Dear Gnutella fans,
Version 0.96.7 stable has been released on sourceforge. You may get it through
Gnutella at:
magnet:?xt=urn:sha1:XODKKQMZ2IMQRFZV4BLTCO4UCGYOGVVB&dn=gtk-gnutella-0.96.7.tar.bz2
or on sourceforge at the usual download location.
The magnet link above should be functional as soon as enough 0.96.7 version
share the file and run with the Distributed Hash Table enabled. So naturally
there will be a bootstrapping problem...
Here are the changes since 0.96.7, as listed in the ChangeLog:
# v 0.96.7 2010-03-07 [stable]
Bug Fixes:
- Fixed memory leaks.
- Do not unduly rewrite fileinfo trailers on restart, messing with the "mtime"
filesystem information.
- We were never forwarding to other ultra nodes queries that did not
have a TTL of exactly 1 (severe bug impacting the network).
- Queries not kept for a local file match were most often dropped and not
forwarded (severe bug impacting the network).
- Corrected detection of largefile support in Configure.
- Fixed oversight in token validation, to be able to verify older versions.
- Fixed metaconfig unit for systems without kqueue().
- PARQ complained about lack of X-Queued header even if HTTP status was not 503.
- Fixed sending of QUEUE callbacks to avoid hammering remote host, or stopping
alltogether at the first timeout detection.
- Was sometimes failing to reconnect to more nodes after disconnections.
- Inverted logic was causing repeated UHCs queries when under the minimum
amount of peer connections, causing undue traffic.
- Tigertree verification would sometimes crash and delete the wrong slices
after a TTH mismatch.
- Fixed crashes at shutdown time due to inappropriate dropping of new messages
in the message queues.
- Fixed crashes at shutdown time due to improper checking in the dynamic
query cleanup code.
- Fixed invalid boundary test when server shrinks the requested file chunk.
- Unfreeze all PARQ entries from the IP after serving a quick slot, or we
could have several frozen entries for that IP with no possible escape.
- Receptions of "GIV" and "QUEUE" were not checking whether the remote address
was an hostile one.
- Changed the Bitzi ticket-requesting URL, as the previous one was no longer
responding correctly.
- Fixed push-proxy support: requests (LIME/21) now only use v1 and acks
(LIME/22) only use v2 because this is what LimeWire expects. GTKG was
sending LIME/21v2 which confused LimeWire, in effect disabling the ability
of GTKG to act as a push-proxy.
- GUI node flags were not updated upon reception of a Push Proxy
Acknowledgement (indicating the node became one of our push-proxies).
- Fixed status bar which lost the GTKG URL as soon as a new version was
announced.
- Fixed crash when a compressed connection was closed and had never been
given any data to compress.
- Fixed behaviour on DHT value lookups when the key exists but is not holding
the proper value types.
- Fixed HTTP partial range merging logic.
- Fixed logic for push-fallback on connection timeouts.
- Fixed improper GUI status display when connecting to a push-proxy.
- Could wrongly discard a perfectly good push-proxy.
- Prevent "found more recent metainfo" warnings at next startup by properly
flushing the metainfo database at shutdown time.
- The "Force push mode" menu entry could have no effect if gtk-gnutella had
determined the host did not require a push.
- Avoid innocuous duplicates in the persisted download file.
Improvements:
- Better resuming of downloads on session restarts.
- Increased success rate on downloads from firewalled hosts.
- Completed support for DHT publishing: DHT is now fully functional.
- DHT bandwidth usage is now disaplayed in the GUI.
- Added support for GGEP XQ (eXtended Query) as used by LimeWire for search
terms longer than about 30 characters.
- Try to decipher incorrectly encoded query flags from buggy Shareaza.
- Parse incorrectly formatted X-Alt header from buggy Shareaza.
- Implemented PFSP 1.0a: now emits and handles new X-Available header.
- Added some MIME types and file extension mappings.
- Added comand-line switch --compile-info to print some information
that is hardcoded at compile-time.
- Persist known TTH roots in magnets.
- Swapped leaf and ultrapeer slots for GGEP UP in compliance with LimeWire
which does not follow the published specification (so we don't either now
but we are compliant with the de-facto standard).
- Will now remove uncompressed ultra connections when full and getting a
new compressed one.
