2008-10-15  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.80 is released

2008-07-08  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Tighten up the check for a robots tag so
	that nofollow text later in the document won't be matched, thus
	skipping the whole document, bug 2005950.

2007-05-05  Brandon Bell  <Brandon_Bell@bcit.ca>

	* checkbot: mms scheme can be ignored safely.

2007-04-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printAllServers): Clarify that 'Unique links' actually
	is 'Documents scanned'.

2007-02-26  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Handle the case where decoded_content is
	not available as per bug 1665075.

2007-02-26  Gerald Preifer  <gerald@pfeifer.com>

	* checkbot (check_point): Simplify and add a comment.

2007-02-26  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Require LWP 5.803 or better. decoded_content got
	added in 5.802 and 5.803 added some important bugfixes.

2007-02-03  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.79 is released

	* RELEASE-PROCESS: Add the release process documentation.

2007-01-27  Gerald Pfeifer  <gerald@pfeifer.com>

	* checkbot (init_suppression): Check and provide error if
	suppression file is in fact a directory.

2006-12-28  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Add summary to tables to make files XHTML 1.1 compliant.

2006-11-16  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Parse the decoded content so that all
	character set issues are dealt with before parsing. This solves
	bug 1264729.

2006-11-14  Hans de Graaff  <hans@degraaff.org>

	* checkbot (performRequest): Simplify the code dealing with
	problems of HEAD requests by retrying all 500 reponses instead of
	special-cases particular failures that we happen to know
	about. This type of problem is all to common, and if there really
	is a problem GET will find it anyway.
	(add_error): Allow regular expressions in the suppression
	file. Based on patch from Eric Noack

2006-11-14  Eric Noack  <en@lightwerk.com>

	* checkbot (send_mail): Indicate how many errors are detected in
	the notification email's subject.
	(handle_doc): Use the URL with which the document was received for
	the problem reports and internal accounting, but keep on using the
	proper base URL as defined by the reponse object when retrieving
	links from the document. This fixes the case where a weird BASE
	URL in a document could make it unclear where the actual problem
	was.

2006-10-28  Hans de Graaff  <hans@degraaff.org>

	* checkbot (performRequest): Handle case where an FTP server may
	not be able to handle a HEAD request. This may cause a lot of data
	to be transferred in those cases.

2006-05-03  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.78 is released

2005-12-18  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Make pages XHTML compliant again.

2005-12-18  Jens Schweikhardt  <schweikh@schweikhardt.net>

	* checkbot: Add classes and ids so that more styling options for
	CSS are available.
	* checkbot2.css: Example CSS file using the new classes and ids.

2005-11-11  Hans de Graaff  <hans@degraaff.org>

	* checkbot: React in a more subtle way if the Time::Duration
	module is not found.

2005-09-22  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Check for presence of Net::SSL and explain the
	effects if this it not present.

2005-08-20  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Ignore some 'links' found by LinkExtor
	which do not need to link to live links. Fixed bugs #1264447 and
	#1107832. 

	* test.html: Add test cases for it.

2005-08-06  Hans de Graaff  <hans@degraaff.org>

	* checkbot (performRequest): Switch from HEAD to GET on a 400
	error, as the most likely cause is that the server has trouble
	with HEAD requests.

2005-08-05  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Also show how many new links are found on
	a page, not just the total number of links.
	(performRequest): Don't retry GET method on a 403 error.
	(handle_doc): Properly handle newlines in the matches for title
	and robots meta tag.

2005-07-28  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.77 is released.

	* checkbot: Fix use of $VERSION so that it compiles and can be
	used by MakeMaker at the same time.
	(handle_doc): Check for presence of robots meta tag and act on it.
	Based on a patch by Donald Willingham.

2005-07-25  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.76 is released.

2005-06-07  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Include title of page.
	(handle_doc): Extract title for later printing.
	Add new hash url_title to store page titles.
	Based on a patch from John Bintz.

2005-04-23  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Add documentation on use of file:/// URLs.

2005-01-23  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Only send mail when Checkbot has detected any
	problems, based on suggestion from Thomas Kuerten.

	Print duration of run on final report, and refactor use of start
	time variable to facilitate this. Feature depends on availability
	of Time::Duration, but checkbot will work without it. Based on
	patch from Adam Griff.

2005-01-23  Adam Griff <griff@computer.org>
	
	* checkbot (create_page): Print out more options on results page.
	
2005-01-21  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Remove automatic version number based on CVS version
	now that commits will be more frequent than releases.

2004-11-12  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_url): Ignore javascript: URLs instead of
	generating a 904 error. It would be nice to handle these as well.

2004-05-26  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Sync HTML::Parser requirement with required
	versions of libwww-perl.

2004-05-03  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Write better documentation for --file option.

