#!/usr/bin/perl

use v5.14;
use warnings;

use Test::More;

use IO::Socket::IP;

use IO::Socket::INET;
use Socket qw( inet_aton inet_ntoa pack_sockaddr_in unpack_sockaddr_in );
use Errno qw( EINPROGRESS EWOULDBLOCK );

# Some odd locations like BSD jails might not like INADDR_LOOPBACK. We'll
# establish a baseline first to test against
my $INADDR_LOOPBACK = do {
   socket my $sockh, PF_INET, SOCK_STREAM, 0 or die "Cannot socket(PF_INET) - $!";
   bind $sockh, pack_sockaddr_in( 0, inet_aton( "127.0.0.1" ) ) or die "Cannot bind() - $!";
   ( unpack_sockaddr_in( getsockname $sockh ) )[1];
};
my $INADDR_LOOPBACK_HOST = inet_ntoa( $INADDR_LOOPBACK );
if( $INADDR_LOOPBACK ne INADDR_LOOPBACK ) {
   diag( "Testing with INADDR_LOOPBACK=$INADDR_LOOPBACK_HOST; this may be because of odd networking" );
}

my $testserver = IO::Socket::INET->new(
   Listen    => 1,
   LocalHost => "127.0.0.1",
   Type      => SOCK_STREAM,
) or die "Cannot listen on PF_INET - $IO::Socket::errstr";

my $socket = IO::Socket::IP->new(
   PeerHost    => "127.0.0.1",
   PeerService => $testserver->sockport,
   Type        => SOCK_STREAM,
   Blocking    => 0,
);

ok( defined $socket, 'IO::Socket::IP->new( Blocking => 0 ) constructs a socket' ) or
   diag( "  error was $IO::Socket::errstr" );

ok( defined $socket->fileno, '$socket has a fileno immediately after construction' );

while( !$socket->connect and ( $! == EINPROGRESS || $! == EWOULDBLOCK ) ) {
   my $wvec = '';
   vec( $wvec, fileno $socket, 1 ) = 1;
   my $evec = '';
   vec( $evec, fileno $socket, 1 ) = 1;

   select( undef, $wvec, $evec, undef ) or die "Cannot select() - $!";
}

ok( !$!, 'Repeated ->connect eventually succeeds' );

is( $socket->sockdomain, AF_INET,     '$socket->sockdomain' );
is( $socket->socktype,   SOCK_STREAM, '$socket->socktype' );

is_deeply( [ unpack_sockaddr_in $socket->peername ],
           [ unpack_sockaddr_in $testserver->sockname ],
           '$socket->peername' );

is( $socket->peerhost, $INADDR_LOOPBACK_HOST, '$socket->peerhost' );
is( $socket->peerport, $testserver->sockport, '$socket->peerport' );

ok( !$socket->blocking, '$socket->blocking' );

done_testing;
