response: MockResponse,
  ) {
    val key = request.headers["Sec-WebSocket-Key"]
    val webSocketResponse =
      response
        .newBuilder()
        .setHeader("Sec-WebSocket-Accept", WebSocketProtocol.acceptHeader(key!!))
        .build()
    writeHttpResponse(socket, webSocketResponse)

    // Adapt the request and response into our Request and Response domain model.