[mnet-devel] ChangeLog for v0.6.1.192
Zooko
zooko at zooko.com
Mon Feb 17 19:51:08 GMT 2003
=============================
Mnet v0.6.1.192-STABLE - 2003-02-17
=============================
Core:
+ Searches have been sped up in two ways: Content Trackers have been
optimized to generate search results faster, and clients have been
changed to query the fastest Content Trackers first.
+ Client uses less RAM when downloading.
+ Client has been optimized to use fewer CPU cycles when deciding
which peer to download a block from. This might be noticeable as
slightly faster downloads, but for most people will be noticeable
as less CPU usage while downloading.
GUI:
+ Downloading files are now marked with a "downloading" icon in the
search results panel.
+ If the user resizes the columns, they no longer get reset to their
default widths when new search results are added.
+ Downloads which are automatically restarted when restarting the
application are now visible (marked as "queued") in the downloads
panel.
+ The built-in IRC client now tells you "that slash command is not
implemented" instead of posting the unimplemented command that you
typed to the IRC channel as a message.
Only on Unix platforms:
+ Automatically parse metadata out of Ogg Vorbis files when
publishing. (This only works if you have libvorbis installed.)
Other Details (probably meaningful only to hackers):
+ There are now two MetaTrackers and three bootpages. This means
that the loss of one MetaTracker will not damage the network. (The
loss of both MTs will. The solution to that is almost finished in
CVS and it is called "Khashmir".)
+ Relay service is sped up by optimizing out one round trip (send,
receive) when you open a TCP connection to a relayer and he has
messages queued up for you. (This is an uncommon case in
relaying.)
+ Publishers now use the same distance metric as downloaders: XOR
distance from nodeId (this means downloaders should be able to find
all the blocks of published files faster).
=============================
Mnet v0.6.0.151-STABLE - 2003-01-12
=============================
Core:
+ A new download system (named "BlockWrangler") fixes the download bugs from
v0.5.1-STABLE.
+ The download system now caches partially downloaded files so they restart
next time you try to download them.
. Downloads are now cancellable.
. If your Mnet Node is shut down with a download partially completed, that
download automatically restarts when you start your Mnet Node again.
. resume will happen with delays, one file after another, to avoid
stressing the broker by starting all downloads at once.
- there is no download-details mode at the moment.
+ A new content verification system (named "FileVerifier") tries to filter
out broken files from the search results.
+ Ported to Mac OS X (HTML-based GUI only).
+ When a Node downloads a file, it makes some of the blocks from the file
available to other Nodes. This increases the availability of popular
files, while eliminating what little privacy a downloader would otherwise
have.
+ Many changes were made to fix bugs and improve the user experience.
Known Bugs:
- FileVerifier cannot be 100% up-to-date, so it is always possible that a
file is listed in the search results but can't be downloaded.
- The architecture of this version of Mnet is an "every node knows about
every other node" architecture. This works well with small networks (the
current network has about 25 nodes), but will not scale up. I estimate
that the system will scale up about one order of magnitude, to somewhere
around 250 nodes. Incremental changes might be able to make it scale up
one more order of magnitude, to around 2500 nodes. (If we make such
incremental changes, they will be released as v0.6.1, v0.6.2, etc.) Scaling
up beyond that will require fundamental changes to the architecture, which
are already in progress, and which will be released as the next major
release of Mnet: Mnet v0.7.
- Relay Servers sometimes (rarely) swell up to 100's of MB of memory usage.
Other Details (probably meaningful only to hackers):
+ The default configuration has been changed to run a 500MB non-publishing
download-cache-redistributing blobserver. (This is the implementation of
the "share blocks of downloaded files" feature mentioned earlier.)
+ When *using* a relay the Broker will never *run* a RelayServer now.
+ MetaInfo gossiping has been restricted to never re-gossip information
we didnt receive from an authoritative source.
+ Added options for a more directed publishing.
. publishing all blocks to the local blockstore.
. publishing to a list of servers specified by their Id.
=============================
Mnet v0.5.1-STABLE - 2002-09-08
=============================
Core:
+ Ported to cygwin, Solaris, and FreeBSD.
+ Fixed "XML encoded binary data" bug which corrupted some files.
+ Fixed numerous small bugs.
+ Refactored, cleaned up, or removed much code.
