HTTP 400 · Bad Request
HTTP 400 Calls / Voice / Video

When & why it happens

The app needs to retry joining the group call with a new SSRC value. Treated by gogram as a regular API error; inspect ErrResponseCode.Message for the exact code.

Handling in gogram

Surfaced as *gogram.ErrResponseCode. Match on the message:

if err, ok := err.(*gogram.ErrResponseCode); ok { if err.Message == "GROUPCALL_SSRC_DUPLICATE_MUCH" { // handle this error } }