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72 Commits

Author SHA1 Message Date
Dan Fandrich
00142d8443 Only set TCP_NODELAY when it exists 2008-11-28 22:07:40 +00:00
Yang Tse
17d2a464ad Refactor configure script detection of functions used to set sockets into 
non-blocking mode, and decouple function detection from function capability.
 2008-11-13 18:56:55 +00:00
Daniel Stenberg
3e3d10824f - Carlo Contavalli added support for the glibc "rotate" option, as documented 
in man resolv.conf:

  causes round robin selection of nameservers from among those listed.  This
  has the effect of spreading the query load among all listed servers, rather
  than having all clients try the first listed server first every time.

  You can enable it with ARES_OPT_ROTATE
 2008-11-01 18:35:19 +00:00
Yang Tse
3f2de3d101 Charles Hardin patch: 
- handles the EINPROGRESS for UDP connects
- uses closesocket instead of close on some paths that were noticed
 2008-10-21 01:58:23 +00:00
Yang Tse
39de6c784c adjust inclusion of "nameser.h" 2008-09-17 01:02:57 +00:00
Yang Tse
2a6148716c Functionality only possible if recvfrom() is available. 2008-08-26 03:08:27 +00:00
Yang Tse
423a18cecc Brad House's validation that DNS response address matches the request address 2008-08-25 03:34:50 +00:00
Yang Tse
e30bbfd85d fix compiler warning 2008-07-10 08:21:48 +00:00
Yang Tse
164a985115 millisecond resolution support followup 2008-05-15 22:57:33 +00:00
Daniel Stenberg
76c251513e - Introducing millisecond resolution support for the timeout option. See 
ares_init_options()'s ARES_OPT_TIMEOUTMS.
 2008-05-13 20:48:48 +00:00
Daniel Stenberg
6df5dddd90 check for strings.h in configure and use it for the strcasecmp() proto 2008-05-08 22:11:38 +00:00
Yang Tse
8f0bef2fa0 Renamed internal function to avoid a variable shadowing it 2007-10-18 17:17:18 +00:00
Gisle Vanem
59136ece19 'FD_CLOXEC' is meaningless on MSDOS/Watt-32. 2007-10-08 14:38:51 +00:00
Steinar H. Gunderson
91b38857ef Removed a piece of redundant code (process_answer already takes care of it). 2007-10-04 08:12:12 +00:00
Yang Tse
38dd0ede9d Fix compiler warning 2007-09-30 19:43:23 +00:00
Yang Tse
62c264bcdb check availability of <netinet/tcp.h> 2007-09-30 02:12:11 +00:00
Steinar H. Gunderson
84fcff79f4 Use ISDIGIT instead of isdigit; fixes a gcc warning. 2007-09-29 21:57:05 +00:00
Steinar H. Gunderson
23f5d145ec Previously, processing a large batch of timeouts was O(n^2) in the number of 
outstanding queries, and processing a DNS response packet was O(n) in the
number of outstanding queries. To speed things up in Google, we added a few circular,
doubly-linked lists of queries that are hash-bucketed based on
the attributes we care about, so most important operations are now O(1).

