Max retries exceeded with url，Connection to elective.pku.edu.cn timed out #43
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现在还会遇到吗? 用浏览器直接访问有问题? 有没有用代理之类的? |
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您好，是的，用校内网访问频次过高，持续一段时间后就会出现该问题，然后该电脑就无法访问elective，门户等均正常访问。只有断wifi断开全部连接重连才可重新访问。后挂国内、外科学测试，则一直不会被封。因此猜测只有校内频繁访问的ip会被封，这个问题可能在您的程序上不太好解决（自行查的python爬虫被封的解决方案有keep alive 改close 和扩大user agent 池等，但本人水平十分有限，不了解）
…---Original---
From: "Rabbit"<[email protected]>
Date: Tue, Sep 22, 2020 10:20 AM
To: "zhongxinghong/PKUAutoElective"<[email protected]>;
Cc: "oopsg1thub"<[email protected]>;"Author"<[email protected]>;
Subject: Re: [zhongxinghong/PKUAutoElective] Max retries exceeded with url，Connection to elective.pku.edu.cn timed out (#43)
现在还会遇到吗? 用浏览器直接访问有问题? 有没有用代理之类的?
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这其实我有察觉到，选课网近期有 IP 级别的限流，好像还是在应用层以下的限流，至于是否只对校内 IP 限流我目前还不是很清楚，但是更换一下 IP 似乎就可以继续用了 |
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是的，校内被封频率的阈值还有待我测试，目前似乎只能用校外ip挂机。与程序无涉，感谢！
…---Original---
From: "Rabbit"<[email protected]>
Date: Tue, Sep 22, 2020 11:06 AM
To: "zhongxinghong/PKUAutoElective"<[email protected]>;
Cc: "oopsg1thub"<[email protected]>;"Author"<[email protected]>;
Subject: Re: [zhongxinghong/PKUAutoElective] Max retries exceeded with url，Connection to elective.pku.edu.cn timed out (#43)
这其实我有察觉到，选课网近期有 IP 级别的限流，好像还是在应用层以下的限流，至于是否只对校内 IP 限流我目前还不是很清楚，但是更换一下 IP 似乎就可以继续用了
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Check List
Version / Environment
System infomation: [ ] ( Windows10 64bit ... )
Python version: [ ] ( run
python3 --version)AutoElective version: [ ] ( run
python3 main.py --version)Config
除了学号/密码外的其他配置
Issue Description
What
遇到的问题
开启一段时间后，逐渐出现Max retries exceeded with url...错误，猜测requests高频率访问访问同一个ip而出现。出现后浏览器都打不开elective，其他网站正常。只能断开WIFI断开its所有连接并重连（猜测ip被禁，需要重连更换）。不知是否个案。
Console Log
[ERROR] loop.error, 20:39:47, HTTPSConnectionPool(host='elective.pku.edu.cn', port=443): Max retries exceeded with url: /elective2008/edu/pku/stu/elective/controller/supplement/SupplyCancel.do (Caused by ConnectTimeoutError(<urllib3.connection.VerifiedHTTPSConnection object at 0x000002E282DE68E0>, 'Connection to elective.pku.edu.cn timed out. (connect timeout=20.0)'))
其中，重复出现的错误信息一般“0x0...”部分不同
必要的终端输出信息
Reproduce
如有必要，提供复现的步骤
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