套接字的编程步骤 在使用之前须链接库函数:工程->设置->Link->输入ws2_32.lib,OK! SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0);//创建套接字(socket)。 SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);//转换Unsigned short为网络字节序的格式 addrSrv.sin_family=AF_INET; addrSrv.sin_port=htons(6000); 客户端代码如下: #include <Winsock2.h> #include <stdio.h> void main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 1, 1 ); err = WSAStartup( wVersionRequested, &wsaData );加载套接字库 if ( err != 0 ) { return; } if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 ) { WSACleanup()( ); return; } SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);创建套接字(socket)。 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));向服务器发出连接请求(connect)。 char recvBuf[100];和服务器端进行通信(send/recv)。 recv(sockClient,recvBuf,100,0); printf("%s\n",recvBuf); send(sockClient,"This is lisi",strlen("This is lisi")+1,0); closesocket(sockClient);关闭套接字。 WSACleanup()();//必须调用这个函数清除参数 }
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