91 lines
5.1 KiB
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91 lines
5.1 KiB
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==============
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0.8.12 Release
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==============
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.. meta::
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:date: 2012-01-06
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:category: release
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:excerpt: The 0.8.12 release fixes several message corruption bugs, some present since 2005. It also contains a redesign of the router's congestion control, and continued optimization of CPU and memory usage. We are hopeful that these changes will improve network performance.
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The 0.8.12 release fixes several message corruption bugs, some present since 2005. It also contains a redesign of the router's congestion control, and continued optimization of CPU and memory usage. We are hopeful that these changes will improve network performance.
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Upgrading is recommended.
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{% trans -%}
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Files are available on the `download page`_.
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{%- endtrans %}
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.. _{% trans %}`download page`{% endtrans %}: {{ get_url('downloads_list') }}
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**{% trans %}RELEASE DETAILS{% endtrans %}**
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This release contains several big changes that should help network reliability and performance.
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The first two changes are fixes for major UDP packet transmission bugs, described below. The third change
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is fixes to the decompressor. Fixing these should eliminate a big source of message delivery failures.
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Also, the release contains a rewrite of the router's participating traffic congestion control. It should
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now more accurately measure current participating bandwidth, handle bursts better, drop messages less, and
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drop the right messages if dropping is required.
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Also, the release reduces the amount of processing that routers do for messages they pass down the tunnel.
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These messages do not need to be completely parsed and validated since the gateway is simply passing them through.
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This will help performance of all routers but the improvement will probably not be noticeable except on high-traffic routers.
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We're optimistic that these changes will help, and of course eliminating sources of message corruption is sure to help.
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However the extend of the improvement won't be apparent until the majority of the network upgrades.
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The release also contains some updates to the router console light theme. You may need to do a shift-reload
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or control-reload in your browser to force a reload of the CSS.
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**{% trans %}Major changes{% endtrans %}**
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- Instead of fully parsing and validating messages received at the inbound gateway, simply pass them down the tunnel
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- Don't verify I2NP checksums in most cases, as message corruption is caught at other layers
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- Don't recalculate I2NP checksums on messages passed through unchanged
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- Several NTCP pumper optimizations, to hopefully fix NTCP pumper high CPU usage on fast routers
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- Rewrite participating tunnel congestion control, to drop less, more accurately measure traffic, and handle bursts better
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**{% trans %}Wrapper Update{% endtrans %}**
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New installs include wrapper version 3.5.13 which fixes a heap corruption with very long log lines.
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See http://wrapper.tanukisoftware.com/doc/english/release-notes.html
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for additional information. I2P PPA package users should have received this update in the last week of December.
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If you do not use our PPA package and would like to update your wrapper manually, follow the instructions at
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http://www.i2p2.de/manualwrapper .
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**{% trans %}Bug Fixes{% endtrans %}**
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- Fix major SSU MTU bug introduced in 0.8.9.The router sometimes sent UDP packets that exceeded the maximum
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size that routers would accept on the receive side. This resulted in a lot of dropped packets, tunnel build problems,
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and connection problems. One thing that contributed to us missing the problem was that 0.8.9 was released in the
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middle of the huge network expansion in early October, when network performance was already deteriorating rapidly.
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- Fix major SSU fragmentation bug present since 2005. UDP corrupted transmit messages when the message size
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was an exact multiple of the fragmentation size.
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- Fix major decompression bugs present since 2005 that caused message corruption and data loss at multiple protocol layers.
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- Snark doesn't always delete directories
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- Fix all character case conversion (Turkish four i problem)
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- Whitelist more IRC commands
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- Remove expired reseed cert
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**{% trans %}Other{% endtrans %}**
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- Speed up the inefficient GeoIP lookup
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- Optimize several heavily-used utility functions
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- Don't drop the transport connection when receiving an invalid message, it isn't necessary and could be an attack vector
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- Console light theme update
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- Move the complex network configuration stuff to a new console page
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- Add a link to hide the news in the console
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- Allow numerous additional IRC commands through the IRC filter
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- Several other cleanups, optimizations, and object caches added
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- New Estonian translation (thanks ajutine)
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- Spanish, Swedish, Ukrainian translation updates
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**{% trans %}SHA256 Checksums:{% endtrans %}**
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::
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7a05b96c535f565b06aeec3b83fca6245b1159003d4e2da2149374ba0f476847 i2pinstall_0.8.12.exe
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019d6018e7093650cf67fd883b0cf0f12aa2f4f0cddc5ef6a08e6147af07f142 i2psource_0.8.12.tar.bz2
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a9556998b136d47b124749f426d86514e7128094308f03085b889f34bbdf8dc0 i2pupdate_0.8.12.zip
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bb7be1dc9bdcc9b2db2587988325b4ea7c81e9eeb542ebcb17e0d6de29fc98d3 i2pupdate.su2
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491722ef1a641512fc3bbaf825d5d1671b701e32b1298572f2820ab7fbf9851d i2pupdate.sud
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