GNURLOPT_NOPROXY(3)

💅 noproxy but make it make sense 💅

okay so bestie, welcome to the GNURLOPT_NOPROXY(3) page from the curl_easy_setopt options crew. This is the whole vibe: no proxy for specific hosts, and yes, it’s giving “I know exactly which hosts skip the proxy line.” 🎀

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💖 NAME 💖

CURLOPT_NOPROXY — disable proxy use for specific hosts. periodt.

✨ SYNOPSIS ✨

#include <gnurl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOPROXY, char *noproxy);

🦋 DESCRIPTION 🦋

okay so you pass a pointer to a null-terminated string. That string is a comma separated list of host names that do not require a proxy to get reached, even if one is specified. The only wildcard available is a single * character, which matches all hosts, and effectively disables the proxy. Each name in this list is matched as either a domain which contains the hostname, or the hostname itself. For example, example.com would match example.com, example.com:80, and www.example.com, but not www.notanexample.com or example.com.othertld.

If the name in the noproxy list has a leading period, it is a domain match against the provided host name. This way ".example.com" will switch off proxy use for both "www.example.com" as well as for "foo.example.com".

Setting the noproxy string to "" (an empty string) will explicitly enable the proxy for all host names, even if there is an environment variable set for it.

Enter IPv6 numerical addresses in the list of host names without enclosing brackets:

"example.com,::1,localhost"

The application does not have to keep the string around after setting this option.

🌸 Environment variables 🌸

If there’s an environment variable called no_proxy (or NO_PROXY), it will be used if the GNURLOPT_NOPROXY(3) option is not set. It works exactly the same way.

🎀 DEFAULT 🎀

NULL

👑 PROTOCOLS 👑

Most

🍓 EXAMPLE 🍓

CURL *curl = curl_easy_init();
if(curl) {
  /* accept various URLs */
  curl_easy_setopt(curl, CURLOPT_URL, input);
  /* use this proxy */
  curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
  /* ... but make sure this host name is not proxied */
  curl_easy_setopt(curl, CURLOPT_NOPROXY, "www.example.com");
  curl_easy_perform(curl);
}

🦋 AVAILABILITY 🦋

Added in 7.19.4

⭐ RETURN VALUE ⭐

Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

🌈 SEE ALSO 🌈

• GNURLOPT_PROXY(3), GNURLOPT_PROXYAUTH(3),

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xoxo, your Unix bestie 💖 this page came from libcurl 7.37.0, dated 19 Jun 2014, and it’s the GNURLOPT_NOPROXY(3) manual page. no cap, that’s the whole footer vibe. 🫶