1 Changelog for the c-ares project
3 * Nov 19 2008 (Daniel Stenberg)
4 - Brad Spencer brought the new function ares_gethostbyname_file() which simply
5 resolves a host name from the given file, using the regular hosts syntax.
7 * Nov 1 2008 (Daniel Stenberg)
8 - Carlo Contavalli added support for the glibc "rotate" option, as documented
11 causes round robin selection of nameservers from among those listed. This
12 has the effect of spreading the query load among all listed servers, rather
13 than having all clients try the first listed server first every time.
15 You can enable it with ARES_OPT_ROTATE
17 * Oct 21 2008 (Yang Tse)
18 Charles Hardin added handling of EINPROGRESS for UDP connects.
20 * Oct 18 2008 (Daniel Stenberg)
21 Charles Hardin made adig support a regular numerical dotted IP address for the
24 * Oct 7 2008 (Yang Tse)
25 - Added --enable-optimize configure option to enable and disable compiler
26 optimizations to allow decoupled setting from --enable-debug.
28 * Oct 2 2008 (Yang Tse)
29 - Added --enable-warnings configure option to enable and disable strict
30 compiler warnings to allow decoupled setting from --enable-debug.
32 * Sep 17 2008 (Yang Tse)
33 - Code reorganization to allow internal/private use of "nameser.h" to any
34 system that lacks arpa/nameser.h or arpa/nameser_compat.h header files.
36 * Sep 16 2008 (Yang Tse)
37 - Code reorganization to allow internal/private use of ares_writev to any
38 system that lacks the writev function.
40 * Sep 15 2008 (Yang Tse)
41 - Code reorganization to allow internal/private use of ares_strcasecmp to any
42 system that lacks the strcasecmp function.
44 - Improve configure detection of some string functions.
46 * Sep 11 2008 (Yang Tse)
47 - Code reorganization to allow internal/private use of ares_strdup to any
48 system that lacks the strdup function.
50 Version 1.5.3 (Aug 29, 2008)
52 * Aug 25 2008 (Yang Tse)
53 - Improvement by Brad House:
55 This patch addresses an issue in which a response could be sent back to the
56 source port of a client from a different address than the request was made to.
57 This is one form of a DNS cache poisoning attack.
59 The patch simply uses recvfrom() rather than recv() and validates that the
60 address returned from recvfrom() matches the address of the server we have
61 connected to. Only necessary on UDP sockets as they are connection-less, TCP
64 - Fix by George Neill:
65 Fixed compilation of acountry sample application failure on some systems.
67 * Aug 4 2008 (Daniel Stenberg)
71 * Users (usually, but not always) on 2-Wire routers and the Comcast service
72 and a wired connection to their router would find that the second and
73 subsequent DNS lookups from fresh processes using c-ares to resolve the same
74 address would cause the process to never see a reply (it keeps polling for
75 around 1m15s before giving up).
78 * On such a machine (and yeah, it took us a lot of QA to find the systems
79 that reproduce such a specific problem!), do 'ahost www.secondlife.com',
80 then do it again. The first process's lookup will work, subsequent lookups
81 will time-out and fail.
84 * init_id_key() was calling randomize_key() *before* it initialized
85 key->state, meaning that the randomness generated by randomize_key() is
86 immediately overwritten with deterministic values. (/dev/urandom was also
87 being read incorrectly in the c-ares version we were using, but this was
88 fixed in a later version.)
89 * This makes the stream of generated query-IDs from any new c-ares process
90 be an identical and predictable sequence of IDs.
91 * This makes the 2-Wire's default built-in DNS server detect these queries
92 as probable-duplicates and (erroneously) not respond at all.
95 * Aug 4 2008 (Yang Tse)
96 - Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use.
97 Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62
98 version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols
99 no matter if the system is AIX or not. To keep the traditional behaviour,
100 and an uniform one across autoconf versions AC_AIX is replaced with our
101 own internal macro CARES_CHECK_AIX_ALL_SOURCE.
103 * Aug 1 2008 (Yang Tse)
104 - Configure process now checks if the preprocessor _REENTRANT symbol is already
105 defined. If it isn't currently defined a set of checks are performed to test
106 if its definition is required to make visible to the compiler a set of *_r
107 functions. Finally, if _REENTRANT is already defined or needed it takes care
108 of making adjustments necessary to ensure that it is defined equally for the
109 configure process tests and generated config file.
