watson_developer_cloud.websocket.recognize_listener module

class RecognizeListener(audio_source, options, callback, url, headers, http_proxy_host=None, http_proxy_port=None)

Bases: object

classmethod build_start_message(options)

classmethod build_closing_message()

classmethod extract_transcripts(alternatives)

send(data, opcode=1)

Send message to server.

data: message to send. If you set opcode to OPCODE_TEXT,

data must be utf-8 string or unicode.

opcode: operation code of data. default is OPCODE_TEXT.

send_audio(ws)

Stream audio to server

Parameters:ws – Websocket client

on_open(ws)

Callback executed when a connection is opened to the server. Handles streaming of audio to the server.

Parameters:ws – Websocket client

on_data(ws, message, message_type, fin)

Callback executed when message is received from the server.

Parameters:

• ws – Websocket client
• message – utf-8 string which we get from the server.
• message_type – Message type which is either ABNF.OPCODE_TEXT or ABNF.OPCODE_BINARY
• fin – continue flag. If 0, the data continues.

on_error(ws, error)

Callback executed when an error is received

Parameters:

• ws – Websocket client
• error – Exception object

on_close(ws)

Callback executed when websocket connection is closed

Parameters:ws – Websocket client