102 lines
3.0 KiB
HTML
102 lines
3.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<!-- 移动端适配核心标签 -->
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<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no">
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<title>DNFS · 树状笔记</title>
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<style></style>
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</head>
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<body>
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<!-- 文章主标题 -->
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<div id="article-title">
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<h1>
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<p>Python</p>
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</h1>
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</div>
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<!-- 文章详情 -->
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<div id="publish-time">
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<p>发布时间：2026-07-11</p>
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</div>
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<div>
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<span id="visit-count">浏览：126</span>
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<span id="like-count">点赞：28</span>
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<span id="share-count">分享：7</span>
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</div>
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<!-- 文章正文-->
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<div id="article-content">
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<p>
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Python 的 <code>socket</code>
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模块是网络编程的核心，其函数可分为<strong>核心套接字操作</strong>、<strong>套接字选项设置</strong>、<strong>辅助工具函数</strong>三大类。本文将逐一拆解所有函数的语法、参数、用法和实战示例，覆盖从基础到高级的所有场景。
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</p>
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<h2>一、模块初始化与核心对象</h2>
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<h3>1. socket.socket()：创建套接字对象</h3>
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<p><strong>语法</strong>：</p>
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<pre><code>socket.socket(family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None)</code></pre>
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<p><strong>作用</strong>：创建一个套接字对象，是所有网络操作的基础。</p>
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<p><strong>参数说明</strong>：</p>
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<table>
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<tr>
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<th>参数</th>
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<th>取值</th>
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<th>说明</th>
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</tr>
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<tr>
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<td><code>family</code></td>
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<td><code>AF_INET</code>（默认）</td>
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<td>IPv4 协议族（最常用）</td>
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</tr>
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<tr>
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<td></td>
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<td><code>AF_INET6</code></td>
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<td>IPv6 协议族</td>
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</tr>
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<tr>
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<td></td>
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<td><code>AF_UNIX</code></td>
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<td>Unix 域套接字（本地进程通信）</td>
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</tr>
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<tr>
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<td><code>type</code></td>
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<td><code>SOCK_STREAM</code>（默认）</td>
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<td>TCP 套接字（面向连接、可靠）</td>
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</tr>
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<tr>
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<td></td>
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<td><code>SOCK_DGRAM</code></td>
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<td>UDP 套接字（无连接、数据报）</td>
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</tr>
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<tr>
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<td></td>
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<td><code>SOCK_RAW</code></td>
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<td>原始套接字（可操作 IP 层，用于抓包）</td>
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</tr>
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<tr>
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<td><code>proto</code></td>
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<td>0（默认）</td>
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<td>协议编号，默认自动匹配 type（TCP=6，UDP=17）</td>
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</tr>
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<tr>
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<td><code>fileno</code></td>
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<td>None（默认）</td>
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<td>复用已有文件描述符，无需手动指定</td>
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</tr>
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</table>
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</div>
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<div class="other-recommend">
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<h3>其他推荐</h3>
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</div>
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<div class="recommend-list" id="recommend-list">
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<ul>
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<li><a href="https://www.baidu.com">百度推荐</a></li>
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</ul>
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</div>
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</body>
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</html> |