server.send("def")
    clientListener.assertTextMessage("def")
    closeWebSockets(webSocket, server)
  }

  @Test
  @Throws(IOException::class)
  fun missingConnectionHeader() {
    webServer.enqueue(
      MockResponse
        .Builder()
        .code(101)
        .setHeader("Upgrade", "websocket")
        .setHeader("Sec-WebSocket-Accept", "ujmZX4KXZqjwy6vi1aQFH5p4Ygk=")