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Status Under review
Workspace DataPower Gateway
Created by Guest
Created on Aug 24, 2022

Add a "Maximum persistent reuse" parameter for the backside of an MPGW or WSP

On an MPGW or a WSP, I want to be able to configure that the persistent backside connection should be closed after X amount of requests have been sent through that connection. I can already do this for the frontside by setting the "Maximum persistent reuse" setting in the HTTP(S) listener. But when a connection is closed by the server, it introduces sporadic errors due to the race condition described here: https://www.ibm.com/support/pages/node/1285660

So to avoid the race condition, it should be the client instead of the server that closes the connection. For this we will need the "Maximum persistent reuse" option added for backside persistent connections.

The reason we want all TCP connections to be closed after X amount of reuses is to allow graceful shutdown of backend connections. If the client (in this case DataPower) keeps the TCP connection open, then the server cannot gracefully shutdown the HTTP(S) service without introducing the race conditon mentioned earlier.

Idea priority High