Arduino GSM library - can't change the TCP port about gsm

[agdl]

From @brezinapeto on February 26, 2016 8:19

What I did in my GSM libraries :

void GSM3MobileServerService::stop()
{

    // Review, should be the server?
    /*theGSM3MobileClientProvider->disconnectTCP(local1Remote0, mySocket);
    if(flags & GSM3MOBILESERVERSERVICE_SYNCH)
        waitForAnswer();
    theGSM3MobileClientProvider->releaseSocket(mySocket);*/
    theGSM3MobileServerProvider->disconnectTCPServer(mySocket); //PBR modification
    if(flags & GSM3MOBILESERVERSERVICE_SYNCH)
        waitForAnswer();
    theGSM3MobileClientProvider->releaseSocket(mySocket);
    mySocket = -1;
}

//Disconnect Server main function.   PBR modification
int GSM3ShieldV1ServerProvider::disconnectTCPServer(uint8_t socket)
{
    // id Socket does not really mean anything, in this case we have
    // only one socket running
    theGSM3ShieldV1ModemCore.openCommand(this,DISCONNECTTCP);

    // If we are not closed, launch the command
//[ZZ]  if(theGSM3ShieldV1ModemCore.getStatus()==TRANSPARENT_CONNECTED)
//  {
        delay(1000);
        theGSM3ShieldV1ModemCore.print("+++");
        delay(1000);
        theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("AT+QISRVC=2"));//PBR modification
        theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("AT+QICLOSE"));
        theGSM3ShieldV1ModemCore.setStatus(GPRS_READY);
//  }
    // Looks like it runs everytime, so we simply flush to death and go on
    do
    {
        // Empty the local buffer, and tell the modem to XON
        // If meanwhile we receive a DISCONNECT we should detect it as URC.
        theGSM3ShieldV1ModemCore.theBuffer().flush();
        theGSM3ShieldV1ModemCore.gss.spaceAvailable();
        // Give some time for the buffer to refill
        delay(100);
        theGSM3ShieldV1ModemCore.closeCommand(1);
    }while(theGSM3ShieldV1ModemCore.theBuffer().storedBytes()>0);

    theGSM3ShieldV1ModemCore.unRegisterUMProvider(this);
    return theGSM3ShieldV1ModemCore.getCommandError();
}