> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/cn/proxies/residential-proxies/additional-information.md).

# 响应码

了解住宅代理的不同响应码。理解各代码下的问题并解决常见状态错误。

来自我们基础设施的错误将在 `X-Error-Description` **响应头**. 此响应头提供有关错误的详细信息以及下一步操作指导。

{% hint style="warning" %}
如果您从目标网站收到错误，响应中将不包含此响应头。在这种情况下，请检查您的爬取设置，看看是否有助于解决问题。
{% endhint %}

如果您遇到此处未列出的响应代码，请联系 [**客户支持**](mailto:support@oxylabs.io) 或您的客户经理以获取进一步帮助。

<table><thead><tr><th width="133.86328125">响应代码</th><th width="198">错误消息</th><th>说明</th></tr></thead><tbody><tr><td><code>200</code></td><td><code>正常</code></td><td>隧道建立成功。</td></tr><tr><td><code>400</code></td><td><code>错误请求</code></td><td>无法解析请求。请检查请求格式是否正确。</td></tr><tr><td><code>400</code></td><td><code>错误请求</code></td><td>不支持 SOCKS 版本。请使用 SOCKS5 发起请求。</td></tr><tr><td><code>400</code></td><td><code>错误请求</code></td><td>使用了不受支持的参数。如果您有任何疑问，请联系支持或您的客户经理。</td></tr><tr><td><code>400</code></td><td><code>错误请求</code></td><td>收到无效的 HTTP 请求。请重试。</td></tr><tr><td><code>403</code></td><td><code>访问被拒绝</code></td><td>受限目标。请联系支持或您的客户经理，如有任何疑问。</td></tr><tr><td><code>407</code></td><td><code>访问被拒绝</code></td><td>访问被拒绝：用户认证失败。请检查您的凭证并重试。</td></tr><tr><td><code>407</code></td><td><code>访问被拒绝</code></td><td>访问被拒绝：已达到流量限制。请联系支持或您的客户经理，如有任何疑问。</td></tr><tr><td><code>500</code></td><td><code>服务器内部错误</code></td><td>服务器内部错误：我们遇到了内部错误。请重试。</td></tr><tr><td><code>502</code></td><td><code>响应错误</code></td><td>请求过程中收到无效的 HTTP 响应。请重试。</td></tr><tr><td><code>502</code></td><td><code>响应错误</code></td><td>请求过程中收到无效响应。请重试。</td></tr><tr><td><code>502</code></td><td><code>网关错误</code></td><td>会话失败。请开始新会话。</td></tr><tr><td><code>502</code></td><td><code>网关错误</code></td><td>未找到出口节点（会话已结束）。请尝试使用不同的筛选条件（或开始新会话）。</td></tr><tr><td><code>502</code></td><td><code>网关错误</code></td><td>我们遇到了错误。请重试。</td></tr><tr><td><code>502</code></td><td><code>网关错误</code></td><td>客户端已断开连接。请重试。</td></tr><tr><td><code>504</code></td><td><code>超时</code></td><td>请求超时。请重试。</td></tr><tr><td><code>504</code></td><td><code>超时</code></td><td>无法访问目标。请检查目标 URL 是否正确并重试。</td></tr><tr><td><code>522</code></td><td><code>响应错误</code></td><td>请求过程中收到无效响应。请重试。</td></tr></tbody></table>


---

# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://developers.oxylabs.io/products/cn/proxies/residential-proxies/additional-information.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.