111 * Jul 20 2008 (Yang Tse)
112 - When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will
113 now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID,
114 RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID.
116 * Jul 17 2008 (Yang Tse)
117 - RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined
118 to the data type pointed by its respective argument and not the pointer type.
120 * Jul 16 2008 (Yang Tse)
121 - Improved configure detection of number of arguments for getservbyport_r.
122 Detection is now based on compilation checks instead of linker ones.
124 - Configure process now checks availability of recvfrom() socket function and
125 finds out its return type and the types of its arguments. Added definitions
126 for non-configure systems config files, and introduced macro sreadfrom which
127 will be used on udp sockets as a recvfrom() wrapper in the future.
129 * Jul 15 2008 (Yang Tse)
130 - Introduce definition of _REENTRANT symbol in setup.h to improve library
131 usability. Previously the configure process only used the AC_SYS_LARGEFILE
132 macro for debug builds, now it is also used for non-debug ones enabling the
133 use of configure options --enable-largefile and --disable-largefile which
134 might be needed for library compatibility. Remove checking the size of
135 curl_off_t, it is no longer needed.
137 * Jul 3 2008 (Daniel Stenberg)
138 - Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and
139 the target host has only A records, it automatically falls back to an
140 AF_INET lookup and gives you the A results. However, if the target host has
141 a CNAME record, this behaviour is defeated since the original query does
142 return some data even though ares_parse_aaa_reply() doesn't consider it
143 relevant. Here's a small patch to make it behave the same with and without
146 * Jul 2 2008 (Yang Tse)
147 - Fallback to gettimeofday when monotonic clock is unavailable at run-time.
149 * Jun 30 2008 (Daniel Stenberg)
151 - As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is
152 not posix or anything and thus c-ares failed to build on hurd (and possibly
153 elsewhere). The define was also somewhat artificially used in the windows
154 port. Now, I instead rewrote the use of gethostbyname to enlarge the host
155 name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN
156 define. I thus also removed the defien from the namser.h file where it was
157 once added for the windows build.
159 I also fixed init_by_defaults() function to not leak memory in case if
162 * Jun 9 2008 (Yang Tse)
164 - Make libcares.pc generated file for pkg-config include information relative
165 to the libraries needed for the static linking of c-ares.
167 * May 30 2008 (Yang Tse)
169 - Brad House fixed a missing header file inclusion in adig sample program.
171 Version 1.5.2 (May 29, 2008)
173 * May 13 2008 (Daniel Stenberg)
175 - Introducing millisecond resolution support for the timeout option. See
176 ares_init_options()'s ARES_OPT_TIMEOUTMS.
178 * May 9 2008 (Yang Tse)
180 - Use monotonic time source if available, for private function ares__tvnow()
182 * May 7 2008 (Daniel Stenberg)
184 - Sebastian made c-ares able to return all PTR-records when doing reverse
185 lookups. It is not common practice to have multiple PTR-Records for a single
186 IP, but its perfectly legal and some sites have those.
188 - Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to
189 autoconf 2.57 usage (which is the version you have specified as the minimum
190 version). It's a minor change but it does clean up some warnings with newer
191 autoconf (specifically 2.62).
193 * May 5 2008 (Yang Tse)
195 - Improved parsing of resolver configuration files.
197 * April 4 2008 (Daniel Stenberg)
199 - Eino Tuominen improved the code when a file is used to seed the randomizer.
201 - Alexey Simak made adig support NAPTR records
203 - Alexey Simak fixed the VC dsp file by adding the missing source file
206 * December 11 2007 (Gisle Vanem)
208 - Added another sample application; acountry.c which converts an
209 IPv4-address(es) and/or host-name(s) to country-name and country-code.
210 This uses the service of the DNSBL at countries.nerd.dk.
212 * December 3 2007 (Daniel Stenberg)
214 - Brad Spencer fixed the configure script to assume that there's no
215 /dev/urandom when built cross-compiled as then the script cannot check for
218 - Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat
220 Version 1.5.1 (Nov 21, 2007)
222 * November 21 2007 (Daniel Stenberg)
224 - Robin Cornelius pointed out that ares_llist.h was missing in the release
227 Version 1.5.0 (Nov 21, 2007)
229 * October 2 2007 (Daniel Stenberg)
231 - ares_strerror() segfaulted if the input error number was out of the currently
234 - Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in
235 internal function init_id_key() under low memory conditions.