- Did *not* fix bugs which cause download to sometimes pause for 15 minutes.
- Did *not* fix bugs which cause download to sometimes hang indefinitely.
- Did *not* fix memory leaks which cause some servers to use up all RAM.
- Did *not* fix issues in the architecture which cause files to disappear.
User interface:
+ Fixed crashes on Win32.
+ Added a systray icon.
=============================
Mnet v0.5.0-STABLE - 2002-02-15
=============================
we hadn't started writing useful changelogs.
=============================
Mojo Nation 0.999.0 - December 10, 2001
=============================
Core:
+ Fixed several memory leaks. Unfortunately there are still some remaining
memory leaks in the current version, but the rate of leakage is slower than
in previous versions.
+ Fixed bug that could sometimes cause a server to spiral out of control
under heavy load.
+ Fixed many bugs that caused only minor problems or caused problems
only rarely.
+ Tweaked setting in the attempt to make files endure better, at the cost of
making publication take slightly longer to complete.
+ Many minor optimizations to reduce CPU load.
+ Much internal cleaning up of source code. This is invisible to the user,
but appreciated by hackers.
+ Ported to work with older versions of Python (as old as Python v1.5.2) as
well as with newer (as recent as Python 2.2b2).
+ Use newer and better versions of open source libraries PyXML and Crypto++.
=============================
Mojo Nation 0.998.6 - October 31, 2001
=============================
Core:
+ Fixed a memory leak that tended to use up all of your RAM when doing a
download or running a block server.
+ Optimized code for faster performance and less CPU usage.
+ Rewrote relay service to be more efficient and more robust in the face of
disruptions such as your relay server going down or your cat knocking your
phone off the hook. Any user connecting to the Mojo Net through a firewall
or NAT should benefit from this improvement.
+ Optimized block server to use less CPU and to access disk less frequently
(thanks to mysterious contributor "Xbl6")
+ Fixed bug which caused downloads to sometimes fail. Downloads always
continue trying until they succeed or until you exit the broker (so try
leaving your broker running overnight and maybe it will have reconstructed
the file in the morning).
+ Fixed bug which caused any search results message larger than 640 KB to
be silently dropped.
+ Fixed bug which caused the broker to hang on shutdown.
+ Fixed sundry small bugs and improved networking behavior.
+ Made the broker handle out-of-memory errors more gracefully.
+ Reduced the size of the Broker download by better compression and
elimination of unnecessary data.
+ For hackers: cleaned code and documentation, fixed compilation and
portability bugs, added new API and protocol documentation.
User interface:
+ Fixed bug in which saving advanced preferences turned content tracker and
relay server off.
+ Fixed bug in which the "cancel" button to cancel a publication only worked
50% of the time.
+ Removed e-mail address <support at mojonation.net> from help screen. There is
no support staff (and there has never been a support staff) at Evil
Geniuses For A Better Tomorrow, Inc., but the public community of Mojo
Nation users and hackers is friendly and helpful:
<mojonation-users at lists.sourceforge.net>.
=============================
Mojo Nation 0.994.7 - August 16, 2001
=============================
Core:
+ Improvements and fixes in the fuzzy/soft mask range logic.
+ Some content trackers were returning dinodes in a different
format causing them to be rejected. Brokers now accept either
format.
+ Local reputations for brokers are updated in a some places
where they were previously overlooked.
+ Content trackers now verify the availability of items in a
random order instead of always starting at the beginning. (This
helps in the case that the list is so big that they never get all the way
through it during one session.)
+ Brokers now exchange contact info ("gossip") about other brokers
based on how much they prefer to use that broker ("local reputation").
Therefore reputation is now transitive instead of strictly local.
+ Contact info heard from other brokers and passed along to other
brokers now includes a time to live which can only be raised by a
broker being online and issuing updated metainfo every so often.
This way metainfo for offline brokers doesn't stick around in
the system forever slowing things down (most notably publishing).
=============================
Mojo Nation 0.994.0 - July 16, 2001
=============================
* Experimental Release!
Core:
+ Fuzzy/Soft mask-ranges are used instead of the strict fixed mask-range
logic of previous versions.
+ Relay servers only pass messages along to brokers that have asked them
to recently. Preventing some relay loops that were occurring in prior
0.99x releases.
