push

fun ApplicationCall.push(pathAndQuery: String): Unit
fun ApplicationCall.push(
    encodedPath: String,
    parameters: Parameters
): Unit

Produces HTTP/2 push from server to client or sets HTTP/1.x hint header or does nothing. Exact behaviour is up to engine implementation.

fun ApplicationCall.push(
    block: ResponsePushBuilder.() -> Unit
): Unit

Produces HTTP/2 push from server to client or sets HTTP/1.x hint header or does nothing (may call or not call block). Exact behaviour is up to engine implementation.