--- c: Copyright (C) Daniel Stenberg, , et al. SPDX-License-Identifier: curl Title: CURLOPT_ADDRESS_SCOPE Section: 3 Source: libcurl See-also: - CURLOPT_DEBUGFUNCTION (3) - CURLOPT_STDERR (3) Protocol: - All --- # NAME CURLOPT_ADDRESS_SCOPE - scope id for IPv6 addresses # SYNOPSIS ~~~c #include 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 # EXAMPLE ~~~c #include /* 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 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.