fix: go2rtc live provider should work with non-proxied absolute URLs (#2724)

- Closes: #2719

src/components/live/providers/go2rtc/index.ts

@@ -43,7 +43,10 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
   @property({ attribute: true, type: Boolean })
   public controls = false;
 
+  // The player and the URL it is built for.
   private _player?: VideoRTC;
+  private _playerSource: string | null = null;
+
   private _hasLiveError = false;
 
   private _mediaPlayerController = new VideoMediaPlayerController(
@@ -52,22 +55,18 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
     () => this.controls,
   );
 
-  private _signedURLController = new SignedURLController(
-    this,
-    () => {
-      const endpoint = this.camera?.getEndpoints()?.go2rtc;
-      if (!this.hass || !endpoint) {
-        return {};
-      }
-      return {
-        hass: this.hass,
-        endpoint,
-        proxyConfig: this.camera?.getLiveProxyConfig(),
-        proxyEndpointOptions: { websocket: true },
-      };
-    },
-    () => this._createPlayer(),
-  );
+  private _signedURLController = new SignedURLController(this, () => {
+    const endpoint = this.camera?.getEndpoints()?.go2rtc;
+    if (!this.hass || !endpoint) {
+      return {};
+    }
+    return {
+      hass: this.hass,
+      endpoint,
+      proxyConfig: this.camera?.getLiveProxyConfig(),
+      proxyEndpointOptions: { websocket: true },
+    };
+  });
 
   public async getMediaPlayerController(): Promise<MediaPlayerController | null> {
     return this._mediaPlayerController;
@@ -92,15 +91,12 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
     // DISCONNECT_TIMEOUT.
     this._player?.reset();
     this._player = undefined;
+    this._playerSource = null;
   }
 
-  private _createPlayer(): void {
-    const src = this._signedURLController.getValue();
-    if (!src) {
-      return;
-    }
-
+  private _createPlayer(src: string): void {
     this._player = new VideoRTC();
+    this._playerSource = src;
     this._player.targetID = this.targetID ?? null;
     this._player.mediaPlayerController = this._mediaPlayerController;
     this._player.src = src;
@@ -111,14 +107,12 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
     if (cameraConfig?.go2rtc?.modes && cameraConfig.go2rtc.modes.length) {
       this._player.mode = cameraConfig.go2rtc.modes.join(',');
     }
-
-    this.requestUpdate();
   }
 
   protected willUpdate(changedProps: PropertyValues): void {
     if (changedProps.has('camera')) {
-      // Clear old player; the new one is created by the
-      // SignedURLController's valueChangeCallback once the URL resolves.
+      // Stop streaming the old camera immediately; `update` builds the new
+      // player as soon as that camera's URL is known.
       this._destroyPlayer();
     }
 
@@ -137,6 +131,21 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
     }
   }
 
+  // The signed URL controller announces only the URLs it resolves
+  // asynchronously, so the player is built from whatever URL it currently
+  // holds. Lit runs that controller's own update between `willUpdate` and
+  // `update`, so this overrides the latter.
+  protected update(changedProps: PropertyValues): void {
+    const src = this._signedURLController.getValue();
+    if (src !== this._playerSource) {
+      this._destroyPlayer();
+      if (src) {
+        this._createPlayer(src);
+      }
+    }
+    super.update(changedProps);
+  }
+
   protected render(): TemplateResult | void {
     const error = this._signedURLController.getError();
     if (error) {

tests/components/live/providers/go2rtc.browser.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from 'vitest';
+
+import type { VideoRTC } from '../../../../src/components/live/providers/go2rtc/video-rtc';
+import type { RawAdvancedCameraCardConfig } from '../../../../src/config/types';
+import { MountedCardFactory, type MountedCard } from '../../../browser/mounted-card';
+import { CAMERA_ENTITY, createGenericCameraHASS } from '../../../browser/test-utils';
+
+const PLAYER_SELECTOR = 'advanced-camera-card-live-go2rtc-player';
+
+const mount = async (camera: RawAdvancedCameraCardConfig): Promise<MountedCard> =>
+  await MountedCardFactory.createFromSource(
+    {
+      type: 'custom:advanced-camera-card',
+      cameras: [{ camera_entity: CAMERA_ENTITY, live_provider: 'go2rtc', ...camera }],
+      performance: { features: { card_loading_indicator: false } },
+    },
+    createGenericCameraHASS(),
+  );
+
+describe('AdvancedCameraCardGo2RTC', () => {
+  it('should play a go2rtc server that is reached without signing or proxying', async () => {
+    // An absolute URL is not Home Assistant's to sign, and proxying is off, so
+    // the stream URL needs no resolving at all.
+    const card = await mount({
+      go2rtc: { url: 'http://localhost:1984', stream: 'office' },
+      proxy: { live: false },
+    });
+
+    const player = await card.waitForSelector<VideoRTC>(PLAYER_SELECTOR);
+    expect(player.wsURL).toBe('ws://localhost:1984/api/ws?src=office');
+  });
+});