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-rw-r--r--src/c-ares/ares__close_sockets.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/c-ares/ares__close_sockets.c b/src/c-ares/ares__close_sockets.c
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index 000000000..f07904e87
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+++ b/src/c-ares/ares__close_sockets.c
@@ -0,0 +1,61 @@
+
+/* 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__socket_close(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__socket_close(channel, server->udp_socket);
+ server->udp_socket = ARES_SOCKET_BAD;
+ }
+}