2004-04-26  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Minor documentation changes thank to Jens
	Schweikhardt.

2004-04-22  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.75 is released.

2004-04-21  Hans de Graaff  <hans@degraaff.org>

	* checkbot (print_help): Use a here-doc for the help for easier
	maintenance.
	(init_modules): Add --noproxy options to set list of domains which
	will not be passed through the proxy.

2004-04-18  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_url): Create an error if an unknown scheme is
	encountered and only ignore known schemes like mailto:

2004-03-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Add explanation about error message which indicates
	lack of SSL support.

2004-03-28  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Add EXAMPLES section to the perldoc documentation with
	an example of the most simple invocation. Needs more examples...
	Update help text for --mailto to confirm that more than one
	address is possible.

	* checkbot: Add new --cookies option to accept cookies from
	servers. Based on patch from Roger Pilkey.

2004-02-09  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Show correct text if LWP test fails.

2004-01-05  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Now require LWP 5.76 to avoid problems with 500
	"Need a field name" HTTP errors being generated by LWP.

2003-12-29  Gerald Pfeifer  <gerald@pfeifer.com>

	* checkbot: Improve description of --proxy.
	(print_help): Ditto.

2003-12-21  Hans de Graaff  <hans@degraaff.org>

	* checkbot (performRequest): $url->authority may not be defined
	for the URL we are checking.

2003-12-17  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.74 is released

	* checkbot (add_error): Take into account that status message can
	be undefined.

2003-12-15  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Put Checkbot errors in a hash to have one set of
	descriptions around.
	(handle_doc): Use it.
	(checkbot_status_message): Use it to ind the status message for a
	code from HTTP codes, Checkbot codes, or a generic status message.
	(printServerProblems): Use it.
	(handle_url): Move checks for --dontwarn and --suppression
	features from here ...
	(add_error): ... to here so that it applies to all errors.

2003-12-14  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Document that Checkbot defines its own response codes
	for common problems.
	No longer a need for the %warning hash.
	(add_error): New function to add a new error into the hashes.
	(handle_url): Use it.
	(handle_doc): Use it for what previously were warnings.
	(printServerWarnings): Obsolete as warnings have been changed to
	use the normal error handling routines.
	Marked --allow-simple-hosts option as deprecated, because this can
	now be handled in a more generic way by the --dontwarn mechanism.
	(print_help): Removed --allow-simple-hosts option from help.
	(add_to_queue): Move code to check for double slash in URL to ...
	(handle_doc): ... here as Checkbot error 903.

2003-11-29  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Oops. Make sure all output is
	going to the right file, not stdout.
	Add new --suppress option which reads a file with response code /
	URL combinations to be suppressed in the output, based on patch by
	Rob Chekaluk.
	(init_suppression): Read suppresson file and fill has with
	results.
	(handle_url): Use it.
	(print_help): Document it.

2003-11-24  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Add example to --ignore argument.

2003-11-23  Hans de Graaff  <hans@degraaff.org>

	* checkbot (init_modules): Delete commented-out code to enable
	HTTP 1.1 in LWP. HTTP 1.1 has been the default in LWP for a while
	and does not need special code to be enabled.

2003-11-21  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Don't assume that status_message
	is defined for all possible codes, based on patch by Thomas
	Kuerten.

2003-10-18  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Require LWP 5.70 because problems with HEAD of
	ftp:// links have been solved in this release.

2003-09-05  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Put line breaks in HTML file in
	a more logical place.

2003-08-31  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.73 released

2003-08-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Protect against undefined status.

2003-08-29  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): Ignore URIs matching --ignore as they are
	being found.
	(handle_url): Remove check for --ignore option here.
	Update documentation for --ignore.
	(print_help): Idem.

2003-08-21  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Made --interval description a bit more clear.

2003-07-26  Hans de Graaff  <hans@degraaff.org>

	* checkbot (init_modules): Uncomment proxy support, but it now
	applies to all requests, not just external ones.
	(print_help): Update --proxy help text.
	Update perldoc documentation.

2003-07-05  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Additional explanation for --exclude option.

2003-06-28  Bernd Petrovitsch  <bernd@firmix.at>

	* checkbot.css: Additional cleaning up of the CSS file.

2003-06-26  Bernd Petrovitsch  <bernd@firmix.at>

	* checkbot: Produce valid XHTML 1.1 pages.

	* checkbot.css: Clean up of the CSS file.

2003-05-04  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.72 released
	
	* checkbot: Applied spelling fixes from Jens Schweikhardt.
	(clean_up): Factored out of check_links so that it can also be
	called when we catch a signal.
	(got_signal): Catch signals like SIGINT and handle them, based on
	patch by Jens Schweikhardt.

