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Add credentialed TURN server handling and update RTC configuration to gather direct, STUN, and TURN candidates. Enhance peer connection management with new credentials parameter.

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This commit is contained in:
Xin Wang
2026-07-21 23:42:28 +08:00
parent cdecc25bb7
commit e3e68e8ea1
1 changed files with 31 additions and 4 deletions
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35
www/js/main.js
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@@ -14,9 +14,8 @@
const $self = { const $self = {
rtcConfig: { rtcConfig: {
// WebRTC has no "STUN-only" transport policy. Using `all` with only // Gather direct, STUN, and TURN candidates. ICE prefers direct/STUN
// STUN servers configured allows host and server-reflexive candidates, // candidate pairs and falls back to TURN when those checks fail.
// while ensuring that no TURN relay candidate can be created.
iceTransportPolicy: 'all', iceTransportPolicy: 'all',
iceServers: [ iceServers: [
{ urls: 'stun:stun.l.google.com:19302' }, { urls: 'stun:stun.l.google.com:19302' },
@@ -629,10 +628,15 @@ function handleScConnect() {
console.log(`Self ID: ${$self.id}`); console.log(`Self ID: ${$self.id}`);
} }
function handleScConnectedPeers({ peers }) { function handleScConnectedPeers({ peers, credentials }) {
const ids = peers; const ids = peers;
console.log(`Connected peer IDs: ${ids.join(', ')}`); console.log(`Connected peer IDs: ${ids.join(', ')}`);
addCredentialedTurnServer([
'turn:182.92.86.220:3478?transport=udp',
'turn:182.92.86.220:3478?transport=tcp',
], credentials);
for (let id of ids) { for (let id of ids) {
if (id === $self.id) continue; if (id === $self.id) continue;
// be polite with already-connected peers // be polite with already-connected peers
@@ -736,6 +740,29 @@ async function handleScSignal({ sender,
* Utility Functions * Utility Functions
*/ */
function addCredentialedTurnServer(server_urls, { username, password }) {
// Add TURN after the STUN entries. ICE will still gather all candidate
// types, but direct and server-reflexive pairs have higher priority than
// relayed pairs under the standard ICE candidate priority rules.
const turn_server = {
urls: server_urls,
username: username,
credential: password,
};
const existing_index = $self.rtcConfig.iceServers.findIndex(server =>
Array.isArray(server.urls)
&& server.urls.some(url => server_urls.includes(url)));
// Refresh the expiring credentials when the signaling channel reconnects
// instead of accumulating duplicate TURN entries.
if (existing_index >= 0) {
$self.rtcConfig.iceServers[existing_index] = turn_server;
} else {
$self.rtcConfig.iceServers.push(turn_server);
}
}
function prepareNamespace(hash, set_location) { function prepareNamespace(hash, set_location) {
let ns = hash.replace(/^#/, ''); // remove # from the hash let ns = hash.replace(/^#/, ''); // remove # from the hash
if (/^[a-z]{4}-[a-z]{4}-[a-z]{4}$/.test(ns)) { if (/^[a-z]{4}-[a-z]{4}-[a-z]{4}$/.test(ns)) {