unbound/doc/Changelog

9 May 2007: Wouter
	- outside network cleans up waiting tcp queries on exit.
	- fallback to TCP.
	- testbound replay with retry in TCP mode.
	- tpkg test for retry in TCP mode, against ldns-testns server.
	- daemon checks max number of open files and complains if not enough.
	- test where data expires in the cache.

8 May 2007: Wouter
	- outgoing network keeps list of available tcp buffers for outgoing 
	  tcp queries.
	- outgoing-num-tcp config option.
	- outgoing network keeps waiting list of queries waiting for buffer.
	- netevent supports outgoing tcp commpoints, nonblocking connects.

7 May 2007: Wouter
	- EDNS read from query, used to make reply smaller.
	- advertised edns value constants.
	- EDNS BADVERS response, if asked for too high edns version.
	- EDNS extended error reponses once the EDNS record from the query
	  has successfully been parsed.

4 May 2007: Wouter
	- msgreply sizefunc is more accurate.
	- config settings for rrset cache size and slabs.
	- hashtable insert takes argument so that a thread can use its own
	  alloc cache to store released keys.
	- alloc cache special_release() locks if necessary.
	- rrset trustworthiness type added.
	- thread keeps a scratchpad region for handling messages.
	- writev used in netevent to write tcp length and data after another.
	  This saves a roundtrip on tcp replies.
	- test for one rrset updated in the cache.
	- test for one rrset which is not updated, as it is not deemed
	  trustworthy enough.
	- test for TTL refreshed in rrset.

3 May 2007: Wouter
	- fill refs. Use new parse and encode to answer queries.
	- stores rrsets in cache.
	- uses new msgreply format in cache.

2 May 2007: Wouter
	- dname unit tests in own file and spread out neatly in functions.
	- more dname unit tests.
	- message encoding creates truncated TC flagged messages if they do 
	  not fit, and will leave out (whole)rrsets from additional if needed.

1 May 2007: Wouter
	- decompress query section, extremely lenient acceptance.
	  But only for answers from other servers, not for plain queries.
	- compression and decompression test cases.
	- some stats added.
	- example.conf interface: line is changed from 127.0.0.1 which leads
	  to problems if used (restricting communication to the localhost),
	  to a documentation and test address.

27 April 2007: Wouter
	- removed iov usage, it is not good for dns message encoding.
	- owner name compression more optimal.
	- rrsig owner name compression.
	- rdata domain name compression.

26 April 2007: Wouter
	- floating point exception fix in lock-verify.
	- lint uses make dependency
	- fixup lint in dname owner domain name compression code.
	- define for offset range that can be compressed to.

25 April 2007: Wouter
	- prettier code; parse_rrset->type kept in host byte order.
	- datatype used for hashvalue of converted rrsig structure.
	- unit test compares edns section data too.

24 April 2007: Wouter
	- ttl per RR, for RRSIG rrsets and others.
	- dname_print debug function.
	- if type is not known, size calc will skip DNAME decompression.
	- RRSIG parsing and storing and putting in messages.
	- dnssec enabled unit tests (from nlnetlabs.nl and se queries).
	- EDNS extraction routine.

20 April 2007: Wouter
	- code comes through all of the unit tests now.
	- disabled warning about spurious extra data.
	- documented the RRSIG parse plan in msgparse.h.
	- rrsig reading and outputting.

19 April 2007: Wouter
	- fix unit test to actually to tests.
	- fix write iov helper, and fakevent code.
	- extra builtin testcase (small packet).
	- ttl converted to network format in packets.
	- flags converted correctly
	- rdatalen off by 2 error fixup.
	- uses less iov space for header.

18 April 2007: Wouter
	- review of msgparse code.
	- smaller test cases.

17 April 2007: Wouter
	- copy and decompress dnames.
	- store calculated hash value too.
	- routine to create message out of stored information.
	- util/data/msgparse.c for message parsing code.
	- unit test, and first fixes because of test.
		* forgot rrset_count addition.
		* did & of ptr on stack for memory position calculation.
		* dname_pkt_copy forgot to read next label length.
	- test from file and fixes
		* double frees fixed in error conditions.
		* types with less than full rdata allowed by parser.
		  Some dynamic update packets seem to use it.

16 April 2007: Wouter
	- following a small change in LDNS, parsing code calculates the
	  memory size to allocate for rrs.
	- code to handle ID creation.

