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Workaround to avoid "Failed to execute 'setHeaderExtensionsToNegotiate'" #396

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Merged
ibc merged 1 commit into from
Oct 21, 2026
Merged

Workaround to avoid "Failed to execute 'setHeaderExtensionsToNegotiate'" #396

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18 changes: 17 additions & 1 deletion src/handlers/ortc/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,17 @@ import type {

const logger = new Logger('ortc/utils');

/**
* RTP header extensions that are mandatory to negotiate (since BUNDLE is always
* offered) and hence cannot be disabled via the RTP header extension control
* API.
*
* @see https://www.rfc-editor.org/rfc/rfc8834#name-header-extensions
*/
const MandatoryRtpExtensionUris: Set<RtpHeaderExtensionUri> = new Set([
'urn:ietf:params:rtp-hdrext:sdes:mid',
]);

/**
* This function adds RTCP NACK support for OPUS codec in given capabilities.
*/
Expand Down Expand Up @@ -75,7 +86,12 @@ export function applyForcedRtpExtensions(
const uri = extenCap.uri as RtpHeaderExtensionUri;
const enabled: boolean | undefined = forcedRtpExtensions[uri];

if (enabled === true) {
// NOTE: This is a workaround to avoid a potential bug in libwebrtc:
// - https://github.com/versatica/mediasoup-client/issues/394
// - https://issues.webrtc.org/issues/576082210
if (MandatoryRtpExtensionUris.has(uri)) {
extenCap.direction = 'sendrecv';
} else if (enabled === true) {
extenCap.direction = 'sendrecv';
} else if (enabled === false) {
extenCap.direction = 'stopped';
Expand Down
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