add a changelog for 0.1.0.3-rc

Changes in version 0.1.0.3-rc - 2005-04-08

  o Improvements on 0.1.0.2-rc:

    - Client now retries when streams end early for 'hibernating' or

      'resource limit' reasons, rather than failing them.

    - More automated handling for dirserver operators:

      - Automatically approve nodes running 0.1.0.2-rc or later,

        now that the the reachability detection stuff is working.

      - Now we allow two unverified servers with the same nickname

        but different keys. But if a nickname is verified, only that

        nickname+key are allowed.

      - If you're an authdirserver connecting to an address:port,

        and it's not the OR you were expecting, forget about that

        descriptor. If he *was* the one you were expecting, then forget

        about all other descriptors for that address:port.

      - Allow servers to publish descriptors from 12 hours in the future.

        Corollary: only whine about clock skew from the dirserver if

        he's a trusted dirserver (since now even verified servers could

        have quite wrong clocks).

    - Adjust maximum skew and age for rendezvous descriptors: let skew

      be 48 hours rather than 90 minutes.

    - Efficiency improvements:

      - Keep a big splay tree of (circid,orconn)->circuit mappings to make

        it much faster to look up a circuit for each relay cell.

      - Remove most calls to assert_all_pending_dns_resolves_ok(),

        since they're eating our cpu on exit nodes.

      - Stop wasting time doing a case insensitive comparison for every

        dns name every time we do any lookup. Canonicalize the names to

        lowercase and be done with it.

    - Start sending 'truncated' cells back rather than destroy cells,

      if the circuit closes in front of you. This means we won't have

      to abandon partially built circuits.

    - Only warn once per nickname from add_nickname_list_to_smartlist

      per failure, so an entrynode or exitnode choice that's down won't

      yell so much.

    - Put a note in the torrc about abuse potential with the default

      exit policy.

    - Revise control spec and implementation to allow all log messages to

      be sent to controller with their severities intact (suggested by

      Matt Edman). Update TorControl to handle new log event types.

    - Provide better explanation messages when controller's POSTDESCRIPTOR

      fails.

    - Stop putting nodename in the Platform string in server descriptors.

      It doesn't actually help, and it is confusing/upsetting some people.

  o Bugfixes on 0.1.0.2-rc:

    - We were printing the host mask wrong in exit policies in server

      descriptors. This isn't a critical bug though, since we were still

      obeying the exit policy internally.

    - Fix Tor when compiled with libevent but without pthreads: move

      connection_unregister() from _connection_free() to

      connection_free().

    - Fix an assert trigger (already fixed in 0.0.9.x): when we have

      the rare mysterious case of accepting a conn on 0.0.0.0:0, then

      when we look through the connection array, we'll find any of the

      cpu/dnsworkers. This is no good.

  o Bugfixes on 0.0.9.x:

    - Fix possible bug on threading platforms (e.g. win32) which was

      leaking a file descriptor whenever a cpuworker or dnsworker died.

    - When using preferred entry or exit nodes, ignore whether the

      circuit wants uptime or capacity. They asked for the nodes, they

      get the nodes.

    - chdir() to your datadirectory at the *end* of the daemonize process,

      not the beginning. This was a problem because the first time you

      run tor, if your datadir isn't there, and you have runasdaemon set

      to 1, it will try to chdir to it before it tries to create it. Oops.

    - Handle changed router status correctly when dirserver reloads

      fingerprint file. We used to be dropping all unverified descriptors

      right then. The bug was hidden because we would immediately

      fetch a directory from another dirserver, which would include the

      descriptors we just dropped.

    - When we're connecting to an OR and he's got a different nickname/key

      than we were expecting, only complain loudly if we're an OP or a

      dirserver. Complaining loudly to the OR admins just confuses them.

    - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get

      artificially capped at 500kB.

Changes in version 0.1.0.2-rc - 2005-04-01

  o Bugfixes on 0.1.0.1-rc:

    - Fixes on reachability detection:

      whether the server is hibernating.

Changes in version 0.0.9.8 - 2005-04-07

  o Bugfixes on 0.0.9.x:

    - We have a bug that I haven't found yet. Sometimes, very rarely,

      cpuworkers get stuck in the 'busy' state, even though the cpuworker

      thinks of itself as idle. This meant that no new circuits ever got

      established. Here's a workaround to kill any cpuworker that's been

      busy for more than 100 seconds.

Changes in version 0.0.9.7 - 2005-04-01

  o Bugfixes on 0.0.9.x:

    - Fix another race crash bug (thanks to Glenn Fink for reporting).