lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | |
| 2 | /* Copyright 1998 by the Massachusetts Institute of Technology. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and distribute this |
| 5 | * software and its documentation for any purpose and without |
| 6 | * fee is hereby granted, provided that the above copyright |
| 7 | * notice appear in all copies and that both that copyright |
| 8 | * notice and this permission notice appear in supporting |
| 9 | * documentation, and that the name of M.I.T. not be used in |
| 10 | * advertising or publicity pertaining to distribution of the |
| 11 | * software without specific, written prior permission. |
| 12 | * M.I.T. makes no representations about the suitability of |
| 13 | * this software for any purpose. It is provided "as is" |
| 14 | * without express or implied warranty. |
| 15 | */ |
| 16 | |
| 17 | #include "ares_setup.h" |
| 18 | |
| 19 | #include "ares.h" |
| 20 | #include "ares_private.h" |
| 21 | |
| 22 | void ares__close_sockets(ares_channel channel, struct server_state *server) |
| 23 | { |
| 24 | struct send_request *sendreq; |
| 25 | |
| 26 | /* Free all pending output buffers. */ |
| 27 | while (server->qhead) |
| 28 | { |
| 29 | /* Advance server->qhead; pull out query as we go. */ |
| 30 | sendreq = server->qhead; |
| 31 | server->qhead = sendreq->next; |
| 32 | if (sendreq->data_storage != NULL) |
| 33 | ares_free(sendreq->data_storage); |
| 34 | ares_free(sendreq); |
| 35 | } |
| 36 | server->qtail = NULL; |
| 37 | |
| 38 | /* Reset any existing input buffer. */ |
| 39 | if (server->tcp_buffer) |
| 40 | ares_free(server->tcp_buffer); |
| 41 | server->tcp_buffer = NULL; |
| 42 | server->tcp_lenbuf_pos = 0; |
| 43 | |
| 44 | /* Reset brokenness */ |
| 45 | server->is_broken = 0; |
| 46 | |
| 47 | /* Close the TCP and UDP sockets. */ |
| 48 | if (server->tcp_socket != ARES_SOCKET_BAD) |
| 49 | { |
| 50 | SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0); |
| 51 | sclose(server->tcp_socket); |
| 52 | server->tcp_socket = ARES_SOCKET_BAD; |
| 53 | server->tcp_connection_generation = ++channel->tcp_connection_generation; |
| 54 | } |
| 55 | if (server->udp_socket != ARES_SOCKET_BAD) |
| 56 | { |
| 57 | SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0); |
| 58 | sclose(server->udp_socket); |
| 59 | server->udp_socket = ARES_SOCKET_BAD; |
| 60 | } |
| 61 | } |