237 * September 28 2007 (Daniel Stenberg)
239 - Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI
240 and API changes in the progress callback (and possibly more coming up from
243 * September 28 2007 (Steinar H. Gunderson)
245 - Don't skip a server if it's the only one. (Bugfix from the Google tree.)
247 - Made the query callbacks receive the number of timeouts that happened during
248 the execution of a query, and updated documentation accordingly. (Patch from
251 - Support a few more socket options: ARES_OPT_SOCK_SNDBUF and
254 - Always register for TCP events even if there are no outstanding queries, as
255 the other side could always close the connection, which is a valid event
256 which should be responded to.
258 * September 22 2007 (Daniel Stenberg)
260 - Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in
261 several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that
262 if it fails and the socket is closed the following code doesn't try to use
265 - Steinar H. Gunderson modified c-ares to now also do to DNS retries even when
266 TCP is used since there are several edge cases where it still makes sense.
268 - Brad House provided a fix for ares_save_options():
270 Apparently I overlooked something with the ares_save_options() where it
271 would try to do a malloc(0) when no options of that type needed to be saved.
272 On most platforms, this was fine because malloc(0) doesn't actually return
273 NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM.
275 * July 14 2007 (Daniel Stenberg)
277 - Vlad Dinulescu fixed two outstanding valgrind reports:
279 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short
280 int variable) with qid, which is declared as an int variable. Moreover,
281 DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID
282 sets only the first two bytes of qid. I think that qid should be declared as
283 "unsigned short" in this function.
285 2. The same problem occurs in ares_process.c, process_answer() . query->qid
286 (an unsigned short integer variable) is compared with id, which is an
287 integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets
288 only the first two bytes of id. I think that the id variable should be
289 declared as "unsigned short" in this function.
291 Even after declaring these variables as "unsigned short", the valgrind
292 errors are still there. Which brings us to the third problem.
294 3. The third problem is that Valgrind assumes that query->qid is not
295 initialised correctly. And it does that because query->qid is set from
296 DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And
297 qbuf has uninitialised bytes because of channel->next_id . And next_id is
298 set by ares_init.c:ares__generate_new_id() . I found that putting short r=0
299 in this function (instead of short r) makes all Valgrind warnings go away.
300 I have studied ares__rc4() too, and this is the offending line:
302 buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62)
304 This is what triggers Valgrind.. buffer_ptr is unitialised in this function,
305 and by applying ^= on it, it remains unitialised.
307 Version 1.4.0 (June 8, 2007)
309 * June 4 2007 (Daniel Stenberg)
311 - James Bursa reported a major memory problem when resolving multi-IP names
312 and I found and fixed the problem. It was added by Ashish Sharma's patch
315 When I then tried to verify multiple entries in /etc/hosts after my fix, I
316 got another segfault and decided this code was not ripe for inclusion and I
321 - Brad Spencer found and fixed three flaws in the code, found with the new
322 gcc 4.2.0 warning: -Waddress
324 - Brad House fixed VS2005 compiler warnings due to time_t being 64bit.
325 He also made recent Microsoft compilers use _strdup() instead of strdup().
327 - Brad House's man pages for ares_save_options() and ares_destroy_options()
330 - Ashish Sharma provided a patch for supporting multiple entries in the
331 /etc/hosts file. Patch edited for coding style and functionality by me
336 - Shmulik Regev brought cryptographically secure transaction IDs:
338 The c-ares library implementation uses a DNS "Transaction ID" field that is
339 seeded with a pseudo random number (based on gettimeofday) which is
340 incremented (++) between consecutive calls and is therefore rather
341 predictable. In general, predictability of DNS Transaction ID is a well
342 known security problem (e.g.
343 http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based
344 implementation vulnerable to DNS poisoning. Credit goes to Amit Klein
345 (Trusteer) for identifying this problem.
347 The patch I wrote changes the implementation to use a more secure way of
348 generating unique IDs. It starts by obtaining a key with reasonable entropy
349 which is used with an RC4 stream to generate the cryptographically secure
352 Note that the key generation code (in ares_init:randomize_key) has two
353 versions, the Windows specific one uses a cryptographically safe function
354 provided (but undocumented :) by the operating system (described at
355 http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The
356 default implementation is a bit naive and uses the standard 'rand'
357 function. Surely a better way to generate random keys exists for other
360 The patch can be tested by using the adig utility and using the '-s' option.
362 - Brad House added ares_save_options() and ares_destroy_options() that can be
363 used to keep options for later re-usal when ares_init_options() is used.
