Method _unmask

gunicorn/asgi/websocket.py:365–370

Unmask WebSocket payload data.

(self, payload, masking_key)

        return data

    def _unmask(self, payload, masking_key):
        """Unmask WebSocket payload data."""
        if not payload:
            return payload
        # XOR each byte with corresponding mask byte
        return bytes(b ^ masking_key[i % 4] for i, b in enumerate(payload))

    async def _handle_close(self, payload):
        """Handle incoming close frame."""