NAME
Net::Rendezvous::Entry - Support module for mDNS service discovery (Apple's Rendezvous)
SYNOPSIS
use Net::Rendezvous;
my $res = Net::Rendezvous->new(<service>[, <protocol>]);
foreach my $entry ( $res->entries ) { print $entry->name, "\n"; }
DESCRIPTION
Net::Rendezvous::Entry is a module used to manage entries returned by a mDNS service discovery (Apple's Rendezvous). See Net::Rendezvous for more information.
METHODS
new([<fqdn>])
Creates a new Net::Rendezvous::Entry object. The optional argument defines the fully qualifed domain name (FQDN) of the entry. Normal usage of the Net::Rendezvous module will not require the construction of Net::Rendezvous::Entry objects, as they are automatically created during the discovery process.
address
Returns the IP address of the entry.
all_attrs
Returns all the current attributes in the form of hashed array.
attribute(<attribute>)
Returns the specified attribute from the TXT record of the entry. TXT records are used to specify additional information, e.g. path for http.
dnsrr([<record type>])
Returns an DNS answer packet of the entry. The output will be in the format of a Net::DNS::Packet object. The record type designates the resource record to answer with, i.e. PTR, SRV, or TXT. The default is PTR.
fetch
Reloads the information for the entry via mDNS.
fqdn
Returns the fully qualifed domain name (FQDN) of entry. An example FQDN is server._afpovertcp._tcp.local
hostname
Returns the hostname of the server, e.g. 'server.local'.
name
Returns the name of the entry. In the case of the fqdn example, the name would be 'server'. This name may not be the hostname of the server. For example, names for presence/tcp will be the name of the user and http/tcp will be title of the web resource.
port
Returns the TCP or UDP port of the entry.
sockaddr
Returns the binary socket address for the resource and can be used directly to bind() sockets.
EXAMPLES
Print out a list of local websites
print "<HTML><TITLE>Local Websites</TITLE>";
use Net::Rendezvous;
my $res = Net::Rendezvous->new('http');
foreach my $entry ( $res->entries) {
printf "<A HREF='http://%s%s'>%s</A><BR>",
$entry->address, $entry->attribute('path'),
$entry->name;
}
print "</HTML>";Find a service and connect to it
use Net::Rendezvous;
my $res = Net::Rendezvous->new('custom');
my $entry = $res->shift_entry;
socket SOCK, PF_INET, SOCK_STREAM, scalar(getprotobyname('tcp'));
connect SOCK, $entry->sockaddr;
print SOCK "Send a message to the service";
while ($line = <SOCK>) { print $line; }
close SOCK; SEE ALSO
COPYRIGHT
This library is free software and can be distributed or modified under the same terms as Perl itself.
Rendezvous (in this context) is a trademark of Apple Computer, Inc.
AUTHORS
The Net::Rendezvous::Entry module was created by George Chlipala <george@walnutcs.com>