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CURLOPT_NOPROXY(3)                  libcurl                 CURLOPT_NOPROXY(3)


NAME

       CURLOPT_NOPROXY - disable proxy use for specific hosts


SYNOPSIS

       #include <curl/curl.h>

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


DESCRIPTION

       Pass a pointer to a null-terminated string. The string consists of 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, "ample.com"
       would match ample.com, ample.com:80, and www.ample.com, but not
       www.example.com or ample.com.org.

       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"

       Since 7.86.0, IP addresses specified to this option can be provided
       using CIDR notation: an appended slash and number specifies the number
       of "network bits" out of the address to use in the comparison. For
       example "192.168.0.0/16" would match all addresses starting with
       "192.168".

       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 CURLOPT_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

       CURLOPT_PROXY(3), CURLOPT_PROXYAUTH(3),

ibcurl 8.1.2                    April 26, 2023              CURLOPT_NOPROXY(3)

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