Merge pull request #1587 from pipecat-ai/improving_ice_servers

Updated `SmallWebRTCConnection` to support `ice_servers` with credentials.

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Updated `SmallWebRTCConnection` to support `ice_servers` with credentials.
+
 - Added `VADUserStartedSpeakingFrame` and `VADUserStoppedSpeakingFrame`,
   indicating when the VAD detected the user to start and stop speaking. These
   events are helpful when using smart turn detection, as the user's stop time

examples/foundational/run.py

@@ -20,7 +20,7 @@ from fastapi.responses import RedirectResponse
 from loguru import logger
 from pipecat_ai_small_webrtc_prebuilt.frontend import SmallWebRTCPrebuiltUI
 
-from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
+from pipecat.transports.network.webrtc_connection import IceServer, SmallWebRTCConnection
 
 # Load environment variables
 load_dotenv(override=True)
@@ -30,7 +30,11 @@ app = FastAPI()
 # Store connections by pc_id
 pcs_map: Dict[str, SmallWebRTCConnection] = {}
 
-ice_servers = ["stun:stun.l.google.com:19302"]
+ice_servers = [
+    IceServer(
+        urls="stun:stun.l.google.com:19302",
+    )
+]
 
 # Mount the frontend at /
 app.mount("/client", SmallWebRTCPrebuiltUI)

examples/p2p-webrtc/daily-interop-bridge/server.py

@@ -18,7 +18,7 @@ from fastapi.responses import RedirectResponse
 from loguru import logger
 from pipecat_ai_small_webrtc_prebuilt.frontend import SmallWebRTCPrebuiltUI
 
-from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
+from pipecat.transports.network.webrtc_connection import IceServer, SmallWebRTCConnection
 
 # Load environment variables
 load_dotenv(override=True)
@@ -28,7 +28,11 @@ app = FastAPI()
 # Store connections by pc_id
 pcs_map: Dict[str, SmallWebRTCConnection] = {}
 
-ice_servers = ["stun:stun.l.google.com:19302"]
+ice_servers = [
+    IceServer(
+        urls="stun:stun.l.google.com:19302",
+    )
+]
 
 # Mount the frontend at /
 app.mount("/prebuilt", SmallWebRTCPrebuiltUI)

examples/p2p-webrtc/video-transform/server/server.py

@@ -18,7 +18,7 @@ from fastapi.responses import RedirectResponse
 from loguru import logger
 from pipecat_ai_small_webrtc_prebuilt.frontend import SmallWebRTCPrebuiltUI
 
-from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
+from pipecat.transports.network.webrtc_connection import IceServer, SmallWebRTCConnection
 
 # Load environment variables
 load_dotenv(override=True)
@@ -28,7 +28,11 @@ app = FastAPI()
 # Store connections by pc_id
 pcs_map: Dict[str, SmallWebRTCConnection] = {}
 
-ice_servers = ["stun:stun.l.google.com:19302"]
+ice_servers = [
+    IceServer(
+        urls="stun:stun.l.google.com:19302",
+    )
+]
 
 # Mount the frontend at /
 app.mount("/prebuilt", SmallWebRTCPrebuiltUI)

examples/p2p-webrtc/voice-agent/server.py

@@ -17,7 +17,7 @@ from fastapi import BackgroundTasks, FastAPI
 from fastapi.responses import FileResponse
 from loguru import logger
 
-from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
+from pipecat.transports.network.webrtc_connection import IceServer, SmallWebRTCConnection
 
 # Load environment variables
 load_dotenv(override=True)
@@ -28,6 +28,13 @@ app = FastAPI()
 pcs_map: Dict[str, SmallWebRTCConnection] = {}
 
 
+ice_servers = [
+    IceServer(
+        urls="stun:stun.l.google.com:19302",
+    )
+]
+
+
 @app.post("/api/offer")
 async def offer(request: dict, background_tasks: BackgroundTasks):
     pc_id = request.get("pc_id")
@@ -37,7 +44,7 @@ async def offer(request: dict, background_tasks: BackgroundTasks):
         logger.info(f"Reusing existing connection for pc_id: {pc_id}")
         await pipecat_connection.renegotiate(sdp=request["sdp"], type=request["type"])
     else:
-        pipecat_connection = SmallWebRTCConnection()
+        pipecat_connection = SmallWebRTCConnection(ice_servers)
         await pipecat_connection.initialize(sdp=request["sdp"], type=request["type"])
 
         @pipecat_connection.event_handler("closed")

src/pipecat/transports/network/webrtc_connection.py

@@ -7,7 +7,7 @@
 import asyncio
 import json
 import time
-from typing import Any, Literal, Optional, Union
+from typing import Any, List, Literal, Optional, Union
 
 from av.frame import Frame
 from loguru import logger
@@ -87,13 +87,21 @@ class SmallWebRTCTrack:
         return getattr(self._track, name)
 
 
+# Alias so we don't need to expose RTCIceServer
+IceServer = RTCIceServer
+
+
 class SmallWebRTCConnection(BaseObject):
-    def __init__(self, ice_servers=None):
+    def __init__(self, ice_servers: Optional[Union[List[str], List[IceServer]]] = None):
         super().__init__()
-        if ice_servers:
+        if not ice_servers:
-            self.ice_servers = [RTCIceServer(urls=server) for server in ice_servers]
+            self.ice_servers: List[IceServer] = []
+        elif all(isinstance(s, IceServer) for s in ice_servers):
+            self.ice_servers = ice_servers
+        elif all(isinstance(s, str) for s in ice_servers):
+            self.ice_servers = [IceServer(urls=s) for s in ice_servers]
         else:
-            self.ice_servers = []
+            raise TypeError("ice_servers must be either List[str] or List[RTCIceServer]")
         self._connect_invoked = False
         self._track_map = {}
         self._track_getters = {