[GitHub] [tomcat] gksxodnd007 opened a new pull request, #579: Add activateDropConnection config to choose drop connection by http status code

[via GitHub]

gksxodnd007 opened a new pull request, #579:
URL: https://github.com/apache/tomcat/pull/579

   when response http status code is `400, 408, 411, 413, 414, 500, 501, 503`, 
the connecton is closed by tomcat even though that is keep-alive. undertow and 
jetty and netty don't close keep-alive connection unlike tomcat. i believe that 
it can be optional feature.
   
   + our service run on kubernetes and we use istio as service mesh. so tomcat 
only connects to sidecar. we don't need to frequently close the connection for 
easily load balancing or other reason.
   
   the first image is before remove statusDropsConnection method, and the 
second image is after that.
   (upstream connection count means creating new connection count)
   <img width="1843" alt="image" 
src="https://user-images.githubusercontent.com/27043428/216298213-473d96bb-ac64-4129-a7ae-3304b835a0fa.png";>
   
   <img width="1838" alt="image" 
src="https://user-images.githubusercontent.com/27043428/216298292-9e00b5d4-70c0-4fe9-8bf7-791b17ce3018.png";>
   
   


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