#include <stdio.h> #include <winsock2.h> #pragma comment(lib,"ws2_32.lib") int main(int argc, char* argv[]) { //初始化WSA WORD sockVersion = MAKEWORD(2,2); WSADATA wsaData; if(WSAStartup(sockVersion, &wsaData)!=0) { return 0; } //創建套接字 SOCKET slisten = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(slisten == INVALID_SOCKET) { printf("socket error !"); return 0; } //綁定IP和端口 sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_port = htons(8888); sin.sin_addr.S_un.S_addr = INADDR_ANY; if(bind(slisten, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR) { printf("bind error !"); } //開始監聽 if(listen(slisten, 5) == SOCKET_ERROR) { printf("listen error !"); return 0; } //循環接收數據 SOCKET sClient; sockaddr_in remoteAddr; int nAddrlen = sizeof(remoteAddr); char revData[255]; while (true) { printf("等待連接...\n"); sClient = accept(slisten, (SOCKADDR *)&remoteAddr, &nAddrlen); if(sClient == INVALID_SOCKET) { printf("accept error !"); continue; } printf("接受到一個連接：%s \r\n", inet_ntoa(remoteAddr.sin_addr)); //接收數據 int ret = recv(sClient, revData, 255, 0); if(ret > 0) { revData[ret] = 0x00; printf(revData); } //發送數據 const char * sendData = "你好，TCP客戶端！\n"; send(sClient, sendData, strlen(sendData), 0); closesocket(sClient); } closesocket(slisten); WSACleanup(); return 0; }

未鏈接庫，出現如下編譯錯誤：

工具-編譯選項，添加-lws2_32

編譯成功，問題解決。

總結

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