2003-04-06  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_url): No longer ignore URLs with a query
	string. If checking these is not wanted then the --exclude option
	can be used, and an example for this is now included in the
	documentation.

2003-03-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot (printServerProblems): Add links to different error
	codes on a server page for quick navigation.

2003-02-22  Paul Merchant, Jr.  <Paul.L.Merchant.Jr@Dartmouth.EDU>

	* checkbot: Initialize the statistics counters to avoid warnings.

2003-01-15  Hans de Graaff  <hans@degraaff.org>

	* checkbot (output): Correct the check for --verbose; not
	specifying it now generates no output.

2003-01-06  Hans de Graaff  <hans@degraaff.org>

	* checkbot (handle_doc): The host name check does not make much
	sense for news: scheme URLs.

2003-01-03  Hans de Graaff  <hans@degraaff.org>

	* checkbot (init_globals): Only remove file from default --match
	argument when there is a path component in the start URL.
	Initialize problem counter to avoid warning about uninitialized
	value.

2002-12-29  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.71 released
	
	* checkbot (handle_url): Make sure we feed is_internal a string.
	(handle_url): Use existing variable instead of Referer header to
	store parent URL.

	* Checkbot 1.70 created for testing, but not released

	* checkbot (performRequest): Add HTTP 403 error to list of error
	codes to retry with a GET.
	(handle_url): Only follow redirections for internal links.

2002-12-28  Hans de Graaff  <hans@degraaff.org>

	* checkbot: Removed reference to AnyDBM_File because it is not
	used anywhere.
	Rewrote global statistics gathering to be more simple and more
	accurate.
	Added --filter option which allows rewriting of URLs before they
	are checked, based on patch from Eli the Bearded <eli@netusa.net>.
	Simplified storage of URLs with problems
	(get_headers): Removed.
	(performRequest): Included code from get_headers here.
	(count_problems): Updated for new storage of URLs
	(printServerProblems): Idem.
	(handle_url): Idem.
	(handle_doc): Idem.
	(count_problems): Idem.
	(printServerProblems): Idem.
	(handle_doc): Add code to report all pages on which a problematic
	URL appears.
	(init_globals): Changed default --match argument to exclude final
	page name.
	

2002-12-27  Hans de Graaff  <hans@degraaff.org>

	* checkbot (output): Moved printing, including indentation and
	verbose checking, to function 'output'.
	(handle_doc): No more distinction between internal and external
	links, we throw all links found in the queue.
	(handle_doc): Removed statistics for now, they are too buggy.
	(is_checked): New function takes into account that we sometimes
	translate hostnames to IP addresses.
	(handle_doc): Use it.
	(check_internal): Removed dependency on statistics, use actual
	queue contents to determine when all links are checked.
	(handle_url): Only query server for file type on
	application/octet-stream documents.
	(is_internal): New function to determine if URL is internal.
	(handle_url): Rewritten to use new functions and to deal with
	external URLs being mixed in, and generally cleaned up.
	(handle_url): Moved --internal-only checks here.
	(check_external): Removed.
	(check_links): Renamed from check_internal.
	Added small blurb to documentation on distinction between internal
	and external links and the way checkbot checks these.

	* t/test.t: Added simple test case: can checkbot be run without
	arguments?

2002-12-25  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.69 released

2002-12-25  Hans de Graaff  <hans@degraaff.org>

	* checkbot (get_headers): Make sure feedback on HEAD requests gets
	indented properly.

2002-12-23  Hans de Graaff  <hans@degraaff.org>

	* checkbot (init_globals): Anchor automatic match argument based
	on start URLs at the beginning.

2002-12-16  Jens Schweikhardt  <schweikh@schweikhardt.net>

	* checkbot (check_external): Fixed printf to be print so that
	actual information can be printed using --verbose.

2002-12-02  Hans de Graaff  <hans@degraaff.org>

	* checkbot (get_headers): Also add 406 as an error which might
	indicate that the web server doesn't like us doing a HEAD, so GET
	instead.

2002-12-01  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Updated based on libwww-perl Makefile.PL.

	* checkbot: Remove the preamble cruft and just assume perl will be
	/usr/bin/perl. Therefore also renamed checkbot.pl -> checkbot.
	Indicate that Checkbot is licensed under the same terms as Perl
	itself.

	* checkbot.pl (count_problems): Rewrote debugging code to handle
	request without header() method, even though this should not be
	possible it does happen in the wild. 
	(handle_doc): Perform fully-qualified hostname check for all URI's
	which support a hostname.

2002-11-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (add_checked): Use ->can construct to check if URL
	supports host method.

2002-10-27  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl: Add hints for recursive or run-away checkbot
	processes.

2002-09-28  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.68 released

2002-08-05  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (handle_doc): Comment out warning about external
	URLs with non-checkable schemes to avoid lots of useless output.

