VC++之网络编程三 TCP编程实例

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#编程 #vc++ #tcp #网络 #socket #stream

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本文提供了一个使用Winsock库实现TCP服务器与客户端通信的示例代码。服务器监听6000端口并欢迎连接的客户端，同时接收客户端消息；客户端连接到服务器，接收欢迎消息并发送一条信息。

Server:

#include <Winsock2.h> #include <stdio.h> #include <iostream> using namespace std; void main() { //mide delete word WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested=MAKEWORD(2,2); err=WSAStartup(wVersionRequested,&wsaData); if(err!=0){ return; } if(LOBYTE(wsaData.wVersion)!=2 || HIBYTE(wsaData.wHighVersion)!=2) { 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,"welcome %s http://www.juying.org",inet_ntoa(addrClient.sin_addr)); send(sockConn,sendBuf,strlen(sendBuf)+1,0); char recvBuf[100]; recv(sockConn,recvBuf,100,0); printf("%s/n",recvBuf); closesocket(sockConn); } }

Client:

#include <Winsock2.h> #include <stdio.h> #include <iostream> using namespace std; void main(){ //mide delete word WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested=MAKEWORD(2,2); err=WSAStartup(wVersionRequested,&wsaData); if(err!=0){ return; } if(LOBYTE(wsaData.wVersion)!=2 || HIBYTE(wsaData.wHighVersion)!=2) { 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"); addrSrv.sin_family=AF_INET; addrSrv.sin_port=htons(6000); connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR)); char recvBuf[100]; recv(sockClient,recvBuf,100,0); printf("%s/n",recvBuf); send(sockClient,"This is wangwu",strlen("This is wangwu")+1,0); closesocket(sockClient); WSACleanup(); }

注意：

server 和 client 都要"项目属性"--->"配置属性"----> "链接"----> "输入" --->"附加依赖项"中添加"ws2_32.lib"