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    <h1 class="page-title">常见问题</h1>
    <div class="page-meta">更新于 2026-09-17</div>
    <article class="md">
<h2 id="sec-1">请求报 CORS 错误？</h2>
<p>Web 端请求默认经本地 Gin 代理（gin-proxy）发出，不会遇到 CORS。若仍报错：</p>
<ul>
<li>重启应用后再试（本地服务随应用自动运行）。</li>
<li>检查本机防火墙 / 安全软件是否拦截了应用的本地回环端口。</li>
<li>桌面端优先走 Tauri 原生网络栈，同样不受 CORS 限制。</li>
</ul>
<h2 id="sec-2">浏览器 WebSocket 不能加自定义 Header？</h2>
<p>规范限制。在 WS「握手配置」里填写 Header 后，OpsxAPI 自动改走本地 Gin 隧道（见《WebSocket》章节），Header 由 Gin 在握手时代为携带。不填 Header 则直连。</p>
<h2 id="sec-3">外部 wss:// 地址连不上（DNS 失败）？</h2>
<p>本机网络环境可能限制部分域名解析。可先用 <code>curl -v wss://…</code> 或换用公共 echo 服务验证；自建服务请确认防火墙与证书。</p>
<h2 id="sec-4">MQTT 一定要 wss:// 吗？</h2>
<p>浏览器只能通过 WebSocket 连 MQTT。常见 Broker 的 WS 端口：EMQX <code>8084/mqtt</code>（TLS）、<code>8083/mqtt</code>（明文，仅 http 页面）。<code>mqtt://</code> TCP 直连仅在桌面原生环境可行。</p>
<h2 id="sec-5">数据存在哪里？换电脑怎么办？</h2>
<p>集合 / 环境 / 历史保存在浏览器 localStorage。迁移：<strong>导出 → 全量备份</strong> 生成 JSON，在新设备 <strong>导入</strong> 即可。</p>
<h2 id="sec-6">误删了接口 / 想回到初始状态？</h2>
<p>设置（顶栏 ⋯）→ 重置工作区，恢复内置示例集合。日常请养成导出备份的习惯。</p>
<h2 id="sec-7">SSE 事件流看着卡住了？</h2>
<ul>
<li>事件频率低（如告警流）属正常，等待即可。</li>
<li>部分网关会缓冲 SSE，工具会在直连失败时自动切换 Gin 流式代理；若仍无事件，检查中间层（Nginx 需关闭 <code>proxy_buffering</code>）。</li>
</ul>
<h2 id="sec-8">发送按钮点击后没反应？</h2>
<p>查看响应区是否有红色错误提示（如代理不可达）。<code>&lt;/&gt;</code> 代码 生成 cURL 在终端执行可快速分辨是工具问题还是网络 / 接口问题。</p>
<h2 id="sec-9">支持文件上传吗？</h2>
<p>form-data 当前支持文本字段；文件上传请用 <code>&lt;/&gt;</code> 代码 生成的 cURL / 脚本执行。</p>
<h2 id="sec-10">更多问题？</h2>
<ul>
<li>服务端能力与边界：见《服务端 API 参考》</li>
<li>各协议用法：见左侧「请求调试」分组</li>
</ul>

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      <a class="toc-l2" href="#sec-1">请求报 CORS 错误？</a>
      <a class="toc-l2" href="#sec-2">浏览器 WebSocket 不能加自定义 Header？</a>
      <a class="toc-l2" href="#sec-3">外部 wss:// 地址连不上（DNS 失败）？</a>
      <a class="toc-l2" href="#sec-4">MQTT 一定要 wss:// 吗？</a>
      <a class="toc-l2" href="#sec-5">数据存在哪里？换电脑怎么办？</a>
      <a class="toc-l2" href="#sec-6">误删了接口 / 想回到初始状态？</a>
      <a class="toc-l2" href="#sec-7">SSE 事件流看着卡住了？</a>
      <a class="toc-l2" href="#sec-8">发送按钮点击后没反应？</a>
      <a class="toc-l2" href="#sec-9">支持文件上传吗？</a>
      <a class="toc-l2" href="#sec-10">更多问题？</a>
      
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