2002-06-09  Jostle Lemcke  <jostle@users.sourceforge.net>

	* checkbot.pl: Added --allow-simple-hosts option. This option
	turns off the warnings for unqualified host names.

2002-04-01  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (handle_doc): Ignore URLs found in <base>
	tags. Suggestion from Roman Maeder.

2002-03-31  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (print_help): Mention --style option in help message.
	(check_internal): Always close CURRENT filehandle, and add warn
	for potential problems with this based on patch and report from
	Greg Larkin.

	* checkbot.pl: Added HINTS AND TIPS section to
	documentation. Added hint on using passive FTP based on feedback
	from Roman Maeder.

2002-03-31  Brent Verner  <brent@rcfile.org>

	* checkbot.pl (handle_doc): Only match http and https, not stuff
	like httpa.

2002-03-31  Paco Hope  <paco@paco.to>

	* checkbot.css: Contributed style sheet for Checkbot. Use with
	--style option.

2002-01-20  Roman Maeder  <maeder@mathconsult.ch>

	* checkbot.pl (handle_url): Use select() to sleep instead of
	sleep() so that sleep interval can be fractional.

2001-12-16  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.67 released

2001-11-16  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl: Add example for --match argument based on question
	by Michael Lambert.

2001-11-11  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (count_problems): Quote meta characters in server
	name and URL when matching them.
	(handle_doc): Fix two minor bugs related to the move to URI.

2001-11-11  Evaldas Imbrasas  <evaldas@wolfram.com>

	* checkbot.pl: Add --language option to allow language
	negotiation.

	* checkbot.pl (check_options): Set default for --sleep option to 0.

	* checkbot.pl (check_internal): Only close <CURRENT> if it already
	exists.
	
2001-11-03  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (printServerProblems): There might not be a response
	message.
	(handle_url): Use status_line instead of code and message for
	HTTP::Response object.
	(handle_doc): Also check external gopher links.

2001-10-25  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.66 released

	* checkbot.pl (get_headers): URI doesn't know about netloc, but it
	does know about authority.
	(get_headers): $url is already absolute, no need for ->abs

2001-10-18  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.65 released

2001-10-14  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (handle_doc): Print a notice when external non
	HTTP/FTP URLs are dropped.

2001-09-29  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (init_modules and other places): Remove
	URI::URL::strict call and use of new URI::URL because it is
	obsolete, we should use the URI classes now.

2001-09-23  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (init_globals): Initialize last checkpoint time with
	0 instead of current time, so that we write out a set of pages
	right at the start. This will catch problems with permissions for
	these pages as early as possible.

2001-07-01  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (get_server_type): Take into account that we might
	not learn anything about the server

2001-05-06  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (get_headers): Factored out of check_external so
	that moving to using GET requests only will be easier later.

2001-04-30  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (send_mail): Really fix printing of starting URLs in
	email. All URLs are now printed in the subject and body of the
	message.

2001-04-15  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.64 released

2001-03-13  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (send_mail): Fix printing of starting URL in email.

2001-03-04  Nick Hibma <n_hibma@qubesoft.com>

	* checkbot.pl (printServerWarnings): Removed duplicate print statement.

2001-02-10  Boris Lantrewitz <lantrewi@do.isst.fhg.de>

	* checkbot.pl (init_globals): Allow more environment variables to
	be used to set the temporary directory.
	(send_mail): Avoid using printf to the handle for those systems
	where printf on a pipe is not implemented.

2001-01-14  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.63 released

2001-01-02  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL (chk_version): Require LWP 5.50, which contains an
	important bugfix when dealing with relative redirects.

2001-01-01  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (init_globals): If no --match is given, construct
	one based on all the start URLs given. Suggested by Mathieu
	Guillaume.

2000-12-31  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (create_page): Remove the .bak file when the new
	file is written, unless --debug is in effect.

2000-12-31  OBARA Kiyotake <obara@vc-net.ne.jp>

	* checkbot.pl (print_server): Create correct URLs when --file
	argument contains directories as well as a filename.

2000-12-31  David Brownlee <abs@purplei.com>

	* checkbot.pl (create_page): Fix typo in die message.

2000-12-24  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl: Added a small blurb in the documentation about the
	URLs Checkbot will find and check.

2000-12-24  Petter Reinholdtsen <pere@hungry.com>

	* checkbot.pl (handle_url): Deal with redirect responses without
	Location header.

2000-11-18  Roman Maeder  <maeder@mathconsult.ch>

	* checkbot.pl (handle_url): Remove check which would not check
	files named the same as the main report file. If you don't want
	Checkbot to check its intermediate pages, use the --exclude
	option.

	* checkbot.pl (handle_url): Ask server for file type when
	requesting http:// URLs to be on the safe side, as using
	guess_media_type() is not always correct.