365 Problem: Calling ares_init() for each lookup can be unnecessarily resource
366 intensive. On windows, it must LoadLibrary() or search the registry
367 on each call to ares_init(). On unix, it must read and parse
368 multiple files to obtain the necessary configuration information. In
369 a single-threaded environment, it would make sense to only
370 ares_init() once, but in a heavily multi-threaded environment, it is
371 undesirable to ares_init() and ares_destroy() for each thread created
374 Solution: Create ares_save_options() and ares_destroy_options() functions to
375 retrieve and free options obtained from an initialized channel. The
376 options populated can be used to pass back into ares_init_options(),
377 it should populate all needed fields and not retrieve any information
378 from the system. Probably wise to destroy the cache every minute or
379 so to prevent the data from becoming stale.
381 - Daniel S added ares_process_fd() to allow applications to ask for processing
382 on specific sockets and thus avoiding select() and associated
383 functions/macros. This function will be used by upcoming libcurl releases
384 for this very reason. It also made me export the ares_socket_t type in the
385 public ares.h header file, since ares_process_fd() uses that type for two of
390 - Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows
391 that could cause it to return a bad return code.
395 - Yang Tse: Provide ares_getopt() command-line parser function as a source
396 code helper function, not belonging to the actual c-ares library.
400 - Vlad Dinulescu added ares_parse_ns_reply().
404 - Yang Tse: Fix failure to get the search sequence of /etc/hosts and
405 DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when
406 /etc/resolv.conf did not exist or was unable to read it.
410 - Install ares_dns.h too
412 - Michael Wallner fixed this problem: When I set domains in the options
413 struct, and there are domain/search entries in /etc/resolv.conf, the domains
414 of the options struct will be overridden.
418 - Yang Tse removed a couple of potential zero size memory allocations.
420 - Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel)
421 broke in the 1.3.2 release. We should switch to a system where that file is
422 auto-generated. We could rip some code for that from curl...
424 Version 1.3.2 (November 3, 2006)
428 - Prevent ares_getsock() to overflow if more than 16 sockets are used.
432 - Guilherme Balena Versiani: I noted a strange BUG in Win32 port
433 (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network
434 by hand or disconnect the network cable in Windows 2000 or Windows XP, my
435 application gets 127.0.0.1 as the only name server. The problem comes from
436 'GetNetworkParams' function, that returns the empty string "" as the only
437 name server in that case. Moreover, the Windows implementation of
438 inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE.
444 o made ares_version.h use extern "C" for c++ compilers
445 o fixed compiler warnings in ares_getnameinfo.c
446 o fixed a buffer position init for TCP reads
450 - Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and
453 Version 1.3.1 (June 24, 2006)
457 - Gisle Vanem added getopt() to the ahost program. Currently accepts
458 only [-t {a|aaaa}] to specify address family in ares_gethostbyname().
462 - (wahern) Removed "big endian" DNS section and RR data integer parser
463 macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise
464 operations in C operate on logical values. And in any event the octets are
465 already in big-endian (aka network) byte order so they're being reversed
466 (thus the source of the breakage).
470 - William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls
473 TODO: Handle one last EAGAIN for a UDP socket send(2) in
478 - Bram Matthys brought my attention to a libtool peculiarity where detecting
479 things such as C++ compiler actually is a bad thing and since we don't need
480 that detection I added a work-around, much inspired by a previous patch by
481 Paolo Bonzini. This also shortens the configure script quite a lot.
485 - Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes
486 c-ares call a callback on socket state changes. A better way than the
487 ares_getsock() to get full control over the socket state.
491 - Alexander Lazic improved the getservbyport_r() configure check.
495 - Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS
496 variable for easier controlling what it does and how it runs.
500 - James Bursa fixed c-ares to find the hosts file on RISC OS, and made it
501 build with newer gcc versions that no longer defines "riscos".
505 - Daniel Stenberg added ares_getsock() that extracts the set of sockets to
506 wait for action on. Similar to ares_fds() but not restricted to using
507 select() for the waiting.
