feat: deal with error message for connection failures

Author: tomasliu-agora

realtime_agent/agent.py

@@ -11,7 +11,7 @@
 from agora_realtime_ai_api.rtc import Channel, ChatMessage, RtcEngine, RtcOptions
 
 from .logger import setup_logger
-from .realtime.struct import FunctionCallOutputItemParam, InputAudioBufferCommitted, InputAudioBufferSpeechStarted, InputAudioBufferSpeechStopped, InputAudioTranscription, ItemCreate, ItemCreated, ItemInputAudioTranscriptionCompleted, RateLimitsUpdated, ResponseAudioDelta, ResponseAudioDone, ResponseAudioTranscriptDelta, ResponseAudioTranscriptDone, ResponseContentPartAdded, ResponseContentPartDone, ResponseCreate, ResponseCreated, ResponseDone, ResponseFunctionCallArgumentsDelta, ResponseFunctionCallArgumentsDone, ResponseOutputItemAdded, ResponseOutputItemDone, ServerVADUpdateParams, SessionUpdate, SessionUpdateParams, SessionUpdated, Voices, to_json
+from .realtime.struct import ErrorMessage, FunctionCallOutputItemParam, InputAudioBufferCommitted, InputAudioBufferSpeechStarted, InputAudioBufferSpeechStopped, InputAudioTranscription, ItemCreate, ItemCreated, ItemInputAudioTranscriptionCompleted, RateLimitsUpdated, ResponseAudioDelta, ResponseAudioDone, ResponseAudioTranscriptDelta, ResponseAudioTranscriptDone, ResponseContentPartAdded, ResponseContentPartDone, ResponseCreate, ResponseCreated, ResponseDone, ResponseFunctionCallArgumentsDelta, ResponseFunctionCallArgumentsDone, ResponseOutputItemAdded, ResponseOutputItemDone, ServerVADUpdateParams, SessionUpdate, SessionUpdateParams, SessionUpdated, Voices, to_json
 from .realtime.connection import RealtimeApiConnection
 from .tools import ClientToolCallResponse, ToolContext
 from .utils import PCMWriter
@@ -109,9 +109,14 @@ async def setup_and_run_agent(
 
                 start_session_message = await anext(connection.listen())
                 # assert isinstance(start_session_message, messages.StartSession)
-                logger.info(
-                    f"Session started: {start_session_message.session.id} model: {start_session_message.session.model}"
-                )
+                if isinstance(start_session_message, SessionUpdated):
+                    logger.info(
+                        f"Session started: {start_session_message.session.id} model: {start_session_message.session.model}"
+                    )
+                elif isinstance(start_session_message, ErrorMessage):
+                    logger.info(
+                        f"Error: {start_session_message.error}"
+                    )
 
                 agent = cls(
                     connection=connection,