The JTEL chat server implementation is based on the websocket protocol. The JTEL chat server ClientMessenger is used to implement chat channel between ACD Agent and Client.
Same Origin Policy
There is a limitation by using wss protocol described in Same-Origin-Policy (https://de.wikipedia.org/wiki/Same-Origin-Policy)
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Reference Implementation
See JTEL chat integration in Bitbucket
Haproxy configuration to bypass same origin policy
frontend ft_web
bind 10.42.22.32:8080 name http
maxconn 10000
acl PATH_portal path_beg -i /CarrierPortal
acl PATH_chat path_beg -i /gui /ws /rest /chatInit /upload /download
use_backend bk_web if PATH_portal
use_backend bk_cm if PATH_chat
default_backend bk_web
backend bk_cm
balance roundrobin
server websrv1 10.42.22.31:3000 maxconn 10000 weight 10 cookie websrv1 check
backend bk_web
balance roundrobin
server websrv1 10.42.22.32:8081 maxconn 10000 weight 10 cookie websrv1 check