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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var sdputils = {
checkSdpAfterEndOfTrickle: function(sdp, testOptions, label) {
info("EOC-SDP: " + JSON.stringify(sdp));
ok(sdp.sdp.includes("a=end-of-candidates"), label + ": SDP contains end-of-candidates");
sdputils.checkSdpCLineNotDefault(sdp.sdp, label);
if (testOptions.rtcpmux) {
ok(sdp.sdp.includes("a=rtcp-mux"), label + ": SDP contains rtcp-mux");
} else {
ok(sdp.sdp.includes("a=rtcp:"), label + ": SDP contains rtcp port");
}
},
// takes sdp in string form (or possibly a fragment, say an m-section), and
// verifies that the default 0.0.0.0 addr is not present.
checkSdpCLineNotDefault: function(sdpStr, label) {
info("CLINE-NO-DEFAULT-ADDR-SDP: " + JSON.stringify(sdpStr));
ok(!sdpStr.includes("c=IN IP4 0.0.0.0"), label + ": SDP contains non-zero IP c line");
},
// Note, we don't bother removing the fmtp lines, which makes a good test
// for some SDP parsing issues. It would be good to have a "removeAllButCodec(sdp, codec)" too.
removeCodec: function(sdp, codec) {
var updated_sdp = sdp.replace(new RegExp("a=rtpmap:" + codec + ".*\\/90000\\r\\n",""),"");
updated_sdp = updated_sdp.replace(new RegExp("(RTP\\/SAVPF.*)( " + codec + ")(.*\\r\\n)",""),"$1$3");
updated_sdp = updated_sdp.replace(new RegExp("a=rtcp-fb:" + codec + " nack\\r\\n",""),"");
updated_sdp = updated_sdp.replace(new RegExp("a=rtcp-fb:" + codec + " nack pli\\r\\n",""),"");
updated_sdp = updated_sdp.replace(new RegExp("a=rtcp-fb:" + codec + " ccm fir\\r\\n",""),"");
return updated_sdp;
},
removeRtcpMux: function(sdp) {
return sdp.replace(/a=rtcp-mux\r\n/g,"");
},
removeBundle: function(sdp) {
return sdp.replace(/a=group:BUNDLE .*\r\n/g, "");
},
reduceAudioMLineToPcmuPcma: function(sdp) {
return sdp.replace(/m=audio .*\r\n/g, "m=audio 9 UDP/TLS/RTP/SAVPF 0 8\r\n");
},
setAllMsectionsInactive: function(sdp) {
return sdp.replace(/\r\na=sendrecv/g, "\r\na=inactive")
.replace(/\r\na=sendonly/g, "\r\na=inactive")
.replace(/\r\na=recvonly/g, "\r\na=inactive");
},
removeAllRtpMaps: function(sdp) {
return sdp.replace(/a=rtpmap:.*\r\n/g, "");
},
reduceAudioMLineToDynamicPtAndOpus: function(sdp) {
return sdp.replace(/m=audio .*\r\n/g, "m=audio 9 UDP/TLS/RTP/SAVPF 101 109\r\n");
},
transferSimulcastProperties: function(offer_sdp, answer_sdp) {
if (!offer_sdp.includes("a=simulcast:")) {
return answer_sdp;
}
var o_simul = offer_sdp.match(/simulcast: send rid=(.*)([\n$])*/i);
var o_rids = offer_sdp.match(/a=rid:(.*)/ig);
var new_answer_sdp = answer_sdp + "a=simulcast: recv rid=" + o_simul[1] + "\r\n";
o_rids.forEach((o_rid) => {
new_answer_sdp = new_answer_sdp + o_rid.replace(/send/, "recv") + "\r\n";
});
return new_answer_sdp;
},
verifySdp: function(desc, expectedType, offerConstraintsList, offerOptions,
testOptions) {
info("Examining this SessionDescription: " + JSON.stringify(desc));
info("offerConstraintsList: " + JSON.stringify(offerConstraintsList));
info("offerOptions: " + JSON.stringify(offerOptions));
ok(desc, "SessionDescription is not null");
is(desc.type, expectedType, "SessionDescription type is " + expectedType);
ok(desc.sdp.length > 10, "SessionDescription body length is plausible");
ok(desc.sdp.includes("a=ice-ufrag"), "ICE username is present in SDP");
ok(desc.sdp.includes("a=ice-pwd"), "ICE password is present in SDP");
ok(desc.sdp.includes("a=fingerprint"), "ICE fingerprint is present in SDP");
//TODO: update this for loopback support bug 1027350
ok(!desc.sdp.includes(LOOPBACK_ADDR), "loopback interface is absent from SDP");
var requiresTrickleIce = !desc.sdp.includes("a=candidate");
if (requiresTrickleIce) {
info("No ICE candidate in SDP -> requiring trickle ICE");
} else {
info("at least one ICE candidate is present in SDP");
}
//TODO: how can we check for absence/presence of m=application?
var audioTracks =
sdputils.countTracksInConstraint('audio', offerConstraintsList) ||
((offerOptions && offerOptions.offerToReceiveAudio) ? 1 : 0);
info("expected audio tracks: " + audioTracks);
if (audioTracks == 0) {
ok(!desc.sdp.includes("m=audio"), "audio m-line is absent from SDP");
} else {
ok(desc.sdp.includes("m=audio"), "audio m-line is present in SDP");
is(testOptions.opus, desc.sdp.includes("a=rtpmap:109 opus/48000/2"), "OPUS codec is present in SDP");
//TODO: ideally the rtcp-mux should be for the m=audio, and not just
// anywhere in the SDP (JS SDP parser bug 1045429)
is(testOptions.rtcpmux, desc.sdp.includes("a=rtcp-mux"), "RTCP Mux is offered in SDP");
}
var videoTracks =
sdputils.countTracksInConstraint('video', offerConstraintsList) ||
((offerOptions && offerOptions.offerToReceiveVideo) ? 1 : 0);
info("expected video tracks: " + videoTracks);
if (videoTracks == 0) {
ok(!desc.sdp.includes("m=video"), "video m-line is absent from SDP");
} else {
ok(desc.sdp.includes("m=video"), "video m-line is present in SDP");
if (testOptions.h264) {
ok(desc.sdp.includes("a=rtpmap:126 H264/90000"), "H.264 codec is present in SDP");
} else {
ok(desc.sdp.includes("a=rtpmap:120 VP8/90000") ||
desc.sdp.includes("a=rtpmap:121 VP9/90000"), "VP8 or VP9 codec is present in SDP");
}
is(testOptions.rtcpmux, desc.sdp.includes("a=rtcp-mux"), "RTCP Mux is offered in SDP");
}
return requiresTrickleIce;
},
/**
* Counts the amount of audio tracks in a given media constraint.
*
* @param constraints
* The contraint to be examined.
*/
countTracksInConstraint: function(type, constraints) {
if (!Array.isArray(constraints)) {
return 0;
}
return constraints.reduce((sum, c) => sum + (c[type] ? 1 : 0), 0);
},
};
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