CURL_IPRESOLVE_V4

CURL_IPRESOLVE_V4 is one of the accepted parameters for curl_setopt parameter #3 (optionally as a bitmask).

CURL_IPRESOLVE_V4 — Use only IPv4 addresses when establishing a connection or choosing one from the connection pool. Available as of cURL 7.10.8.

CURL_IPRESOLVE_V4 = 1;