Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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
new file mode 100644
index 000000000..f07904e87
--- /dev/null
+++ 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;
+    }
+}