{"id":30165,"date":"2025-04-20T17:11:02","date_gmt":"2025-04-20T09:11:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/30165.html"},"modified":"2025-04-20T17:11:02","modified_gmt":"2025-04-20T09:11:02","slug":"vc%e5%ae%9e%e7%8e%b0tcp%e7%bd%91%e7%bb%9c%e9%80%9a%e8%ae%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%a2%e6%88%b7%e7%ab%af%ef%bc%88%e9%99%84%e5%b8%a6%e6%ba%90%e7%a0%81%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/30165.html","title":{"rendered":"VC++\u5b9e\u73b0++tcp\u7f51\u7edc\u901a\u8baf\u670d\u52a1\u5668+\u5ba2\u6237\u7aef\uff08\u9644\u5e26\u6e90\u7801\uff09"},"content":{"rendered":"<h4>VC&#043;&#043; \u5b9e\u73b0 TCP \u7f51\u7edc\u901a\u4fe1&#xff08;\u670d\u52a1\u5668 &#043; \u5ba2\u6237\u7aef&#xff09;<\/h4>\n<p>\u672c\u6587\u5c06\u5c55\u793a\u5982\u4f55\u4f7f\u7528 VC&#043;&#043; \u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684 TCP \u7f51\u7edc\u901a\u4fe1\u5e94\u7528&#xff0c;\u5305\u62ec\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u3002\u670d\u52a1\u5668\u7aef\u8d1f\u8d23\u76d1\u542c\u5ba2\u6237\u7aef\u8bf7\u6c42\u5e76\u8fd4\u56de\u6570\u636e&#xff0c;\u800c\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u5e76\u63a5\u6536\u54cd\u5e94\u3002<\/p>\n<p>\u6211\u4eec\u5c06\u4f7f\u7528 Windows API \u4e2d\u7684 Winsock \u5e93\u6765\u5b9e\u73b0\u7f51\u7edc\u901a\u4fe1\u3002Winsock \u662f Windows \u5e73\u53f0\u4e0a\u7684\u7f51\u7edc\u7f16\u7a0b\u63a5\u53e3&#xff0c;\u652f\u6301 TCP\/IP \u7f51\u7edc\u901a\u4fe1\u534f\u8bae\u3002<\/p>\n<h4>\u9879\u76ee\u4ecb\u7ecd<\/h4>\n<p>\u672c\u9879\u76ee\u7684\u76ee\u6807\u662f\u901a\u8fc7\u4f7f\u7528 Winsock \u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684 TCP \u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u3002\u670d\u52a1\u5668\u7aef\u76d1\u542c\u7279\u5b9a\u7684\u7aef\u53e3&#xff0c;\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5\u3002\u5ba2\u6237\u7aef\u8fde\u63a5\u5230\u670d\u52a1\u5668\u5e76\u53d1\u9001\u8bf7\u6c42&#xff0c;\u670d\u52a1\u5668\u8fd4\u56de\u54cd\u5e94\u3002\u6211\u4eec\u5c06\u7528 send() \u548c recv() \u51fd\u6570\u6765\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002<\/p>\n<h4>\u76f8\u5173\u77e5\u8bc6<\/h4>\n<li>\n<p>Winsock \u7f16\u7a0b&#xff1a;<\/p>\n<ul>\n<li>WSAStartup&#xff1a;\u521d\u59cb\u5316 Winsock \u5e93\u3002<\/li>\n<li>socket&#xff1a;\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u3002<\/li>\n<li>bind&#xff1a;\u7ed1\u5b9a\u5957\u63a5\u5b57\u5230\u672c\u5730\u5730\u5740\u548c\u7aef\u53e3\u3002<\/li>\n<li>listen&#xff1a;\u4f7f\u5957\u63a5\u5b57\u5904\u4e8e\u76d1\u542c\u72b6\u6001\u3002<\/li>\n<li>accept&#xff1a;\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002<\/li>\n<li>send \u548c recv&#xff1a;\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002<\/li>\n<li>closesocket&#xff1a;\u5173\u95ed\u5957\u63a5\u5b57\u3002<\/li>\n<li>WSACleanup&#xff1a;\u6e05\u7406 