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tinyhttpd的详细注释版,用于理解网络的连接过程
This project forked from cbsheng/tinyhttpd
tinyhttpd的详细注释版,用于理解网络的连接过程
# TinyHttpd 本项目fork自 -> https://github.com/cbsheng/tinyhttpd 原版[README](./htdocs/readme_old.md) 这段代码是一个简单的Web服务器程序,它使用C语言编写。该程序创建一个基于TCP的服务器,监听指定的端口,接受客户端的连接,并处理客户端的HTTP请求。 以下是代码中的一些关键函数和概念: 1. `accept_request` 函数:当有客户端连接时,调用此函数来处理客户端的请求。它解析HTTP请求,包括请求方法(GET、POST等)、URL、查询字符串等,并根据请求的内容来执行相应的操作。 2. `serve_file` 函数:用于向客户端发送普通文件。它会读取文件内容,并通过套接字发送给客户端。 3. `execute_cgi` 函数:用于执行CGI脚本。它创建子进程来执行CGI脚本,并通过管道与子进程进行通信,将执行结果发送给客户端。 4. `startup` 函数:用于初始化服务器,包括创建套接字、绑定端口、监听连接等操作。 5. `get_line` 函数:用于从套接字中读取一行数据,包括处理换行符和回车符的情况。 6. `headers` 函数:用于发送HTTP响应头部信息给客户端。 7. `not_found` 函数:用于向客户端发送404未找到页面。 8. `unimplemented` 函数:用于向客户端发送501未实现页面。 此外,代码中还包括了一些错误处理函数,用于处理各种错误情况。 整体而言,这段代码实现了一个简单的多线程Web服务器,能够处理客户端的HTTP请求,并向客户端发送相应的数据。
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