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2c6f13093e
Reduce mentions of libcurl versions like "since 7.xx ..." in option descriptions to reduce clutter and make the texts easier to read. Keep them in, or move them to, the HISTORY or DEPRECATED sections The last version 7 release (7.88.1) shipped on Februrary 20, 2023. Closes #20369
98 lines
2.6 KiB
Markdown
98 lines
2.6 KiB
Markdown
---
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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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Protocol:
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- All
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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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Added-in: 7.19.4
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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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IP addresses specified to this option can be provided using CIDR notation: an
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appended slash and number specifies the number of "network bits" out of the
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address to use in the comparison. For example "192.168.0.0/16" would match all
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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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Using this option multiple times makes the last set string override the
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previous ones. Set it to NULL to disable its use again.
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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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# 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.example:80");
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/* ... but make sure this hostname 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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# HISTORY
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CIDR format support was added in 7.86.0.
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# %AVAILABILITY%
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# RETURN VALUE
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curl_easy_setopt(3) returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
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libcurl-errors(3).
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