godot-start/doc/demo16_http/http.md

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# 1. Http网络请求
- 超文本传输协议Hyper Text Transfer ProtocolHTTP是一个简单的请求-响应协议它通常运行在TCP之上。
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HTTP是应用层协议同其他应用层协议一样是为了实现某一类具体应用的协议并由某一运行在用户空间的应用程序来实现其功能。
HTTP是一种协议规范这种规范记录在文档上为真正通过HTTP进行通信的HTTP的实现程序。
HTTP诞生之初主要是应用于WEB端内容获取那时候内容还不像现在这样丰富排版也没那么精美用户交互的场景几乎没有。
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