//六步創建TCP服務端 #include<iostream> #include<Windows.h> using namespace std;int main() {//初始化ws2_32.dllWORD ver = MAKEWORD(2, 2);WSADATA wsaData;WSAStartup(ver, &wsaData);//對應WSACleanup的調用//1.建立一個socketSOCKET _sock = ::socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if (_sock == INVALID_SOCKET){cout<<"創建socket失敗" << endl;WSACleanup();return 0;}else{cout << "創建socket成功" << endl;}//填充sockaddr_in結構sockaddr_in sin;sin.sin_family = AF_INET;sin.sin_port = htons(1234);sin.sin_addr.S_un.S_addr = INADDR_ANY;//2.綁定端口if (bind(_sock, (sockaddr*)&sin, sizeof(sin)) == SOCKET_ERROR){cout << "綁定端口失敗" << endl;WSACleanup();return 0;}else{cout << "綁定端口成功" << endl;}//3.Listen監聽網絡端口if (listen(_sock, 10) == SOCKET_ERROR){cout << "監聽端口失敗" << endl;WSACleanup();return 0;}else{cout << "監聽端口成功" << endl;}//4.accept等待客戶端連接sockaddr_in clientAddr;int nAddrLen= sizeof(clientAddr);SOCKET client;char buf[] = "Hello,I am Server.";while (true){client = accept(_sock, (sockaddr*)&clientAddr, &nAddrLen);if (client == INVALID_SOCKET){cout << "接受到無效客戶端" << endl;WSACleanup();return 0;}else{cout << "接受客戶端連接成功" << endl;}cout << "新客戶端連接IP： " << inet_ntoa(clientAddr.sin_addr) << endl;//5.send向客戶端發送一條數據send(client, buf, strlen(buf) + 1, 0);}//6.關閉套接字closesocketclosesocket(client);closesocket(_sock);//清楚windows socket環境WSACleanup();system("pause");return 0; }

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