+ Many internal cleanups and improvements not yet listed here.
=============================
Mojo Nation 0.991.4 - June 11, 2001
=============================
Core:
+ Fixed bug which caused Content Tracker to reject all new submissions.
+ Fixed bug which allowed relay server to send the same message to itself
over and over until it ran out of memory to store all of the copies.
+ Removed a feature to make access to the counterparties database faster --
there have been a suspiciously high number of corrupted counterparties
databases since that feature went in. (Also added workarounds to try to
recover from such corrupted databases.)
+ Added workaround for rare and inexplicable database exception in
blobstore.
+ Fixed bug in processing of config values in Python 1.5.2 which was
introduced in v0.991.3.
=============================
Mojo Nation 0.991.3 - June 10, 2001
=============================
Core:
+ Fixed bug which sometimes caused brokers operating behind firewalls to
fail to announce themselves to the network.
+ Fixed several bugs which made the Broker unusable with Python 1.5.2.
=============================
Mojo Nation 0.991.0 - June 8, 2001
=============================
Core:
+ Fixed bug in XML parsing which caused all content trackers to
have a fatal error on start-up.
+ Fixed a couple of other small bugs that caused specific transactions to
fail.
=============================
Mojo Nation 0.990 - June 7, 2001
=============================
Core:
+ Brokers now use dynamic 2nd price auction pricing instead of the
old klunky user "what should i set this to?" settable prices. Mojo
pricing now properly works as a "go faster juice" and as a load
balancing mechanism (brokers cost more while they are busy).
Brokers will continue to operate even without mojo, but those with
it will generate higher priority requests and run smoother.
+ The publication tracker is no longer used now that block
wholesaling is working properly.
+ Brokers now occasionally send a selection of other broker metainfo
along with response messages. This is the first step towards
distributed metatracking to lessen the need for central metatrackers.
+ Brokers should now issue redundant (useless) metatracker queries much
less often, lightening the load on our metatrackers.
+ Several internal speedups, including faster message encoding and
less frequent need for on disk database access.
+ Publishing now defaults to 16 of 32 information dispersal for
even greater data reliability than before.
User interface:
+ A new "trackers" menu listing what content trackers definitions
are known (formerly called content types) are installed. This is
a preview of our hosted content tracking system that will be released
in the near future.
=============================
Mojo Nation 0.980 - May 9, 2001
=============================
aka "the 0.970 bugfix release"
+ relay servers in 0.970 could get into a slow infinite loop trying
to send messages to other brokers who were no longer connected.
+ mojoid lookups were not working properly in many cases in 0.970.
+ content trackers now limit the size of the results they return.
+ several smaller bug fixes.
=============================
Mojo Nation 0.970 - May 7, 2001
=============================
User interface:
+ A new look and some cleanup after useability testing.
+ New users are shown the preferences interface first thing in
hopes that they set their connection speed properly.
+ The mojometer is gone as that should not be the primary concern
of the user. It is an automated behind the scenes technology.
Content tracking:
+ A more intuitive searching interface to perform searches in a
more logical way familiar to most users.
Core:
+ Data is now broken up into 512k chunks published using 8 of 16
information dispersal for much greater reliability.
+ Several important bugs in the block wholesaler have been fixed.
+ More robust publishing and downloading.
+ Faster incoming message decoding.
+ Messages sent to someone via relay are now compressed properly:
NOTE: users will need to upgrade to this version in order for recent
brokers to send messages to them via relay properly.
+ Metainfo for counterparties is now saved to disk periodically so
that the broker has something to start with when first starting.
+ Bad metainfo for counterparties is forgotten as soon as a transaction
with them fails. This helps prevent repeated transactions with an
offline broker and needlessly lowering their reliability reputation
while they are offline.
+ Many misc. bug fixes and cleanups.
=============================
Mojo Nation 0.960 - Mar. 15, 2001
=============================
user interface:
+ Removed obsolete documentation and user interface options that were
confusing.
Content Tracking:
+ Content trackers no longer return hits for files that are currently
unavailable.
core:
+ Now search results and data blocks that arrive later than expected
are still used if they are needed (previously late results were
ignored).
+ More robust downloading.
+ Switched to new, standard glue code (called "pybsddb") for internal
databases.
+ Added workaround to recover from mangled databases on startup.