2000-10-28  Nick Hibma  <n_hibma@qubesoft.com>

	* checkbot.pl (check_external): Only print when --verbose is true.
	(printServerProblems): Fix proper printing of <hr>.
	(handle_doc): Include proper URL for report for unqualified URLs.

2000-10-01  TAKAKU Masao  <masao@ulis.ac.jp>

	* checkbot.pl (print_server): Make pages well-formed by inserting
	<html> and <body> tags.

2000-09-24  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.62 released

2000-09-16  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (send_mail): Only mention URL in the subject of the
	mail if one is given through the --url option.
	(check_external): The ALEPH web server is also broken with respect
	to HEAD requests.

2000-09-04  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (check_external): JavaWebServer is also broken with
	respect to HEAD requests.

2000-08-26  Hans de Graaff  <hans@degraaff.org>

	* checkbot.pl (create_page): Add --style option which allows a
	link to a CSS file to be included in each Checkbot page.

2000-08-20  Nick Hibma  <n_hibma@qubesoft.com>

	* checkbot.pl (check_external): Some servers don't set the Server:
	header. Check to see if the server field is set in a response to
	avoid warnings.

	* checkbot.pl (add_checked): Add --enable-virtual option to use
	hostname instead of IP address to distinguish servers. This allows
	checking of multiple virtual servers.

2000-08-13  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL: Add a check for HTML::Parser. Require latest
	version, 3.10, because I'm not sure older versions work correctly.

2000-06-29  Hans de Graaff  <hans@degraaff.org>

	* Checkbot 1.61 released

	* Makefile.PL (chk_version): Add version checked for in output.

2000-06-18  Larry Gilbert <larry@n2h2.com>

	* checkbot.pl (check_external): Use GET instead of HEAD for
	confused closed-source servers.

2000-06-18  Hans de Graaff  <hans@degraaff.org>

	* Makefile.PL (chk_version): require URI 1.07 as it contains bug
	fixes for using Base URLs.

	* checkbot.pl: Change email and web address

2000-04-30  Hans de Graaff <graaff@xs4all.nl>

	* Checkbot 1.60 released

	* checkbot.pl (check_options): Add option --dontwarn to exclude
	certain types of warnings. Based on idea by David Hoekman.

2000-04-29  Mark Roedel <roedelm@letu.edu>

	* checkbot.pl (handle_url): Deal with "300 Multiple Choices"
	response which does not offer a URL to redirect to.

2000-04-09  David Hoekman <dhoekman@halcyon.com>

	* checkbot.pl (init_globals): Allow for TMPDIR with or without
	trailing /

2000-04-08  Hans de Graaff  <Hans de Graaff <graaff@xs4all.nl>>

	* checkbot.pl: Updated contact information in file header.

2000-03-26  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (check_options): Add message about skipping of
	external links. Also removes warning about single use of variable.

2000-03-06  Brian McNett <webmaster@mycoinfo.com>

	* checkbot.pl: On a Mac, ask command line options
	through MacPerl mechanism.

2000-02-06  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (init_globals): Check wether URLs on the command
	line have a proper host. Thanks to Charles Williams for the
	report.

2000-01-30  Hans de Graaff  <graaff@xs4all.nl>

	* Checkbot 1.59 released

	* checkbot.pl (handle_doc): Use eof instead of parse(undef) to end
	parsing.

2000-01-15  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_doc): Show warnings about hostnames only on
	the console when --verbose.

2000-01-09  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl: Added option --internal-only to skip checking of
	external links altogether. Idea by David Hoekman
	<dhoekman@halcyon.com>

2000-01-02  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_doc): Use canonical URI from LinkExtor,
	which simplifies the rest of the logic and gets things working
	with the new version of LinkExtor.

2000-01-01  Stephane Bortzmeyer <bortzmeyer@pasteur.fr>

	* checkbot.pl (init_globals): Create Checkbot workdir in $TMPDIR
	if defined, /tmp otherwise.

1999-12-31  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_doc): Change frag to fragment.

1999-11-07  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_doc): Add warning for URLs for which LWP
	can't determine a hostname, and don't check them further.

1999-10-24  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (print_help): Added line on --interval option.

1999-10-23  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (init_globals): Fixed proper determination of server
	prefix if a filename is supplied, thanks to Michael Baumer.

1999-10-02  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (init_modules): Added use URI.

1999-08-21  Hans de Graaff  <graaff@xs4all.nl>

	* Makefile.PL (chk_version): Added check for URI.

1999-07-17  Hans de Graaff  <graaff@xs4all.nl>

	* README: Added blurb on the announcements mailing list.

1999-07-06  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (add_checked): Deal with the fact that a mailto: URL 
	has no host component. Thanks to John Croft for the report.

