c++ socket通信

首先是打开vc6.0, 点击文件新建

选择如图所示:

输入一个工程名

然后新建一个C++文件

如图所示:

Server端代码:

#include <WINSOCK2.H> #include <stdio.h> #pragma comment(lib,"ws2_32.lib") void main() { //创建套接字 WORD myVersionRequest; WSADATA wsaData; myVersionRequest=MAKEWORD(1,1); int err; err=WSAStartup(myVersionRequest,&wsaData); if (!err) { printf("已打开套接字/n"); } else { //进一步绑定套接字 printf("嵌套字未打开!"); return; } SOCKET serSocket=socket(AF_INET,SOCK_STREAM,0);//创建了可识别套接字 //需要绑定的参数 SOCKADDR_IN addr; addr.sin_family=AF_INET; addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);//ip地址 addr.sin_port=htons(6000);//绑定端口 bind(serSocket,(SOCKADDR*)&addr,sizeof(SOCKADDR));//绑定完成 listen(serSocket,5);//其中第二个参数代表能够接收的最多的连接数 ////////////////////////////////////////////////////////////////////////// //开始进行监听 ////////////////////////////////////////////////////////////////////////// SOCKADDR_IN clientsocket; int len=sizeof(SOCKADDR); while (1) { SOCKET serConn=accept(serSocket,(SOCKADDR*)&clientsocket,&len);//如果这里不是accept而是conection的话。。就会不断的监听 char sendBuf[100]; sprintf(sendBuf,"welcome %s to bejing",inet_ntoa(clientsocket.sin_addr));//找对对应的IP并且将这行字打印到那里 send(serConn,sendBuf,strlen(sendBuf)+1,0); char receiveBuf[100];//接收 recv(serConn,receiveBuf,strlen(receiveBuf)+1,0); printf("%s/n",receiveBuf); closesocket(serConn);//关闭 WSACleanup();//释放资源的操作 } }

Client代码:

#include <WINSOCK2.H> #include <stdio.h> #pragma comment(lib,"ws2_32.lib") void main() { int err; WORD versionRequired; WSADATA wsaData; versionRequired=MAKEWORD(1,1); err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息 if (!err) { printf("客户端嵌套字已经打开!/n"); } else { printf("客户端的嵌套字打开失败!/n"); return;//结束 } SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN clientsock_in; clientsock_in.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); clientsock_in.sin_family=AF_INET; clientsock_in.sin_port=htons(6000); //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数 //listen(clientSocket,5); connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//开始连接 char receiveBuf[100]; recv(clientSocket,receiveBuf,101,0); printf("%s/n",receiveBuf); send(clientSocket,"hello,this is client",strlen("hello,this is client")+1,0); closesocket(clientSocket); WSACleanup(); }