private void ProcessSend(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
// done echoing data back to the client
AsyncUserToken token = (AsyncUserToken)e.UserToken;
// read the next block of data send from the client
bool willRaiseEvent = token.Socket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);
}
}
else
{
CloseClientSocket(e);
}
}
public void SendMessage(SimpleSocketData data)
{
SocketAsyncEventArgs eventArgs = data.SimpleSocketEventArgs;
string message = data.Message;
if (null != message && message.Trim() != "")
{
// send the message
byte[] buffer = Encoding.ASCII.GetBytes(message);
eventArgs.SetBuffer(buffer, 0, message.Length);
AsyncUserToken token = eventArgs.UserToken as AsyncUserToken;
bool willRaiseEvent = token.Socket.SendAsync(eventArgs);
if (!willRaiseEvent)
{
ProcessSend(eventArgs);
}
}
}
private void ProcessReceive(SocketAsyncEventArgs e)
{
AsyncUserToken token = (AsyncUserToken)e.UserToken;
// check if the remote host closed the connection
if (e.BytesTransferred > 0 && e.SocketError == SocketError.Success)
{
// Do data processing here
string message = Encoding.ASCII.GetString(e.Buffer, e.Offset, e.BytesTransferred);
OnReceive(e);
// token.Socket.SendAsync(e);
// start receiving again
// token.Socket.ReceiveAsync(e);
}
else
{
// close client socket
CloseClientSocket(e);
}
}
/// <summary>
/// Close Socket connection with one of the connected Client socket
/// </summary>
/// <param name="e">SocketAsyncEvnetArgs object which have the socket of the client that
/// we want to close connection</param>
public void CloseClientSocket(SocketAsyncEventArgs e)
{
AsyncUserToken token = e.UserToken as AsyncUserToken;
// close the socket associate with the client
try
{
token.Socket.Shutdown(SocketShutdown.Send);
}
catch (Exception) { }
// Decrease the number of connected socket client
Interlocked.Decrement(ref numberOfConnectedSockets);
maxNumberOfConnectedSocket.Release();
// Free the SocketAsyncEventArg so they can be reused by another client
readWritePool.Push(e);
OnClientDisconnected();
// Cant seem to find socket close so chekcing if shutdown close the socket connection or not
// PrintIfSocketIsClosedOrNot(token.Socket);
}