Check Device’s User-Agent using Perl

There is a CPAN library that helps to parse the User-Agent. You can download the Perl library at:

After you download the library, perform the usual installation procedures:

perl Makefile.PL
make install

The following is the source code:

use strict;

use Mobile::UserAgent;
my $uaobj = new Mobile::UserAgent();

The codes above is the standard declaration so that you can call “Mobile::UserAgent” library. The following 3 lines are used for testing purposes. Uncomment the following 3 lines and comment the above 1 line to do some testing.

#my $useragent = 'Nokia6600/1.0 (4.09.1) SymbianOS/7.0s Series60/2.0 '.
#   'Profile/MIDP-2.0 Configuration/CLDC-1.0';
#my $uaobj = new Mobile::UserAgent($useragent);

The following lines check the User-Agent string and pass the output to the subroutine “printWml” if the device suppose WML or the subroutine “printHtml” if the device doesn’t.

if ($uaobj->success()) {
   my $out='Vendor: ' . $uaobj->vendor()     . "
\n"; $out.='Model: ' . $uaobj->model() . "
\n"; $out.='Version: ' . $uaobj->version() . "
\n"; $out.='Series60: ' . $uaobj->isSeries60() . "
\n"; &printWml($out); } else { &printHtml("Connecting Client is not a mobile user-agent \n"); }

Continue reading Check Device’s User-Agent using Perl

How to convert SI message to GSM SMS User Data

After publishing the article on “How to send WAP Push data through SMPP”, there is a lot of requests on how to formulate the GSM SMS User Data.

Basically, the following is an example in java with remark in the code to explain how this is done:

  public String toSmsBinary() {
     GSM SMS User Data
     06: UDH Length which is 6
     05: 16 bit address
     04: Length(4)
     0B84: Destination Port(2948)
     23F0: Source Port(9200)
     Wireless Session Protocol 
     90: Transaction ID
     06: PDU Type(Push)
     01: Headers Length is 1
     AE: Content-Type is application/vnd.wap.sic
    StringBuilder ud = new StringBuilder().append("0605040b8423f0900601ae");
    return ud.toString();


The above function creates the GSM SMS User Data and Wireless Session Protocol (WSP) header. Continue reading How to convert SI message to GSM SMS User Data