Forum Discussion

Robert_47833's avatar
Robert_47833
Icon for Altostratus rankAltostratus
Jul 22, 2015

disable irule process for the request not for the whole tcp connection

hi ,Iurle I need to stop irule process for the exact http request ,not for the whole tcp connection ,how to achieve this?  
application delivery
design
LTM
  • Kiozs_131042's avatar
    Kiozs_131042
    Jul 26, 2015

    Understood this topic is discussing some race conditions applied on iRule http events;

    client 1 --> http request1 --> F5 --> http request1 --> server
client 1 --> http request2 --> F5 --> http request2 --> server
client 1 --> http request3 --> F5 --> http request3 --> server
client 1 <-- http request1 <-- F5 <-- http response1 <-- server
client 1 <-- http request2 <-- F5 <-- http response2 <-- server
client 1 <-- http request3 <-- F5 <-- http response3 <-- server

    From LTM perspective, LTM will not process the subsequent request (but rather put it on the request queue instead)until first response is back from backend pool memeber.

    Even pipelining is enabled on client side and multiple requests come in at same time, LTM will still serialize them and process them according to the sequence (FIFO).

    So in our case, variable has been set in request 1 will not be messed up even request 2 comes in earlier than response 1.

Robert_47833's avatar
Robert_47833
Icon for Altostratus rankAltostratus
Jul 25, 2015

for example : when http response1 is not arrives, http request 2 arrives,then request 2 may set the variable to another value ,which I don't want to happen.becasue http response 1 still need to use variable set in http request 1. I am not sure how multiple http requests are sent in one tcp connection. If http request 2 is send after http response 1 is send back to client ,it will not cause issue