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Diffstat (limited to 'docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.md')
-rw-r--r-- | docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.md | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.md b/docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.md new file mode 100644 index 000000000..69af83b6b --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.md @@ -0,0 +1,70 @@ +--- +c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. +SPDX-License-Identifier: curl +Title: CURLOPT_DNS_LOCAL_IP4 +Section: 3 +Source: libcurl +See-also: + - CURLOPT_DNS_INTERFACE (3) + - CURLOPT_DNS_LOCAL_IP6 (3) + - CURLOPT_DNS_SERVERS (3) +--- + +# NAME + +CURLOPT_DNS_LOCAL_IP4 - IPv4 address to bind DNS resolves to + +# SYNOPSIS + +~~~c +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP4, char *address); +~~~ + +# DESCRIPTION + +Set the local IPv4 *address* that the resolver should bind to. The argument +should be of type char * and contain a single numerical IPv4 address as a +string. Set this option to NULL to use the default setting (do not bind to a +specific IP address). + +The application does not have to keep the string around after setting this +option. + +# DEFAULT + +NULL + +# PROTOCOLS + +All + +# EXAMPLE + +~~~c +int main(void) +{ + CURL *curl = curl_easy_init(); + if(curl) { + CURLcode res; + curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin"); + curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14"); + res = curl_easy_perform(curl); + curl_easy_cleanup(curl); + } +} +~~~ + +# AVAILABILITY + +This option requires that libcurl was built with a resolver backend that +supports this operation. The c-ares backend is the only such one. + +Added in 7.33.0 + +# RETURN VALUE + +Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, +CURLE_NOT_BUILT_IN if support was disabled at compile-time, or +CURLE_BAD_FUNCTION_ARGUMENT when given a bad address. |