Winsock\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>TCP \u548c UDP&#xff1a;<\/p>\n<ul>\n<li>\u672c\u9879\u76ee\u4f7f\u7528\u7684\u662f TCP \u534f\u8bae&#xff0c;\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u53ef\u9760\u5e76\u6309\u987a\u5e8f\u5230\u8fbe\u3002<\/li>\n<\/ul>\n<\/li>\n<h4>\u4ee3\u7801\u7ed3\u6784<\/h4>\n<li>\n<p>\u670d\u52a1\u5668\u7aef&#xff1a;<\/p>\n<ul>\n<li>\u521d\u59cb\u5316 Winsock \u5e93\u3002<\/li>\n<li>\u521b\u5efa\u5957\u63a5\u5b57\u5e76\u7ed1\u5b9a\u5230\u672c\u5730 IP \u5730\u5740\u548c\u7aef\u53e3\u3002<\/li>\n<li>\u76d1\u542c\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\u3002<\/li>\n<li>\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\u5e76\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u3002<\/li>\n<li>\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5ba2\u6237\u7aef&#xff1a;<\/p>\n<ul>\n<li>\u521d\u59cb\u5316 Winsock \u5e93\u3002<\/li>\n<li>\u521b\u5efa\u5957\u63a5\u5b57\u5e76\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002<\/li>\n<li>\u53d1\u9001\u6570\u636e\u5230\u670d\u52a1\u5668\u5e76\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94\u3002<\/li>\n<li>\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<\/li>\n<h4>\u670d\u52a1\u5668\u7aef\u4ee3\u7801<\/h4>\n<p>#include &lt;winsock2.h&gt;<br \/>\n#include &lt;iostream&gt;<br \/>\n#include &lt;string&gt;<\/p>\n<p>#pragma comment(lib, &#034;ws2_32.lib&#034;) \/\/ \u94fe\u63a5 Winsock \u5e93<\/p>\n<p>\/\/ \u670d\u52a1\u5668\u7aef<br \/>\nint main() {<br \/>\n    WSADATA wsaData;<br \/>\n    SOCKET listenSocket, clientSocket;<br \/>\n    sockaddr_in serverAddr, clientAddr;<br \/>\n    int clientAddrSize &#061; sizeof(clientAddr);<br \/>\n    char recvBuffer[512];<\/p>\n<p>    \/\/ \u521d\u59cb\u5316 Winsock \u5e93<br \/>\n    if (WSAStartup(MAKEWORD(2, 2), &amp;wsaData) !&#061; 0) {<br \/>\n        std::cerr &lt;&lt; &#034;Winsock initialization failed.&#034; &lt;&lt; std::endl;<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u521b\u5efa\u76d1\u542c\u5957\u63a5\u5b57<br \/>\n    listenSocket &#061; socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);<br \/>\n    if (listenSocket &#061;&#061; INVALID_SOCKET) {<br \/>\n        std::cerr &lt;&lt; &#034;Socket creation failed.&#034; &lt;&lt; std::endl;<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u914d\u7f6e\u670d\u52a1\u5668\u5730\u5740<br \/>\n    serverAddr.sin_family &#061; AF_INET;<br \/>\n    serverAddr.sin_port &#061; htons(8080);  \/\/ \u8bbe\u7f6e\u7aef\u53e3<br \/>\n    serverAddr.sin_addr.s_addr &#061; INADDR_ANY; \/\/ \u76d1\u542c\u6240\u6709\u63a5\u53e3<\/p>\n<p>    \/\/ \u7ed1\u5b9a\u5957\u63a5\u5b57\u5230\u5730\u5740<br \/>\n    if (bind(listenSocket, (struct sockaddr*)&amp;serverAddr, sizeof(serverAddr)) &#061;&#061; SOCKET_ERROR) {<br \/>\n        std::cerr &lt;&lt; &#034;Bind failed.