webSocketRaw

suspend fun HttpClient.webSocketRaw(
    method: HttpMethod = HttpMethod.Get,
    host: String = "localhost",
    port: Int = DEFAULT_PORT,
    path: String = "/",
    request: HttpRequestBuilder.() -> Unit = {},
    block: suspend ClientWebSocketSession.() -> Unit
): Unit

Create raw ClientWebSocketSession: no ping-pong and other service messages are used.