CURLOPT_DNS_LOCAL_IP4(3)

CURLOPT_DNS_LOCAL_IP4(3curl_easy_setopt optionCURLOPT_DNS_LOCAL_IP4(3)

NAME

     CURLOPT_DNS_LOCAL_IP4 - IPv4 address to bind DNS resolves to

SYNOPSIS

     #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  (don't 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

     CURL *curl = curl_easy_init();
     if(curl) {
       curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
       curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14");
       ret = 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.

SEE ALSO

     CURLOPT_DNS_INTERFACE(3), CURLOPT_DNS_LOCAL_IP6(3),

libcurl 7.58.0   Last change: December 10, 2017                 1