feat: passthrough Icecast metadata headers for RNS proxy

main.py

@@ -636,15 +636,18 @@ def iter_stream_transcode(target_url):
     finally:
         process.kill()
 
-def iter_stream(target_url):
-    import requests
-    with requests.get(target_url, stream=True, timeout=10) as r:
+def iter_stream(r):
+    try:
         for chunk in r.iter_content(chunk_size=8192):
             if chunk:
                 yield chunk
+    finally:
+        r.close()
+
+from fastapi import Request
 
 @app.get("/live/{station}")
-def live_stream_redirect(station: str, db: Session = Depends(db_session)):
+def live_stream_redirect(station: str, request: Request, db: Session = Depends(db_session)):
     # Usuwamy sztuczne rozszerzenia dodane dla Mopidy
     if station.endswith(".aac"):
         station = station[:-4]
@@ -664,7 +667,22 @@ def live_stream_redirect(station: str, db: Session = Depends(db_session)):
     elif station == "rns":
         config_url = db.query(Config).filter_by(key="rns_live_url").first()
         target_url = config_url.value if config_url else "https://stream.rcs.revma.com/4md4m0a0fs8uv"
-        return StreamingResponse(iter_stream(target_url), media_type="audio/mpeg")
+        
+        # Przekazujemy żądanie o metadane z odtwarzacza (Mopidy) do serwera (Revma)
+        req_headers = {}
+        if "icy-metadata" in request.headers:
+            req_headers["Icy-MetaData"] = request.headers["icy-metadata"]
+            
+        import requests
+        r = requests.get(target_url, stream=True, timeout=10, headers=req_headers)
+        
+        # Odbieramy nagłówki metadanych od Revmy i przekazujemy z powrotem do odtwarzacza
+        resp_headers = {}
+        for k, v in r.headers.items():
+            if k.lower().startswith("icy-"):
+                resp_headers[k] = v
+                
+        return StreamingResponse(iter_stream(r), media_type="audio/mpeg", headers=resp_headers)
         
     else:
         raise HTTPException(status_code=404, detail="Brak streamu dla podanej stacji")