Connection keepalive

Overview

In real-time Text-to-Speech, there may be periods when you are not sending any text. To keep the session alive, send a keepalive control message:

{"keep_alive": true}

This keeps the WebSocket connection from being closed during idle periods.

When to use

Send keepalive messages whenever:

• You are not sending text for an extended period.
• You want to keep the WebSocket connection open between streams.

You can also send them on a fixed interval even while sending text.

Key points

• The keepalive message does not trigger Text-to-Speech generation and has no server-side effect other than maintaining the connection.
• Send a keepalive message every 20–30 seconds to prevent idle timeouts.