A multi-threaded socket Communication Demo (C language Implementation)

-----------This is the client program--------------#include   "stdio.h" #include   "winsock2.h" #include   "Stdlib.h" # Pragma comment (Lib, "Ws2_32") Void main () {    wsadata wsadata;     wsastartup (Makeword (2,2), &wsadata);     socket s = socket (PF _INET,SOCK_STREAM,IPPROTO_TCP);    sockaddr_in sockaddr;     Sockaddr.sin_family = pf_inet;    sockaddr.sin_addr. S_un. S_ADDR = INET_ADDR ("127.0.0.1");     sockaddr.sin_port = htons (9000);     connect (S, (sockaddr*) &sockaddr,sizeof (sockaddr));     char  BUFFER[MAXBYTE] = {0};    RECV (s,buffer,maxbyte,null);     printf (" ***server*** %s", buffer);     while (TRUE)     {         char* mymsg = new char[10000];        printf (" OK  Now You Can Connect .\n -> ");         gets (mymsg);         send (S,mymsg,strlen (mymsg) +sizeof (char), NULL );     }    closesocket (s);     wsacleanup ();     getchar ();     exit (0);     }

-----This is a server-side program------

#include   "stdio.h" #include   "winsock2.h" #include   "stdlib.h" #define  maxclients 2#pragma  comment (Lib, "Ws2_32")/*     multithreading              socket*/dword winapi processclientrequest (Lpvoid lpparam) {     SOCKET* clientsocket =  (socket*) lpparam;    char* msg =   "hello, welcome to connect . \r\n";     send (*clientsocket, Msg,strlen (msg) +sizeof (char), NULL);     printf ("---SYS----    hello  @[email protected]\n ");     while (TRUE)     {         char buffer[MAXBYTE] = {0};      &NBSP;&NBSP;&NBSP;RECV (*clientsocket,buffer,maxbyte,null);         if ( strcmp (buffer, "exit") ==0) &Nbsp;       {             char* exit_msg =  "bye \r\n";             send (*clientsocket,exit_msg,strlen (exit_msg) +sizeof (char), NULL);             break;        } &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;PRINTF ("--- sys: %s--\n", buffer);     }    closesocket (*clientsocket);     return 0;} Int main () {    wsadata wsadata;    wsastartup (MAKEWORD (2,2), &wsadata);     socket s = socket (PF_INET,SOCK_STREAM,IPPROTO_TCP);     sockaddr_in sockaddr;    sockaddr.sin_family = PF_INET;     sockaddr.sin_addr. S_un. S_ADDR&NBSP;=&NBSP;INET_ADDR ("127.0.0.1");     sockaddr.sin_port = htons (9000);     bind (S, (sockaddr*) &sockaddr,sizeof (sockaddr));     listen (s,1);     printf ("listening on port[%d].\n", 9000);    char*  msg = new char[1000];        handle threads[ maxclients];    //thread storage   Arrays     int CountClient = 0;     while (TRUE)     {         Sockaddr clientaddr;        int size = sizeof ( SOCKADDR);        socket clientsocket;         clientsocket = accept (s,&clientaddr,&size);         //blocking mode   until there is a new tcp  access         printf ("sys: new  Client touched id is %d .\n ", countclient+1);             //        if (CountClient <  maxclients)                          //creating a new thread         {             threads[countclient ++] =  createthread (null,0,&processclientrequest,&clientsocket,0,null);         }        else                                                   //number of threads over   denial of service         {                 char *msg =  " error too  many client connecttion  !. \ r \ n ";                 send ( Clientsocket,msg,strlen (msg) +sizeof (char), NULL);                 printf (" ** sys **  refused !. \ n ");                 Closesocket (Clientsocket);        }    }     printf ("maximize clients occurred for d%.\r\n",  MAXCLIENTS); &nBsp;    waitformultipleobjects (Maxclients,threads,true,infinite);     Closesocket (s);  //off Socket    for (int i=0;i<maxclients;i++)      {        closehandle (Threads[i]);    }     wsacleanup ();     getchar ();     exit (0);     return 0;}

A multi-threaded socket Communication Demo (C language Implementation)