Check which of the specified source IDs the server still recognizes as joined to a group call. This method can be used with all group call types, see here » for more info.
After joining the main connection with phone.joinGroupCall, pass its non-zero SSRC/source ID to this method periodically. If a presentation connection is also active, include the separate source registered using phone.joinGroupCallPresentation.
The method returns the subset of the supplied sources that are still joined. A missing source means that the corresponding connection must be recreated and joined again; it does not indicate whether media packets are currently flowing. If the method returns GROUPCALL_JOIN_MISSING, the main connection must be rejoined.
Method schema is available as of layer 129. Switch »
| Name | Type | Description |
|---|---|---|
| call | InputGroupCall | Group call whose WebRTC connections should be checked |
| sources | Vector<int> | Non-zero SSRC/source IDs of the caller's main and presentation connections |
| Code | Type | Description |
|---|---|---|
| 400 | GROUPCALL_INVALID | The specified group call is invalid. |
| 400 | GROUPCALL_JOIN_MISSING | You haven't joined this group call. |
How to start, join and manage group calls and video chats.
Join any group call type ». Conference calls additionally require the E2E joining flow ».
The params field must contain a join payload generated by the local tgcalls group-call engine. It contains a random non-zero audio ssrc, ICE ufrag and pwd, DTLS fingerprints, and, when publishing video, ssrc-groups.
For example, a join payload without published video has the following shape:
{
"ssrc": 123456789,
"ufrag": "...",
"pwd": "...",
"fingerprints": [{
"hash": "sha-256",
"fingerprint": "...",
"setup": "passive"
}]
}
When joining an RTMP-mode call, generate the payload without published video source groups.
Start screen sharing in a non-RTMP video chat/livestream or conference. Presentations are not supported in live stories or RTMP-mode video chats/livestreams, see here » for more info.