73ef4ff3
 Hu Chunming
提交三方库
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/* 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 "ares_setup.h"
#include "ares.h"
#include "ares_private.h"
void ares__close_sockets(ares_channel channel, struct server_state *server)
{
struct send_request *sendreq;
/* Free all pending output buffers. */
while (server->qhead)
{
/* Advance server->qhead; pull out query as we go. */
sendreq = server->qhead;
server->qhead = sendreq->next;
if (sendreq->data_storage != NULL)
ares_free(sendreq->data_storage);
ares_free(sendreq);
}
server->qtail = NULL;
/* Reset any existing input buffer. */
if (server->tcp_buffer)
ares_free(server->tcp_buffer);
server->tcp_buffer = NULL;
server->tcp_lenbuf_pos = 0;
/* Reset brokenness */
server->is_broken = 0;
/* Close the TCP and UDP sockets. */
if (server->tcp_socket != ARES_SOCKET_BAD)
{
SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0);
ares__close_socket(channel, server->tcp_socket);
server->tcp_socket = ARES_SOCKET_BAD;
server->tcp_connection_generation = ++channel->tcp_connection_generation;
}
if (server->udp_socket != ARES_SOCKET_BAD)
{
SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0);
ares__close_socket(channel, server->udp_socket);
server->udp_socket = ARES_SOCKET_BAD;
}
}
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