https://wdd.js.org/zh/categories/kamailio/ Recent content in Kamailio on The SIP Lab Hugo -- 0.151.0 zh Fri, 06 Mar 2026 15:42:42 +0800 https://wdd.js.org/zh/posts/2026/kamailio-ipc/ Fri, 06 Mar 2026 15:42:42 +0800 https://wdd.js.org/zh/posts/2026/kamailio-ipc/ <ul> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#1-%e6%a6%82%e8%bf%b0">1. 概述</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#2-udp-socket%e8%bf%9b%e7%a8%8b%e5%a4%84%e7%90%86%e5%88%86%e6%9e%90">2. UDP Socket进程处理分析</a> <ul> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#21-udp%e7%ab%af%e5%8f%a3%e4%bf%a1%e6%81%af%e6%94%b6%e9%9b%86">2.1. UDP端口信息收集</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#22-%e7%ab%af%e5%8f%a3%e7%bb%91%e5%ae%9a">2.2. 端口绑定</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#23-%e8%bf%9b%e7%a8%8bfork%e9%98%b6%e6%ae%b5">2.3. 进程fork阶段</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#24-udp-read-%e9%98%b6%e6%ae%b5">2.4. UDP read 阶段</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#25-udp-%e6%b6%88%e6%81%af%e8%bf%9b%e7%a8%8b%e9%97%b4%e8%b4%9f%e8%bd%bd%e5%9d%87%e8%a1%a1%e9%98%b6%e6%ae%b5">2.5. UDP 消息进程间负载均衡阶段</a></li> </ul> </li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#3-tcp%e6%b6%88%e6%81%af%e5%a4%84%e7%90%86%e5%88%86%e6%9e%90">3. TCP消息处理分析</a> <ul> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#31-%e6%b6%88%e6%81%af%e5%a4%84%e7%90%86%e6%a8%a1%e5%9e%8b">3.1. 消息处理模型</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#32-%e8%b4%9f%e8%bd%bd%e5%9d%87%e8%a1%a1%e7%ad%96%e7%95%a5">3.2. 负载均衡策略</a></li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#33-%e8%b0%83%e7%94%a8%e9%93%be%e5%88%86%e6%9e%90">3.3. 调用链分析</a></li> </ul> </li> <li><a href="https://wdd.js.org/zh/posts/2026/kamailio-ipc/#4-%e4%b8%be%e4%be%8b%e8%af%b4%e6%98%8e-udp%e8%af%bbtcp%e5%8f%91">4. 举例说明： UDP读TCP发</a></li> </ul> <h1 id="1-概述">1. 概述</h1> <p>kamailio SIP消息处理进程主要分为三类。</p> <table> <thead> <tr> <th>类别</th> <th>功能</th> <th>数量</th> </tr> </thead> <tbody> <tr> <td>UDP worker进程</td> <td>处理以UDP传输的SIP消息</td> <td>port * children</td> </tr> <tr> <td>TCP main进程</td> <td>负责tcp链接管理，生命周期维护，tcp work的消息分发</td> <td>1</td> </tr> <tr> <td>TCP worker进程</td> <td>处理以TCP传输的SIP消息</td> <td>children</td> </tr> </tbody> </table> <p>以下面的配置为例：</p> <p>则SIP消息处理进程数量为：<code>4 * 2 + 1 + 4</code> = 13个</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>children<span style="color:#f92672">=</span><span style="color:#ae81ff">4</span> </span></span><span style="display:flex;"><span>listen<span style="color:#f92672">=</span>udp:127.0.0.1:5060 </span></span><span style="display:flex;"><span>listen<span style="color:#f92672">=</span>udp:127.0.0.1:5080 </span></span><span style="display:flex;"><span>listen<span style="color:#f92672">=</span>tcp:127.0.0.1:5061 </span></span></code></pre></div><p>在生成环境，建议children设置为<code>CPU核数</code>, 这样能最大化利用多核能力，并且避免太多的进程切换。</p> <h1 id="2-udp-socket进程处理分析">2. UDP Socket进程处理分析</h1> <p>UDP Socket处理主要分为三个步骤</p>