val trustManager = client.x509TrustManager!!

    val delegatingSocketFactory =
      object : DelegatingSSLSocketFactory(sslSocketFactory) {
        override fun configureSocket(sslSocket: SSLSocket): SSLSocket {
          return object : DelegatingSSLSocket(sslSocket) {
            override fun getApplicationProtocol(): String {
              throw UnsupportedOperationException()
            }