Re^2: SOAP::Transport::HTTP::Daemon and XML

[rppowell]

I have the WSDL description, but only in file form. Is it necessary that WSDL file be web served? I don't see how to use it as local file, is it possible?

[erroneousBollock]

I have the WSDL description, but only in file form.

Are you sure?

Web-services commonly serve their WSDL from the proxy URL with '?WSDL' appended.

The SOAP::Transport::HTTP::Server subclasses don't make it easy to serve your WSDL from the same service, so what I do is the following:

1. use the HTTP::Request->parse constructor from HTTP::Request to build a request from the raw incoming request, then
2. (depending on the $request->uri) I either:
   • build a response containing WSDL, or
   • pass $request directly to SOAP::Transport::HTTP::Server like this:

          my $soap = SOAP::Transport::HTTP::Server
             -> new(%args) 
             -> dispatch_to(@classes);
          $soap->request($request);
          $soap->handle;
          my $response = $soap->response;
     

Is it necessary that WSDL file be web served? I don't see how to use it as local file, is it possible?

Sure, do something like this:

my $soap = SOAP::WSDL->new();
$soap->wsdl('file:/path/to/file.wsdl'); 
$soap->proxy('http://server/service.cgi');
$soap->wsdlinit(caching => 1);

Loading from the file saves some time on script startup, using caching saves a lot of work on each request.

Update: Fixed my URLs.

-David

[romanovsky]

Here is my solution of the task. It isn't very graceful. But it works:

package My::Net::SOAP::Transport::HTTP::Daemon;

use SOAP::Transport::HTTP;
use My::Net::SOAP::Transport::HTTP::Server;

@SOAP::Transport::HTTP::Daemon::ISA = qw(
    My::Net::SOAP::Transport::HTTP::Server
);

@My::Net::SOAP::Transport::HTTP::Daemon::ISA = qw(
    SOAP::Transport::HTTP::Daemon
);

sub setWsdl($$) {
    my $self        = shift;
    my $wsdlUri     = shift;
    my $wsdlFile    = shift;

    $/ = undef;
    open FILE, $wsdlFile or die "Cannot open '$wsdlFile' ($!)";
    $My::Net::SOAP::Transport::HTTP::Server::WsdlFileContent = <FILE>;
    close FILE;
    $My::Net::SOAP::Transport::HTTP::Server::WsdlURI = $wsdlUri;
    return 1;
}

1;

package My::Net::SOAP::Transport::HTTP::Server;

use strict;

use SOAP::Transport::HTTP;
our @ISA = qw(
    SOAP::Transport::HTTP::Server
);

our $WsdlFileContent;
our $WsdlURI;

sub handle {
    my $class = shift;

    my $result;
    eval {
        my $self = $class->new;
        if ($self->request->method eq 'GET') {
            if( $self->request->uri eq $WsdlURI ) {
                my $response = $WsdlFileContent;
                print "FOO:\n";
                $result = $self->make_response(undef,$response) || 1;
            }
            else {
                print STDERR "Got GET request with wrong URI '".$self-
+>request->uri."'!='$WsdlURI', ignoring";
            }
        }
    };
    if( $@ ) {
        print STDERR "Runtime error ($@)";
        return undef;
    }
    return $result if $result;
    return $class->handle();
}

1;


# now use derived Daemon class regular way
use My::Net::SOAP::Transport::HTTP::Daemon;
my $daemon = My::Net::SOAP::Transport::HTTP::Daemon->new(
    LocalAddr   => 'myhostname',
    LocalPort   => 9999,
)
    or die "Cannot create My::Net::SOAP::Transport::HTTP::Daemon";

$daemon->setWsdl("/$service?WSDL",'/path/to/file.wsdl') 
    or die "Cannot set WSDL ($@)";
my $dispatcher = $daemon->dispatch_with({ 'urn:/'.$service => 'My::WS:
+:'.$service });

my $object = $dispatcher->objects_by_reference("My::WS::".$service);

$object->dispatch_to('/my/lib/My/WS', $service);
$object->handle;

[upage123]

What perl packages do we need. is it SOAP lite?