&#034; &lt;&lt; std::endl;<br \/>\n        closesocket(listenSocket);<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u5f00\u59cb\u76d1\u542c\u5ba2\u6237\u7aef\u8fde\u63a5<br \/>\n    if (listen(listenSocket, 1) &#061;&#061; SOCKET_ERROR) {<br \/>\n        std::cerr &lt;&lt; &#034;Listen failed.&#034; &lt;&lt; std::endl;<br \/>\n        closesocket(listenSocket);<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    std::cout &lt;&lt; &#034;Waiting for client connection&#8230;&#034; &lt;&lt; std::endl;<\/p>\n<p>    \/\/ \u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5<br \/>\n    clientSocket &#061; accept(listenSocket, (struct sockaddr*)&amp;clientAddr, &amp;clientAddrSize);<br \/>\n    if (clientSocket &#061;&#061; INVALID_SOCKET) {<br \/>\n        std::cerr &lt;&lt; &#034;Accept failed.&#034; &lt;&lt; std::endl;<br \/>\n        closesocket(listenSocket);<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    std::cout &lt;&lt; &#034;Client connected!&#034; &lt;&lt; std::endl;<\/p>\n<p>    \/\/ \u63a5\u6536\u6570\u636e<br \/>\n    int bytesReceived &#061; recv(clientSocket, recvBuffer, sizeof(recvBuffer), 0);<br \/>\n    if (bytesReceived &gt; 0) {<br \/>\n        recvBuffer[bytesReceived] &#061; &#039;\\\\0&#039;;  \/\/ \u6dfb\u52a0\u5b57\u7b26\u4e32\u7ed3\u675f\u7b26<br \/>\n        std::cout &lt;&lt; &#034;Received from client: &#034; &lt;&lt; recvBuffer &lt;&lt; std::endl;<\/p>\n<p>        \/\/ \u53d1\u9001\u54cd\u5e94<br \/>\n        std::string response &#061; &#034;Hello from server!&#034;;<br \/>\n        send(clientSocket, response.c_str(), response.length(), 0);<br \/>\n    } else {<br \/>\n        std::cerr &lt;&lt; &#034;Receive failed.&#034; &lt;&lt; std::endl;<br \/>\n    }<\/p>\n<p>    \/\/ \u5173\u95ed\u5957\u63a5\u5b57<br \/>\n    closesocket(clientSocket);<br \/>\n    closesocket(listenSocket);<br \/>\n    WSACleanup();<\/p>\n<p>    return 0;<br \/>\n}<\/p>\n<p>\u5ba2\u6237\u7aef\u4ee3\u7801<\/p>\n<p>#include &lt;winsock2.h&gt;<br \/>\n#include &lt;iostream&gt;<br \/>\n#include &lt;string&gt;<\/p>\n<p>#pragma comment(lib, &#034;ws2_32.lib&#034;) \/\/ \u94fe\u63a5 Winsock \u5e93<\/p>\n<p>\/\/ \u5ba2\u6237\u7aef<br \/>\nint main() {<br \/>\n    WSADATA wsaData;<br \/>\n    SOCKET clientSocket;<br \/>\n    sockaddr_in serverAddr;<br \/>\n    char sendBuffer[512], recvBuffer[512];<\/p>\n<p>    \/\/ \u521d\u59cb\u5316 Winsock \u5e93<br \/>\n    if (WSAStartup(MAKEWORD(2, 2), &amp;wsaData) !&#061; 0) {<br \/>\n        std::cerr &lt;&lt; &#034;Winsock initialization failed.