It might be that the number of buckets are higher than most people would need,
but on a quick calculation it should only be 100kB or so even on a 64-bit
system, so I've let it stay as-is.
 2007-09-29 18:18:47 +00:00
Gisle Vanem
7a7f490efa Fix compiler warning in setsockopt(). 2007-09-29 14:34:59 +00:00
Steinar H. Gunderson
95c15fce0c TCP queries can time out too, not just UDP queries. (Patch from the Google tree.) 2007-09-29 14:25:14 +00:00
Steinar H. Gunderson
c788efffd4 Read and process as many packets as possible in read_udp_packets, to avoid having to run the entire event loop once per packet. (Patch from the Google tree.) 2007-09-29 14:21:47 +00:00
Steinar H. Gunderson
c1a475e708 There are two different places in write_tcp_data() that advance the send_queue; however, they are slightly different and only the first one properly uses a while loop. Consolidate both into a single function that DTTR. (Patch from the Google tree.) 2007-09-29 14:09:14 +00:00
Steinar H. Gunderson
63ac6156aa Forgot to include a few hunks from ares_process.c earlier. Fixing now. 2007-09-28 15:51:00 +00:00
Steinar H. Gunderson
08a70d117c Support a few more socket options, and refactor the option setting a bit. (Patch from the Google tree.) 2007-09-28 15:15:39 +00:00
Steinar H. Gunderson
6ce589c3ee Make the query callbacks return the number of timeouts that happened during the execution of a query, and update documentation accordingly. (Patch from the Google tree.) 2007-09-28 14:46:51 +00:00
Steinar H. Gunderson
d426c20c0a Three fixes in one commit (sorry): a) Take care of the tcpbuf if it ends while queued for transmission, note broken servers and close them in the main loop, and store TCP socket generation number in order not to send the same query twice over the same socket. 2007-09-28 14:28:14 +00:00
Steinar H. Gunderson
54ca7d8cb2 Don't skip a server if it's the only one. (Bugfix from the Google tree.) 2007-09-28 14:26:11 +00:00
Daniel Stenberg
015fc6aa17 wrong, revert the previous "fix" and instead check that the fd_set pointer 
is non-NULL before we FD_CLR
 2007-09-27 12:04:56 +00:00
Daniel Stenberg
a739b9bc45 eek, fix the conditions to return on either problem instead of requiring 
both to occur
 2007-09-27 12:02:15 +00:00
Daniel Stenberg
0f4664d27f Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in 
several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that
if it fails and the socket is closed the following code doesn't try to use
the file descriptor.
 2007-09-22 21:23:10 +00:00
Daniel Stenberg
0f89a2e639 Steinar H. Gunderson modified c-ares to now also do to DNS retries even when 
TCP is used since there are several edge cases where it still makes sense.
 2007-09-22 21:04:16 +00:00
Daniel Stenberg
88ce03e945 Vlad Dinulescu fixed two outstanding valgrind reports 2007-07-14 13:08:50 +00:00
Daniel Stenberg
b084dc8760 Brad House fixed VS2005 compiler warnings due to time_t being 64bit. 
He also made recent Microsoft compilers use _strdup() instead of strdup().
 2007-06-02 19:48:29 +00:00
Daniel Stenberg
670273968c added ares_process_fd() to allow applications to ask for processing on 
specific sockets and thus avoiding select() and associated functions/macros.
This function will be used by upcoming libcurl releases for this very
reason. It also made me export the ares_socket_t type in the public ares.h
header file, since ares_process_fd() uses that type for two of the arguments.
 2007-05-30 12:58:47 +00:00
Gisle Vanem
ee1235a7cd Removed inclusion of <sys/types.h> in .c-files 
since it's already included through "setup.h".
 2007-02-26 04:33:19 +00:00
Yang Tse
69565afab0 Check for stdbool.h at configuration stage, and include it if available. 
Check for lowercase 'bool' type at configuration stage. If not available
provide a suitable replacement with a type definition of 'unsigned char'
in setup_once.h

Move definitions of TRUE and FALSE to setup_once.h
 2007-02-22 02:51:54 +00:00
Yang Tse
059b57677c use macros ERRNO, SET_ERRNO(), SOCKERRNO and SET_SOCKERRNO() for errno handling 2007-02-16 15:04:44 +00:00
Gisle Vanem
5446ed4733 Use correct 3rd argument for ioctlsocket() under Watt-32. 2007-02-04 13:34:34 +00:00
Yang Tse
d2dd3d7e16 compiler warning fix 2007-02-01 15:36:56 +00:00
Yang Tse
5450db9151 Compiler warning fix 2006-10-25 10:25:43 +00:00
Yang Tse
5df4be1165 Check for USE_WINSOCK instead of WIN32 where the check was done 
to verify winsock API availability.
 2006-10-18 21:05:40 +00:00
Daniel Stenberg
7c621cfbdf Brad Spencer did 
o made ares_version.h use extern "C" for c++ compilers
 o fixed compiler warnings in ares_getnameinfo.c
 o fixed a buffer position init for TCP reads
 2006-08-29 15:17:47 +00:00
Yang Tse
aa791ee5cf Fix compiler warnings. 2006-07-29 09:15:03 +00:00
Yang Tse
2c81bfead5 Replace send() and recv() with swrite() and sread() macros. 2006-07-28 18:01:23 +00:00
Gisle Vanem
93858efe73 2nd try adding CVS id. 2006-07-22 15:37:10 +00:00
Yang Tse
bd8d4637a3 Fix compiler warning 2006-07-14 11:04:19 +00:00
William Ahern
4524618bf2 Handle EAGAIN/EWOULDBLOCK readiness errors, which can occur for both TCP and 
UDP even when a poll(2) or select(2) suggest otherwise.
 2006-06-19 01:18:05 +00:00
Daniel Stenberg
dd06c60ada Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes 
c-ares call a callback on socket state changes. A better way than the
ares_getsock() to get full control over the socket state.
 2006-05-03 06:11:44 +00:00
Gisle Vanem
f1f32477e3 Changes for PellesC for Win32. It needs <unistd.h> for 'ssize_t'. Hence the 
rearrangement in ares_process.c.
 2005-12-20 20:48:38 +00:00
Yang Tse
4f69318e12 Fix compiler warning 2005-12-09 21:09:21 +00:00