"Authentication error" pop up Upon start or restarting the windows veyon service an "Authentication error" pop up is shown (on windows). The reason for this pop up is the GET /authentication/ command which we use as a ping. The pop up is only shown once for a host but "Authentication failed for ..." is logged every second for each ping command in the veyon log on windows. How to reproduce: - Open the computerroom with a windows client - Restart the veyon service on the windows client - The message should now pop up Relevant files: veyon: server/src/ComputerControlServer.cpp (For the error message) ucs@school: ucs-school-veyon-client/veyon_client/client.py (ping command)
Another customer effected Ticket 2022121221000259
Created attachment 11025 [details] Check port The upstream developer suggested checking the port directly instead. For an example see the attached patch. But at least in my test, even just opening the port already resulted in an error on the windows machine. Due to time constrains I didn't investigate that any further. Maybe port 11400 (also used by veyon) can be used or I just did something wrong? Note: We do not use an authenticated call because that might be cached by the veyon proxy.
Fixed with commit c90b196c18cb1d00a8d3e9214327a91d8fca6274 Package: ucs-school-veyon-client Version: 2.0.9 We now use a direct TCP/IP socket connection with the Veyon Server on the client computers to determine the aliveness of them. This does not trigger the pop up anymore.
What I tested: lsof shows less connections -> OK No more auth popup after restarting veyon on windows -> OK No tracebacks/crashes if veyon is down -> OK update thread is paused and restarts -> OK After starting veyon again computer information is updated again as well -> OK
Errata updates for UCS@school 5.0 v6 have been released. https://docs.software-univention.de/ucsschool-changelog/5.0v6/en/changelog.html https://docs.software-univention.de/ucsschool-changelog/5.0v6/de/changelog.html If this error occurs again, please clone this bug.