CODEWITHSUNDEEP
phpcurlportphp-curl
hotips
hotips

Reputation: 2631

Specify source port range with curl using PHP

I need to specify the source port range for curl.
I don't see any option who let me choose a range for source port in TCP.

Is it possible?

Upvotes: 5

Views: 7234

Answers (2)

Marián Černý
Marián Černý

Reputation: 15748

You can use CURLOPT_LOCALPORT and CURLOPT_LOCALPORTRANGE options, which are similar to curl's --local-port command line option.

In the following example curl will try to use source port in range 6000-7000:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_LOCALPORT, 6000);
curl_setopt($ch, CURLOPT_LOCALPORTRANGE, 1000);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
echo $result;

From the command line one would use:

curl --local-port 6000-7000 <url>

For documentation see: CURLOPT_LOCALPORT and Local port number.

Upvotes: 5

Kerem
Kerem

Reputation: 11576

I think it would be better using fsockopen. I came up many times this worked for me when blocked by firewalls. See: http://php.net/fsockopen

$ports = array(80, 81);
foreach ($ports as $port) {
    $fp =@ fsockopen("tcp://127.0.0.1", $port);
    // or fsockopen("www.google.com", $port);
    if ($fp) {
        print "Port $port is open.\n";
        fclose($fp);
    } else {
        print "Port $port is not open.\n";
    }
}

By the way, there is CURLOPT_PORT for CURL, but doesn't work with tcp://127.0.0.1;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://127.0.0.1");
curl_setopt($ch, CURLOPT_PORT, 80);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
$re = curl_exec($ch);
// echo curl_errno($ch);
curl_close($ch);
print $re;

Upvotes: 1

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