NetSDS::Kannel(3) Kannel SMS gateway API


#!/usr/bin/env perl

use 5.8.0;
use warnings;
use strict;
use NetSDS::Kannel;
my $kannel = NetSDS::Kannel->new(
sendsms_url => 'http://localhost:1234/sendsms',
sendsms_user => 'sender',
sendsms_passwd => 'secret',
default_smsc => 'esme-megafon',
$res = $kannel->send(
from => '1234',
to => '380672222111',
text => 'Hallo there!',
smsc => 'emse-mts',
priority => 3,


"NetSDS::Kannel" module provides API to Kannel SMS gateway.

To decrease innecessary problems we use a lot of predefined parameters while sending and receiving messages via Kannel HTTP API. It's not so flexible as direct HTTP processing but less expensive in development time ;-)

This modules uses LWP to send messages and to process messages from Kannel.


new(%params) - class constructor
Constructor creates Kannel API handler and set it's configuration. Most of these parameters may be overriden while object method calls.

Admin API parameters:

* admin_url - Kannel admin API URL

* admin_passwd - password to admin API

Sending SMS API parameters:

* sendsms_url - URL of Kannel sendsms HTTP API

* sendsms_user - user name for sending SMS

* sendsms_passwd - password for sending SMS

* dlr_url - base URL for DLR retrieving

* default_smsc - default SMSC identifier for sending SMS

* default_timeout - default sending TCP timeout


send(%parameters) - send MT SM message to Kannel
This method allows to send SMS message via Kannel SMS gateway.

Parameters (mostly the same as in Kannel sendsms API):

* from - source address (overrides message)

* to - destination address (overrides message)

* text - message text (byte string)

* udh - user data header (byte string)

* charset - charset of text

* coding - 0 for GSM 03.38, 1 for binary, 2 for UCS2

* smsc - target SMSC (overrides default one)

* mclass - message class if necessary (0 for flash sms)

* validity - TTL for MO SM in minutes

* deferred - timeout for delayed delivery


        use NetSDS::Kannel;
        use NetSDS::Util::Misc;
        my $kannel = NetSDS::Kannel->new(...);
                from => '1234',
                to => '380672206770',
                text => 'Wake up!!!',
                smsc => 'nokia_modem',
                msgid => make_uuid,
receive($cgi) - receive MO or DLR from CGI object
This method provides import message structure from CGI request . This method is just wrapper around "receive_mo()" and "receive_dlr()" methods.

Message type (MO or DLR) recognized by "type" CGI parameter that may be "mo" or "dlr".

        my $cgi = CGI::Fast->new();
        my %ret = $kannel->receive($cgi);
receive_mo($cgi) - import MO message from CGI object
This method provides import message structure from CGI request .

Imported MO message parameters returned as hash with the following keys:

* smsc - Kannel's SMSC Id

* smsid - SMSC message ID

* from - subscriber's MSISDN

* to - service address (short code)

* time - SMS receive time

* unixtime SMS receive time as UNIX timestamp

* text - MO SM text

* bin - MO SM as binary string

* udh - SMS UDH (User Data Headers)

* coding - SMS encoding (0 - 7 bit GSM 03.38; 2 - UCS2-BE)

* charset - charset of MO SM text while receiving from Kannel

* binfo - SMPP "service_type" parameter for billing puroses

receive_dlr($cgi) - import message from CGI object
This method provides import message structure from CGI request .

"receive_dlr" method returns hash with the following keys:

* smsc - kannel SMSC id

* msgid - original MT SM message id for DLR identification

* smsid - SMSC message ID

* from - subscriber's MSISDN (phone number)

* to - service address (short code)

* time - delivery time

* unixtime - delivery time as UNIX timestamp

* dlr - DLR state

* dlrmsg - DLR message from SMSC


        my $cgi = CGI->new();
        my %dlr = $kannel->receive_dlr($cgi);
        print "DLR received for MSISDN: " . $dlr{from};
make_dlr_url(%params) - prepare DLR URL
This method creates URI escaped string with URL template for DLR notification.

Paramters: hash (dlr_url, msgid)

Returns: URI escaped DLR URL

make_meta(%params) - prepare SMPP optional TLV
This method creates URI escaped string with optional SMPP tag-lenght-value (TLV) parameters to send them in "meta-data" CGI paramter of Kannel's "sendsms" HTTP API.

Format of "meta-data" parameter value:


Paramters: hash of TLV pairs

Returns: URI escaped string


        my $meta = $self->make_meta(
                charging_id => '0',

This will return: %3Fsmpp%3Fcharging_id%3D0

status() - retrieve Kannel status
store_status() - retrieve message queue status
Not implemented yet.
shutdown() - bring down Kannel
suspend() - switch Kannel to 'suspended' state
isolate() - switch Kannel to 'isolated' state
resume() - resume Kannel to 'online' state
restart() - whole bearerbox restart
flush_dlr() - flush queued DLR if Kannel in 'suspended' state
reload_lists() - reload black/white lists
log_level($level) - change Kannel log-level
start_smsc($smsc) - switch on SMSC connection
stop_smsc($smsc) - switch off SMSC connection
add_smsc($smsc) - add new SMSC connection
remove_smsc($smsc) - remove SMSC connection


See Nibelite kannel API


1. Add PPG support.

2. Add OTA support.


Michael Bochkaryov <[email protected]>


Copyright (C) 2008-2009 Net Style Ltd.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA