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72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* $Id$ */
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/* Copyright 2005 by Daniel Stenberg.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright 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 advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. M.I.T. makes no representations about the
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* suitability of 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_getsock(ares_channel channel,
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int *s,
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int numsocks) /* size of the 'socks' array */
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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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int sockindex=0;
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int bitmap = 0;
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unsigned int setbits = 0xffffffff;
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ares_socket_t *socks = (ares_socket_t *)s;
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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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if(sockindex >= numsocks)
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break;
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socks[sockindex] = server->udp_socket;
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bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex);
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sockindex++;
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}
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if (server->tcp_socket != ARES_SOCKET_BAD)
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{
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if(sockindex >= numsocks)
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break;
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socks[sockindex] = server->tcp_socket;
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bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex);
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sockindex++;
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if (server->qhead) {
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/* then the tcp socket is also writable! */
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bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex-1);
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}
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}
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}
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return (int)nfds;
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}
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