Called in wrong state: kStable

[Erik Dvorčák]

Hello,

I facing with issue about sessionDescriptionHandler, can you advice me, whats going wrong? Its not every time its more rare like reguraly but it's serious problem. 

I'am using SIP.js 0.15.10 (Web/SessionDescriptionHandler)

Error:

InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable

logger: console

arguments: [{

"message":"Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable",

"name":"InvalidStateError",

"stack":"Error: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable"

}]

SESSION_DESCRIPTION_HANDLER_ERROR: Error with Session Description Handler

logger: console

arguments: [{

"code":8,

"name":"SESSION_DESCRIPTION_HANDLER_ERROR",

"method":"setDescription",

"error":"[object DOMException]",

"message":"Error with Session Description Handler",

"type":27,

"stack":"SESSION_DESCRIPTION_HANDLER_ERROR: Error with Session Description Handler\n at t [as constructor] 

....}]

thanks

Erik

[Eric Green]

Upgrade to 0.17.X please.

[Erik Dvorčák]

Hello, I upgraded to last version. 

Error is still there and I found the case when it's happening.

Sorry I cannot have access for copy the trace (I would have to rewrite it manually) .. But I tried describe every step preciously

onProgressFunction (which I use to setup early media) -> https://gist.github.com/7c37c3bdbe03ec12ae0433b85cd81ba5.git

Is it bug? or bad implementation?

Flow: 

// IMPORTANT INFO: ALL steps below was logged in the same time 18:11:11 (I think the problem is in fast (immediately) income of 200 w/SDP after 183 w/SDP)

received 183 (with SDP)

Inviter.onProgress

sdh.hasDescription

sdh.setDescription

sdh.getLocalMediaStream

sdh.applyModifiers

sdh.setRemoteSessionDescription

received 200 (with SDP)

State change to "Accepted" on INVITE client transaction with id z9hG4bK5237512

Inviter.onAccept

sdh.hasDescription

sdh.setDescription

sdh.getLocalMediaStream

sdh.applyModifiers

sdh.setRemoteSessionDescription

sdh.oniceconnectionstatechange checking

sdh.ontrack audio enabled

sdh.setRemoteTrack

sdh.setRemoteTrack - adding remote audio track

sdh.onsignalingstatechange stable

sdh.setDescription failed - InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable

sdh.setAnswer: SDH setDescription rejected...

sip.Inviter | Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote answer sdp: Called in wrong state: kStable

Erik

Dátum: pondelok 28. septembra 2020, čas: 11:35:33 UTC+2, odosielateľ: Eric Green

[Eric Green]

The problem is that you are manually setting SDP in your onProgressFunction. So this is what I believe is happening.

-> Invite (SDP)  - getLocalDescription. state hasLocalOffer.

<- 18X Progress (SDP) - setRemoteDescription. state stable.

<- 200 OK (SDP) - setRemoteDescription. error!!

Do not call setDescription in the progress callback. Use SIP.js built in support for early media.

[Erik Dvorčák]

Thank you!

Dátum: štvrtok 5. novembra 2020, čas: 11:02:53 UTC+1, odosielateľ: Eric Green

[Ghanshyam Katriya]

Hello Erik,

Can you guide me how did you handled early media with newer version?

[Slavik Bialik]

Ghanshyam Katriya ,  If you are talking about enabling early media on outbound calls, so just set it like that:

var inviterOptions: InviterOptions = {

earlyMedia: true

}

var inviter = new Inviter(userAgent, target, inviterOptions);

inviter.invite();

[Ghanshyam Katriya]

I see documentation of onaddtrack in this link https://github.com/onsip/SIP.js/blob/master/docs/session-description-handler.md but SessionDescriptionHandler is available in Established state only. How did you managed addTrack event and capture streams before Established session?