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.

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

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);

Answer 3

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.