dd06c60ada
c-ares call a callback on socket state changes. A better way than the ares_getsock() to get full control over the socket state.
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* 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 <stdlib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.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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void ares__close_sockets(ares_channel channel, struct server_state *server)
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{
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struct send_request *sendreq;
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/* Free all pending output buffers. */
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while (server->qhead)
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{
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/* Advance server->qhead; pull out query as we go. */
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sendreq = server->qhead;
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server->qhead = sendreq->next;
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free(sendreq);
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}
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server->qtail = NULL;
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/* Reset any existing input buffer. */
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if (server->tcp_buffer)
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free(server->tcp_buffer);
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server->tcp_buffer = NULL;
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server->tcp_lenbuf_pos = 0;
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/* Close the TCP and UDP sockets. */
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if (server->tcp_socket != ARES_SOCKET_BAD)
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{
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SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0);
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closesocket(server->tcp_socket);
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server->tcp_socket = ARES_SOCKET_BAD;
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}
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if (server->udp_socket != ARES_SOCKET_BAD)
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{
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SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0);
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closesocket(server->udp_socket);
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server->udp_socket = ARES_SOCKET_BAD;
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}
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}
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