2

We've recently configured a new Cluster with the following configuration:

 www.mydomain.com | APACHE + MOD_JK (AJP) Load Balancer / \ Tomcat1 Tomcat2

All the requests are made through HTTPS and the two tomcat instances are using SessionReplication via DeltaManager.

The cluster and all the wep-apps are working just fine.

Now one of these webapps requires the use of WebSockets with WSS:// protocol and i'm getting this exception

java.lang.UnsupportedOperationException: HTTP upgrade is not supported by this protocol

Has anyone ever a clue on what is causing this ?

Improve this question

2 Answers 2

Reset to default
1

You need to install mod_proxy_wstunnel apache module.

Improve this answer
2
  • so now we are using mod_jk and should migrate to a mod_proxy clustering solution ? Will mod_proxy handle be able to load balance also the WSS:// requests ? Commented Oct 16, 2017 at 12:40
  • moved configuration to mod_proxy and all seems to work fine, thanks Commented Mar 16, 2018 at 10:32
3

As discussed on the tomcat-users mailing list: "[...] the AJP protocol does not support upgrading to other protocols (e.g. websocket, HTTP/2)."

This means you'd have to use some other method of proxying these connections to your Tomcat instances. As Tux_DEV_NULL mentioned you could use mod_proxy_wstunnel for this.

Improve this answer

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.