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<!doctype html>
<meta charset=utf-8>
<title>RTCRtpParameters encodings</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webrtc/dictionary-helper.js"></script>
<script src="/webrtc/RTCRtpParameters-helper.js"></script>
<script>
'use strict';
async function negotiate(pc1, pc2) {
const offer = await pc1.createOffer();
await pc1.setLocalDescription(offer);
await pc2.setRemoteDescription(offer);
const answer = await pc2.createAnswer();
await pc2.setLocalDescription(answer);
await pc1.setRemoteDescription(answer);
}
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('video');
const capabilities = transceiver.headerExtensionsToOffer;
let capability = capabilities.find((capability) => {
return capability.uri == "urn:ietf:params:rtp-hdrext:sdes:mid" &&
capability.direction != "stopped";
});
assert_not_equals(capability, undefined);
capability = capabilities.find((capability) => {
return capability.uri == "urn:3gpp:video-orientation" &&
capability.direction != "stopped";
});
assert_not_equals(capability, undefined);
}, `the video transceiver.headerExtensionsToOffer() includes mandatory extensions`);
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('audio');
const capabilities = transceiver.headerExtensionsToOffer;
let capability = capabilities.find((capability) => {
return capability.uri == "urn:ietf:params:rtp-hdrext:sdes:mid" &&
capability.direction != "stopped";
});
assert_not_equals(capability, undefined);
}, `the audio transceiver.headerExtensionsToOffer() includes mandatory extensions`);
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('audio');
const capabilities = transceiver.headerExtensionsToOffer;
capabilities[0].uri = "";
assert_throws_js(TypeError, () => {
transceiver.setOfferedRtpHeaderExtensions(capabilities);
}, 'transceiver should throw TypeError when setting an empty URI');
}, `setOfferedRtpHeaderExtensions throws TypeError on encountering missing URI`);
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('audio');
const capabilities = transceiver.headerExtensionsToOffer;
capabilities[0].uri = "4711";
assert_throws_dom("NotSupportedError", () => {
transceiver.setOfferedRtpHeaderExtensions(capabilities);
}, 'transceiver should throw NotSupported when setting an unknown URI');
}, `setOfferedRtpHeaderExtensions throws NotSupported on encountering unknown URI`);
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('audio');
const capabilities = transceiver.headerExtensionsToOffer;
let capability = capabilities.find((capability) => {
return capability.uri == "urn:ietf:params:rtp-hdrext:sdes:mid";
});
["sendonly", "recvonly", "inactive", "stopped"].map(direction => {
capability.direction = direction;
assert_throws_dom("InvalidModificationError", () => {
transceiver.setOfferedRtpHeaderExtensions(capabilities);
}, `transceiver should throw InvalidModificationError when setting a mandatory header extension\'s direction to ${direction}`);
});
}, `setOfferedRtpHeaderExtensions throws InvalidModificationError when setting a mandatory header extension\'s direction to something else than "sendrecv"`);
test(function(t) {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('audio');
let capabilities = transceiver.headerExtensionsToOffer;
let selected_capability = capabilities.find((capability) => {
return capability.direction == "sendrecv" &&
capability.uri != "urn:ietf:params:rtp-hdrext:sdes:mid";
});
selected_capability.direction = "stopped";
const offered_capabilities = transceiver.headerExtensionsToOffer;
let altered_capability = capabilities.find((capability) => {
return capability.uri == selected_capability.uri &&
capability.direction == "stopped";
});
assert_not_equals(altered_capability, undefined);
}, `modified direction set by setOfferedRtpHeaderExtensions is visible in headerExtensionsOffered`);
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('video');
const capabilities = transceiver.headerExtensionsToOffer;
const offer = await pc.createOffer();
const extmaps = offer
.sdp
.split("\n")
.filter(line => { return line.includes("a=extmap"); })
.join("\n");
for (const capability of capabilities) {
if (capability.direction == "stopped") {
assert_false(extmaps.includes(capability.uri));
} else {
assert_true(extmaps.includes(capability.uri));
}
}
}, `unstopped extensions turn up in offer`);
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver = pc.addTransceiver('video');
const capabilities = transceiver.headerExtensionsToOffer;
const selected_capability = capabilities.find((capability) => {
return capability.direction == "sendrecv" &&
capability.uri != "urn:ietf:params:rtp-hdrext:sdes:mid" &&
capability.uri != "urn:3gpp:video-orientation";
});
selected_capability.direction = "stopped";
transceiver.setOfferedRtpHeaderExtensions(capabilities);
const offer = await pc.createOffer();
const extmaps = offer
.sdp
.split("\n")
.filter(line => { return line.includes("a=extmap"); })
.join("\n");
for (const capability of capabilities) {
if (capability.direction == "stopped") {
assert_false(extmaps.includes(capability.uri));
} else {
assert_true(extmaps.includes(capability.uri));
}
}
}, `stopped extensions do not turn up in offers`);
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
// Disable a non-mandatory extension before first negotiation.
const transceiver = pc1.addTransceiver('video');
const capabilities = transceiver.headerExtensionsToOffer;
const selected_capability = capabilities.find((capability) => {
return capability.direction == "sendrecv" &&
capability.uri != "urn:ietf:params:rtp-hdrext:sdes:mid" &&
capability.uri != "urn:3gpp:video-orientation";
});
selected_capability.direction = "stopped";
transceiver.setOfferedRtpHeaderExtensions(capabilities);
await negotiate(pc1, pc2);
const negotiated_capabilites = transceiver.headerExtensionsNegotiated;
// Attempt enabling the extension.
selected_capability.direction = "sendrecv";
// The enabled extension should not be part of the negotiated set.
transceiver.setOfferedRtpHeaderExtensions(capabilities);
await negotiate(pc1, pc2);
assert_not_equals(
transceiver.headerExtensionsNegotiated.find(capability => {
return capability.uri == selected_capability.uri &&
capability.direction == "sendrecv";
}), undefined);
}, `the set of negotiated extensions grows with subsequent offers`);
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
// Disable a non-mandatory extension before first negotiation.
const transceiver = pc1.addTransceiver('video');
const capabilities = transceiver.headerExtensionsToOffer;
const selected_capability = capabilities.find((capability) => {
return capability.direction == "sendrecv" &&
capability.uri != "urn:ietf:params:rtp-hdrext:sdes:mid" &&
capability.uri != "urn:3gpp:video-orientation";
});
selected_capability.direction = "stopped";
transceiver.setOfferedRtpHeaderExtensions(capabilities);
await negotiate(pc1, pc2);
const negotiated_capabilites = transceiver.headerExtensionsNegotiated;
for (const capability of negotiated_capabilites) {
assert_not_equals(capabilities.find((cap) => {
return cap.uri == capability.uri && cap.direction != "stopped";
}), undefined);
}
for (const capability of capabilities) {
if (capability.direction != "stopped") {
assert_not_equals(negotiated_capabilites.find((cap) => {
return cap.uri == capability.uri;
}), undefined);
}
}
}, `the set of negotiated extensions is the set of unstopped extensions`);
</script>
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