1999-06-27  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_url): Really fix relative redirection URLs
	using the URI class. Thanks for Thomas Zander for the report and
	reproducible failing URL.

1999-05-03  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (printServerWarnings): Also change clustering of URLs.

1999-05-02  Hans de Graaff <graaff@xs4all.nl>

	* checkbot.pl (signature): Add quotes around the URL in the
	signature.
	(printServerProblems): Fixed clustering of URLs so that faulty
	links are listed under the URL that contains them, instead of the
	other way around. This ordering problem was introduced in 1.53.

1999-04-10  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_url): Make sure a redirected URL is fully
	qualified (based on the original URL) to avoid dying on it
	later. Thanks to David Hoekman for the initial analysis.

1999-04-05  Hans de Graaff <graaff@xs4all.nl>

	* checkbot.pl (printAllServers): Taken out of create_page for
	clarity.
	(printServerWarnings): Keep warning headers from being printed for 
	each warning.

1999-03-15  Hans de Graaff  <graaff@xs4all.nl>

	* README: Explain which Perl modules are needed.

1999-02-20  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (printServerWarnings): Fix printing of warnings so
	that headers are only printed once.
	(print_server): get correct IP address for web servers with
	non-standard port numbers.

1999-02-08  Hans de Graaff  <graaff@xs4all.nl>

	* Makefile.PL (chk_version): Added location of Mail::Send.

1999-01-18  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (count_problems): Change counting of problems to
	deal with new structure.

1999-01-17  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (printServerProblems): Changed to accomodate new
 	inventory of problem response. This new method allow multiple bad
 	links to one URL be all reported all at once. Also use
 	standardized response descriptions based on a patch by Benjamin
 	Franz <snowhare@nihongo.org>.

1999-01-10  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (byReferringPage): Added to allow sorting of
	problems by referer.
	(byProblem): Removed code to compare by exact message and
	referer.
	Removed the pre-amble to generate correct perl path because it is
	a bit too cumbersome during development.

1998-12-31  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (handle_url): Do a HEAD request when the guessed
 	content-type matches application/octet-stream to get the real
 	content-type from the server.

1998-12-27  Hans de Graaff <graaff@xs4all.nl>

	* checkbot.pl (handle_doc): Added warning for HTTP URLs without a
	fully-qualified hostname.

	* checkbot.pl (printServerWarnings): Added a mechanism to also
 	display checkbot warnings, unrelated to the HTTP responses, on the
 	results pages.

1998-10-24  Hans de Graaff <graaff@xs4all.nl>

	* checkbot.pl (setup): Explicitly set record separator $/
	This appears needed for perl 5.005, and fixes a problem
	where no URLs would appear to match except the first few.

1998-10-10  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl: Made POD conform to new scripts format better.

1998-06-21  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (init_modules): HTML::Parse is no longer needed,
	removed.

Sat Sep  6 16:00:12 1997  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot 1.51 released

Sat Aug 30 18:05:39 1997  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl (init_globals): assume file: scheme when no scheme
	is present.

	* checkbot.pl: Small portability stuff for perl 5.004 and LWP 5.11.

Sun Aug 17 08:56:38 1997  Hans de Graaff  <graaff@xs4all.nl>

	* README: Changed email addresses to point to new ISP.

Mon Apr 28 09:08:29 1997  Hans de Graaff  <graaff@xs4all.nl>

	* checkbot.pl: Parsing VERSION is somewhat tricky. Fixed.

Sun Apr 27 21:02:58 1997  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (check_external): Close EXTERNAL after use.

Sun Apr 20 10:24:09 1997  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl: Fixed a number of small bugs reported by Jost Krieger.
	Regular expressions can now be used with the options.
	Added --interval option to denote maximum interval between updates.

Sat Apr  5 17:03:46 1997  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (init_globals): Added checks for URLs without a scheme.

Fri Mar 14 11:17:21 1997  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (print_help): Fix typo.

Tue Jan 14 16:51:36 1997  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (check_internal): Check whether there are really
	entries in the new queue when changing queues.

Sat Jan  4 14:26:04 1997  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (print_help): --seconds should be --sleep in help.

Mon Dec 30 12:03:14 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (handle_url): If a URL is exclude'd, only use HEAD
	on it, not GET.
	Starting URLs can now be entered on the command line in addition
	to the --url option. --url takes precedence. --match is
	initialized with first URL if not given as separate option.

Mon Dec 23 20:21:32 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (print_server_problems): Each error message was
	evaluated as a regexp, potentially crashing checkbot on a bad
	regexp (e.g. including the string '++').

Mon Dec 23 15:15:05 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (ip_address): Deal with IP-address not found.

Sun Dec  8 12:55:33 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (send_mail): --note didn't work; Checkbot would
	crash when no external links were found.

