<!doctype html> <meta charset=utf-8> <title>RTCPeerConnection.prototype.setRemoteDescription - legacy streams without a=msid lines</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script> 'use strict'; const FINGERPRINT_SHA256 = '00:00:00:00:00:00:00:00:00:00:00:00:00' + ':00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00'; const ICEUFRAG = 'someufrag'; const ICEPWD = 'somelongpwdwithenoughrandomness'; const SDP_BOILERPLATE = 'v=0\r\n' + 'o=- 166855176514521964 2 IN IP4 127.0.0.1\r\n' + 's=-\r\n' + 't=0 0\r\n'; const MINIMAL_AUDIO_MLINE = 'm=audio 9 UDP/TLS/RTP/SAVPF 111\r\n' + 'c=IN IP4 0.0.0.0\r\n' + 'a=rtcp:9 IN IP4 0.0.0.0\r\n' + 'a=ice-ufrag:' + ICEUFRAG + '\r\n' + 'a=ice-pwd:' + ICEPWD + '\r\n' + 'a=fingerprint:sha-256 ' + FINGERPRINT_SHA256 + '\r\n' + 'a=setup:actpass\r\n' + 'a=mid:0\r\n' + 'a=sendrecv\r\n' + 'a=rtcp-mux\r\n' + 'a=rtcp-rsize\r\n' + 'a=rtpmap:111 opus/48000/2\r\n'; promise_test(async t => { const pc = new RTCPeerConnection(); t.add_cleanup(() => pc.close()); const haveOntrack = new Promise(r => pc.ontrack = r); await pc.setRemoteDescription({type: 'offer', sdp: SDP_BOILERPLATE + MINIMAL_AUDIO_MLINE}); assert_equals((await haveOntrack).streams.length, 1); }, 'setRemoteDescription with an SDP without a=msid lines triggers ontrack with a default stream.'); </script>