C # Socket communication implements chat between two consoles

1. Operation Effect

Figure 1 Starting the service side

Figure 2 Starting the client

Figure 3 Customer Message

Figure 4 Service-side messaging

Figure 5 Customer active shutdown, service segment print exception details

2. Server-side source code

Both the server and the client have to add namespace:

Using System.Net;

Using System.Net.Sockets;

Using System.Threading;

Source:

 class Program    {        private  static string serverip =  "192.168.3.42";//native IP address          private static int serverPort = 8888;         private static int bufferSize = 1024;         private static int count = 0;//= Dialog Number          static void main (String[] args)         {             IPAddress ip =  Ipaddress.parse (ServerIP);             ipendpoint  ipe = new ipendpoint (Ip, serverport);             sockEt s = new socket (addressfamily.internetwork, sockettype.stream,  PROTOCOLTYPE.TCP);            try             {                 s.bind (IPE);                 s.listen (Ten);                 console.writeline ("Waiting for Connection ...");             }             catch  (Exception ex)             {                  Console.WriteLine (ex); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&Nbsp;      }             thread maintrd = new thread (Run);             maintrd.start (s);        }         /// <summary>        ///   Start the socket for the server.         ///  here to change to a multi-user connection, a recmsg thread is new for each new user, and Dictionary<t1, T2> store every pair of Ipe and sockets         /// </summary>         /// <param name= "O" > Incoming socket Object </param>         private static void run (Object o)          {            socket  socket = o as socket;             try            {                                 socket connsocket = socket. Accept ();                 // Client and server connection succeeded.                  Console.WriteLine ("{0}" successfully connected to this machine. ",  connsocket.remoteendpoint);                 //the next thing to the session thread                  thread recth = new thread (recmsg);         &Nbsp;       recth.start (Connsocket);                 thread sendth = new thread ( SENDMSG);                 Sendth.start (Connsocket);            }             catch  (Exception ex)              {                 console.writeline (ex);                 throw;             }        }         private statiC void recmsg (Object o)         {             socket connsocket = o as socket ;            while  (True)              {                 byte[] buffer = new Byte[bufferSize];                 try                 {                     int  Length = connsocket.receive (buffer);                     byte[] realbuffer = new byte[length];                     array.copy (Buffer,  0, realbuffer, 0, length);                     string str =  System.Text.Encoding.Default.GetString (Realbuffer);                     console.write ("[{0}] ",  count++);                      console.writeline ("{0} said: {1}.",  connsocket.remoteendpoint, str);                 }                 catch  (Exception ex)                  {                     console.writeline (ex);                     console.readkey ();                      break;                }                                           }        }         private static&Nbsp;void sendmsg (Object o)          {             socket connsocket = o as socket ;            while  (True)              {                 string str = console.readline ();                 if  (str != string . Empty)                 {                      byte[] buffer = encoding.default.getbytes (str);                     connsocket.send (Buffer, buffer. Length, socketflags.none);                 }                            }         }    }

3. Client source Code

Class program    {        private static  string host =  "192.168.3.42";         private  static int port = 8888;        private  static int buffersize = 1024;        static  Ipaddress ip = ipaddress.parse (host);         static  ipendpoint ipe = new ipendpoint (Ip, port);         private static int count = 0;//= Dialog Number          static void main (String[] args)         {                        &nBsp; socket s = new socket (addressfamily.internetwork, sockettype.stream,  PROTOCOLTYPE.TCP);            try             {                 s.connect (IPE);                 console.writeline ("successfully connected to {0}.") ",  s.remoteendpoint);                 console.writeline ("Please enter the message you want to send to the server, press ENTER.) ");            }             catch  (Exception ex)              {            & NBsP;   debug.writeline (ex);                 throw;            }             thread clientth = new  thread (Sendtoserver);             Clientth.start (s);             thread recth  = new thread (recmsg);             Recth.start (s);                     }        private static void  recmsg (Object o)         {             socket connsocket = o as socket;             while  (True)             {                 byte[]  buffer = new byte[buffersize];                 try                 {                     int length = connsocket.receive (buffer);                      byte[] realbuffer = new byte[length];              &nbSp;      array.copy (buffer, 0, realbuffer, 0, length);                      string str = system.text.encoding.default.getstring (Realbuffer);                     console.write ( "[{0}] ",  count++);                     console.writeline ("{0}" said: {1}. ", connsocket.remoteendpoint,  STR);                }                 catch  ( EXCEPTION EX)                  {                     Console.WriteLine (ex);                     console.readkey ();                     break;                 }             }        }         private static void sendtoserver (Object o)          {                         Socket socket = o as Socket;       &nbsP;                 while   (True)             {                 try                 {                     string str =  Console.ReadLine ();                                          if  (str != string. Empty)                      {       &Nbsp;                byte[]  bt = encoding.default.getbytes (str);                         socket. Send (BT, BT. length, 0);                     }                 }                 catch  (Exception ex)                  {                     console.writeline ("Send failed. ");            &nbSp;        debug.writeline (ex);                     throw;                 }             }                              }     }

C # Socket communication implements chat between two consoles