| /* Copyright 1998 by the Massachusetts Institute of Technology. |
| * |
| * Permission to use, copy, modify, and distribute this |
| * software and its documentation for any purpose and without |
| * fee is hereby granted, provided that the above copyright |
| * notice appear in all copies and that both that copyright |
| * notice and this permission notice appear in supporting |
| * documentation, and that the name of M.I.T. not be used in |
| * advertising or publicity pertaining to distribution of the |
| * software without specific, written prior permission. |
| * M.I.T. makes no representations about the suitability of |
| * this software for any purpose. It is provided "as is" |
| * without express or implied warranty. |
| */ |
| |
| #include <stdlib.h> |
| #include "ares.h" |
| #include "ares_private.h" |
| |
| /* |
| * ares_cancel() cancels a ongoing request/resolve that might be going on on |
| * the given channel. It does NOT kill the channel, use ares_destroy() for |
| * that. |
| */ |
| void ares_cancel(ares_channel channel) |
| { |
| struct query *query, *next; |
| int i; |
| |
| for (query = channel->queries; query; query = next) |
| { |
| next = query->next; |
| query->callback(query->arg, ARES_ETIMEOUT, NULL, 0); |
| free(query->tcpbuf); |
| free(query->skip_server); |
| free(query); |
| } |
| channel->queries = NULL; |
| if (!(channel->flags & ARES_FLAG_STAYOPEN)) |
| { |
| for (i = 0; i < channel->nservers; i++) |
| ares__close_sockets(&channel->servers[i]); |
| } |
| } |