ares_cancel - Man Page

#include <ares.h>

void ares_cancel(ares_channel_t *channel)

The ares_cancel(3) function cancels all lookups/requests made on the the name service channel identified by channel.  ares_cancel(3) invokes the callbacks for each pending query on the channel, passing a status of ARES_ECANCELLED. These calls give the callbacks a chance to clean up any state which might have been stored in their arguments. If such a callback invocation adds a new request to the channel, that request will not be cancelled by the current invocation of ares_cancel(3).

ares_init(3) ares_destroy(3)

This function was added in c-ares 1.2.0

c-ares 1.6.0 and earlier pass a status of ARES_ETIMEOUT instead of ARES_ECANCELLED.

ares_destroy(3), ares_getaddrinfo(3), ares_gethostbyaddr(3), ares_gethostbyname(3), ares_getnameinfo(3), ares_library_cleanup(3).