fun connectViaProxyUsingProxyArg() {
    testConnectViaProxy(ProxyConfig.CREATE_ARG)
  }

  @Test
  fun connectViaProxyUsingProxySystemProperty() {
    testConnectViaProxy(ProxyConfig.PROXY_SYSTEM_PROPERTY)
  }

  @Test
  fun connectViaProxyUsingHttpProxySystemProperty() {
    testConnectViaProxy(ProxyConfig.HTTP_PROXY_SYSTEM_PROPERTY)
  }

  private fun testConnectViaProxy(proxyConfig: ProxyConfig) {