SOCKET编程实例.doc

Server.cpp/ Server.cpp : Defines the entry point for the console application./#include stdafx.h#include #include using namespace std;int main(int argc, char* argv) / 1.启动SOCKET库，版本为2.0WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested = MAKEWORD(2,0);err = WSAStartup( wVersionRequested, &wsaData );if ( err != 0 ) coutSocket2.0初始化失败，Exit!;return -1;if ( LOBYTE( wsaData.wVersion ) != 2 |HIBYTE( wsaData.wVersion ) != 0 ) WSACleanup( );return -1; /2.创建TCP socket，SOCKET listenSocket = socket(AF_INET, /internetwork: UDP, TCP, etcSOCK_STREAM, /SOCK_STREAM说明是TCP socket0 /protocol);if (listenSocket = INVALID_SOCKET ) coutSocket 创建失败，Exit!;return -1;/3.bind套接字，相当于给本地套接字赋值sockaddr_in myaddr; memset(&myaddr,0,sizeof(myaddr);myaddr.sin_family=AF_INET;myaddr.sin_addr.s_addr = inet_addr(127.0.0.1);myaddr.sin_port=htons(7861);if(bind(listenSocket,(sockaddr*)&myaddr,sizeof(myaddr)=SOCKET_ERROR)return -1;/5.listen 另一端的socketif (listen(listenSocket,5) = SOCKET_ERROR )elsecoutlisten succeed!endl;/6. accept 对方连接SOCKET clientSocket = accept(listenSocket,NULL,NULL);if (clientSocket = INVALID_SOCKET)coutclient socket error, exit!endl;return -1;elsecoutaccepted client socket! 0)cout 接收 len 个字符： buf endl;if (!closesocket(listenSocket)WSAGetLastError();return -1;if (!closesocket(clientSocket) WSAGetLastError();return -1;if (!WSACleanup() WSAGetLastError();return -1;getchar();return 0;Client.cpp#include stdafx.h#include #include using namespace std;int main(int argc, char* argv) / 1.启动SOCKET库，版本为2.0WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested = MAKEWORD(2,0);err = WSAStartup( wVersionRequested, &wsaData );if ( err != 0 ) coutSocket2.0初始化失败，Exit!;return -1;if ( LOBYTE( wsaData.wVersion ) != 2 |HIBYTE( wsaData.wVersion ) != 0 ) WSACleanup( );return -1; /2.创建TCP socket，SOCKET clientSocket = socket(AF_INET, /internetwork: UDP, TCP, etcSOCK_STREAM, /SOCK_STREAM说明是TCP socket0 /protocol);if (clientSocket = INVALID_SOCKET ) coutSocket 创建失败，Exit!;return -1;/3.设置好服务器端的地址与端口号sockaddr_in servAddr; memset(&servAddr,0,sizeof(servAddr);servAddr.sin_family=AF_INET;servAddr.sin_addr.s_addr = inet_addr(127.0.0.1);servAddr.sin_port=htons(7861); /像服务器发送链接请求if (connect(clientSocket,(sockaddr *)&servAddr,sizeof(servAddr) = SOCKET_ERROR)cout 链接错误 endl;elsec