validating xml with perl

[Johnd]

I am trying to validate the below xsd http://nvd.nist.gov/schema/nvd-cve-feed_2.0.xsd with this xml : http://static.nvd.nist.gov/feeds/xml/cve/nvdcve-2.0-recent.xml using XML::LibXML::Schema and get an error message using the below code :

my $schema = XML::LibXML::Schema->new(location =>$xsd); 
 

  my $parser = XML::LibXML->new;  
    my $doc = $parser->parse_file($xml); 
    eval { $schema->validate( $doc ) };  
    if ( my $ex = $@ ) {         return $ex;     }     
return; }

and get an error message that the schema is error could someone tell why this validation is end with error and if i need to revisit my code for this validation to end with success?

[tangent]

Can you post the full error message. I tried the code below and got no errors.

use XML::LibXML;
my $xsd = 'http://nvd.nist.gov/schema/nvd-cve-feed_2.0.xsd';
my $xml = 'http://static.nvd.nist.gov/feeds/xml/cve/nvdcve-2.0-recent.
+xml';
my $schema = XML::LibXML::Schema->new(location =>$xsd); 
my $parser = XML::LibXML->new;  
my $doc = $parser->parse_file($xml); 
eval { $schema->validate( $doc ) };  
if ( my $ex = $@ ) {
    print $ex;
}     
else {
    print "Schema validated ok";
}

# OUTPUT
Schema validated ok

[Johnd]

here is the error message i get: Schemas parser error : Failed to locate the main schema resource at 'http://nvd.nist.gov/schema/nvd-cve-feed_2.0.xsd'

[tangent]

It seems like you're not even getting as far as retrieving the xsd file from the remote server. Can you normally retrieve files over the internet using Perl?