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57 lines
1.5 KiB
Groff
57 lines
1.5 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_IPRESOLVE.md
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.TH CURLOPT_IPRESOLVE 3 "March 15 2024" libcurl
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.SH NAME
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CURLOPT_IPRESOLVE \- IP protocol version to use
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve);
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.fi
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.SH DESCRIPTION
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Allows an application to select what kind of IP addresses to use when
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establishing a connection or choosing one from the connection pool. This is
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interesting when using host names that resolve to more than one IP family.
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If the URL provided for a transfer contains a numerical IP version as a host
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name, this option does not override or prohibit libcurl from using that IP
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version.
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Available values for this option are:
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.IP CURL_IPRESOLVE_WHATEVER
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Default, can use addresses of all IP versions that your system allows.
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.IP CURL_IPRESOLVE_V4
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Uses only IPv4 addresses.
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.IP CURL_IPRESOLVE_V6
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Uses only IPv6 addresses.
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.SH DEFAULT
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CURL_IPRESOLVE_WHATEVER
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
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/* of all addresses example.com resolves to, only IPv6 ones are used */
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curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Always
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.SH RETURN VALUE
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Returns CURLE_OK
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.SH SEE ALSO
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.BR CURLOPT_HTTP_VERSION (3),
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.BR CURLOPT_RESOLVE (3),
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.BR CURLOPT_SSLVERSION (3)
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