> For the complete documentation index, see [llms.txt](https://surge.mitsea.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://surge.mitsea.com/rule/http.md).

# HTTP 规则

共有两种 HTTP 规则类型。HTTP 规则适用于 HTTP 请求或 HTTPS 请求。它不会影响 TCP 连接。

#### USER-AGENT

```ini
USER-AGENT,Instagram*,DIRECT
```

如果请求的 User-Agent 匹配，则触发该规则。支持通配符 `*` 和 `?`。

#### URL-REGEX

`URL-REGEX,^http://google\.com,DIRECT`

如果 URL 匹配该正则表达式，则触发该规则。

你可以追加 `extended-matching` 参数以同时测试 HTTP Host 请求头（或 `:authority`）和 SNI，这在需要 TLS 握手信息时非常有用：

```ini
URL-REGEX,^https://example\.com,Proxy,extended-matching
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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://surge.mitsea.com/rule/http.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.