计算机网络作业五

Assignment 5: When the flow begins to flow~

1. use tools like wireshark and fiddler to tap and analyze the traffic when your PC browser,mobile phone browser and corresponding APP open a website such as taobao.cn,jd.com, pinduoduo.com and more (or any interesting websites/APPs), what versions of HTTP protocols do they use? Would they use different HTTP version for different scenarios?

2. illustrate the loading and rendering sequence of these websites, try explain their strategy to improve user experience 3. find out what information these website gather from your PC and mobile phone. How do you feel? 4.Analyze the cryptographic systems used by these websites/APPs, what do they sign,verify, encrypt and decrypt?

任务 5:当流开始流~

1. 使用wireshark、fiddler 等工具，在你的PC浏览器、手机浏览器和相应的APP打开淘宝、京东、拼多多等网站(或任何有趣的网站/APP)时，对流量进行挖掘和分析，他们使用的是什么版本的HTTP协议?他们会在不同的场景下使用不同的HTTP版本吗?

2. 说明这些网站的加载和渲染顺序，尝试解释他们的策略，以提高用户体验。

3. 看看这些网站从你的电脑和手机上收集了什么信息。你感觉怎么样?

4. 分析这些网站/应用程序使用的加密系统，他们签署，验证，加密和解密什么?