+ Speed-ups of the core code.
+ Several fixes for bugs that show up only in rare circumstances.
=============================
Mojo Nation 0.956.0 - Feb. 26, 2001
=============================
user interface:
+ template processing was being done in an inefficient manner,now
the web user interface should use less cpu and be a little
faster; this is most noticable when displaying search results.
+ save to disk downloads now appear on the status page and the
navigation menu activity list with a percentage complete.
core:
+ fixed a bug where message delivery could fail when another broker
broker demands a token payment in response.
+ running a relay server had several bugs that could cause it to
leak memory; its memory usage is now limited to a configurable
amount and will decrease over time if messages are not picked up.
+ the ability to download publications that use a splitting factor
other than 4 of 8 has been fixed.
+ brokers now send an advisory goodbye message to meta trackers
when shutting down.
windows:
+ The installer no longer puts mojoproxy in your startup folder
and no longer installs the broken 'failsafe intropage' link
on the start menu.
+ old mojolog files are automatically cleaned up.
+ we accidentally left the content verifier set to run 100s of
time more often than it should in the packaged 0.950 windows
releases. This caused massive extra CPU, memory and mojo
usage for anyone running under windows.
=============================
Mojo Nation 0.950.0 - Feb. 14, 2001
=============================
user interface:
+ a new "save to disk" download method has been added along with
a status monitor to show the pieces and blocks as they come in.
+ the windows version has a nicer look with a small GUI broker
console instead of the old text-console window.
core:
+ the block wholesaler has been fixed, previously it could buy too
many blocks often not looking for the most popular ones.
+ improvements to the TCP/IP communications layer.
+ the log file is now rotated every 24 hours on windows.
=============================
Mojo Nation 0.940.0 - Feb. 5, 2001
=============================
core:
+ fixed bug in which the "maximum disk space to use" setting was not
respected. It existed in the last few releases.
+ only one block store index run will happen at a time now
this should greatly improve performance after startup for brokers
with large blockstores
+ publishes are now queued so only one will be active at a time
+ BlockFinder no longer hogs the broker while sending out "do you have
blobs" requests
+ a possible workaround for the 'too many file descriptors' in
select error has been added for those who are still seeing it.
+ An application error on broker shutdown introduced in 0.938 has been
mostly fixed (it still happens on rare occasions).
user interface:
+ fixed search results to look cleaner when there are lots
of fields in the result.
+ made intropage and privacy code error page have proper auto
refresh tags to take you to the correct page. Less clicks are
required to get going now.
+ added configuration for the fraction of all blocks a broker
will traffic in to the advanced config page.
=============================
Mojo Nation 0.938.0 - Jan. 22, 2001
=============================
core:
+ rewrote the bootpage loader to try and fix the lockup problem
many people were having.
+ added the block wholesaler. Block servers will now go out
and find the most popular blocks that they have been asked for
but don't yet have.
+ added the content verifier. Over time content trackers will
now expire entries from their database that they find are not
downloadable.
+ publishing should be a bit faster and more robust due to better
block distribution code.
+ fixed a bug that could cause acknowledgements of token payments
to be dropped on rare occasions.
+ fixed a bug noted by wjr that caused an extra token to be lost
between the cushions every time a payment was sent. All lost
tokens will be found when you upgrade.
user interface:
+ search results are displayed in a more compact format.
=============================
Mojo Nation 0.936.0 - Jan. 12, 2001
=============================
core:
+ a bug introduced in 0.934 that would cause needless 100% cpu usage
in the comms code has been fixed.
+ a bug in which Windows runs out of file descriptors -might- be fixed.
+ a bug that could cause publishing to hang has been fixed.
+ brokers directly connected to the internet will recheck their
IP address once every few minutes for people using DHCP with flakey
ISPs.
user interface:
+ it now displays a notice when downloading the users initial mojo so
that they don't think they need more.
+ many consistency improvments and a new background color
=============================
Mojo Nation 0.934.0 - Dec. 22, 2000
=============================
core:
+ new brokers weren't always picking a relay server when they
should have.
+ several bug fixes in the core, there should be less threads
and less deadlocks now.
+ block servers were not picking a good random bitmask, this has
been fixed. If your block server had a bad mask, it will pick
a new one.