13 April 2007: Wouter
	- parse routines. Code that parses rrsets, rrs.

12 April 2007: Wouter
	- dname compare routine that preserves case, with unit tests.
	
11 April 2007: Wouter
	- parse work - dname packet parse, msgparse, querysection parse,
	  start of sectionparse.

10 April 2007: Wouter
	- Improved alignment of reply_info packet, nice for 32 and 64 bit.
	- Put RRset counts in reply_info, because the number of RRs can change
	  due to RRset updates.
	- import of region-allocator code from nsd.
	- set alloc special type to ub_packed_rrset_key.
	  Uses lruhash entry overflow chain next pointer in alloc cache.
	- doxygen documentation for region-allocator.
	- setup for parse scratch data.

5 April 2007: Wouter
	- discussed packed rrset with Jelte.

4 April 2007: Wouter
	- moved to version 0.3.
	- added util/data/dname.c
	- layout of memory for rrsets.

3 April 2007: Wouter
	- detect sign of msghdr.msg_iovlen so that the cast to that type
	  in netevent (which is there to please lint) can be correct.
	  The type on several OSes ranges from int, int32, uint32, size_t.
	  Detects unsigned or signed using math trick.
	- constants for DNS flags. 
	- compilation without locks fixup.
	- removed include of unportable header from lookup3.c.
	- more portable use of struct msghdr.
	- casts for printf warning portability.
	- tweaks to tests to port them to the testbed.
	- 0.2 tag created.

2 April 2007: Wouter
	- check sizes of udp received messages, not too short.
	- review changes. Some memmoves can be memcpys: 4byte aligned.
	  set id correctly on cached answers. 
	- review changes msgreply.c, memleak on error condition. AA flag
	  clear on cached reply. Lowercase queries on hashing.
	  unit test on lowercasing. Test AA bit not set on cached reply.
	  Note that no TTLs are managed.

29 March 2007: Wouter
	- writev or sendmsg used when answering from cache.
	  This avoids a copy of the data.
	- do not do useless byteswap on query id. Store reply flags in uint16
	  for easier access (and no repeated byteswapping).
	- reviewed code.
	- configure detects and config.h includes sys/uio.h for writev decl.

28 March 2007: Wouter
	- new config option: num-queries-per-thread.
	- added tpkg test for answering three queries at the same time
	  using one thread (from the query service list).

27 March 2007: Wouter
	- added test for cache and not cached answers, in testbound replays.
	- testbound can give config file and commandline options from the
	  replay file to unbound.
	- created test that checks if items drop out of the cache.
	- added word 'partitioned hash table' to documentation on slab hash.
	  A slab hash is a partitioned hash table.
	- worker can handle multiple queries at a time.

26 March 2007: Wouter
	- config settings for slab hash message cache.
	- test for cached answer.
	- Fixup deleting fake answer from testbound list.

23 March 2007: Wouter
	- review of yesterday's commits.
	- covered up memory leak of the entry locks.
	- answers from the cache correctly. Copies flags correctly.
	- sanity check for incoming query replies.
	- slabbed hash table. Much nicer contention, need dual cpu to see.

22 March 2007: Wouter
	- AIX configure check.
	- lock-verify can handle references to locks that are created
	  in files it has not yet read in.
	- threaded hash table test. 
	- unit test runs lock-verify afterwards and checks result.
	- need writelock to update data on hash_insert.
	- message cache code, msgreply code.

21 March 2007: Wouter
	- unit test of hash table, fixup locking problem in table_grow().
	- fixup accounting of sizes for removing items from hashtable.
	- unit test for hash table, single threaded test of integrity.
	- lock-verify reports errors nicely. More quiet in operation.

16 March 2007: Wouter
	- lock-verifier, checks consistent order of locking.

14 March 2007: Wouter
	- hash table insert (and subroutines) and lookup implemented.
	- hash table remove.
	- unit tests for hash internal bin, lru functions.

13 March 2007: Wouter
	- lock_unprotect in checklocks.
	- util/storage/lruhash.h for LRU hash table structure.

12 March 2007: Wouter
	- configure.ac moved to 0.2.
	- query_info and replymsg util/data structure.

9 March 2007: Wouter
	- added rwlock writelock checking.
	  So it will keep track of the writelock, and readlocks are enforced
	  to not change protected memory areas.
	- log_hex function to dump hex strings to the logfile.
	- checklocks zeroes its destroyed lock after checking memory areas.
	- unit test for alloc.
	- identifier for union in checklocks to please older compilers.
	- created 0.1 tag.