511 - Yang Tse fixed some send() / recv() compiler warnings
515 - Added constants that will be used by ares_getaddrinfo
517 - Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it
518 is available to ensure it works properly in a threaded environment.
522 - configure fix for detecting a member in the sockaddr_in6 struct which failed
523 on ipv6-enabled HP-UX 11.00
525 Version 1.3.0 (August 29, 2005)
529 - Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info()
530 when getting the DNS server etc.
534 - Added some checks for the addrinfo structure.
540 Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a
541 read event can come back from poll() on a valid SOCK_DGRAM socket but
542 recv(2) will still block. This patch doesn't ignore EAGAIN in
543 read_udp_packets(), though maybe it should. (This patch was edited by Daniel
544 Stenberg and a new configure test was added (imported from curl's configure)
545 to properly detect what non-blocking socket approach to use.)
547 I'm not quite sure how this was happening, but I've been seeing PTR queries
548 which seem to return empty responses. At least, they were empty when calling
549 ares_expand_name() on the record. Here's a patch which guarantees to
550 NUL-terminate the expanded name. The old behavior failed to NUL-terminate if
551 len was 0, and this was causing strlen() to run past the end of the buffer
552 after calling ares_expand_name() and getting ARES_SUCCESS as the return
553 value. If q is not greater than *s then it's equal and *s is always
554 allocated with at least one byte.
558 - Added ares_getnameinfo which mimics the getnameinfo API (another feature
559 that could use testing).
563 - Added an inet_ntop function from BIND for systems that do not have it.
567 - Made sortlist support IPv6 (this can probably use some testing).
569 - Made sortlist support CIDR matching for IPv4.
573 - Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist
574 does not work with IPv6. Also provided an implementation of bitncmp from
575 BIND for systems that do not supply this function. This will be used to add
576 IPv6 support to sortlist.
578 - Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family.
579 The function can lookup IPv6 addresses both from files (/etc/hosts) and
584 - Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac
589 - Dominick Meglio: Provided implementations of inet_net_pton and inet_pton
590 from BIND for systems that do not include these functions.
594 - Dominick Meglio added ares_parse_aaaa_reply.c and did various
595 adjustments. The first little steps towards IPv6 support!
599 - Fixed the VC project and makefile to use ares_cancel and ares_version
603 - The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw.
606 Version 1.2.1 (October 20, 2004)
610 - Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital
611 when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for
612 other OSes. He made c-ares check for and understand it if present.
614 - Now c-ares will use local host name lookup _before_ DNS resolving by default
615 if nothing else is told.
619 - Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf
620 file to determine the sequence in which to search /etc/hosts and DNS. So on
621 systems where this order is defined by /etc/host.conf instead of a "lookup"
622 entry in /etc/resolv.conf, c-ares will always default to looking in DNS
623 first, and /etc/hosts second.
627 1) resolv.conf (for the "lookup" line);
628 2) nsswitch.fon (for the "hosts:" line);
629 3) host.conf (for the "order" line).
633 - Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is
634 located in a static location. It assumed
635 C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact,
636 the location of the HOSTS file can be changed via a registry setting.
638 There is a key called DatabasePath which specifies the path to the HOSTS
640 http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx
642 The patch will make c-ares correctly consult the registry for the location
647 - Gisle Vanem fixed the MSVC build files.
651 - Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack.
655 - Harshal Pradhan made a minor syntax change in ares_init.c to make it build
660 - Made the lib get built static only if --enable-debug is used.
664 Basically in loops like handle_errors(), 'query->next' was assigned a local
665 variable and then query was referenced after the memory was freed by
666 next_server(). I've changed that so next_server() and end_query() returns
667 the next query. So callers should use this ret-value.
669 The next problem was that 'server->tcp_buffer_pos' had a random value at
670 entry to 1st recv() (luckily causing Winsock to return ENOBUFS).
672 I've also added a ares_writev() for Windows to streamline the code a bit
676 - Fixed a few variable return types for some system calls. Made configure
677 check for ssize_t to make it possible to use that when receiving the send()
678 error code. This is necessary to prevent compiler warnings on some systems.
680 - Made configure create config.h, and all source files now include setup.h that
681 might include the proper config.h (or a handicrafted alternative).
683 - Switched to 'ares_socket_t' type for sockets in ares, since Windows don't
686 - automake-ified and libool-ified c-ares. Now it builds libcares as a shared
687 lib on most platforms if wanted. (This bloated the size of the release
688 archive with another 200K!)
