C# TCP Server cannot response to client -

so job create server can respond , connect several client @ once, that's why create threaded server , test client check.

the client can connect server them pressing button, send message server, server put message interface respond client. lastly client receive response , put onto interface.

the problem got server can receive message server , display response server client not successful though similar. debugger seems client stuck @ read procedure.

below code server. think problem come @ connection handler , client side. stuck now, please show me did wrong @@

public class server {     tcplistener serversocket = new tcplistener(ipaddress.any, 3000);     tcpclient clientsocket = default(tcpclient);     int counter = 0;     private examplecallback callback;      public server(examplecallback callback)     {         callback = callback;     }      public void initserver()     {         serversocket.start();          //call main thread update display         if (callback != null)             callback(">> server initialized!");          console.writeline(">> server initialized!");     }      public void waitconnection()     {         int counter = 0;         while (true)         {             counter += 1;             clientsocket = serversocket.accepttcpclient();              if (callback != null)                 callback(">> client number: " + counter + " started!");              console.writeline(">> client number: " + counter + " started!");              handleclient handerler = new handleclient(new examplecallback(receivecallback), clientsocket, counter);             thread clientthread = new thread(new threadstart(handerler.startconv));             clientthread.start();         }     }      public void closeserver()     {         clientsocket.close();         serversocket.stop();     }      private void receivecallback(string message)     {         callback(message);     }   } 

the code connection handerler:

public class handleclient {     private examplecallback callback2;     tcpclient clientsocket;     int clientno;      public handleclient(examplecallback callback, tcpclient client, int clno)     {         callback2 = callback;         clientsocket = client;         clientno = clno;     }      public void startconv()     {         int requestcount = 0;          byte[] bytefrom = new byte[10025];         string xmlfromclient = null;         string datafromclient = null;          string serverresponse = null;         string serverxmlresponse = null;         networkstream serverstream = clientsocket.getstream();          requestcount = 0;         while (true)         {             try             {                 requestcount++;                  //receive requerst client                 serverstream.read(bytefrom, 0, (int)clientsocket.receivebuffersize);                 xmlfromclient = system.text.encoding.ascii.getstring(bytefrom);                 callback2("\n >> client :" + clientno + ". message: \n" + xmlfromclient);                   //console.writeline(">> client :" + clientno + ". message: \n" + xmlfromclient);                  //send acknowledgement client                 serverresponse = "server client(" + clientno + "). request time: " + requestcount;                   byte[] byteto = encoding.ascii.getbytes(serverresponse);                 serverstream.write(byteto, 0, byteto.length);                  serverstream.flush();                 console.writeline(">> " + serverresponse);             }             catch (exception ex)             {                 callback2(ex.tostring());              }         }     } } 

and lastly code client size:

public partial class form1 : form {     system.net.sockets.tcpclient clientsocket = new system.net.sockets.tcpclient();     networkstream serverstream;      public form1()     {         initializecomponent();     }      public void msg(string mesg)     {         this.display.text += environment.newline + " >> " + mesg;     }      private void sendbutton_click(object sender, eventargs e)     {         serverstream = clientsocket.getstream();         byte[] outstream = system.text.encoding.ascii.getbytes("world domination");         serverstream.write(outstream, 0, outstream.length);         serverstream.flush();         thread receive = new thread(new threadstart(receivemess));      }      private void receivemess()     {         serverstream = clientsocket.getstream();         byte[] instream = new byte[10025];         serverstream.read(instream, 0, (int)clientsocket.receivebuffersize);         string returndata = system.text.encoding.ascii.getstring(instream);         msg("data server : " + returndata);     }     private void connectbutton_click(object sender, eventargs e)     {         msg("client started");         clientsocket.connect("127.0.0.1", 3000);         this.display.text = "client socket program - server connected ...";     } } 

you seem forget start receive thread:

private void sendbutton_click(object sender, eventargs e) {     // ... skipped .........     thread receive = new thread(new threadstart(receivemess));     receive.start(); // <--- try adding line }