8 March 2007: Wouter
	- Reviewed checklock code.

7 March 2007: Wouter
	- created a wrapper around thread calls that performs some basic
	  checking for data race and deadlock, and basic performance 
	  contention measurement.

6 March 2007: Wouter
	- Testbed works with threading (different machines, different options).
	- alloc work, does the special type.

2 March 2007: Wouter
	- do not compile fork funcs unless needed. Otherwise will give
	  type errors as their typedefs have not been enabled.
	- log shows thread numbers much more nicely (and portably).
	- even on systems with nonthreadsafe libevent signal handling,
	  unbound will exit if given a signal.
	  Reloads will not work, and exit is not graceful.
	- start of alloc framework layout.

1 March 2007: Wouter
	- Signals, libevent and threads work well, with libevent patch and
	  changes to code (close after event_del).
	- set ipc pipes nonblocking.

27 February 2007: Wouter
	- ub_thread_join portable definition.
	- forking is used if no threading is available.
	  Tested, it works, since pipes work across processes as well.
	  Thread_join is replaced with waitpid. 
	- During reloads the daemon will temporarily handle signals,
	  so that they do not result in problems.
	- Also randomize the outgoing port range for tests.
	- If query list is full, will stop selecting listening ports for read.
	  This makes all threads service incoming requests, instead of one.
	  No memory is leaking during reloads, service of queries, etc.
	- test that uses ldns-testns -f to test threading. Have to answer
	  three queries at the same time.
	- with verbose=0 operates quietly.

26 February 2007: Wouter
	- ub_random code used to select ID and port.
	- log code prints thread id.
	- unbound can thread itself, with reload(HUP) and quit working
	  correctly.
	- don't open pipes for #0, doesn't need it.
	- listens to SIGTERM, SIGQUIT, SIGINT (all quit) and SIGHUP (reload).

23 February 2007: Wouter
	- Can do reloads on sigHUP. Everything is stopped, and freed,
	  except the listening ports. Then the config file is reread.
	  And everything is started again (and listening ports if needed).
	- Ports for queries are shared.
	- config file added interface:, chroot: and username:.
	- config file: directory, logfile, pidfile. And they work too.
	- will daemonize by default now. Use -d to stay in the foreground.
	- got BSD random[256 state] code, made it threadsafe. util/random.

22 February 2007: Wouter
	- Have a config file. Removed commandline options, moved to config.
	- tests use config file.

21 February 2007: Wouter
	- put -c option in man page.
	- minievent fd array capped by FD_SETSIZE.

20 February 2007: Wouter
	- Added locks code and pthread spinlock detection.
	- can use no locks, or solaris native thread library.
	- added yacc and lex configure, and config file parsing code.
	  also makedist.sh, and manpage.
	- put include errno.h in config.h

19 February 2007: Wouter
	- Created 0.0 svn tag.
	- added acx_pthread.m4 autoconf check for pthreads from 
	  the autoconf archive. It is GPL-with-autoconf-exception Licensed.
	  You can specify --with-pthreads, or --without-pthreads to configure.

16 February 2007: Wouter
	- Updated testbed script, works better by using make on remote end.
	- removed check decls, we can compile without them.
	- makefile supports LIBOBJ replacements.
	- docs checks ignore compat code.
	- added util/mini-event.c and .h, a select based alternative used with
	  ./configure --with-libevent=no
	  It is limited to 1024 file descriptors, and has less features.
	- will not create ip6 sockets if ip6 not on the machine.

15 February 2007: Wouter
	- port to FreeBSD 4.11 Dec Alpha. Also works on Solaris 10 sparc64,
	  Solaris 9, FreeBSD 6, Linux i386 and OSX powerpc.
	- malloc rndstate, so that it is aligned for access.
	- fixed rbtree cleanup with postorder traverse.
	- fixed pending messages are deleted when handled.
	- You can control verbosity; default is not verbose, every -v
	  adds more verbosity.

14 February 2007: Wouter
	- Included configure.ac changes from ldns.
	- detect (some) headers before the standards check.
	- do not use isblank to test c99, since its not available on solaris9.
	- review of testcode.
		* entries in a RANGE are no longer reversed.
		* print name of file with replay entry parse errors.
	- port to OSX: cast to int for some prints of sizet.
	- Makefile copies ldnstestpkts.c before doing dependencies on it.

