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56 lines
1.6 KiB
56 lines
1.6 KiB
/* Copyright 1998 by the Massachusetts Institute of Technology. |
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* |
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* Permission to use, copy, modify, and distribute this |
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* software and its documentation for any purpose and without |
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* fee is hereby granted, provided that the above copyright |
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* notice appear in all copies and that both that copyright |
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* notice and this permission notice appear in supporting |
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* documentation, and that the name of M.I.T. not be used in |
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* advertising or publicity pertaining to distribution of the |
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* software without specific, written prior permission. |
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* M.I.T. makes no representations about the suitability of |
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* this software for any purpose. It is provided "as is" |
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* without express or implied warranty. |
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*/ |
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#include "setup.h" |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_TIME_H |
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#include <sys/time.h> |
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#endif |
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#include "ares.h" |
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#include "ares_private.h" |
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int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) |
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{ |
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struct server_state *server; |
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ares_socket_t nfds; |
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int i; |
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/* No queries, no file descriptors. */ |
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if (!channel->queries) |
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return 0; |
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nfds = 0; |
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for (i = 0; i < channel->nservers; i++) |
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{ |
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server = &channel->servers[i]; |
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if (server->udp_socket != ARES_SOCKET_BAD) |
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{ |
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FD_SET(server->udp_socket, read_fds); |
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if (server->udp_socket >= nfds) |
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nfds = server->udp_socket + 1; |
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} |
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if (server->tcp_socket != ARES_SOCKET_BAD) |
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{ |
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FD_SET(server->tcp_socket, read_fds); |
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if (server->qhead) |
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FD_SET(server->tcp_socket, write_fds); |
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if (server->tcp_socket >= nfds) |
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nfds = server->tcp_socket + 1; |
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} |
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} |
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return (int)nfds; |
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}
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