> For the complete documentation index, see [llms.txt](https://docs.cooku222.kr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cooku222.kr/security/web-hacking/webgoat/webgoat-http-basics.md).

# \[Webgoat] HTTP Basics

<figure><img src="https://blog.kakaocdn.net/dna/cu8ByK/dJMb99Y08cG/AAAAAAAAAAAAAAAAAAAAALigvNBW1S5twy_FVwSblCLUrTV91AiaMkDTz06o8C7Y/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=0jsxn47JrOt8UODZiujuZO%2BAKdY%3D" alt="" height="567" width="1462"><figcaption></figcaption></figure>

HTTP 구조에 대한 설명이 간략하게 나온다.&#x20;

<figure><img src="https://blog.kakaocdn.net/dna/cfMQAl/dJMcahW3alR/AAAAAAAAAAAAAAAAAAAAAJSZl9XS8fAtRX4fncJPCXFBBy5XnnYf99d-5cgoFm6t/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=0PMSo92mBYBrXyu6HM4sag7YLPM%3D" alt="" height="326" width="1478"><figcaption></figcaption></figure>

내가 입력한 값을 서버가 뒤집고 있다고 나옴.

<figure><img src="https://blog.kakaocdn.net/dna/bXKQ2r/dJMcaaDCD11/AAAAAAAAAAAAAAAAAAAAAMIO-WDrsLoG3JFj2ujzAbqZzymyomNN6ODAtekcKGJp/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=4rZHgCSMe79tKrx3kYGMRQjE4WQ%3D" alt="" height="267" width="1487"><figcaption></figcaption></figure>

<figure><img src="https://blog.kakaocdn.net/dna/d2zrrw/dJMcafdRseu/AAAAAAAAAAAAAAAAAAAAALfjk0KmA86WZXyzOoLftOu_eZz5Xoq1_a3K5TYLLAfQ/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&#x26;expires=1782831599&#x26;allow_ip=&#x26;allow_referer=&#x26;signature=NrPXkXpEfoaaMAS583goblOyBS8%3D" alt="" height="131" width="427"><figcaption></figcaption></figure>

화면을 마우스 우클릭한 후 \[검사]를 누르면 개발자도구의 콘솔 안에서 magic number가 나온다. 클라이언트 측 내부 코드의 식별값을 개발자도구로 확인할 수 있기 때문이다.&#x20;


---

# 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:

```
GET https://docs.cooku222.kr/security/web-hacking/webgoat/webgoat-http-basics.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.
