31950: Stream - Protocol - Malformed Message

Twilio couldn't decode a message sent on the Media Streams WebSocket connection. Twilio sends this warning once per Stream.

• Your WebSocket server sent a message in binary format.
• Your application sent raw audio bytes directly over the WebSocket instead of sending a text message that matches the Media Streams message format.

• Send Media Streams messages as text WebSocket messages. Do not use binary frames.
• If you send audio to Twilio on a bidirectional Stream, send a media message with a media.payload value instead of sending raw binary audio.
• Encode audio in media.payload as base64 audio/x-mulaw audio at 8000 Hz.
• Review the supported WebSocket message formats for media, mark, and clear messages.

• Media Streams WebSocket messages
• Media Streams overview
• TwiML Voice: <Stream>