I'm UDPing an XML file and I want to parse it using XML::LibXML. After parsing then it must be validated against an XSD so that I know what type of XML file it is. But before all that I have to be able to handle broken XML files. I have noticed the recover flag but what do I do with it? If i send a broken XML file through the stream I get the error:

Received message: n="1.0" encoding="UTF-8"?>
<Capabilities xsi:schemaLocation="http://Capabilities.CUIntegration.co
+m capabili
ties.xsd" xmlns="http://Capabilities.CUIntegration.com" xmlns:xsi="htt
+p://www.w3
.org/2001/XMLSchema-instance">
        <VehicleID>String</VehicleID>
        <System>
                <ID>Servo</ID>
                <AcceptedCommands>Loiter</AcceptedCommands>
                <AvailableStreams>Telemetry</AvailableStreams>
        </System>
</Capabilities>

:1: parser error : Start tag expected, '<' not found
n="1.0" encoding="UTF-8"?>
^
The document has no document element.
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So now what? How do I fix this XML file so that it will validate ok?

Here are the codes:

Server

#!/usr/bin/perl -w
use strict;
use IO::Socket;
use XML::LibXML;

my $MySocket=new IO::Socket::INET->new(LocalPort=>1234,Proto=>'udp');
my $parser = XML::LibXML->new;
$parser->recover(1);
my $xml1 = "";
my $schema = XML::LibXML::Schema->new(location => 'C:\Users\deadpickle
+\Desktop\UAS\GRRUVI_1.50\panel\capabilities.xsd' );

while(1) {
    if ($MySocket) {
        $MySocket->recv($xml1,2669);
        print "\nReceived message: ", $xml1,"\n";
        my $doc = $parser->parse_string($xml1);
        #$parser->validation(1);

        eval { $schema->validate( $doc ) };
        die $@ if $@;

        print "VALID\n";
    }
}
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Client

#!/usr/bin/perl -w
 
use strict;
use IO::Socket;
use File::Slurp;

my $xml1 = read_file("C:\\Users\\deadpickle\\Desktop\\UAS\\GRRUVI_1.50
+\\panel\\test.xml");

my $MySocket=new IO::Socket::INET->new(PeerPort=>1234,Proto=>'udp',Pee
+rAddr=>'localhost');

while (1) {
    print $xml1;
    $MySocket->send($xml1);
    sleep 5;
}
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