[squid-users] sourcehash load balance

[André Janna]

I set up a Squid proxy that forwards all requests to 2 parent caches. 
I'm using Squid version 3.5.19.
My goal is that multiple connection from a client to a server should be 
forwarded to the same parent, so that the server see all requests coming 
from the same IP address.

I'm using the following configuration:
cache_peer squid1 parent 3128 0 no-query sourcehash
cache_peer squid2 parent 3128 0 no-query sourcehash
never_direct allow all

Looking at access.log some requests are tagged as CLOSEST_PARENT instead 
of SOURCEHASH_PARENT, so it seams that Squid is not always using source 
hash rule to forward requests to parent caches.
For instance:
1477046954.047   3882 10.11.2.4 TCP_TUNNEL/200 21935 CONNECT 
sso.cisco.com:443 - SOURCEHASH_PARENT/10.0.33.12 -
1477046968.056     21 10.11.2.4 TCP_MISS/200 1012 POST 
http://ocsp.digicert.com/ - CLOSEST_PARENT/10.0.33.13 
application/ocsp-response
1477047782.038     22 10.11.2.4 TCP_MISS/204 307 GET 
http://clients1.google.com/generate_204 - SOURCEHASH_PARENT/10.0.33.12 -
1477047782.045    181 10.11.2.4 TCP_MISS/200 745 GET 
http://tags.bluekai.com/site/2964? - CLOSEST_PARENT/10.0.33.13 image/gif

So requests from the same client are not sent to the same parent cache.
How can I force Squid to always use source hash parent selection method?


Regards,
André Janna