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- .\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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- .TH CURLOPT_IPRESOLVE 3 "January 02, 2023" "libcurl 7.88.1" "curl_easy_setopt options"
- .SH NAME
- CURLOPT_IPRESOLVE \- IP protocol version to use
- .SH SYNOPSIS
- .nf
- #include <curl/curl.h>
- CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve);
- .fi
- .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), "
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