- Whitelist can now support TLS hosts and will refresh DNS mappings regularily.
- Improved granularity of the background task used to scan the library in
order to prevent noticeable processing freezes as much as possible.
- Redesigned the output of the shell "status" command to show more information
and display status flags (shown as icons in the GUI).
- Added liberal parsing of urn:sha1: and urn:bitprint to cope with clueless
sites using hexadecimal instead of base32 to encode the hashes.
- Added -v option to the shell command "props" to also display values along.
- Added real shell-like string parsing, and fixed escaping to work correctly.
- Added the ';' separator to be used to separate mutiple shell commands.
- Allow crashes and fast assertions "soft" failures to be timestamped.
- Don't answer to UDP pings from bad nodes, which include "alien" hosts.
- Loop through the TCP push-proxies more quickly until one can relay our push.
- Passively revitalize PUSH routes and wakeup starving downloads.
- Attempt to collect push-proxies passively from relayed query hits.
- A completed file waiting for being moved accross filesystems will now
be flagged as such in the GUI "Downloads" pane.
- Detect and fix improper 503 HTTP status code replies when 416 was meant
(broken HTTP replies from Foxy, Shareaza, and maybe others).
Under the hood:
- DHT (Distributed Hash Table) is now enabled by default.
- Reduced blackout period between two DNS server name lookups to 30 minutes.
- Updated PFSP specifications (partial file sharing) to version 1.0a.
- More statistics.
- Always use exact time when logging, not the cached time.
- Align to LimeWire's settings for DHT expiration and republishing periods.
- Do not emit any PFSP header when seeding a finished file.
- Even if bandwidth is tight, force emission of the X-Hostname header under
certain circumstances because this information is precious.
- No longer constantly monitors for unsolicited UDP traffic, which will save
precious CPU cycles.
- Improved malloc tracking by reporting symbolic names in stack frames.
- Optimized ultrapeer TX compression settings to reduce memory requirements,
saving 288 KiB of RAM per Gnutella node connection (leaf or ultra).
- Increased default amount of ultrapeer connections to 42.
- Optimized memory footprint of the simple hashtable and allow it to be
downsized as well.
- Consider a HEAD Ping message to be unsolicited UDP traffic.
- New shell command "memory dump" available when malloc stats compiled in.
- Some documentation held in SVN cannot be packaged on Debian, so it was
moved to a separate directory that is left out from the packaging manifest.
- SDBM improvements for greater runtime performance and data consistency.
- Added DHT root node caching (k-closest nodes of a target KUID).
- Tuned DHT node lookups for more performance.
- Can now hold the SPAM look-up table in an SDBM database instead of memory.
- The directory holding "incomplete" files is now lock-protected to prevent
two different gtk-gnutella instances from using the same one.
- Added long-due zone garbage collector, called when gtk-gnutella is "idle".
- Tuned block size to avoid wasting too many bytes in zones.
- Improved the virtual memory management layer to limit fragmentation,
especially for servents running over long periods of time (weeks).
- Revised the vitrual memory management page-caching algorithm.
- Politely deny handshaking with peers presenting an X-Auth-Challenge header
or an FP-Auth-Challenge one.
- Added support for firewalled alternate location collection and propagation
through the X-Falt header (requires that the "fwalt/0.1" feature be
advertised in X-Features).
- Added a non-persistent "alien" cache to keep track of IP:port of nodes
that do not belong to the Gnutella network.
- Increased the buffer size of datagram sockets to 32KiB to allow reception of
bigger messages: it is not uncommon to get OOB query hits larger than 4KiB.
- Count (and show) amount of launched SHA-1 and TTH file verifications.
- Translation updates.
Limitations:
- DHT code is currently sub-optimal for firewalled hosts.
- Manual bandwidth tuning is currently necessary to allow for efficient
DHT usage. Allow at least 8 Kib/s out, 15 KiB/s out being better.
Also increase the lookup bandwidth to 32 KiB/s in and 6 KiB/s out, the
defaults of 8 KiB/s in and 2 KiB/s out being very conservative.
- DHT is enabled by default with a fixed (manually tunable) configuration.
There is no auto-tuning and no adaptation to traffic conditions yet.
You need to explicitly disable the DHT if you don't want to benefit from it.
Enjoy!
Raphael
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