Socket多连接服务端

服务端版本1.0

 #include <iostream> #include <vector> #include <map> using namespace std; #include <WinSock.h> #pragma comment(lib, "Wsock32.lib") int main() { WSAData wsd; int err; // 客户端套结字集 vector<SOCKET> SocketClinet;SocketClinet.empty(); vector<SOCKET>::iterator viter; // 客户端套结字地址映射 map<SOCKET, SOCKADDR_IN> InfoClinet;InfoClinet.empty(); map<SOCKET, SOCKADDR_IN>::iterator miter; err = WSAStartup(MAKEWORD(1, 1), &wsd); if (err!=0) { cout<<"WSAStartup is Failed!"<<endl; return 1; } // 创建用于监听的套接字 SOCKET SocketSrv = socket(AF_INET, SOCK_STREAM, 0); if (SocketSrv==INVALID_SOCKET) { cout<<"socket is Failed!"<<endl; WSACleanup(); return 1; } SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(2589); // 绑定套结字 err = bind(SocketSrv, (SOCKADDR*)&addrSrv, sizeof(addrSrv)); if (err==SOCKET_ERROR) { cout<<"bind is Failed!"<<endl; closesocket(SocketSrv); return 1; } // 设置套接字为监听套接字 err = listen(SocketSrv, 5); if (err==SOCKET_ERROR) { cout<<"listen is Failed!"<<endl; return 1; } SOCKADDR_IN addrClinet; int len = sizeof(addrClinet); SOCKET socket; char recvBuf[1024]; while(1) { socket = SOCKET_ERROR; while(socket==SOCKET_ERROR) { socket=accept(SocketSrv, (SOCKADDR*)&addrClinet, &len); // 保存套结字集 SocketClinet.push_back(socket); //InfoClinet[socket]=addrClinet; // 保存套结字映射 InfoClinet.insert(pair<SOCKET, SOCKADDR_IN>(socket, addrClinet)); cout<<inet_ntoa(addrClinet.sin_addr)<<"已连接!"<<endl; } } // 缺点 此处未能执行 // 关闭套结字集 for (viter=SocketClinet.begin(); viter!=SocketClinet.end(); ++viter) { closesocket(*viter); } WSACleanup(); }

当服务端接受多客户端连接时，保存客户端套结字和地址信息，基于控制台应用程序（面向过程），明显有很多缺点，或许能够用多线程处理，主线程接受客户端连接，创建一线程发送消息，创建一线程接收消息。暂时想法是这样，但还是面向事件的客户端方便许多。待续。

 

服务端版本1.1

#include <iostream> #include <vector> #include <map> using namespace std; #include <WinSock.h> #pragma comment(lib, "Wsock32.lib") DWORD WINAPI SendThread(LPVOID lpVoid); DWORD WINAPI RecvThread(LPVOID lpVoid); // 客户端套结字集 vector<SOCKET> SocketClinet; vector<SOCKET>::iterator viter; // 客户端套结字地址映射 map<SOCKET, SOCKADDR_IN> InfoClinet; map<SOCKET, SOCKADDR_IN>::iterator miter; int main() { WSAData wsd; int err; err = WSAStartup(MAKEWORD(1, 1), &wsd); if (err!=0) { cout<<"WSAStartup is Failed!"<<endl; return 1; } // 创建用于监听的套接字 SOCKET SocketSrv = socket(AF_INET, SOCK_STREAM, 0); if (SocketSrv==INVALID_SOCKET) { cout<<"socket is Failed!"<<endl; WSACleanup(); return 1; } SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(2589); // 绑定套结字 err = bind(SocketSrv, (SOCKADDR*)&addrSrv, sizeof(addrSrv)); if (err==SOCKET_ERROR) { cout<<"bind is Failed!"<<endl; closesocket(SocketSrv); return 1; } // 设置套接字为监听套接字 err = listen(SocketSrv, 5); if (err==SOCKET_ERROR) { cout<<"listen is Failed!"<<endl; return 1; } SOCKADDR_IN addrClinet; int len = sizeof(addrClinet); SOCKET socket; HANDLE sendhandle = CreateThread(NULL, 0, SendThread, (LPVOID)NULL, 0, NULL); HANDLE recvhandle = CreateThread(NULL, 0, RecvThread, (LPVOID)NULL, 0, NULL); while(1) { socket = SOCKET_ERROR; while(socket==SOCKET_ERROR) { socket=accept(SocketSrv, (SOCKADDR*)&addrClinet, &len); // 保存套结字集 SocketClinet.push_back(socket); InfoClinet[socket]=addrClinet; // 保存套结字映射 //InfoClinet.insert(pair<SOCKET, SOCKADDR_IN>(socket, addrClinet)); cout<<inet_ntoa(addrClinet.sin_addr)<<"已连接!"<<endl; } } // 问题 此处未执行 // 关闭套结字集 for (viter=SocketClinet.begin(); viter!=SocketClinet.end(); ++viter) { closesocket(*viter); } CloseHandle(sendhandle); CloseHandle(recvhandle); WSACleanup(); } DWORD WINAPI SendThread(LPVOID lpVoid) { for (viter=SocketClinet.begin(); viter!=SocketClinet.end(); ++viter) { send(*viter, "你已成功连接到服务端!", strlen("你已成功连接到服务端!"), 0); } return 0; } DWORD WINAPI RecvThread(LPVOID lpVoid) { char recvBuf[1024]; for (viter=SocketClinet.begin(); viter!=SocketClinet.end(); ++viter) { memset(recvBuf, 0, sizeof(recvBuf)); int err = recv(*viter, recvBuf, strlen(recvBuf), 0); if (err>0) { cout<<inet_ntoa(InfoClinet[*viter].sin_addr)<<"说:"<<recvBuf<<endl; } else if (err==0) { cout<<inet_ntoa(InfoClinet[*viter].sin_addr)<<"已断开连接!"<<endl; //SocketClinet.erase(viter); //miter = InfoClinet.find(*viter); //InfoClinet.erase(miter); } } return 0; }

接着上面的想法，主线程接受客户端连接，创建一线程发送消息，创建一线程接收消息，还是1.0版本问题未解决。纠结啊。待续。