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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
68 lines
1.5 KiB
Markdown
68 lines
1.5 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_DNS_LOCAL_IP4
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_DNS_INTERFACE (3)
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- CURLOPT_DNS_LOCAL_IP6 (3)
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- CURLOPT_DNS_SERVERS (3)
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Protocol:
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- All
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---
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# NAME
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CURLOPT_DNS_LOCAL_IP4 - IPv4 address to bind DNS resolves to
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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_DNS_LOCAL_IP4, char *address);
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~~~
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# DESCRIPTION
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Set the local IPv4 *address* that the resolver should bind to. The argument
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should be of type char * and contain a single numerical IPv4 address as a
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string. Set this option to NULL to use the default setting (do not bind to a
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specific IP address).
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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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# DEFAULT
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NULL
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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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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
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curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14");
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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This option requires that libcurl was built with a resolver backend that
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supports this operation. The c-ares backend is the only such one.
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Added in 7.33.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not,
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CURLE_NOT_BUILT_IN if support was disabled at compile-time, or
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CURLE_BAD_FUNCTION_ARGUMENT when given a bad address.
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