PHP cURL how to add the User Agent value OR overcome the Servers blocking cURL requests?

Question

I am transferring an Object Array. I have a cURL client (submitter) on own Server and listening script on other's Server, which one is not under my control. Then i think there, they are blocking the incoming cURL requests because when i test with the normal HTML <form>, it is working. But not via cURL anyway.

So i think they have done some restriction to cURL.

Then my questions here are:

1. Can a Server restrict/block the cURL incoming requests?
2. If so, can i trick/change the HTTP Header (User Agent) in my initiating cURL script?
3. Or is there any other possible stories?

Thanks!

Answer 1

IF you are still facing the problem then do the following.

1.

$config['useragent'] = 'Mozilla/5.0 (Windows NT 6.2; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0';

curl_setopt($curl, CURLOPT_USERAGENT, $config['useragent']);
curl_setopt($curl, CURLOPT_REFERER, 'https://www.domain.com/');

2.

$dir                   = dirname(__FILE__);
$config['cookie_file'] = $dir . '/cookies/' . md5($_SERVER['REMOTE_ADDR']) . '.txt';

curl_setopt($curl, CURLOPT_COOKIEFILE, $config['cookie_file']);
curl_setopt($curl, CURLOPT_COOKIEJAR, $config['cookie_file']);

NOTE: You need a COOKIES folder in directory.

3.

curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

If doing these don't solve the problem then Give the Sample Input/Output/Error/etc. So, that more precise solution can be provided.