0.9.3 includes extensive low-level changes to the queueing of messages in the router. We implement the CoDel Active Queue Management (AQM) algorithm. We also unify the queueing and priority mechanisms in the transports to aid diagnosis and reduce network latency. Work continues on fixing UDP transport bugs and making UDP more resistant to attacks. There are more changes to improve the performance of the router and reduce its memory usage. Also, we enable i2psnark's DHT support, introduced last release, by default. 如往常一样，此发布中也修复了很多bug，所以推荐更新。
Files are available on the download page.
- I2PSnark DHT: Several bug fixes, enable by default.
- Several SSU fixes including memory leak, and better handling of routers behind firewalls that change UDP ports; additional defenses for malicious packets.
- Fix piece selection (rarest-first) bugs in i2psnark
- Fix bug causing multiple browsers to open at startup
- Fix streaming connection timeout back to 1 minute, was inadvertently changed to 5 minutes; set i2ptunnel server read timeout to 5 minutes, was unlimited
- i2ptunnel 中对 "darkloris" 改进的防护加固
- More validation at torrent creation in i2psnark
- Several parameter changes in SSU to improve throughput
- New event log for major events including restarts; show multiple restart lines on graphs
- Remove duplicate messages from logs
- Don't respond to blocked streaming connections with a reset, just drop
- Remove all uses of inefficient SimpleTimer
- More checks for valid IPs and ports entered in console
- Fix bug that wasted a lot of entropy
- Translation updates: Italian, Portuguese, Spanish, Swedish
- Add non-NIO configuration in jetty.xml, recommended for Java 5
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