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- bookworm 7.88.1-10+deb12u8
- bookworm-backports 8.11.1-1~bpo12+1
- testing 8.11.1-1
- unstable 8.11.1-1
CURLOPT_IPRESOLVE(3) | curl_easy_setopt options | CURLOPT_IPRESOLVE(3) |
NAME¶
CURLOPT_IPRESOLVE - 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 establishing a connection or choosing one from the connection pool. This is interesting when using host names that resolve addresses using more than one version of IP. The allowed values are:
- CURL_IPRESOLVE_WHATEVER
- Default, can use addresses of all IP versions that your system allows.
- CURL_IPRESOLVE_V4
- Uses only IPv4 addresses.
- CURL_IPRESOLVE_V6
- Uses only 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");
/* of all addresses example.com resolves to, only IPv6 ones are used */
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¶
January 2, 2023 | libcurl 7.88.1 |