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p Command Packet / p Command Response Packet

The p command packet and p command response packet are paired concepts, but the p command response packet is returned only when an error occurs on the server side. As long as no p command response packet indicating an error is returned, the client can continue sending voice data using p command packets as needed.

p Command Packet​

Sends voice data.

Format​

Type: BINARY

p<audio_data>

<audio_data> is the voice data in the audio format specified by the s command at the start of the session. This voice data is prefixed with 0x70 (ASCII code for 'p') and sent as a binary frame.

The speech recognition server processes the received voice data sequentially, detects the start and end of utterances, and returns real-time interim and final recognition results for each utterance segment. The speech recognition server continues to process the received voice data and return results until it receives an e command packet from the client or until a session timeout set on the server side occurs.

p Command Response Packet​

Sent from the server to the client in response to the p command.

Format​

Type: TEXT

Response Packet on Success​

There is no specific response indicating successful transmission.

Response Packet on Transmission Failure​

p <error_message>

If the server fails to process the p command, an error message is returned after 'p' separated by a single space.

Error Messages​

Client Errors​

These are errors originating from the client. Please remove the cause and retry from the s command request.

Error MessageDescription
p received unsupported audio formatThe sent voice data is in an unsupported audio format. Please check the audio format specified in the s command and the data sent with the p command.

Errors Due to Limitations​

These occur when limitations are violated. Please retry from the s command request.

Error MessageDescription
p can't feed audio data to recognizer serverVoice data was sent when the speech recognition server was not in a state to receive audio. This occurs when the forced disconnection time due to non-speech intervals limitation is exceeded. It can also occur rarely due to congestion in the underlying system.
p session timeout occurredA session timeout has occurred. This happens when the maximum session time limitation is exceeded. The server has initiated the disconnection process.