private void BeginClientConnect(IAsyncResult ar)
{
try
{
// Retrieve the socket from the state object.
var client = (Socket)ar.AsyncState;
// Complete the connection.
client.EndConnect(ar);
// start receiving
var packet = new ConnectionsControllerformation
{
Socket = client,
Payload = new byte[DefaultPacketSize]
};
client.BeginReceive(packet.Payload, 0, DefaultPacketSize, SocketFlags.None, ReceiveCallback, packet);
OnClientConnected();
}
catch
{
// ignored
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
// Retrieve the state object and the handler socket
// from the asynchronous state object.
var packet = (ConnectionsControllerformation)ar.AsyncState;
// the client.
var client = packet.Socket;
// Read data from the socket.
var bytesRead = client.EndReceive(ar);
if (bytesRead == 0)
{
return;
}
// There might be more data, so store the data received so far.
// state.Sb.Append(Encoding.ASCII.GetString(state.Buffer, 0, bytesRead));
// we received it all.
HandleReceived(client, packet.Payload, bytesRead);
// Not all data received. Get more.
packet = new ConnectionsControllerformation
{
Socket = client,
Payload = new byte[DefaultPacketSize]
};
client.BeginReceive(packet.Payload, 0, DefaultPacketSize, 0, ReceiveCallback, packet);
}
catch (ArgumentException)
{
// seen happening when we receive something after disconnecting.
// the heartbeat will reemove the socket.
}
catch (SocketException)
{
}
catch (ObjectDisposedException)
{
// the client socket might have been disconnected.
}
}
private void BeginServerAccept(IAsyncResult ar)
{
try
{
// Get the socket that handles the client request.
// var listener = (Socket)ar.AsyncState;
// Create the state object.
var client = _socket.EndAccept(ar);
try
{
// then listen for a new connection right away.
// unless of course we are disconnected.
// in that case, don't listen for anything else.
_socket.BeginAccept(BeginServerAccept, _socket);
// register this socket
RegisterClientSocket(client);
var packet = new ConnectionsControllerformation
{
Socket = client,
Payload = new byte[DefaultPacketSize]
};
client.BeginReceive(packet.Payload, 0, DefaultPacketSize, SocketFlags.None, ReceiveCallback, packet);
}
catch
{
client.Disconnect(true);
}
}
catch
{
// ignored
}
}
