jrandom authored 19 years ago and zzz committed 19 years ago

    * Within the tunnel, use xor(IV, msg[0:16]) as the flag to detect dups,
      rather than the IV by itself, preventing an attack that would let
      colluding internal adversaries tag a message to determine that they are
      in the same tunnel.  Thanks dvorak for the catch!
    * Drop long inactive profiles on startup and shutdown
    * /configstats.jsp: web interface to pick what stats to log
    * Deliver more session tags to account for wider window sizes
    * Cache some intermediate values in our HMACSHA256 and BC's HMAC
    * Track the client send rate (stream.sendBps and client.sendBpsRaw)
    * UrlLauncher: adjust the browser selection order
    * I2PAppContext: hooks for dummy HMACSHA256 and a weak PRNG
    * StreamSinkClient: add support for sending an unlimited amount of data
    * Migrate the tests out of the default build jars

2005-06-22  Comwiz
    * Migrate the core tests to junit

comwiz authored 19 years ago and zzz committed 19 years ago

    * Phase 1 of the unit test bounty completed. (The router build script was modified not to build the router
 tests because of a broken dependancy on the core tests. This should be fixed in
 phase 3 of the unit test bounty.)

duck authored 19 years ago and zzz committed 19 years ago

    * Fixed PRNG bug (bugzilla #107)

jrandom authored 19 years ago and zzz committed 19 years ago

    * Added a substantial optimization to the AES engine by caching the
      prepared session keys (duh).

jrandom authored 19 years ago and zzz committed 19 years ago

* increased the maximum number of fragments allowed in a message from 31 to 127,
  reducing the maximum fragment size to 8KB and moving around some bits in the fragment
  info.  This is not backwards compatible.
* removed the old (hokey) congestion control description, replacing it with the TCP-esque
  algorithm implemented
note: the code for the ACK bitfields and fragment info changes have not yet been
implemented, so the old version of this document describes whats going on in the live net.
the new bitfields / fragment info should be deployed in the next day or so (hopefully :)

jrandom authored 19 years ago and zzz committed 19 years ago

    * Cleaned up the peers page a bit more.
more udp stuff:
* add new config option: i2np.udp.alwaysPreferred=true to adjust the bidding
  so that UDP is picked first, even if a TCP connection exists
* fixed the initial clock skew problem (duh)
* reduced the MTU to 576 (largest nearly-universally-safe, and allows a
  tunnel message in 2 fragments)
* handle some races @ connection establishment (thanks duck!)
* if there are more ACKs than we can send in a packet, reschedule another
  ACK immediately

jrandom authored 19 years ago and zzz committed 19 years ago

    * Added a small new page to the web console (/peers.jsp) which contains
      the peer connection information.  This will be cleaned up a lot more
      before 0.6 is out, but its a start.

jrandom authored 19 years ago and zzz committed 19 years ago

    * Reduced some SimpleTimer churn
* add hooks for per-peer choking in the outbound message queue - if/when a
  peer reaches their cwin, no further messages will enter the 'active' pool
  until there are more bytes available.  other messages waiting (either later
  on in the same priority queue, or in the queues for other priorities) may
  take that slot.
* when we have a message acked, release the acked size to the congestion
  window (duh), rather than waiting for the second to expire and refill the
  capacity.
* send packets in a volley explicitly, waiting until we can allocate the full
  cwin size for that message

jrandom authored 19 years ago and zzz committed 19 years ago

* more stats. including per-peer KBps (updated every second)
* improved blocking/timeout situations on the send queue
* added drop simulation hook
* provide logical RTO limits

jrandom authored 19 years ago and zzz committed 19 years ago

    * Reduce the peer profile stat coallesce overhead by inlining it with the
      reorganize.
    * Limit each transport to at most one address (any transport that requires
      multiple entry points can include those alternatives in the address).
udp stuff:
* change the UDP transport's style from "udp" to "SSUv1"
* keep track of each peer's skew
* properly handle session reestablishment over an existing session, rather
  than requiring both sides to expire first

