Created
September 22, 2011 04:03
-
-
Save msbukkuri/1234006 to your computer and use it in GitHub Desktop.
Hello World Socket
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| using System; | |
| using System.Net; | |
| using System.Net.Sockets; | |
| using System.Text; | |
| using System.Threading; | |
| namespace SocketConnection | |
| { | |
| public class Program | |
| { | |
| public static int Main(String[] args) | |
| { | |
| AsynchronousClient.StartClient(); | |
| return 0; | |
| } | |
| } | |
| // State object for receiving data from remote device. | |
| public class StateObject | |
| { | |
| // Client socket. | |
| public Socket workSocket = null; | |
| // Size of receive buffer. | |
| public const int BufferSize = 256; | |
| // Receive buffer. | |
| public byte[] buffer = new byte[BufferSize]; | |
| // Received data string. | |
| public StringBuilder sb = new StringBuilder(); | |
| } | |
| public class AsynchronousClient | |
| { | |
| // The port number for the remote device. | |
| private const int port = 8181; | |
| // ManualResetEvent instances signal completion. | |
| private static ManualResetEvent connectDone = | |
| new ManualResetEvent(false); | |
| private static ManualResetEvent sendDone = | |
| new ManualResetEvent(false); | |
| private static ManualResetEvent receiveDone = | |
| new ManualResetEvent(false); | |
| // The response from the remote device. | |
| private static String response = String.Empty; | |
| public static void StartClient() | |
| { | |
| // Connect to a remote device. | |
| try | |
| { | |
| // Establish the remote endpoint for the socket. | |
| // The name of the | |
| // remote device is "host.contoso.com". | |
| IPHostEntry ipHostInfo = Dns.GetHostEntry("localhost"); | |
| IPAddress ipAddress = ipHostInfo.AddressList[1]; | |
| IPEndPoint remoteEP = new IPEndPoint(ipAddress, port); | |
| // Create a TCP/IP socket. | |
| Socket client = new Socket(AddressFamily.InterNetwork, | |
| SocketType.Stream, ProtocolType.Tcp); | |
| // Connect to the remote endpoint. | |
| client.BeginConnect(remoteEP, | |
| new AsyncCallback(ConnectCallback), client); | |
| connectDone.WaitOne(); | |
| // Send test data to the remote device. | |
| Send(client, "This is a test<EOF>"); | |
| sendDone.WaitOne(); | |
| // Receive the response from the remote device. | |
| Receive(client); | |
| receiveDone.WaitOne(); | |
| // Write the response to the console. | |
| Console.WriteLine("Response received : {0}", response); | |
| // Release the socket. | |
| client.Shutdown(SocketShutdown.Both); | |
| client.Close(); | |
| } | |
| catch (Exception e) | |
| { | |
| Console.WriteLine(e.ToString()); | |
| } | |
| } | |
| private static void ConnectCallback(IAsyncResult ar) | |
| { | |
| try | |
| { | |
| // Retrieve the socket from the state object. | |
| Socket client = (Socket)ar.AsyncState; | |
| // Complete the connection. | |
| client.EndConnect(ar); | |
| Console.WriteLine("Socket connected to {0}", | |
| client.RemoteEndPoint.ToString()); | |
| // Signal that the connection has been made. | |
| connectDone.Set(); | |
| } | |
| catch (Exception e) | |
| { | |
| Console.WriteLine(e.ToString()); | |
| } | |
| } | |
| private static void Receive(Socket client) | |
| { | |
| try | |
| { | |
| // Create the state object. | |
| StateObject state = new StateObject(); | |
| state.workSocket = client; | |
| // Begin receiving the data from the remote device. | |
| client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, | |
| new AsyncCallback(ReceiveCallback), state); | |
| } | |
| catch (Exception e) | |
| { | |
| Console.WriteLine(e.ToString()); | |
| } | |
| } | |
| private static void ReceiveCallback(IAsyncResult ar) | |
| { | |
| try | |
| { | |
| // Retrieve the state object and the client socket | |
| // from the asynchronous state object. | |
| StateObject state = (StateObject)ar.AsyncState; | |
| Socket client = state.workSocket; | |
| // Read data from the remote device. | |
| int bytesRead = client.EndReceive(ar); | |
| if (bytesRead > 0) | |
| { | |
| // There might be more data, so store the data received so far. | |
| state.sb.Append(Encoding.ASCII.GetString(state.buffer, 0, bytesRead)); | |
| // Get the rest of the data. | |
| client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, | |
| new AsyncCallback(ReceiveCallback), state); | |
| } | |
| else | |
| { | |
| // All the data has arrived; put it in response. | |
| if (state.sb.Length > 1) | |
| { | |
| response = state.sb.ToString(); | |
| } | |
| // Signal that all bytes have been received. | |
| receiveDone.Set(); | |
| } | |
| } | |
| catch (Exception e) | |
| { | |
| Console.WriteLine(e.ToString()); | |
| } | |
| } | |
| private static void Send(Socket client, String data) | |
| { | |
| // Convert the string data to byte data using ASCII encoding. | |
| byte[] byteData = Encoding.ASCII.GetBytes(data); | |
| // Begin sending the data to the remote device. | |
| client.BeginSend(byteData, 0, byteData.Length, 0, | |
| new AsyncCallback(SendCallback), client); | |
| } | |
| private static void SendCallback(IAsyncResult ar) | |
| { | |
| try | |
| { | |
| // Retrieve the socket from the state object. | |
| Socket client = (Socket)ar.AsyncState; | |
| // Complete sending the data to the remote device. | |
| int bytesSent = client.EndSend(ar); | |
| Console.WriteLine("Sent {0} bytes to server.", bytesSent); | |
| // Signal that all bytes have been sent. | |
| sendDone.Set(); | |
| } | |
| catch (Exception e) | |
| { | |
| Console.WriteLine(e.ToString()); | |
| } | |
| } | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment