Call connection painfully slow

Delta Chat version

Latest and 2 version prior on android / grapheneos

Expected behavior

Call come and connect nearly instantly.

Actual behavior

Call take a massive amount of time to pass from “connecting” to “connected” (no VPN used for the test).

Steps to reproduce the problem

  1. Receive a call
  2. Answer

Here i would like to know if it’s a known issue on some relay or in the app / os, so i can detect and cause (slow relay in my list or something) and fix it.

Sounds like this has to do with the TURN candidate not getting gathered (apart from the fact that our signaling protocol doesn’t support more than 1 message per side). See the diagram.

Do you mind sharing which server you’re using, and, if possible, sharing the logs?

Possible workaround: use another another server or contact admins to check if their TURN server is working.

Thanks i will try to change my relay this weekend, i will update here with the relay server and the logs, if it fail.