WebSocket Deflate extension

The API is production ready, but may be slightly modified in a minor release. This is why it’s marked with the @ExperimentalWebSocketExtensionsApi annotation. If you want to use this API you need to OptIn:

If you want to leave your feedback or subscribe on updates, check KTOR-688 design issue.

Context takeover

Specify if the client (and server) should use compression window. Enabling these parameters reduce the amount of space allocated per single session. Please note that window size cannot be configured due to limitations of java.util.zip.Deflater API. The value is fixed to .

These parameters are described in RFC-7692 Section 7.1.1

Specify compress condition

All calls to compressIf will be evaluated before compression takes place.

Fine-tune list of protocols

The list of protocols to send can be edited as needed using the method: