[1.x] Does AudioBridge supports multiple participant join from RTP in a single room . Getting Already in a room Error for 2nd participant

[keremcadirci]

What version of Janus is this happening on?
Janus version: 1202 (1.2.2)
Janus commit: a0175e8

Have you tested a more recent version of Janus too?
No

Was this working before?
I don't know

Is there a gdb or libasan trace of the issue?
Please find full log at https://gist.github.com/keremcadirci/f4ea619dcc458f80c299182665258b92

Additional context
I need to connect multiple SIP audio only sessions into a single audiobridge room.
I'm trying to do with join message including rtp

1. I am able to create audiobridge room ✔️

{"body":{"request":"create","room":6846789519213138,"description":"6846789519213138","secret":"12345","pin":"12345","permanent":false,"is_private":true,"record":true,"allow_rtp_participants":true},"janus":"message","transaction":"638477021698641580"}

2. I am able to join first RTP participant ✔️
   Request:

{"body":{"request":"join","room":6846789519213138,"pin":"12345","id":6669739804561543,"group":"unknown","muted":false,"codec":"pcma","rtp":{"ip":"192.168.12.186","port":20070,"payload_type":8}},"janus":"message","transaction":"638477021699804608"}

Response:

   "janus": "event",
   "session_id": 934176806834367,
   "transaction": "638477021699804608",
   "sender": 3049123928170642,
   "plugindata": {
      "plugin": "janus.plugin.audiobridge",
      "data": {
         "audiobridge": "joined",
         "room": 6846789519213138,
         "id": 6669739804561543,
         "participants": [],
         "rtp": {
            "ip": "192.168.12.92",
            "port": 10000,
            "payload_type": 8

3. I can't join second participant from rtp ❌
   Request:

{"body":{"request":"join","room":6846789519213138,"pin":"12345","id":2645901459177423,"group":"unknown","muted":false,"codec":"pcma","rtp":{"ip":"192.168.20.202","port":7078,"payload_type":8}},"janus":"message","transaction":"638477021990851334"}

Response:

   "janus": "event",
   "session_id": 934176806834367,
   "transaction": "638477021990851334",
   "sender": 3049123928170642,
   "plugindata": {
      "plugin": "janus.plugin.audiobridge",
      "data": {
         "audiobridge": "event",
         "error_code": 491,
         "error": "Already in a room (use changeroom to join another one)"

4. First SIP RTP Session remains connected to room, I am able to connect to the room from WebRTC ✔️
   Request:

{"janus":"message","body":{"request":"join","room":6846789519213138,"pin":"12345","display":"kerem","suspended":false},"transaction":"e7VYqDL12k2E"}

Response:

      "janus": "event",
      "session_id": 6895538789230000,
      "transaction": "e7VYqDL12k2E",
      "sender": 5432833973896208,
      "plugindata": {
         "plugin": "janus.plugin.audiobridge",
         "data": {
            "audiobridge": "joined",
            "room": 6846789519213138,
            "id": 5306941280937977,
            "participants": []

5. In addition participant list shows none of RTP stream participants: ❌

  "janus": "success",
  "session_id": 6377906324251837,
  "transaction": "ZHlxuVvY27",
  "sender": 4420750652201167,
  "plugindata": {
    "plugin": "janus.plugin.audiobridge",
    "data": {
      "audiobridge": "participants",
      "room": 6846789519213138,
      "participants": [
        {
          "id": 5306941280937977,
          "display": "kerem",
          "setup": true,
          "muted": false,
          "talking": false

[atoppi]

You need to use a different plugin handle for a second participant.

[lminiero]

Please use the group for further questions on this, we only use GitHub for code issues.

[keremcadirci]

Thank you @atoppi 2nd participant is OK