Delivery Report about node-smpp HOT 7 CLOSED

var session = smpp.connect('smpp0.provider.com', 8000);

session.bind_transceiver({
  system_id: 'xxxx',
  password: 'xxxxx'
}, function(pdu) {
  if (pdu.command_status == 0) {

    /**
     * This submit one SMS and set always sent Derlivery Report with DR 1
     */
    session.submit_sm({
      registered_delivery: 1,
      destination_addr: '+34676300300',
      source_addr: 'SENDERXX',
      short_message: 'Hello Buddy'
    }, function(pdu) {
      if (pdu.command_status == 0) {
        console.log('id: %s', pdu.message_id);
      }
    });

    /**
     * Add event listener for DR or SMS Reception. This will listen to receive
     * messages. It will be executed once for each received message
     *
     * This event can be used to receive regular SMS as well. The difference
     * between SMS and DLRs is that DLRs have (pdu.esm_class == 4)
     */
    session.on('deliver_sm', function(pdu) {
      console.log(pdu)
      if (pdu.esm_class == 4) {
        var shortMessage = pdu.short_message;
        console.log('Received DR: %s', shortMessage.trim());
        session.send(pdu.response());
      }
    });
  }
});