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| .TH CURLOPT_IPRESOLVE 3 "April 24, 2021" "libcurl 7.78.0" "curl_easy_setopt options" |
| |
| .SH NAME |
| CURLOPT_IPRESOLVE \- specify which IP protocol version to use |
| .SH SYNOPSIS |
| #include <curl/curl.h> |
| |
| CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve); |
| .SH 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: |
| .IP CURL_IPRESOLVE_WHATEVER |
| Default, can use addresses of all IP versions that your system allows. |
| .IP CURL_IPRESOLVE_V4 |
| Uses only IPv4 addresses. |
| .IP CURL_IPRESOLVE_V6 |
| Uses only IPv6 addresses. |
| .SH DEFAULT |
| CURL_IPRESOLVE_WHATEVER |
| .SH PROTOCOLS |
| All |
| .SH EXAMPLE |
| .nf |
| 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); |
| } |
| .fi |
| |
| .SH AVAILABILITY |
| Always |
| .SH RETURN VALUE |
| Returns CURLE_OK |
| .SH "SEE ALSO" |
| .BR CURLOPT_HTTP_VERSION "(3), " CURLOPT_SSLVERSION "(3), " |