13 February 2007: Wouter
	- work on fake events, first fwd replay works.
	- events can do timeouts and errors on queries to servers.
	- test package that runs replay scenarios.

12 February 2007: Wouter
	- work on fake events.

9 February 2007: Wouter
	- replay file reading.
	- fake event setup, it creates fake structures, and teardowns,
	  added signal callbacks to reply to be able to fake those,
	  and main structure of event replay routines.

8 February 2007: Wouter
	- added tcp test.
	- replay storage.
	- testcode/fake_event work.

7 February 2007: Wouter
	- return answer with the same ID as query was sent with.
	- created udp forwarder test. I've done some effort to make it perform
	  quickly. After servers are created, no big sleep statements but
	  it checks the logfiles to see if servers have come up. Takes 0.14s.
	- set addrlen value when calling recvfrom.
	- comparison of addrs more portable.
	- LIBEVENT option for testbed to set libevent directory.
	- work on tcp input.

6 February 2007: Wouter
	- reviewed code and improved in places.

5 February 2007: Wouter
	- Picked up stdc99 and other define tests from ldns. Improved
	  POSIX define test to include getaddrinfo.
	- defined constants for netevent callback error code.
	- unit test for strisip6.

2 February 2007: Wouter
	- Created udp4 and udp6 port arrays to provide service for both
	  address families.
	- uses IPV6_USE_MIN_MTU for udp6 ,IPV6_V6ONLY to make ip6 sockets.
	- listens on both ip4 and ip6 ports to provide correct return address.
	- worker fwder address filled correctly.
	- fixup timer code.
	- forwards udp queries and sends answer.

1 February 2007: Wouter
	- outside network more UDP work.
	- moved * closer to type.
	- comm_timer object and events.

31 January 2007: Wouter
	- Added makedist.sh script to make release tarball.
	- Removed listen callback layer, did not add anything.
	- Added UDP recv to netevent, worker callback for udp.
	- netevent communication reply storage structure.
	- minimal query header sanity checking for worker.
	- copied over rbtree implementation from NSD (BSD licensed too).
	- outgoing network query service work.

30 January 2007: Wouter
	- links in example/ldns-testpkts.c and .h for premade packet support.
	- added callback argument to listen_dnsport and daemon/worker.

29 January 2007: Wouter
	- unbound.8 a short manpage.

26 January 2007: Wouter
	- fixed memleak.
	- make lint works on BSD and Linux (openssl defines).
	- make tags works.
	- testbound program start.

25 January 2007: Wouter
	- fixed lint so it may work on BSD.
	- put license into header of every file.
	- created verbosity flag.
	- fixed libevent configure flag.
	- detects event_base_free() in new libevent 1.2 version.
	- getopt in daemon. fatal_exit() and verbose() logging funcs.
	- created log_assert, that throws assertions to the logfile.
	- listen_dnsport service. Binds ports.

24  January 2007: Wouter
	- cleaned up configure.ac.

23  January 2007: Wouter
	- added libevent to configure to link with.
	- util/netevent setup work.
	- configure searches for libevent.
	- search for libs at end of configure (when other headers and types
	  have been found).
	- doxygen works with ATTR_UNUSED().
	- util/netevent implementation.

22  January 2007: Wouter
	- Designed header file for network communication.

16  January 2007: Wouter
	- added readme.svn and readme.tests.

4 January 2007: Wouter
	- Testbed script (run on multiple platforms the test set).
	  Works on Sunos9, Sunos10, FreeBSD 6.1, Fedora core 5.
	- added unit test tpkg.

3 January 2007: Wouter
	- committed first set of files into subversion repository.
	  svn co svn+ssh://unbound.net/svn/unbound
	  You need a ssh login.  There is no https access yet.
	- Added LICENSE, the BSD license.
	- Added doc/README with compile help.
	- main program stub and quiet makefile.
	- minimal logging service (to stderr).
	- added postcommit hook that serves emails.
	- added first test 00-lint. postcommit also checks if build succeeds.
	- 01-doc: doxygen doc target added for html docs. And stringent test
	  on documented files, functions and parameters.

15 December 2006: Wouter
	- Created Makefile.in and configure.ac.