as Buffers.HTTP.Read;
current.Append(read);
if (read == buffer.Size)
{
Socket.BeginReceive(current.Buffer, 0, current.Size, 0, beginReceive, current);
}
else if (read < buffer.Size)
{
current.Parse();
// Upgrade to websocket on server request
if (current.HTTP_STATUS == 101 && current.Headers.Contains(new KeyValuePair <string, string>("Upgrade", "websocket")))
{
OnConnected?.Invoke();
next = new Buffers.WebSocket.Read(new byte[4096]);
}
else
{
string payload = current.Payload.Replace("\0", "").Trim();
if (!string.IsNullOrEmpty(payload))
{
OnReceive?.Invoke(payload);
}
Console.WriteLine("Unable to upgrade connection");
OnDisconnect?.Invoke();
return;
}
Socket.BeginReceive(next.Buffer, 0, next.Size, 0, beginReceive, next);
}
}
else if (buffer.GetType() == typeof(Buffers.WebSocket.Read))
{
Buffers.WebSocket.Read current = buffer as Buffers.WebSocket.Read;
current.Append(read);
if (read == buffer.Size)
{
Socket.BeginReceive(current.Buffer, 0, current.Size, 0, beginReceive, current);
}
else if (read < buffer.Size)
{
current.Parse();
if (current.Type == Buffers.WebSocket.Read.DataType.PIN) // Answer PON to PIN
{
Buffers.WebSocket.Write pong = new Buffers.WebSocket.Write(new byte[0], Buffers.WebSocket.Write.DataType.PON, false);
Socket.BeginSend(pong.Parsed, 0, pong.Parsed.Length, 0, beginSend, pong);
}
else
{
OnReceive?.Invoke(Encoding.UTF8.GetString(current.Payload));
}
next = new Buffers.WebSocket.Read(new byte[4096]);
Socket.BeginReceive(next.Buffer, 0, next.Size, 0, beginReceive, next);
}
}
}
}
