#!/usr/bin/perl --
use strict;
use warnings;

use LWP 5.826;
use LWP::Protocol::http;

#perldoc -q "How do I find out my hostname/domainname/IP address?"
use Socket;
use Sys::Hostname;
my $host = hostname();
my $addr = inet_ntoa(scalar gethostbyname($host || 'localhost'));

my $ua = LWP::UserAgent->new();

{
  print "# works like default\n";
  local @LWP::Protocol::http::EXTRA_SOCK_OPTS = ( LocalAddr => $addr );
  print $ua->get("http://www.example.com")->status_line,"\n";
}

{
  print "# bad hostname\n";
  local @LWP::Protocol::http::EXTRA_SOCK_OPTS = ( LocalAddr => "nohost:666" );
  print $ua->get("http://www.example.com")->status_line,"\n";
}

{
  print "# unknown error\n";
  local @LWP::Protocol::http::EXTRA_SOCK_OPTS = ( LocalAddr => "localhost" );
  print $ua->get("http://www.example.com")->status_line,"\n";
  printf "$^E\n";
}

__END__

# works like default
200 OK
# bad hostname
500 Can't connect to www.example.com:80 (Bad hostname 'nohost:666')
# unknown error
500 Can't connect to www.example.com:80 (connect: Unknown error)
A connection attempt failed because the connected party did not properly respond after a period of time, or established
connection failed because connected host has failed to respond