CURLOPT_ADDRESS_SCOPE explained
Name
CURLOPT_ADDRESS_SCOPE - scope id for IPv6 addresses
Synopsis
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ADDRESS_SCOPE, long scope);
Description
Pass a long specifying the scope id value to use when connecting to IPv6 addresses.
Default
0
Protocols
This functionality affects all supported protocols
Example
#include <net/if.h> /* for if_nametoindex() */ int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode ret; long my_scope_id; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); my_scope_id = if_nametoindex("eth0"); curl_easy_setopt(curl, CURLOPT_ADDRESS_SCOPE, my_scope_id); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); } }
Availability
Added in curl 7.19.0
Return value
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. Returns CURLE_BAD_FUNCTION_ARGUMENT if set to a negative value.
See also
CURLOPT_DEBUGFUNCTION(3), CURLOPT_STDERR(3)
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