简单的 C++ SOCKET编程 ---基于TCP/IP协议(转) ＆ 双道通信

server端：  #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端：   #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();}

双道通信：

 

昨天刚写了个单向的，仅是雏形，还要修改，仅供参考/****************************************************************************//* client.cpp By chostrider *//* http://hi.baidu.com/chostrider/*/#include <winsock2.h>#include <stdio.h>#include <string>#include <iostream>using namespace std;int main(){WSADATA wsa;SOCKET sockFD;char Buff[1024],*sBO;string str="Welcome!!!";WSAStartup(MAKEWORD(2,2),&wsa);sockFD = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);struct sockaddr_in server;server.sin_family = AF_INET;server.sin_port = htons(3764);server.sin_addr.s_addr=inet_addr("127.0.0.1");connect(sockFD,(struct sockaddr *)&server,sizeof(server));//strcpy(sBO,"Welcome!!!");strcpy(Buff,str.c_str());sBO = Buff;send(sockFD,sBO,20,0);while(cin>>str){ strcpy(Buff,str.c_str()); sBO = Buff; send(sockFD,sBO,20,0);}closesocket(sockFD);WSACleanup();return 1;}/****************************************************************************//****************************************************************************//* server.cpp By chostrider *//* http://hi.baidu.com/chostrider/*/#include <winsock2.h>#include <stdio.h>char Buff[1024];int main(){WSADATA wsa;SOCKET listenFD;int ret;WSAStartup(MAKEWORD(2,2),&wsa);listenFD = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);struct sockaddr_in server;server.sin_family = AF_INET;server.sin_port = htons(3764);server.sin_addr.s_addr=ADDR_ANY;ret=bind(listenFD,(sockaddr *)&server,sizeof(server));ret=listen(listenFD,2);int iAddrSize = sizeof(server);SOCKET clientFD=accept(listenFD,(sockaddr *)&server,&iAddrSize);unsigned long lBytesRead;while(1) {lBytesRead=recv(clientFD,Buff,1024,0);if(lBytesRead<=0) break;printf("receive %d bytes\n",lBytesRead);printf(Buff);printf("\n");ret=send(clientFD,Buff,lBytesRead,0);if(ret<=0) break;}WSACleanup();return 0;}/****************************************************************************/ 编译后先运行是s.exe,再运行c.exe，在c.exe中输入可在s.exe中显出