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- .TH CURLOPT_RESOLVE 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
- .SH NAME
- CURLOPT_RESOLVE \- provide custom host name to IP address resolves
- .SH SYNOPSIS
- .nf
- #include <curl/curl.h>
- CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVE,
- struct curl_slist *hosts);
- .SH DESCRIPTION
- Pass a pointer to a linked list of strings with host name resolve information
- to use for requests with this handle. The linked list should be a fully valid
- list of \fBstruct curl_slist\fP structs properly filled in. Use
- \fIcurl_slist_append(3)\fP to create the list and \fIcurl_slist_free_all(3)\fP
- to clean up an entire list.
- Each single name resolve string should be written using the format
- HOST:PORT:ADDRESS where HOST is the name libcurl will try to resolve, PORT is
- the port number of the service where libcurl wants to connect to the HOST and
- ADDRESS is the numerical IP address. If libcurl is built to support IPv6,
- ADDRESS can of course be either IPv4 or IPv6 style addressing.
- This option effectively pre-populates the DNS cache with entries for the
- host+port pair so redirects and everything that operations against the
- HOST+PORT will instead use your provided ADDRESS. Addresses to set with
- \fICURL_RESOLVE\fP will not time-out from the DNS cache like ordinary
- entries.
- You can remove names from the DNS cache again, to stop providing these fake
- resolves, by including a string in the linked list that uses the format
- \&"-HOST:PORT". The host name must be prefixed with a dash, and the host name
- and port number must exactly match what was already added previously.
- .SH DEFAULT
- NULL
- .SH PROTOCOLS
- All
- .SH EXAMPLE
- TODO
- .SH AVAILABILITY
- Added in 7.21.3
- .SH RETURN VALUE
- Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
- .SH "SEE ALSO"
- .BR CURLOPT_IPRESOLVE "(3), " CURLOPT_DNS_CACHE_TIMEOUT "(3), "
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