Auth not working properly since Autobahn websocket server

[reinzor]

Expected Behavior

Authentication should work with multiple clients.

Actual Behavior

When multiple clients set-up an auth connection, at some point the auth service is not called and the client is not authenticated. When running the authenticated websocket server separately, it seems that it hangs and does not respond on any incoming connections.

Steps to Reproduce the Problem

1. Start websocket server with authentication
2. Open auth connection with client 1
3. Open auth connection with client 2
4. Refresh pages of clients a couple of times

I could only reproduce this when the system is under some load. With a simple set-up, this does not occur.

Specifications

• ROS Version (MELODIC):
• OS Version (Ubuntu 18.04 LTS):
• Rosbridge Version (3b375b23a4bc36cdc0d79fab8914def77951ded4):
• Twisted Version ([Twisted, version 17.9.0]):

[mvollrath]

@reinzor I can't find documentation about how to run the authenticate service, can you point me at some information so I can try to repro this?

[reinzor]

This is indeed not properly documented (maybe we should add some documentation in the rosbridge aswell).

Rosauth package doc: http://wiki.ros.org/rosauth

then call the authenticate method on the roslibjs ROS connection instance:

http://robotwebtools.org/jsdoc/roslibjs/current/Ros.html#authenticate

[reinzor]

However, after more testing, it seems to hang only under heavy load so maybe this might be related to #425

[mvollrath]

@reinzor is this still an issue?

[reinzor]

Yes, for now I reduced the bandwidth and it seems to work fine but for high loads, authentication seems to fail for some reason. It seems that something is "hanging".

[mvollrath]

I tried to repro this but couldn't get it to auth properly under normal conditions. I'm happy to debug this when there's documentation on how to set it up.

[mvollrath]

You might find this works better with #464

[reinzor]

We will try this out! Thanks

[reinzor]

Seemed to be coupled to #425 , no longer deserves a separate issue.