ting-xu commented on issue #5654:
URL: https://github.com/apache/apisix/issues/5654#issuecomment-1004550815


   > ok, I've had a look around and I don't think it's a bug.
   > 
   > Nginx will escape the `" ", "#", "%", "&", "+", "?"` and the `%00-%1F` and 
`%7F-%FF` to follow rfc3986#section-2.2.
   > 
   > so I recommend not using %3C in the uri.
   > 
   > refer to: https://juejin.cn/post/6844903512485134343#heading-5
   > 
   > cc @tokers
   
   > 
   > No this is not, we already managed to strip the route prefix by using the 
regex.
   > 
   > The issue is the gateway server decoding the route and not encoding it 
again, what I want is when submitting this request `$curl 
http://127.0.0.1:9080/api/groups/%3CNumber%3E`
   > 
   > I need to get this
   > 
   > `uri: /groups/%3CNumber%3E`
   > 
   > NOT that: `uri: /groups/<Number>`
   
   I think it's a bug.
   
   I also had this issue when using apisix to route request to backend gerrit 
code-review server.
   The JS in browser will send request like 
http://gerrit.server/changes/repo-group%2Freop-name~100/detail?O=....
   when apisix forward to gerrit, it becomes 
http://gerrit.server/changes/repo-group/reop-name~100/detail?O=....
   cause gerrit cannot handle correctly and return 404
   
   Instead, when I use nginx to route, things are ok, the %2F is not auto 
decoded and keep original.
   


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