CURLOPT_IPRESOLVE - Man Page
specify which IP protocol version to use
Synopsis
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve);
Description
Allows an application to select what kind of IP addresses to use when resolving host names. This is only interesting when using host names that resolve addresses using more than one version of IP. The allowed values are:
- CURL_IPRESOLVE_WHATEVER
Default, resolves addresses to all IP versions that your system allows.
- CURL_IPRESOLVE_V4
Resolve to IPv4 addresses.
- CURL_IPRESOLVE_V6
Resolve to IPv6 addresses.
Default
CURL_IPRESOLVE_WHATEVER
Protocols
All
Example
CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin"); /* resolve host name using IPv6-names only */ curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); }
Availability
Always
Return Value
Returns CURLE_OK
See Also
Referenced By
curl_easy_setopt(3), CURLOPT_DNS_SHUFFLE_ADDRESSES(3), CURLOPT_PROXY_SSLVERSION(3), CURLOPT_RESOLVE(3), CURLOPT_SSLVERSION(3), libcurl-security(3).
November 04, 2020 libcurl 7.76.0 curl_easy_setopt options