Update app.py

app.py

@@ -1,10 +1,15 @@
 import time
+import os
 import numpy as np
 import gradio as gr
 import random
 
 from fastrtc import AdditionalOutputs, WebRTC, ReplyOnPause
 
+hf_token = os.getenv("TOKEN")
+async def get_credentials():
+    return await get_cloudflare_turn_credentials_async(hf_token=TOKEN)
+
 possible_responses = [
     "hello",
     "hi",
@@ -39,19 +44,10 @@ with gr.Blocks() as demo:
         with gr.Column():
             audio = WebRTC(
                 label="Stream",
-                mode="send",
+                mode="send-receive",
                 modality="audio",
-                rtc_configuration={
-                    "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}],
-                    "iceTransportPolicy": "all",
-                    "iceCandidatePoolSize": 10,
-                    "bundlePolicy": "max-bundle",
-                    "rtcpMuxPolicy": "require",
-                    "sdpSemantics": "unified-plan",
-                },
-                server_rtc_configuration={
-                    "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]
-                },
+                rtc_configuration=get_credentials,
+                server_rtc_configuration=get_cloudflare_turn_credentials(ttl=360_000),
             )
         with gr.Column():
             transcript = gr.Chatbot(label="transcript", type="messages")