+ "fixed lots of random little bugs"
+ better counterparty reliability handicapper and more efficient
latency and thruput handicappers.
=============================
Mojo Nation 0.930.1 - Dec. 14, 2000
=============================
core:
+ relay server failover wasn't working and has been fixed.
=============================
Mojo Nation 0.930 - Dec. 12, 2000
=============================
user interface:
+ A redesigned navigation bar.
+ A much improved broker configuration interface.
+ The ability to cancel an in progress publication.
+ configuration now properly sets comms speed in/out.
core:
+ Improvements in the downloading code so that it limits the number
of blocks it gets at once from a single counterparty for better
performance and less false timeouts.
+ A bug in the TCP connection management has been fixed that could
cause it to leak some connections, not closing them and cutting
off the counterparty on the other end.
+ several minor bug fixes reported by 0.927 users.
=============================
Mojo Nation 0.927 - Dec. 8, 2000
=============================
user interface:
+ A mojo meter is now displayed to give you an idea of how your broker
is doing for mojo. A mailto url was added to ease requesting
more mojo when you need it.
core:
+ performance tuning is now done based on a configurable internet
connection speed so that modem users should now be able to
successfully download and publish. (see the config page)
+ new stash/purse file format is *much* more efficient when you
have large amounts of mojo (more than a few million)
+ relay servers now support a fast mode where they can pass
messages along without waiting for a poll if your broker already
has a connection to them.
+ relay server and publication tracker polling is now done more
effiencitly internally.
+ many many little bug fixes for bugs people reported in 0.921.
=============================
Mojo Nation 0.921 - Nov. 23, 2000
=============================
core:
+ A bug where busy brokers could stop sending hello messages to
metatrackers is fixed.
+ If you select a html file when publishing, the broker will parse
it and automatically package up all files linked to using relative
links.
+ Some bugs in the 'Software - *' -> 'Software' category changing code
have been fixed.
+ Speed improvements in an internal hotspot function (mdecode).
+ Several minor bug fixes.
+ Brokers can now spread their block storage across multiple drives
or partitions as well as having read-only block stores. Read the
included faq.txt for details.
windows:
+ The 'Web interface to a running Broker' intropage.html link should
work on more systems (it's still not perfect).
+ The mojoproxy has been deemphasized in favor of simply using the
localhost gateway due to proxy configuration and stability issues.
=============================
Mojo Nation 0.920 - Nov. 14, 2000
=============================
core:
+ a bug where publishing could stall at 100%/100% without going on to
announce the publication and submit content tracking info has been
fixed.
+ a bug where very busy brokers would stop listening for connections
and not start again has been fixed.
windows:
+ the uninstaller attempts to stop your mojoproxy for you if possible
to try and prevent the need for a reboot after uninstall.
=============================
Mojo Nation 0.919.5 - Nov. 10, 2000
=============================
windows:
+ A new windows installer is being used. Windows installation
should be much simpler now
+ The proxy now gets the location of the intropage.html out of the
registry (from an entry put there by the installer) rather than
the mojoproxy.exe command line. This should make the proxy more
likely to work for people.
+ The web browser now automatically opens to the intropage.html
file allowing you to choose to access the broker via the proxy or
the localhost gateway.
core:
+ Fixed the bug causing 100% cpu usage during publishing.
+ Fixed a bug that was causing publishing to hang at the end.
+ Improvements to the new faster download logic so that it
continues to try and get a given block if the original server
failed to return it.
user interface:
+ The privacy code is no longer put into urls if the user is
accessing the broker via the mojo proxy.
=============================
Mojo Nation 0.919.0 - Nov. 3, 2000
=============================
user interface:
+ Search results get displayed as they come in, instead of waiting
for all the results to come in and then displaying a new page
containing all of the results.
core:
+ New, much faster downloading code!
+ New, much faster publishing code!
+ Fixed the ugly memory leak on publishing. You can safely publish
large files now without using up all of your RAM.
+ Improved the strategies for exchanging tokens so that staying paid
up on your debts is done more smoothly and robustly.
+ Bandwidth throttling is available if you edit the config file; You
can use this to limit your Mojo Nation broker to using no more
than X kilobytes per second.
+ The windows version is now built using python 2.0, giving it the
ability to open the web browser for you when the broker starts up.