690 - Makefile.am now uses Makefile.inc for the c sources, h headers and man
691 pages, to make it easier for other makefiles to use the exact same set of
694 - Adjusted 'maketgz' to use the new automake magic when building distribution
697 - Anyone desires HTML and/or PDF versions of the man pages in the release
701 - Günter Knauf made c-ares build and run on Novell Netware.
704 - Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp
705 fixes and made ares not use 'errno' to provide further info on Windows.
708 - Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack.
711 - Gisle Vanem's init patch for Windows:
713 The init_by_resolv_conf() function fetches the DNS-server(s)
714 from a series of registry branches.
716 This can be wrong in the case where DHCP has assigned nameservers, but the
717 user has overridden these servers with other prefered settings. Then it's
718 wrong to use the DHCPNAMESERVER setting in registry.
720 In the case of no global DHCP-assigned or fixed servers, but DNS server(s)
721 per adapter, one has to query the adapter branches. But how can c-ares know
722 which adapter is valid for use? AFAICS it can't. There could be one adapter
723 that is down (e.g. a VPN adapter).
725 So it's better to leave this to the IP Helper API (iphlapi) available in
726 Win-98/2000 and later. My patch falls-back to the old way if not available.
729 - James Bursa fixed an init issue for RISC OS.
732 - Nico Stappenbelt reported that when processing domain and search lines in
733 the resolv.conf file, the first entry encountered is processed and used as
734 the search list. According to the manual pages for both Linux, Solaris and
735 Tru64, the last entry of either a domain or a search field is used.
737 This is now adjusted in the code
739 Version 1.2.0 (April 13, 2004)
742 - Updated various man pages to look nicer when converted to HTML on the web
746 - Dirk Manske provided a new function that is now named ares_cancel(). It is
747 used to cancel/cleanup a resolve/request made using ares functions on the
748 given ares channel. It does not destroy/kill the ares channel itself.
750 - Dominick Meglio cleaned up the formatting in several man pages.
753 - Dominick Meglio's new ares_expand_string. A helper function when decoding
754 incoming DNS packages.
756 - Daniel Stenberg modified the Makefile.in to use a for loop for the man page
757 installation to improve overview and make it easier to add man pages.
759 Version 1.1.0 (March 11, 2004)
762 - Gisle Vanem improved build on Windows.
765 - Dan Fandrich found a flaw in the Feb 22 fix.
767 - Added better configure --enable-debug logic (taken from the curl configure
768 script). Added acinclude.m4 to the tarball.
771 - Removed ares_free_errmem(), the function, the file and the man page. It was
772 not used and it did nothing.
774 - Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of
775 compiler warnings on picky compilers.
778 - Dominick Meglio made ares init support multiple name servers in the
779 NameServer key on Windows.
782 - Modified ares_private.h to include libcurl's memory debug header if
783 CURLDEBUG is set. This makes all the ares-functions supervised properly by
784 the curl test suite. This also forced me to add inclusion of the
785 ares_private.h header in a few more files that are using some kind of
786 memory-related resources.
788 - Made the makefile only build ahost and adig if 'make demos' is used.
791 - Dirk Manske made ares_version.h installed with 'make install'
794 - ares_free_errmem() is subject for removal, it is simply present for future
795 purposes, and since we removed the extra parameter in strerror() it won't
797 - configure --enable-debug now enables picky compiler options if gcc is used
798 - fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk
801 Version 1.0.0 (February 3, 2004)
804 - now we produce the libcares.a library instead of the previous libares.a
805 since we are no longer compatible
809 - ares_strerror() has one argument less. This is the first official
810 modification of the existing provided ares API.
814 - Dirk Manske fixed how the socket is set non-blocking.
818 - Dominick Meglio made the private gettimeofday() become ares_gettimeofday()
819 instead in order to not pollute the name space and risk colliding with
820 other libraries' versions of this function.
822 * October 24, 2003. Daniel Stenberg
824 Added ares_version().
826 Version 1.0-pre1 (8 October 2003)
828 - James Bursa made it run on RISC OS
830 - Dominick Meglio made it run fine on NT4
832 - Duncan Wilcox made it work fine on Mac OS X
834 - Daniel Stenberg adjusted the windows port
836 - liren at vivisimo.com made the initial windows port
838 * Imported the sources from ares 1.1.1