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Trigger WSClient Disconnect When WS Connection Closed #480

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davidvonthenen
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@davidvonthenen davidvonthenen commented Nov 4, 2024

Proposed changes

Addresses: #477

Should close websocket when server forces disconnect (when not using keepalive and not sending audio).

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  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
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Summary by CodeRabbit

  • New Features
    • Introduced a new method for handling graceful WebSocket connection closures.
  • Bug Fixes
    • Enhanced error handling for WebSocket connection closures, ensuring consistent exit signaling.
  • Refactor
    • Improved control flow and logging mechanisms related to connection closure processes.

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coderabbitai bot commented Nov 4, 2024

Walkthrough

The changes involve modifications to the AbstractAsyncWebSocketClient and AbstractSyncWebSocketClient classes in their respective files. A new method, _signal_exit, is introduced to handle WebSocket connection closures and manage the exit of listening threads. The _listening method in both classes is updated to call _signal_exit upon encountering specific connection closure exceptions. Additionally, the finish method in the async client is adjusted to always return True after handling a CancelledError, streamlining its return logic.

Changes

File Path Change Summary
deepgram/clients/common/v1/abstract_async_websocket.py Added _signal_exit method for handling WebSocket closure; updated _listening to call _signal_exit on connection closure exceptions; modified finish to always return True after handling CancelledError.
deepgram/clients/common/v1/abstract_sync_websocket.py Enhanced _listening method to call _signal_exit on ConnectionClosedOK and ConnectionClosed exceptions for improved error handling during connection closures.

Sequence Diagram(s)

sequenceDiagram
    participant Client as WebSocket Client
    participant Server as WebSocket Server
    participant Exit as Exit Handler

    Client->>Server: Establish Connection
    Client->>Client: Start Listening
    alt Connection Closed
        Client->>Exit: _signal_exit()
        Exit->>Server: Close Connection
        Exit->>Client: Cleanup Resources
    end
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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (1)
deepgram/clients/common/v1/abstract_sync_websocket.py (1)

268-270: LGTM: Proper cleanup for specific close codes

The addition of _signal_exit() for close codes 1000 (normal closure) and 1001 (going away) ensures proper cleanup in these specific scenarios. This is consistent with the ConnectionClosedOK handling and properly addresses the case where the connection is hanging on recv().

Consider enhancing the code comments to document the meaning of these specific close codes:

             if e.code in [1000, 1001]:
+                # 1000: Normal closure, meaning the purpose for which the connection was established has been fulfilled
+                # 1001: Going away, meaning the server is going down or the client is navigating away
                 # signal exit and close
                 self._signal_exit()
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between a840467 and 25fa3bd.

📒 Files selected for processing (2)
  • deepgram/clients/common/v1/abstract_async_websocket.py (2 hunks)
  • deepgram/clients/common/v1/abstract_sync_websocket.py (1 hunks)
🔇 Additional comments (4)
deepgram/clients/common/v1/abstract_sync_websocket.py (1)

259-261: LGTM: Proper cleanup on normal connection closure

The addition of _signal_exit() ensures proper cleanup of resources when the WebSocket connection is closed normally. This change aligns with the PR objective and follows consistent error handling patterns.

deepgram/clients/common/v1/abstract_async_websocket.py (3)

257-259: Properly signaling exit on ConnectionClosedOK exceptions

Adding await self._signal_exit() in the ConnectionClosedOK exception handler ensures that the WebSocket client gracefully handles normal closure events by signaling the exit and cleaning up resources appropriately.


266-268: Graceful shutdown on ConnectionClosed exceptions with codes 1000 and 1001

Including await self._signal_exit() when handling ConnectionClosed exceptions with codes 1000 and 1001 ensures that the client exits gracefully during expected disconnections, releasing resources as intended.


475-475: Consistent return value in finish method after handling CancelledError

Returning True after handling asyncio.CancelledError provides a consistent success indicator from the finish method, even when tasks are cancelled, aligning with the method's purpose.

@davidvonthenen davidvonthenen merged commit aff6110 into deepgram:main Nov 4, 2024
5 checks passed
@davidvonthenen davidvonthenen deleted the close-socket-on-server-termination branch November 4, 2024 17:24
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3 participants