+ New code for determing your ip address on windows; it doesn't
depend on route.exe and shouldn't cause norton antivirus problems
anymore.
+ It appears to work on Windows 2000 and Windows NT 4.0. (This has
been true since 0.915.)
+ It slices, it dices, it makes your bed. [**]
** if you hire a maid service.
=============================
Mojo Nation 0.915.1 - Oct. 15, 2000
=============================
core:
+ Fixed several bugs and performance problems which caused the central
metatracker to succumb to the dreaded "slashdot effect" (i.e. it was
overloaded from too many new users).
The central metatracker is a kludge we've been using to bootstrap the
network, and it is due to be replaced by fully distributed
metatracking soon. In the meantime, these fixes should make it
strong enough to handle a bunch of new users. Most users will have
to upgrade to v0.915 or higher in order to use the improved
metatracker.
+ Uploading and downloading speed improved a little. (But the
uploading/downloading is still very slow. We are working on a
whole new uploading/downloading system that should have
dramatically better performance, which will be included in the next
version.)
user interface:
+ Now when you publish a file, the Mojo Nation broker automatically
fills in most of the fields describing the file's name, type, size,
etc.
+ Fixed a bug in which the "mojo coming in" number go negative when it
was supposed to go positive. Thanks to Raph Levien
<raph at artofcode.com>, William Rucklidge <wjr at imarkets.com>, and a
couple of other people for fixing this one.
=============================
Mojo Nation 0.913.1 - Sept. 29, 2000
=============================
core:
+ automatic notification of when a new version of the mojonation
software is available has been fixed.
+ some exceptions were not being written to the log file properly,
this has been fixed.
documentation:
+ some touchups to the README, faq, quickstart, etc..
=============================
Mojo Nation 0.913.0 - Sept. 27, 2000
=============================
user interface:
+ All users are now presented with the terms of service agreement
when they first run the software. (you only have to accept it
once, that's saved in your config file)
+ The localhost web ui now starts up much sooner after you run
the broker.
+ Publishing now uses an activity list with a status queue and
status page so that publications can be queued up and take place in
the background.
+ The Dinode of a publication is now put within a bounded box so
that it doesn't mess up the html formatting but is easily
selectable for cutting and pasting.
+ Added "behind a firewall" to the config UI (sets SERVE_VIA_A_RELAY
in broker.conf)
+ block server prices in broker.conf are now updated
properly when set via the configuration UI.
+ The UI displays a warning when you are running low on actual mojo
in your stash.
core:
+ Publication trackers now default to initially using the same mask
range as the block server so that their block server doesn't
need to pay for updates if they are running a publication tracker.
+ Publishing a multifile-multidirectory archive from windows no
longer messes up the case of the filenames in the publication.
+ Viewing an index of a multipart archive on the windows version
now properly uses forward slashes for pathnames in the links.
+ We're using a new VersionNumber class now so that our future
version numbers can have infinite dots in them such as 3.14.159
+ mojohttpd's load_and_write_template call has been nuked;
everything is now using Presentation and UserCommand.
+ upgraded from BerkeleyDB 3.1.14 to 3.1.17
+ made localblockstorage rescan the filesystem to make sure its
index isn't corrupt each time it starts up.
+ TCP connection management bugfixes and improvements
+ database log.0000000N files are now cleaned up automatically.
+ fixed 301 http responses to use the proper full URL so that wget
works for fetching mojonation content.
+ upped the timeout when publishing blocks in hopes of preventing
publish failures for modem users.
+ configuration file now uses a PATH section instead of a PATHS
section which does environment variable expansion within the
names instead of using evil, set once, hardcoded paths.
+ improved Expires headers in web ui to avoid reloading pages when
unnecessary.
+ changed Web Page content type to Web Site
+ temporary internal hack to up your amount will front value by
40,000 mojo to all counterparties until mojo payment retrying and
failure recovery is implemented properly.
proxy:
+ MojoProxy now works properly with yahoo mail logins and stuff.
+ mojo proxy now properly ignores invalid mime headers that
microsoft IIS 4.0 likes to send out (on ebay in particular)
work in progress:
+ a new mojo proxy using async IO instead of threads.
+ much faster downloads
=============================
Mojo Nation 0.902 - Sept. 16, 2000
=============================
we hadn't started writing useful changelogs.
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