Sending and receiving SMS using your dongle

I've almost forgotten I had a blog :|

I had to keep the following somewhere other than my memory since I know how unreliable it is.

There was a need to send and receive SMS for an app and people were wondering if we need to buy a separate GSM modem for that. Easier solution was to use a dongle (which is, well, basically a GSM modem J )

After a little research I thought of using SMSLib as recommended by many folks on internet. (http://smslib.org/)

SMSLib is a SMS messaging library. As mentioned in their home page two SMSLib versions currently available. The old, stable v3.x and the newer v4. SMSLib v4 is under development.

I used smslib-3.5.4.jar.

Downloads can be found at http://smslib.org/download/. Some of the paths given for artifacts in installation directory are not working, so I used the downloads page.

Used

• HUAWEI Mobile HSPA+ dongle
• Win64
• smslib-3.5.4
• java 7

1. Plug in dongle to USB port and find port number (Control Panel -> Device Manage -> Ports) It was COM11 in my case

2. Add RXTXcomm library as mentioned below

3. Create a sample java project and add smslib-3.5.4.jar in lib

4. Run the following java code. (Update port)

import org.smslib.*;
import org.smslib.modem.SerialModemGateway;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;


public class SmsSenderReceiver {

    public void sendMessage() throws Exception {

        SerialModemGateway gateway = new SerialModemGateway("", "COM11", 9600, "", "");
        gateway.setInbound(true);
        gateway.setOutbound(true);

        OutboundNotification outboundNotification = new OutboundNotification();
        InboundNotification inboundNotification = new InboundNotification();

        Service service = Service.getInstance();
        service.setOutboundMessageNotification(outboundNotification);
        service.setInboundMessageNotification(inboundNotification);
        service.addGateway(gateway);
        service.startService();

        OutboundMessage msg = new OutboundMessage("0722452122", "test111");
        service.sendMessage(msg);
    }

    public class InboundNotification implements IInboundMessageNotification {
        @Override
//Get triggered when a SMS is received
        public void process(AGateway gateway, Message.MessageTypes messageTypes, InboundMessage inboundMessage) {

            System.out.println(inboundMessage);
            try {
                gateway.deleteMessage(inboundMessage);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public class OutboundNotification implements IOutboundMessageNotification {

//Get triggered when a SMS is sent
        public void process(AGateway gateway, OutboundMessage outboundMessage) {
            System.out.println(outboundMessage);
        }
    }

    public static void main(String args[]) {
        SmsSenderReceiver app = new SmsSenderReceiver();
        try {
            app.sendMessage();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

A prerequisite of using SMSLib is having Java Communications library as mentioned in http://smslib.org/doc/installation/.

They list two options

1.  Win32 :-> Java Comm v2

2.  For others :-> Java Comm v3 or RxTx

Java Comm didn't work for me. Use RxTx.

linux 32bit, 64 bit, Win32 : http://rxtx.qbang.org/pub/rxtx/rxtx-2.1-7-bins-r2.zip

Win64 : https://bitbucket.org/jlauer/mfz-cdn/downloads/mfz-rxtx-2.2-20081207-win-x64.zip

(Above are found at http://smslib.org/download/)

File RXTXcomm.jar should go under JDKDIR/jre/lib/ext/

The necessary library (e.g.the librxtxSerial.so) should go under JDKDIR/jre/bin/

In Linux

Tried to do the same in Linux environment, but unfortunately I kept receiving NoSuchPortException.

Tailed /var/log/messages to view updates.

Device was first identified as "usb-storage". usb_modeswitch was used

usb_modeswitch -H -v 0x12d1 -p 0x1506

View changes.

lsusb

View the port numbers and their permissions. Can see the ports that are mapped to GSM modem.

ls /dev/tty* -l

Added read write permissions

chmod o+rw /dev/ttyUSB*

chmod o+rw /dev/ttyS*

Can use minicom to see if the dongle is functioning as expected.

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver

Exception in thread "Thread-3" java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path

               at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1886)

librxtxSerial.so had to be added to JDKDIR/jre/lib/amd64 instead of  JDKDIR/jre/bin/ to solve the above.

As suggested in http://smslib.org/doc/smslib/troubleshooting/ added the soft links to something resembling a standard serial port.

ln -s /dev/ttyUSB_utps_diag /dev/ttyS20

ln -s /dev/ttyUSB_utps_modem /dev/ttyS21

ln -s /dev/ttyUSB_utps_pcui /dev/ttyS23

The above hack and more useful infor can be found at http://rxtx.qbang.org/wiki/index.php/Trouble_shooting too.

View "How does rxtx detect ports? Can I override it?" Section.

Kept on getting the following warning too.

check_group_uucp(): error testing lock file creation Error details:Permission deniedcheck_lock_status: No permission to create lock file.

please see: How can I use Lock Files with rxtx? in INSTALL

Adding my user to group uucp didn’t solve it L

usermod -aG uucp myUser

vim /etc/group