Wed Dec  4 12:43:14 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (add_checked): All checked URLs are indexed using
	  IP-address to avoid checking pages multiple times for multiple
	  CNAME's.

Mon Nov  4 14:19:30 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (send_mail): Braino in URL fixed.

Sun Oct 27 20:16:38 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (init_globals): Don't let --match default to the
	--url until after we possible change the URL (this happens for
	file:/ URLs, currently)

Wed Oct 23 14:22:15 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (check_point): Oops, checking would occur every minute

Mon Oct 21 13:41:48 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl (print_help): Added version number to help info.

Wed Oct 16 21:05:58 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl: Added --proxy option for checking external links
	through a proxy server

Sat Sep 28 09:26:48 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot.pl (init_globals): Changed /var/tmp to /tmp.
	(check_point): Slower exponential rate, upper limit of 3 hours

	* Makefile.PL: Added check for Mail::Send

	* README: Added

Thu Sep 26 17:01:36 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl: Switched from short options to long options.
	I was already running out of meaningful options, so before adding
	additional stuff I wanted to move to Long options first. You
	should be able to abbreviate most options to the previous values. 
	Notable exception is -m, which has become --match.

Wed Sep 25 10:58:06 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot.pl: 
	Renamed from checkbot
	Added preamble to set proper path for perl (code from Gisle Aas)

	* Makefile.PL: First version, installs checkbot and checkbot.1

	* checkbot: Changed $revision to $VERSION for MakeMaker.

Thu Sep 12 15:09:07 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* index.html: updated required modules and location.

	* checkbot: require LWP-5.02, because it fixes a few nasty bugs.

Thu Sep  5 16:00:42 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* index.html: 
	Removed old and out-of-date documentation. Replaced by link to
	automatically generated html version of POD documentation
	within Checkbot.

	* checkbot:
	Fixed documentation bugs.
	Really fix the case insensitive comparison.

Sun Sep  1 20:31:46 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot (print_server_problems): 
	Make comparison for error message case insensitive.

Fri Aug 30 20:19:56 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Fixed several typo's.

Wed Aug  7 10:06:29 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot (handle_doc): 
	The new LinkExtractor is nice, but I shouldn't treat its output as
	a hash when it is an array, and thus skipping every other link.

Mon Aug  5 08:46:24 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot (print_server): 
	Fixed silly bug in calculating the percentage of problems on each
	server.

Fri Aug  2 21:38:39 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Added several patches by Bruce Speyer:
	Added -N note option to go along with -M, -z to suppress reporting
	errors on matching links.
	Added enough logic to catch gopher URLS if no gopher server found.
	Need further logic to parse gopher returned menu for bad file or
	directory.

	* checkbot: Made a good start with POD documentation inside the
	checkbot file. Try 'perldoc checkbot'.

	* TODO: Added number of suggestions by Luuk de Boer.

	* checkbot (send_mail): Include summary of links checked in message.

Fri Aug  2 13:01:02 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: 
	Added check for correct LWP version. We now need 5.01, due to bugs
	in the handling of the BASE attribute in previous versions.

Sat Jul 27 21:13:26 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: 
	Added several patches by Bruce Speyer:
	Optimized some static regular expressions.
	Fixed not setting the timeout, making the -t option useless.

Mon Jul 22 22:28:34 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot (create_page): 
	Fixed number of columns in summary output.

Sat Jul 20 11:49:23 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot (handle_doc): Changed to use the new HTML::LinkExtor,
	which will be present in LWP5.01. Should be more efficient, and
	less prone to memory leaks.

Sat Jul 13 12:41:23 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot (create_page): Forgot to add the ratio on the page.
	(check_external): Fix problems with different `wc` output.

Sat Jun 22 11:30:12 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Use correct base URL as returned with the document.
	Only check document when we used 'GET' to receive it.
	Remove magic guessing with ending slash of starting url.
	Deal with redirections by inserting redirected URLs into queue
	again.

Thu Jun 20 15:58:20 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: Major cleanup of initialization code. Also added todo
	counts to progression page, and proper todo handling for external
	links.

Sun Jun 16 21:16:28 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Added -M option: send mail when Checkbot is done.
	Fixed division by zero bug when external links == 0

Tue Jun  4 12:46:39 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: Better way to ignore fragments.

Sat Jun  1 15:14:52 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Don't print decimals with the precentages.
	Major update of counting, and printing counts. Cleaned up
	variables, corrected counting, made display more consistent and
	clear.

Wed May 29 21:18:26 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Small fixes to support lwp-win32 as well, thanks to
	Martin Cleaver.

Mon May 27 09:21:30 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: oops, small error in regexp caused script to append a
	slash to almost all start-url's. Fixed.
	
