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microsoft / MixedReality-WebRTC

MixedReality-WebRTC is a collection of components to help mixed reality app developers integrate audio and video real-time communication into their application and improve their collaborative experience
https://microsoft.github.io/MixedReality-WebRTC/
MIT License
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Why IP address in o= and c= fields in SDP message are 127.0.0.1 and 0.0.0.0 correspondingly? #757

Open securigy opened 3 years ago

securigy commented 3 years ago

Describe the bug According to RFC the above fields need to have IP address (?). The o= should have a some kind of name (?) How the other peer supposed to know where the offer from and whether to accept it or reject it?

Here is what I send when I do it according to MS example for C# Desktop. Sent: sdp offer v=0 o=- 3519846937705024719 2 IN IP4 127.0.0.1 s=- t=0 0 a=group:BUNDLE 0 a=msid-semantic: WMS m=application 9 DTLS/SCTP 5000 c=IN IP4 0.0.0.0 a=ice-ufrag:3Nxd a=ice-pwd:8YO1xh5l47dSgl4jk+DB81Jm a=ice-options:trickle a=fingerprint:sha-256 5A:32:BE:C5:5D:E9:31:20:3C:5F:B3:8F:6C:EC:A1:62:FC:73:61:B6:02:D0:55:3E:8C:7B:D1:A6:56:B9:EC:41 a=setup:actpass a=mid:0 a=sctpmap:5000 webrtc-datachannel 1024

To Reproduce Run the C# Library for Desktop Example

Expected behavior IP addresses in the above fierlds

SDP messages offer v=0 o=- 3519846937705024719 2 IN IP4 127.0.0.1 s=- t=0 0 a=group:BUNDLE 0 a=msid-semantic: WMS m=application 9 DTLS/SCTP 5000 c=IN IP4 0.0.0.0 a=ice-ufrag:3Nxd a=ice-pwd:8YO1xh5l47dSgl4jk+DB81Jm a=ice-options:trickle a=fingerprint:sha-256 5A:32:BE:C5:5D:E9:31:20:3C:5F:B3:8F:6C:EC:A1:62:FC:73:61:B6:02:D0:55:3E:8C:7B:D1:A6:56:B9:EC:41 a=setup:actpass a=mid:0 a=sctpmap:5000 webrtc-datachannel 1024

Screenshots If applicable, add screenshots to help explain your problem.

Environment Windows 10 Pro. VS2019, .NET Core 3.1 - all according to the MS Guide for WinRTC.

Additional context