91 lines
2.4 KiB
Markdown
91 lines
2.4 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_NOPROXY
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_PROXY (3)
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- CURLOPT_PROXYAUTH (3)
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- CURLOPT_PROXYTYPE (3)
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---
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# NAME
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CURLOPT_NOPROXY - disable proxy use for specific hosts
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOPROXY, char *noproxy);
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~~~
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# DESCRIPTION
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Pass a pointer to a null-terminated string. The string consists of a comma
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separated list of hostnames that do not require a proxy to get reached, even
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if one is specified. The only wildcard available is a single * character,
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which matches all hosts, and effectively disables the proxy. Each name in this
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list is matched as either a domain which contains the hostname, or the
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hostname itself. For example, "ample.com" would match ample.com, ample.com:80,
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and www.ample.com, but not www.example.com or ample.com.org.
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Setting the *noproxy* string to "" (an empty string) explicitly enables the
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proxy for all hostnames, even if there is an environment variable set for it.
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Enter IPv6 numerical addresses in the list of hostnames without enclosing
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brackets:
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"example.com,::1,localhost"
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Since 7.86.0, IP addresses specified to this option can be provided using CIDR
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notation: an appended slash and number specifies the number of "network bits"
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out of the address to use in the comparison. For example "192.168.0.0/16"
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would match all addresses starting with "192.168".
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The application does not have to keep the string around after setting this
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option.
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# Environment variables
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If there is an environment variable called **no_proxy** (or **NO_PROXY**),
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it is used if the CURLOPT_NOPROXY(3) option is not set. It works exactly
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the same way.
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# DEFAULT
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NULL
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# PROTOCOLS
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Most
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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/* accept various URLs */
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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/* use this proxy */
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curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
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/* ... but make sure this host name is not proxied */
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curl_easy_setopt(curl, CURLOPT_NOPROXY, "www.example.com");
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curl_easy_perform(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.19.4
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
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CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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