WebRTC - getting 'malformed constraints object'

Question

I am using Chrome ans working on a webRTC application. I am getting an error 'malformed constraints object' in the createAnswer() for a session Description offer

pc.createAnswer(gotDescription, errorHandler, constraints);

I have tried all the options such as

constraints = {'mandatory': {
                'offerToReceiveAudio': true,
                'offerToReceiveVideo': true}};
constraints = {'offerToReceiveAudio': true,
           'offerToReceiveVideo': true};

and with both capital and small 'o' but still the same error.

Any suggestions?

Possible duplicate of [WebRTC - getting 'malformed constraints object' from Chrome but not Firefox](https://stackoverflow.com/questions/27830810/webrtc-getting-malformed-constraints-object-from-chrome-but-not-firefox) — Frederic Leitenberger, Aug 16 '18 at 18:56

score 3 · Accepted Answer · answered Apr 22 '16 at 16:00

3

It seems in the latest Specs, the audio/video offers are not required any more in RTCOfferOptions, so you may omit that unless you want to specify the iceRestart option which default is false.

http://w3c.github.io/webrtc-pc/#idl-def-RTCOfferOptions

pc.createAnswer(gotDescription, errorHandler);

answered Apr 22 '16 at 16:00

Gurpreet Sachdeva

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Bingo! I spent 2 hours in the trying the various options suggested in other posts. This worked. – St Koi Apr 22 '16 at 16:04
Mysteriously there is no clue of offerToReceiveAudio/Video at all anymore. Do they remove it entirely? – Luz Apr 25 '16 at 04:45
I probably found the reason for this error: https://stackoverflow.com/a/51883609/1520422 – Frederic Leitenberger Aug 16 '18 at 18:58

WebRTC - getting 'malformed constraints object'

1 Answers1