基于TCP的网络通信程序演示[命令行程序]

来源：互联网发布：mac外置触摸板编辑：程序博客网时间：2024/05/22 13:13

本程序仅仅是为了演示基于TCP协议的网络通信程序的写法，采用阻塞模式，代码简单：

服务器端代码：

#include "Winsock2.h"#include "stdio.h"void main(){WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested = MAKEWORD(1,1);err = WSAStartup( wVersionRequested, &wsaData );if ( err != 0 ){return;}if ( LOBYTE( wsaData.wVersion ) != 1 ||HIBYTE( wsaData.wVersion ) != 1 ){WSACleanup( );return;}SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0);SOCKADDR_IN addrSrv;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);SOCKADDR_IN addrClient;int len=sizeof(SOCKADDR);while(1){SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);char sendBuf[100];sprintf(sendBuf,"Welcom %s to http://blog.hulin0229.com", inet_ntoa(addrClient.sin_addr));send(sockConn,sendBuf,strlen(sendBuf)+1,0);  char recvBuf[100];recv(sockConn,recvBuf,strlen(recvBuf),0);printf("%s/n",recvBuf);closesocket(sockConn);}}

『注意』本程序使用了动态连接库文件Ws2_32.lib，需要在工程属性里添加对Ws2_32.lib的连接。本程序用VC2005编译，添加方法是：在project/Configuration properties/Linker/Input下的Additional Dependencies 项里写如Ws2_32.lib

客户端代码：

#include "Winsock2.h"#include "stdio.h"void main(){WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested = MAKEWORD(1,1);err = WSAStartup( wVersionRequested, &wsaData );if ( err != 0 ){return;}if ( LOBYTE( wsaData.wVersion ) != 1 ||HIBYTE( wsaData.wVersion ) != 1 ){WSACleanup( );return;}SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);SOCKADDR_IN addrSrv;addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); //127.0.0.1是一个回路地址。addrSrv.sin_family=AF_INET;addrSrv.sin_port=htons(6000);connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));char recvBuf[100];recv(sockClient,recvBuf,strlen(recvBuf),0);printf("%s/n",recvBuf);send(sockClient,"我是胡林",strlen("我是胡林")+1,0);closesocket(sockClient);WSACleanup();}

同服务器端一样，客户端程序也使用了Ws2_32.lib动态连接库，需要在工程属性里添加对Ws2_32.lib的连接。