C基础网络编程(能用CL编译)

来源：互联网发布：python linix开发工具编辑：程序博客网时间：2024/06/02 08:32

server.c

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#include<stdlib.h>
#include<conio.h>
#include<stdio.h>
#include<winsock2.h>
#include<windows.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
SOCKET sockClient;
SOCKADDR_IN addrSrv;
char szBuffer[100];
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
  return;
  }
  if ( LOBYTE( wsaData.wVersion ) != 1 ||
   HIBYTE( wsaData.wVersion ) != 1 )
  {
   WSACleanup();
   return;
  }
  sockClient=socket(AF_INET,SOCK_STREAM,0);
  addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
  addrSrv.sin_family=AF_INET;
  addrSrv.sin_port=htons(6000);
  connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
  recv(sockClient,szBuffer,100,0);printf("%s",szBuffer);
  send(sockClient,"this is zhang san",sizeof("this is zhang san")+1,0);
}

==================================================================================

#include<stdlib.h>
#include<conio.h>
#include<stdio.h>
#include<winsock2.h>
#include<windows.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
SOCKET sockSrv;
SOCKADDR_IN addrSrv;
SOCKADDR_IN addrConn;
int len;
wVersionRequested = MAKEWORD( 1,1 );
err = WSAStartup( wVersionRequested, &wsaData );
if(err!=0){
  return;
  }
  if ( LOBYTE( wsaData.wVersion ) != 1 ||
   HIBYTE( wsaData.wVersion ) != 1 ){
    WSACleanup();
    return;
  }
  sockSrv=socket(AF_INET,SOCK_STREAM,0);
  addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
  addrSrv.sin_family=AF_INET;
  addrSrv.sin_port=htons(6000);
  bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
  listen(sockSrv,5);
  //     SOCKET sockClient;
  len =sizeof(SOCKADDR);
  while (1)
  {
   char szBuffer[100];
   char szRecv[100];
   SOCKET sockClient=accept(sockSrv,(SOCKADDR*)&addrConn,&len);
   sprintf(szBuffer,"welcome %s to http://www.sunxin.org",inet_ntoa(addrConn.sin_addr));
   send(sockClient,szBuffer,sizeof(szBuffer)+1,0);
   recv(sockClient,szRecv,100,0);
   printf("%s",szRecv);
   }
}