&#034; &lt;&lt; std::endl;<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u521b\u5efa\u5ba2\u6237\u7aef\u5957\u63a5\u5b57<br \/>\n    clientSocket &#061; socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);<br \/>\n    if (clientSocket &#061;&#061; INVALID_SOCKET) {<br \/>\n        std::cerr &lt;&lt; &#034;Socket creation failed.&#034; &lt;&lt; std::endl;<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u8bbe\u7f6e\u670d\u52a1\u5668\u5730\u5740<br \/>\n    serverAddr.sin_family &#061; AF_INET;<br \/>\n    serverAddr.sin_port &#061; htons(8080);  \/\/ \u8bbe\u7f6e\u7aef\u53e3<br \/>\n    serverAddr.sin_addr.s_addr &#061; inet_addr(&#034;127.0.0.1&#034;);  \/\/ \u670d\u52a1\u5668 IP \u5730\u5740<\/p>\n<p>    \/\/ \u8fde\u63a5\u5230\u670d\u52a1\u5668<br \/>\n    if (connect(clientSocket, (struct sockaddr*)&amp;serverAddr, sizeof(serverAddr)) &#061;&#061; SOCKET_ERROR) {<br \/>\n        std::cerr &lt;&lt; &#034;Connection failed.&#034; &lt;&lt; std::endl;<br \/>\n        closesocket(clientSocket);<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    std::cout &lt;&lt; &#034;Connected to server!&#034; &lt;&lt; std::endl;<\/p>\n<p>    \/\/ \u53d1\u9001\u6570\u636e<br \/>\n    std::string message &#061; &#034;Hello from client!&#034;;<br \/>\n    send(clientSocket, message.c_str(), message.length(), 0);<\/p>\n<p>    \/\/ \u63a5\u6536\u54cd\u5e94<br \/>\n    int bytesReceived &#061; recv(clientSocket, recvBuffer, sizeof(recvBuffer), 0);<br \/>\n    if (bytesReceived &gt; 0) {<br \/>\n        recvBuffer[bytesReceived] &#061; &#039;\\\\0&#039;;  \/\/ \u6dfb\u52a0\u5b57\u7b26\u4e32\u7ed3\u675f\u7b26<br \/>\n        std::cout &lt;&lt; &#034;Received from server: &#034; &lt;&lt; recvBuffer &lt;&lt; std::endl;<br \/>\n    } else {<br \/>\n        std::cerr &lt;&lt; &#034;Receive failed.&#034; &lt;&lt; std::endl;<br \/>\n    }<\/p>\n<p>    \/\/ \u5173\u95ed\u5957\u63a5\u5b57<br \/>\n    closesocket(clientSocket);<br \/>\n    WSACleanup();<\/p>\n<p>    return 0;<br \/>\n}<\/p>\n<h4>\u4ee3\u7801\u89e3\u91ca<\/h4>\n<h5>\u670d\u52a1\u5668\u7aef\u4ee3\u7801&#xff1a;<\/h5>\n<li>\u521d\u59cb\u5316 Winsock&#xff1a;\u901a\u8fc7\u8c03\u7528 WSAStartup \u6765\u521d\u59cb\u5316 Winsock \u5e93&#xff0c;\u51c6\u5907\u8fdb\u884c\u7f51\u7edc\u64cd\u4f5c\u3002<\/li>\n<li>\u521b\u5efa\u5957\u63a5\u5b57&#xff1a;\u8c03\u7528 socket \u521b\u5efa\u4e00\u4e2a TCP \u5957\u63a5\u5b57&#xff08;SOCK_STREAM&#xff09;\u3002<\/li>\n<li>\u7ed1\u5b9a\u5730\u5740&#xff1a;\u4f7f\u7528 bind \u5c06\u5957\u63a5\u5b57\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684\u7aef\u53e3 8080 \u4e0a&#xff0c;\u8fd9\u6837\u5ba2\u6237\u7aef\u624d\u80fd\u901a\u8fc7\u8be5\u7aef\u53e3\u8fde\u63a5\u3002<\/li>\n<li>\u76d1\u542c\u8fde\u63a5&#xff1a;\u901a\u8fc7 listen \u51fd\u6570\u76d1\u542c\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5\u3002<\/li>\n<li>\u63a5\u6536\u8fde\u63a5&#xff1a;\u4f7f\u7528 