rebroadcast: fix bug where packet length was parsed as signed integer.

common/src/rtsp-server.ts

@@ -109,7 +109,13 @@ export class RtspClient extends RtspBase {
     async request(method: string, headers?: Headers, path?: string, body?: Buffer) {
         headers = headers || {};
 
-        const line = `${method} ${this.url}${path || ''} RTSP/1.0`;
+        let fullUrl: string;
+        if (path)
+            fullUrl = new URL(path, this.url).toString();
+        else
+            fullUrl = this.url;
+
+        const line = `${method} ${fullUrl} RTSP/1.0`;
         headers['CSeq'] = (this.cseq++).toString();
         this.write(line, headers, body);
 

common/src/sdp-utils.ts

@@ -15,3 +15,22 @@ export function parsePayloadTypes(sdp: string) {
         videoPayloadTypes,
     }
 }
+
+function getTrackId(track: string) {
+    if (!track)
+        return;
+    const lines = track.split('\n').map(line => line.trim());
+    const control = lines.find(line => line.startsWith('a=control:'));
+    return control?.split('a=control:')?.[1];
+}
+
+export function parseTrackIds(sdp: string) {
+    const tracks = sdp.split('m=');
+
+    const audioTrack = tracks.find(track => track.startsWith('audio'));
+    const videoTrack = tracks.find(track => track.startsWith('video'));
+    return {
+        audio: getTrackId(audioTrack),
+        video: getTrackId(videoTrack),
+    };
+}