Tomcat error, loss of Real-Time Message

[khoward]

We are running v11.0p_2016-03-31/PowerEdition Deployment with Real-Time Messaging. Apache httpd 2.2 is being used as a proxy in front of Tomcat 6.0.24. We've noticed warning messages in the Tomcat log that state:

Nov 13, 2017 4:51:30 PM org.apache.jk.common.ChannelSocket processConnection
WARNING: processCallbacks status 2

This coincides with messages from the server which are not being received by the client. From what I can gather, the warning message above corresponds to a "text/event-stream" request from the browser known as Server-Sent Events.

I am not sure if this has any bearing on the loss of messages but was wondering if you had any opinion on this.

[khoward]

Additionally I wanted to ask if there is a way to use the Real-Time Messaging module that does not rely on Server Sent Events?

[Isomorphic]

We just recently fixed a bug that could cause data loss if data was being delivered at the moment that the connection is torn down and re-created, so you should update to the latest patched version and re-test.

The protocol used is carefully chosen per-browser to work around the different bugs and limitations with each platform, so it's not configurable. What alternate protocol did you want to use, on which browser, and why?