private void ConnectCallback(IAsyncResult ar)
{
ConnectStateObject state = (ConnectStateObject)ar.AsyncState;
try
{
state.workSocket.EndConnect(ar);
this.IsConnected = true;
StartReceive();
}
catch (SocketException ex)
{
state.errorType = (SocketError)ex.ErrorCode;
--state.timesToTry;
if (state.timesToTry <= 0)
{
return;
}
state.workSocket.BeginConnect(state.endPoint,
new System.AsyncCallback(ConnectCallback), state);
}
finally
{
SocketConnectEvent?.Invoke(this, new SocketConnectEventArgs(state, this));
if (state.externalCallback != null)
{
state.externalCallback(this, new SocketConnectEventArgs(state, this));
}
}
}
// async Connect
public void StartConnect(IPEndPoint ep, int timesToTry, SocketConnectEventHandler externalCallback = null, object externalCallbackState = null)
{
if (this.IsConnected == true)
{
return;
}
ConnectStateObject state = new ConnectStateObject();
state.workSocket = _socket;
state.endPoint = ep;
state.timesToTry = timesToTry;
state.externalCallback = externalCallback;
state.externalCallbackState = externalCallbackState;
_socket.BeginConnect(ep,
new System.AsyncCallback(ConnectCallback), state);
}
public SocketConnectEventArgs(ConnectStateObject state, SockBase handler)
{
State = state; Handler = handler;
}