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Updated: Thursday, June 13, 2019
 
 

CURLOPT_DNS_INTERFACE (3)

Name

CURLOPT_DNS_INTERFACE - set interface to speak DNS over

Synopsis

#include <curl/curl.h>

CURLcode  curl_easy_setopt(CURL  *handle,  CURLOPT_DNS_INTERFACE,  char
*ifname);

Description

CURLOPT_DNS_INTERFACE(3)   curl_easy_setopt options   CURLOPT_DNS_INTERFACE(3)



NAME
       CURLOPT_DNS_INTERFACE - set interface to speak DNS over

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_setopt(CURL  *handle,  CURLOPT_DNS_INTERFACE,  char
       *ifname);

DESCRIPTION
       Pass a char * as parameter. Set the name of the network interface  that
       the DNS resolver should bind to. This must be an interface name (not an
       address). Set this option to NULL to use  the  default  setting  (don't
       bind to a specific interface).

       The  application  does not have to keep the string around after setting
       this option.

DEFAULT
       NULL

PROTOCOLS
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_INTERFACE, "eth0");
         ret = curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.33.0. This option also requires that libcurl was built  with
       a  resolver backend that supports this operation. The c-ares backend is
       the only such one.

RETURN VALUE
       Returns CURLE_OK if the option is  supported,  CURLE_UNKNOWN_OPTION  if
       not, or CURLE_NOT_BUILT_IN if support was disabled at compile-time.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | web/curl         |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       CURLOPT_DNS_SERVERS(3), CURLOPT_DNS_LOCAL_IP4(3),



NOTES
       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source    was    downloaded    from    https://github.com/curl/curl/ar-
       chive/curl-7_64_0.zip

       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.



libcurl 7.37.0                    19 Jun 2014         CURLOPT_DNS_INTERFACE(3)