I have written a form submission script which uses LWP::UA and proxy servers. If operation was successful it logs it, and counts one more successful submission. After some time I have noticed that some of the proxies are really slow and while $ua is grepping the page, $ua->timout ceases the operation. Howerver, despite of form was submitted, $res->is_success has negative value.

Now let's go to the point. I also have noticed what it's enough to get just a first line of server responce, compare it with a line in a script and if they match than we can log it and jump to the next proxy server. How to do this without "if ($res->is_success)"?

Chunk of shortened code from my script:
<code>use LWP::UserAgent;
$ua = new LWP::UserAgent;
$ua->proxy('http',"http://".$proxy);
$ua->timeout(5);
$req = new HTTP::Request POST => 'http://any.com/cgi-bin/any.pl';
$req->content('name=value');
$res = $ua->request($req);
if ($res->is_success) {...

In reply to form submission with LWP::UA using proxies by m3LLow

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