This looks to be related to this issue as well. I do not know exactly when it was introduced as we went from 1.7.9 to 1.8.3 last Friday.
https://www.mail-archive.com/haproxy@formilux.org/msg28721.html Erik Larson Server Administrator Linux Systems & Web Arizona State University | University Technology Office e.lar...@asu.edu<mailto:e.lar...@asu.edu> ________________________________ From: Erik Larson Sent: Friday, February 9, 2018 8:50:30 AM To: haproxy@formilux.org Subject: Session cookie insert not being sent Hello all, We have a backend that uses 4 MS_NET servers. Ee insert a persistence cookie for the session via haproxy. In 1.8.3 it appears the session cookie is no longer being sent or is being lost in the 300 responses. I've downgraded the farm to 1.7.9 for the time being. Conf: Check-HAProxy\r\nConnection:\ close\r\n cookie ASUSESSION insert indirect nocache httponly secure domain .asu.edu [cid:a20dcd54-de03-420b-bb2a-161223355087] Erik SR Server Administrator Linux Systems & Web Arizona State University | University Technology Office