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POStop a Asyncronous TCP Application Properly
 

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    <p>Hi i have a disconnect button click event in my SERVER application as follows.Before it dc, it will alert other clients by sending a "/exit" command.After that it will shutdown its connection.</p> <pre><code> private void stopButton_Click(object sender, EventArgs e) { byte[] exit_command = Encoding.ASCII.GetBytes("/exit"); g_server_conn.BeginSend(exit_command, 0, exit_command.Length, SocketFlags.None, new AsyncCallback(Send), g_server_conn); g_server_conn.Shutdown(SocketShutdown.Both); g_server_conn.Close(); } </code></pre> <p>The problem is that the server is executing Socket.BeginRecieve() method all the time. How do we tell the begin recieve method to stop its operation so that i can close properly.</p> <p>private void Accept(IAsyncResult iar) {</p> <pre><code> Socket winsock = (Socket)iar.AsyncState; g_server_conn = winsock.EndAccept(iar); //Function that exchanges names of each other NewClient(g_server_conn); Socket server_conn = g_server_conn; chat_msg = new byte[1024]; server_conn.BeginReceive(chat_msg, 0, chat_msg.Length, SocketFlags.None, new AsyncCallback(Recieve), server_conn); } private void Recieve(IAsyncResult iar) { Socket server_conn = (Socket)iar.AsyncState; server_conn.EndReceive(iar); //If clients shutdown connection,Server recieves /exit command if (Encoding.ASCII.GetString(chat_msg, 0, chat_msg.Length) == "/exit") { g_server_conn.Shutdown(SocketShutdown.Both); g_server_conn.Close(); return; } SetLabel(client_name, chatListBox); SetLabel(Encoding.ASCII.GetString(chat_msg), chatListBox); chat_msg = new byte[1024]; server_conn.BeginReceive(chat_msg, 0, chat_msg.Length, SocketFlags.None, new AsyncCallback(Recieve), server_conn); } </code></pre>
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