https://www.sylgalaxy.xyz/tags/%E9%83%A8%E7%BD%B2/Recent content in 部署 on 鹿鸣青野的blogHugozh-cnTue, 25 Aug 2026 00:00:00 +0000https://www.sylgalaxy.xyz/posts/cpp-http-server-deploy/Tue, 25 Aug 2026 00:00:00 +0000https://www.sylgalaxy.xyz/posts/cpp-http-server-deploy/<blockquote> <p>在一台 2C2G 的云服务器上实测：单文件 HTTP 服务器，<code>g++</code> 编译，监听 8080 端口，从编译到公网访问全流程跑通。</p> </blockquote> <h2 id="1-socket-七步流程">1. socket 七步流程</h2> <p>示例是一个约 60 行的单文件程序 <code>http_server.cpp</code>，纯 Linux socket API、零第三方依赖，放在你自己的项目目录里即可。</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-text" data-lang="text"><span style="display:flex;"><span>socket() → bind() → listen() → accept() → recv() → send() → close() </span></span><span style="display:flex;"><span> 建电话 插网线 开机待命 接电话 听需求 答复 挂断 </span></span></code></pre></div><table> <thead> <tr> <th>步骤</th> <th>调用</th> <th>说明</th> </tr> </thead> <tbody> <tr> <td>1</td> <td><code>socket(AF_INET, SOCK_STREAM, 0)</code></td> <td>IPv4 + TCP，返回文件描述符（Linux 一切皆文件）</td> </tr> <tr> <td>2</td> <td><code>bind(fd, &amp;addr, sizeof)</code></td> <td>绑定地址；<code>INADDR_ANY</code>（0.0.0.0）= 监听所有网卡</td> </tr> <tr> <td>3</td> <td><code>listen(fd, 16)</code></td> <td>开始待命；16 是 backlog 等待队列长度</td> </tr> <tr> <td>4</td> <td><code>accept(fd, ...)</code></td> <td>阻塞等客户端，返回新 fd（每客户一个）</td> </tr> <tr> <td>5</td> <td><code>recv(fd, buf, n, 0)</code></td> <td>读 HTTP 请求报文（原始文本）</td> </tr> <tr> <td>6</td> <td><code>send(fd, resp, len, 0)</code></td> <td>回 HTTP 响应</td> </tr> <tr> <td>7</td> <td><code>close(fd)</code></td> <td>挂断，回 while 等下一客</td> </tr> </tbody> </table> <p>要点：</p>