	* checkbot (handle_doc): External links without full URL's were
	not always handled properly.

Sun May 26 10:04:39 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: If the starting URL doesn't end in a slash, and
	doesn't have an extension, assume we need to add a slash.

	* index.html: Add version number to web page, and make sure it gets
	updated automatically.

Wed May 22 09:58:36 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: Changed verbose output of links found on pages.

Tue May 14 16:43:38 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* TODO: updated with respect to recent changes.

Mon May 13 15:06:05 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: Added LWP version number to agent field, changed page
	update policy, and updated script to LWP5b13.

Sat May  4 21:38:56 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Changed checked array to an associative array. Will
	consume more memory, but drastically cut back on lookup time.
	
	Rewrote handle_url logic to be more clear. Also fixed bug where
	servers would be added to the list unjustly.

	Sleep was only done on problem links, not after each request.

	Also added checks for already checked links while scanning through
	the document, and only add those links not checked to the queue.

	Add percentage problem links for each individual server.

Mon Apr 29 08:43:12 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: Deal with unknown or non-determinable server types.
	
	Only add links to the external queue when we know we can check
	their protocol.

	Additional changes to layout and content of pages.

Sun Apr 28 21:16:51 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Rewrote report page.

Wed Apr 24 22:39:43 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: Added a number of patches by Tim MacKenzie
	Added -s option to set the seconds of sleep between requests.
	Remove work files when *not* debugging.
	Only compile -m and -x regular expressions once.
	Also check external ftp and nntp links (using HEAD only).
	Get rid of huge memory leak! (Also noted by Fabrice Gaillard)

Fri Mar 29 10:58:24 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: 
	Got rid of warnings about some variables.
	Fixed problem with incorrect automatic -m argument when scanning
	local files.

Sun Mar 24 18:01:05 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot:
	Added code to support regular expressions with the -m and -x
	arguments. Thanks to Thomas Thiel for the patch and suggestions.
	
	No strict checking on schemes, fixes problem with unknown schemes
	stopping checkbot. Thanks to Pierre-Yves Foucou.

	* checkbot: 
	Should create direcory for temporary files, and remove it
	afterwards. Noted by Steve Fisk.

Sat Mar 16 13:40:48 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: 
	Made a number of changes from or based on patches by Thomas Thiel:

	Added missing t option in Getopts string.

	Made -m argument optional. If not given, the -u argument is also
	used as the start argument.

	Temporary files are now created in a separate directory. Its name
	contains the PID of Checkbot, to allow several concurrent
	Checkbots being run. Also remove temporary files, unless
	debugging.

	Implement file:// scheme to allow direct checking (without HTTP
        server)

Fri Mar 15 11:06:13 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: 
	Fixed warnings (and in the process, a small bug as well).
	Added URL and proper name to help.

Sat Mar  2 11:51:45 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* checkbot: 
	Added 'require 5.002' (because libwww-perl5b8 requires it).
	Added 'use strict', and fixed problems resulting from this. This
	can be seen as a first step towards fixing the huge
	memory-consumption.
	Updated help.

Tue Feb 27 09:57:57 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot:
	Fixed bug which occured when -x option was not present.
	Updated script to use libwww-perl5b8 function names. This is not
	backward compatible with versions prior to beta 8.

Mon Feb 26 12:46:08 1996  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot:
	Fixed bug with Referer header for external URL's.
	Also make server pages auto-refresh.

Sat Feb 24 11:48:15 1996  Hans de Graaff  <Hans.deGraaff@twi72.twi.tudelft.nl>

	* TODO: New file.

	* checkbot: Added single -x option as an additional exclude pattern.
	This overrules the -m match attribute.

Mon Dec 11 14:13:30 1995  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* index.html
	Added libwww-perl5 address, and added a usage section.

	* checkbot.pl
	Removed this old perl4 version.

Fri Dec  8 13:41:43 1995  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot: 
	Major rewrite of most of the internal routines. The routines are
	much more structured now, and broken up into smaller routines.
	I also changed the way checked links are remembered. It should be
	much less efficient, CPU-wise, but more efficient memory-wise.

Fri Nov 24 16:45:18 1995  Hans de Graaff  <J.J.deGraaff@twi.tudelft.nl>

	* checkbot:
	Fixed small problems, mostly with output.
	Fixed checking of external links
	Changed sorting order

	* checkbot: 
	Perl5 version now works for the most part. Although Checkbot isn't
	fully finished I at least feel confident to release it.

Fri Aug 25 11:23:36 1995  Hans de Graaff  <graaff@is.twi.tudelft.nl>

	* Made a start with the perl5 version of checkbot. The modules in
	perl5 (e.g. LWP) look very promising, and should make checkbot
	quite a bit better.