val connectionSpec = connectionSpecs[tlsEquipPlan.connectionSpecIndex]

        // Figure out the next connection spec in case we need a retry.
        retryTlsConnection = tlsEquipPlan.nextConnectionSpec(connectionSpecs, sslSocket)

        connectionSpec.apply(sslSocket, isFallback = tlsEquipPlan.isTlsFallback)
        connectTls(sslSocket, connectionSpec)
        user.secureConnectEnd(handshake)
      } else {

    assertThat(attempt0.isTlsFallback).isFalse()
    connectionSpecs[attempt0.connectionSpecIndex].apply(socket, attempt0.isTlsFallback)
    assertEnabledProtocols(socket, TlsVersion.TLS_1_2)
    val attempt1 = attempt0.nextConnectionSpec(connectionSpecs, socket)
    assertThat(attempt1).isNotNull()
    assertThat(attempt1!!.isTlsFallback).isTrue()
    socket.close()

    // COMPATIBLE_TLS is used here.