mirror of https://github.com/c-ares/c-ares.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.5 KiB
56 lines
1.5 KiB
/* 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 <sys/types.h> |
|
|
|
#ifdef WIN32 |
|
|
|
#else |
|
#include <sys/time.h> |
|
#endif |
|
|
|
#include "ares.h" |
|
#include "ares_private.h" |
|
|
|
int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) |
|
{ |
|
struct server_state *server; |
|
int i, nfds; |
|
|
|
/* No queries, no file descriptors. */ |
|
if (!channel->queries) |
|
return 0; |
|
|
|
nfds = 0; |
|
for (i = 0; i < channel->nservers; i++) |
|
{ |
|
server = &channel->servers[i]; |
|
if (server->udp_socket != -1) |
|
{ |
|
FD_SET(server->udp_socket, read_fds); |
|
if (server->udp_socket >= nfds) |
|
nfds = server->udp_socket + 1; |
|
} |
|
if (server->tcp_socket != -1) |
|
{ |
|
FD_SET(server->tcp_socket, read_fds); |
|
if (server->qhead) |
|
FD_SET(server->tcp_socket, write_fds); |
|
if (server->tcp_socket >= nfds) |
|
nfds = server->tcp_socket + 1; |
|
} |
|
} |
|
return nfds; |
|
}
|
|
|