jrandom authored 19 years ago and zzz committed 19 years ago

    * More fixes for the I2PTunnel "other" interface handling (thanks nelgin!)
    * Add back the code to handle bids from multiple transports (though there
      is still only one transport enabled by default)
    * Adjust the router's queueing of outbound client messages when under
      heavy load by running the preparatory job in the client's I2CP handler
      thread, thereby blocking additional outbound messages when the router is
      hosed.
    * No need to validate or persist a netDb entry if we already have it
And for some udp stuff:
* only bid on what we know (duh)
* reduceed the queue size in the UDPSender itself, so that ACKs go
  through more quickly, leaving the payload messages to queue up in
  the outbound fragment scheduler
* rather than /= 2 on congestion, /= 2/3 (still AIMD, but less drastic)
* adjust the fragment selector so a wsiz throttle won't force extra
  volleys
* mark congestion when it occurs, not after the message has been
  ACKed
* when doing a round robin over the active messages, move on to the
  next after a full volley, not after each packet (causing less "fair"
  performance but better latency)
* reduced the lock contention in the inboundMessageFragments by
  moving the ack and complete queues to the ACKSender and
  MessageReceiver respectively (each of which have their own
  threads)
* prefer new and existing UDP sessions to new TCP sessions, but
  prefer existing TCP sessions to new UDP sessions

smeghead authored 19 years ago and zzz committed 19 years ago

    * Added button to router console for manual update checks.
    * Fixed bug in configupdate.jsp that caused the proxy port to be updated
      every time the form was submitted even if it hadn't changed.

jrandom authored 19 years ago and zzz committed 19 years ago

* fail UDP sessions after two consecutive failed messages in different minutes
* honor UDP reconnections

jrandom authored 19 years ago and zzz committed 19 years ago

    * Added a pool of PRNGs using a different synchronization technique,
      hopefully sufficient to work around IBM's PRNG bugs until we get our
      own Fortuna.
    * In the streaming lib, don't jack up the RTT on NACK, and have the window
      size bound the not-yet-ready messages to the peer, not the unacked
      message count (not sure yet whether this is worthwile).
    * Many additions to the messageHistory log.
    * Handle out of order tunnel fragment delivery (not an issue on the live
      net with TCP, but critical with UDP).

jrandom authored 19 years ago and zzz committed 19 years ago

    * Added a pool of PRNGs using a different synchronization technique,
      hopefully sufficient to work around IBM's PRNG bugs until we get our
      own Fortuna.
    * In the streaming lib, don't jack up the RTT on NACK, and have the window
      size bound the not-yet-ready messages to the peer, not the unacked
      message count (not sure yet whether this is worthwile).
    * Many additions to the messageHistory log.
    * Handle out of order tunnel fragment delivery (not an issue on the live
      net with TCP, but critical with UDP).
and for udp stuff:
* implemented tcp-esque rto code in the udp transport
* make sure we don't ACK too many messages at once
* transmit fragments in a simple (nonrandom) order so that we can more easily
  adjust timeouts/etc.
* let the active outbound pool grow dynamically if there are outbound slots to
  spare
* use a simple decaying bloom filter at the UDP level to drop duplicate resent
  packets.

polecat authored 19 years ago and zzz committed 19 years ago

I removed those dumb platform specific makefiles.  They weren't doing what they ought anyway.  If there are platform specific issues, someone please tell me and I'll provide support for it here.  Or patch it yourself.
And this is the big "Fix the Parser" patch.  It turns the sam_parse function in src/parse.c into something that actually works.  Generating the argument list from an incoming SAM thingy is a bit memory churn-y; perhaps when I have time I'll replace all those strdups with structures that simply track the (start,end) indices.
Oh and also I moved i2p-ping to the new system.  Which required 0 change in code.  All I did was fix the Makefile, and add shared library libtool support.  Anyway, so enjoy folks.  It's rare I'm this productive
- polecat

jrandom authored 19 years ago and zzz committed 19 years ago

    * In the SDK, we don't actually need to block when we're sending a message
      as BestEffort (and these days, we're always sending BestEffort).
    * Pass out client messages in fewer (larger) steps.
    * Have the InNetMessagePool short circuit dispatch requests.
    * Have the message validator take into account expiration to cut down on
      false positives at high transfer rates.
    * Allow configuration of the probabalistic window size growth rate in the
      streaming lib's slow start and congestion avoidance phases, and default
      them to a more conservative value (2), rather than the previous value
      (1).
    * Reduce the ack delay in the streaming lib to 500ms
    * Honor choke requests in the streaming lib (only affects those getting
      insanely high transfer rates)
    * Let the user specify an interface besides 127.0.0.1 or 0.0.0.0 on the
      I2PTunnel client page (thanks maestro^!)
(plus minor udp tweaks)

jrandom authored 19 years ago and zzz committed 19 years ago

* removed unnecessary references to i2ptunnel (though i2ptunnelxmlobject still references i2ptunnelxmlwrapper)