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Net::servent(3)
NAME
  Net::servent - by-name interface to Perl's built-in getserv*() functions

SYNOPSIS
   use Net::servent;
   $s = getservbyname(shift || 'ftp') || die "no service";
   printf "port for %s is %s, aliases are %s\n",
      $s->name, $s->port, "@{$s->aliases}";

   use Net::servent qw(:FIELDS);
   getservbyname(shift || 'ftp') || die "no service";
   print "port for $s_name is $s_port, aliases are @s_aliases\n";

DESCRIPTION
  This module's default exports override the core getservent(),
  getservbyname(), and getnetbyport() functions, replacing them with versions
  that return "Net::servent" objects.  They take default second arguments of
  "tcp".  This object has methods that return the similarly named structure
  field name from the C's servent structure from netdb.h; namely name,
  aliases, port, and proto.  The aliases method returns an array reference,
  the rest scalars.

  You may also import all the structure fields directly into your namespace
  as regular variables using the :FIELDS import tag.  (Note that this still
  overrides your core functions.)  Access these fields as variables named
  with a preceding "s_".  Thus, "$serv_obj->name()" corresponds to $s_name if
  you import the fields.  Array references are available as regular array
  variables, so for example "@{ $serv_obj->aliases()}" would be simply
  @s_aliases.

  The getserv() function is a simple front-end that forwards a numeric
  argument to getservbyport(), and the rest to getservbyname().

  To access this functionality without the core overrides, pass the "use" an
  empty import list, and then access function functions with their full
  qualified names.  On the other hand, the built-ins are still available via
  the "CORE::" pseudo-package.

EXAMPLES
   use Net::servent qw(:FIELDS);

   while (@ARGV) {
       my ($service, $proto) = ((split m!/!, shift), 'tcp');
       my $valet = getserv($service, $proto);
       unless ($valet) {
	   warn "$0: No service: $service/$proto\n"
	   next;
       }
       printf "service $service/$proto is port %d\n", $valet->port;
       print "alias are @s_aliases\n" if @s_aliases;
   }

NOTE
  While this class is currently implemented using the Class::Struct module to
  build a struct-like class, you shouldn't rely upon this.

AUTHOR
  Tom Christiansen

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