How to use a SOCKS 5 proxy with cURL?

Question

Normal proxies (ex: 72.41.132.22:3128) work well with cURL, however when I use SOCKS 5 proxies with username/pass, It just gives me "[1" on the page.

Is there a way to use SOCKY 5 proxies with cURL ?

$proxy = "cagsan:jw22wdw@108.61.25.223:34792";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_PROXY, $proxy);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_HEADER, 1);
$curl_scraped_page = curl_exec($ch);
curl_close($ch);

Answer 1

You need to tell cURL the proxy is a SOCKS5 proxy, otherwise cURL assumes it's an HTTP proxy:

curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);

From the docs:

CURLOPT_PROXYTYPE

Either CURLPROXY_HTTP (default) or CURLPROXY_SOCKS5.

Answer 2

since cURL 7.21.7, you can use CURLOPT_PROXY and specify the SOCKS protocol:

curl_setopt($ch, CURLOPT_PROXY, 'socks5://bob:marley@localhost:12345');

More informations in the libcurl documentation.

Answer 3

For those looking to connect via a hostname(localhost?), and it's not working with CURLPROXY_SOCKS5, you can try CURLPROXY_SOCKS5_HOSTNAME.

curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);

In some earlier PHP versions, you will have to do:

curl_setopt($ch, CURLOPT_PROXYTYPE, 7);