Description:
------------
Firewall blocking or slowness in DNS causes fsockopen() hang, much more than it should.This should return in 2 seconds. But it does not:

somedomain.localsite is not valid.
php -a
Interactive mode enabled

<?php
echo time()."\n";
$f = fsockopen('somedomain.localsite', 80, $tmp, $tmp, 2);
echo time()."\n";
var_dump($f);

1188857394
1188857426
bool(false)

Try with a unreachable IP, it returns as expected: (10.20.30.40 is not valid)

php -a
Interactive mode enabled

<?php
echo time()."\n";
$f = fsockopen('10.20.30.40', 80, $tmp, $tmp, 2);
echo time()."\n";
var_dump($f);

1188857495
1188857497
bool(false)

This can be a firewall/dns issue. There is a very complicated firewall installed here, which I don't know details yet.

It seems some packages are received, so that function does not time out as expected. However it does not return because it waits for some other packages.

Following is a google connection, it connects, but still not within 2 seconds. Socket handler is returned as if there is no delay!

php -a
Interactive mode enabled

<?php
echo time()."\n";
$f = fsockopen('www.google.com', 80, $tmp, $tmp, 2);
echo time()."\n";
var_dump($f);

1188857665
1188857681
resource(1) of type (stream)


Reproduce code:
---------------
Tested this with PHP 5.2.3 and does the same problem.

PHP is compiled with this:
./configure \
--with-config-file-path=/etc \
--enable-bcmath \
--with-bz2 \
--enable-calendar \
--enable-ftp \
--with-gettext \
--with-iconv \
--enable-mbstring=all \
--with-mysql \
--with-openssl \
--enable-sockets \
--enable-wddx \
--with-zlib \
--with-xmlrpc \
--enable-soap \
--enable-pcntl \
--enable-memory-limit \
--enable-force-cgi-redirect \
--disable-debug \
--enable-cgi \
--enable-fastcgi \
--enable-sysvsem \
--enable-sysvshm \
--enable-sysvmsg \
--enable-shmop \
--with-apxs2

Expected result:
----------------
I expect that fsockopen() will return back witin 2 seconds:

1) with FALSE return, means unsuccessful,
2) with a valid socket handler.

Any delay more than 2 seconds is not acceptable.