Larv IT SMPP

This is a simplified implementation of the SMPP protocol.

Client

Simplest possible

This will setup a client that connects to localhost, port 2775 without username or password and send a message.

var larvitsmpp = require('larvitsmpp');

larvitsmpp.client(function(err, clientSession) {
    clientSession.sendSms({
        'from': '46701113311',
        'to': '46709771337',
        'message': 'Hello world'
    });

    // Gracefully close connection
    clientSession.unbind();
});

Some connection parameters and DLR

This will setup a client that connects to given host, port with username and password, send a password and retrieve a DLR.

larvitsmpp.client({
    'host': 'smpp.somewhere.com',
    'port': 2775,
    'username': 'foo',
    'password': 'bar'
}, function(err, clientSession) {
    if (err) {
        throw err;
    }

    clientSession.sendSms({
        'from': '46701113311',
        'to': '46709771337',
        'message': '«baff»',
        'dlr': true
    }, function(err, smsId, retPduObj) {
        if (err) {
            throw err;
        }

        console.log('SMS sent, smsId(s): ' + smsId.join(', '));
        console.log('Return PDU object:');
        console.log(retPduObj);
    });

    clientSession.on('dlr', function(dlr, dlrPduObj) {
        console.log('DLR received:');
        console.log(dlr);

        console.log('DLR PDU object:');
        console.log(dlrPduObj);

        // Gracefully close connection
        clientSession.unbind();
    });
});

Server

Simplest possible

This will setup a password less server on localhost, port 2775 and console.log() incomming commands.

var larvitsmpp = require('larvitsmpp');

larvitsmpp.server(function(err, serverSession) {
    if (err) {
        throw err;
    }

    serverSession.on('data', function(data) {
        console.log('command: ' + data.command);
    });
});

With auth, returning smsId and DLR

Example code below:

// This should of course be replaced with your preferred auth system
function checkuserpass(username, password, callback) {
    if (username === 'foo' && password === 'bar') {
        callback(null, true);
    } else {
        callback(null, false);
    }
}

larvitsmpp.server({
    'checkuserpass': checkuserpass
}, function(err, serverSession) {
    if (err) {
        throw err;
    }

    // Incoming SMS!
    serverSession.on('sms', function(sms) {

        // It is important to run the sms.resp() since this is a part of the protocol
        sms.resp({

            // Decimal value status code
            // Default is 0 == no error
            // See SMPP spec for all available status codes
            // For example: 11 == 0000000B == ESME_RINVDSTADR == "Invalid destination address".
            'status': 0,

            // Set SMS id, this is important if DLR is to be connected with the right SMS but is not mandatory
            'smsId': 450
        });

        // Oh, the sms sender wants a dlr (delivery report), send it!
        if (sms.dlr === true) {
            serverSession.sendDlr(sms);

            // To send a negative delivery report do:
            //serverSession.sendDlr(sms, false);
        }
    });
});

Session Events

connect

Triggered when the socket is connected to a client. This is server specific.

data

Triggered when data is comming in on the socket.

close

Triggered when the socket is closed.

error

Generic error event.

sms

Incoming SMS.

incomingPdu

Incoming PDU.

incomingPduObj

Incoming PDU Object. Same as incomingPdu, but it have been converted into an object instead of a buffer.

Session commands

send

Send a PDU to the remote.