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WebRTC: Called with SDP without ice-ufrag and ice-pwd when setting Local SDP for an answer
Reported by
puneeth....@gmail.com,
May 27 2016
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36 Steps to reproduce the problem: 1. Make 1-1 audio Call 2. Accept the call 3. At terminating side upgrade the audio call to video call 4. After above method succeeded, downgrade the video call to audio call 5. After above method succeeded, again upgrade the audio call to video call 6. Now in terminating side after setting remote SDP and create answer, setting of Local SDP fails with error " Called with SDP without ice-ufrag and ice-pwd" 7. Observed that for video SDP there is no ice-ufrag and ice-pwd attribute What is the expected behavior? After triggering createAnswer the SDP should have ice-ufrag and ice-pwd for Video Line so that we can set local description What went wrong? Call upgrade from audio call to video call failed. Please find the attached SDP sequence of both originating side and terminating side Did this work before? No Chrome version: 50.0.2661.102 Channel: stable OS Version: 6.1 (Windows 7, Windows Server 2008 R2) Flash Version: Shockwave Flash 21.0 r0 I tested the scenario in chrome 46 version and in 52 canary version , result is same
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May 31 2016
Assigning to pthatcher, but I have a few questions for the original reporter: a) Do you have a test page that we can use to go through steps 1-5? b) Mostly out of curiosity, what's the use case for the multiple "upgrade" and "downgrad" flows?
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Jun 2 2016
a) Do you have a test page that we can use to go through steps 1-5? Not yet in public domain, I'll try creating one in codepen or similar website b) Mostly out of curiosity, what's the use case for the multiple "upgrade" and "downgrad" flows? This is one of our sanity test cases, assuming user might be triggering multiple upgrade , downgrade based on network connectivity. I too do it when I'm skyping to my distant friend while there is a jitters in our network connection.
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Jun 2 2016
Hi, Here is the test page link https://puneethrai.github.io/samples/src/content/peerconnection/upgrade-downgrade/index.html Although I couldn't reproduce the "Called with SDP without ice-ufrag and ice-pwd" since I need to further tune the software to collect all ice candidate and then send offer or answer. But with the test page above Proceed with two scenario Scenario 1) Uncheck "set video port 0 for Video line" option Make call then do couple couple of upgrade and downgrade In this scenario All works fine Scenario 2) Check "set video port 0 for Video line" option Make call then do upgrade -> downgrade -> upgrade (fails remote side no video). The difference between these to scenario is when doing downgrade we will be adding video port 0 according to (https://tools.ietf.org/html/rfc4317#page-17) and then set local SDP. This might the clue, but I'll further improve the code logic of the test page so that I can reproduce exception case which I reported.
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Mar 13 2018
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May 21 2018
I believe this was fixed by https://webrtc-review.googlesource.com/c/src/+/46380. Wasn't able to reproduce in M66. |
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Comment 1 by manoranj...@chromium.org
, May 27 2016