accept \u51fd\u6570\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;\u4e00\u65e6\u8fde\u63a5\u6210\u529f&#xff0c;\u670d\u52a1\u5668\u5f00\u59cb\u63a5\u6536\u6570\u636e\u3002<\/li>\n<li>\u63a5\u6536\u6570\u636e\u5e76\u53d1\u9001\u54cd\u5e94&#xff1a;\u4f7f\u7528 recv \u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e&#xff0c;\u7136\u540e\u901a\u8fc7 send \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u54cd\u5e94\u3002<\/li>\n<li>\u6e05\u7406&#xff1a;\u5173\u95ed\u5957\u63a5\u5b57&#xff0c;\u5e76\u8c03\u7528 WSACleanup \u6e05\u7406 Winsock\u3002<\/li>\n<h5>\u5ba2\u6237\u7aef\u4ee3\u7801&#xff1a;<\/h5>\n<li>\u521d\u59cb\u5316 Winsock&#xff1a;\u901a\u8fc7\u8c03\u7528 WSAStartup \u521d\u59cb\u5316 Winsock \u5e93\u3002<\/li>\n<li>\u521b\u5efa\u5957\u63a5\u5b57&#xff1a;\u901a\u8fc7 socket \u521b\u5efa\u4e00\u4e2a TCP \u5957\u63a5\u5b57\u3002<\/li>\n<li>\u8fde\u63a5\u670d\u52a1\u5668&#xff1a;\u901a\u8fc7 connect \u5c06\u5ba2\u6237\u7aef\u8fde\u63a5\u5230\u670d\u52a1\u5668&#xff08;IP \u5730\u5740\u4e3a 127.0.0.1&#xff0c;\u7aef\u53e3\u4e3a 8080&#xff09;\u3002<\/li>\n<li>\u53d1\u9001\u6570\u636e&#xff1a;\u4f7f\u7528 send \u53d1\u9001\u6570\u636e\u5230\u670d\u52a1\u5668\u3002<\/li>\n<li>\u63a5\u6536\u54cd\u5e94&#xff1a;\u4f7f\u7528 recv \u63a5\u6536\u670d\u52a1\u5668\u7684\u54cd\u5e94\u6570\u636e\u3002<\/li>\n<li>\u6e05\u7406&#xff1a;\u5173\u95ed\u5957\u63a5\u5b57&#xff0c;\u5e76\u8c03\u7528 WSACleanup \u6e05\u7406 Winsock\u3002<\/li>\n<h4>\u6d4b\u8bd5\u4e0e\u8fd0\u884c<\/h4>\n<li>\n<p>\u8fd0\u884c\u670d\u52a1\u5668\u7aef&#xff1a;<\/p>\n<ul>\n<li>\u5148\u8fd0\u884c\u670d\u52a1\u5668\u7aef\u7a0b\u5e8f&#xff0c;\u5b83\u5c06\u5f00\u59cb\u76d1\u542c\u7aef\u53e3 8080\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8fd0\u884c\u5ba2\u6237\u7aef&#xff1a;<\/p>\n<ul>\n<li>\u8fd0\u884c\u5ba2\u6237\u7aef\u7a0b\u5e8f&#xff0c;\u5ba2\u6237\u7aef\u4f1a\u8fde\u63a5\u5230\u672c\u5730\u670d\u52a1\u5668\u5e76\u53d1\u9001\u6d88\u606f\u3002<\/li>\n<li>\u670d\u52a1\u5668\u63a5\u6536\u5230\u6d88\u606f\u540e\u4f1a\u56de\u590d\u5ba2\u6237\u7aef&#xff0c;\u5ba2\u6237\u7aef\u63a5\u6536\u670d\u52a1\u5668\u7684\u54cd\u5e94\u5e76\u663e\u793a\u3002<\/li>\n<\/ul>\n<\/li>\n<h4>\u793a\u4f8b\u8f93\u51fa<\/h4>\n<ul>\n<li>\n<p>\u670d\u52a1\u5668\u7aef&#xff08;\u5047\u8bbe\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f &#034;Hello from client!&#034;&#xff09;&#xff1a;<\/p>\n<\/li>\n<\/ul>\n<p>Waiting for client connection&#8230;<br \/>\nClient connected!<br \/>\nReceived from client: Hello from client!<\/p>\n<p>\u5ba2\u6237\u7aef&#xff08;\u6536\u5230\u670d\u52a1\u5668\u7684\u54cd\u5e94 &#034;Hello from server!&#034;&#xff09;&#xff1a;<\/p>\n<p>Connected to server!<br \/>\nReceived from server: Hello 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