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Timo K.andClaude Fable 5.1
8638d4f159
Port of edf1feae from johannes/rtc-remote-publish onto the SDK split,
where
the MatrixRTC logic lives in sdk/ rather than src/state/CallViewModel/.
Where the original lands:
- getLocalTransport's remote fallback: the LiveKit backend's new
findRemotePublishTransport (sdk/src/media-backend/livekit/
RemotePublishTransport.ts), which tries the candidates from the
js-sdk's
getRemoteLivekitPublishCandidates oldest first and keeps the first
whose
homeserver issues a token with the publish grant.
discoverLocalTransport
asks the backend for it after the host's fallback, with a snapshot of
the
session's memberships from RTCParticipation, and throws
MatrixRTCTransportMissingError where that finds nothing too. Transport
discovery stays backend neutral: the MSC4195 token check is the
backend's.
- LocalMember's "no delegation on a remote SFU" and the custom
transport's
server_name: LivekitBackend.prepareLocalTransport locates the
transport on
the homeserver it names (serverNameOfTransport) and skips the
delegation
probe where that is not our own.
- SessionBehaviors' membership.getTransportServerName: the same helper
in
LivekitBackend.mediaFor.
- decodeSFUJWTPayload, SFUJWTPayload.video.canPublish and the exported
isCsApiUnavailable: sdk/src/media-backend/livekit/auth/.
- DeveloperSettingsTab, the widget capabilities, the locale string and
the
js-sdk pin (9405287c, 44.0.0): applied as is. The error boundary
snapshots follow the string.
Tests: the LocalTransport cases go to RemotePublishTransport.test.ts and
LocalTransport.test.ts, the LocalMember remote case and the
SessionBehaviors
server-name case to LivekitBackend.test.ts, plus the memberships
snapshot in
RTCParticipation.test.ts.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
28 lines
853 B
TypeScript
28 lines
853 B
TypeScript
/*
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Copyright 2026 Element Creations Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE in the repository root for full details.
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*/
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import { type Transport } from "matrix-js-sdk/lib/matrixrtc";
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/** The homeserver a Matrix user id belongs to: everything after the first colon. */
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export function serverNameOf(userId: string): string {
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return userId.replace(/^.*?:/, "");
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}
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/**
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* The homeserver that operates a transport: the one the transport names, else
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* the one of the member advertising it. A member publishing on another
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* homeserver's SFU (MSC4195) names that homeserver in `server_name`.
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*/
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export function serverNameOfTransport(
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transport: Transport,
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userId: string,
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): string {
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return typeof transport.server_name === "string"
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? transport.server_name
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: serverNameOf(userId);
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}
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