XML-Parameters from the Server Side

how to read the XML-Parameters from the Server Side:

I use a Script client.pl to send XML-Parameters to a Script "server.pl"

client.pl:

...
my $uaB=new LWP::UserAgent;
$uaB->agent("TEST CALL" );

my $ReqB=new HTTP::Request GET => 'server.pl';
$ReqB->authorization_basic('TOTO','Password');
$ReqB->content_type('text/xml');
$ReqB->content("...<Parameter1>12345</Parameter1>...");
...

How can I read the XML-Parameters (Parameter1, etc) from the Server Side
"server.pl"?

Thank you
KN