From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- src/c-ares/ares_getsock.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/c-ares/ares_getsock.c (limited to 'src/c-ares/ares_getsock.c') diff --git a/src/c-ares/ares_getsock.c b/src/c-ares/ares_getsock.c new file mode 100644 index 000000000..22d344679 --- /dev/null +++ b/src/c-ares/ares_getsock.c @@ -0,0 +1,66 @@ + +/* Copyright (C) 2005 - 2010, Daniel Stenberg + * + * 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" + +int ares_getsock(ares_channel channel, + ares_socket_t *socks, + int numsocks) /* size of the 'socks' array */ +{ + struct server_state *server; + int i; + int sockindex=0; + int bitmap = 0; + unsigned int setbits = 0xffffffff; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks || sockindex >= ARES_GETSOCK_MAXNUM) + break; + socks[sockindex] = server->udp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + sockindex++; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks || sockindex >= ARES_GETSOCK_MAXNUM) + break; + socks[sockindex] = server->tcp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + + if (server->qhead && active_queries) + /* then the tcp socket is also writable! */ + bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex); + + sockindex++; + } + } + return bitmap; +} -- cgit v1.2.3