Initial draft changelog for 0.2.3.1-alpha

This commit is contained in:
Nick Mathewson
2011-05-03 21:33:10 -04:00
parent 993536e78e
commit 5ee5103f63
26 changed files with 132 additions and 133 deletions
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o Build changes
- Our build system requires automake 1.6 or later to create the
Makefile.in files. Previously, you could have used 1.4.
This only affects developers and people building Tor from git;
people who build Tor from the source distribution without changing
the Makefile.am files should be fine.
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o Minor build changes:
- Use autoreconf to launch autoconf, automake, etc from autogen.sh.
This is more robust against some of the failure modes associated
with running the autotools chain on its own.
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o Major features
- Tor can now optionally build with the "bufferevents" buffered IO
backend provided by Libevent, when building with Libevent 2.0.7-rc
or later. To use this feature, make sure you have the latest possible
version of Libevent, and run autoconf with the --enable-bufferevents
flag. Using this feature will make our networking code more flexible,
lets us stack layers on each other, and let us use more efficient
zero-copy transports where available.
- As an experimental feature, when using the "bufferevents" buffered
IO backend, Tor can try to use Windows's IOCP networking API. This
is off by default. To turn it on, add "DisableIOCP 0" to your torrc.
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o Major features:
- Allow EntryNodes to include country codes like {de} or IP addresses
or network masks. Previously we had disallowed these options
because we didn't have an efficient way to keep the list up to
date. Resolves bug 1982.
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o Minor features:
- If we did find a configuration file, log a message saying where we found
it during startup. Implements ticket 2444.
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o Minor features:
- Ordinarily, Tor does not count traffic from private addresses
(like 127.0.0.1 or 10.0.0.1) when calculating rate limits or
accounting. There is now a new option, CountPrivateBandwidth, to
disable this behavior. Patch from Daniel Cagara.
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o Minor packaging issues
- Create the /var/run/tor directory on startup on OpenSUSE if it is
not already created. Patch from Andreas Stieger. Fixes bug 2573.
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o Minor features:
- Implements --enable-static-tor for configure time. Implements ticket
2702. Idea, general hackery and thoughts from Alexei Czeskis, John
Gilmore, Jacob Appelbaum.
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o Code simplifications
- We no longer need link tor-gencert, tor-resolve, or tor-checkkey
against libevent; they don't use them, and our code was already
refactored not to force them to use them.
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o Minor features
- If you set the NumCPUs option to 0, Tor will try to detect how many
CPUs you have. This is the new default behavior.
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o Minor features:
- Turn on directory request statistics by default and include them in
extra-info descriptors. Don't break if we have no GeoIP database.
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o Minor features:
- Make logging resolution configurable and change default from 1
millisecond to 1 second. Implements enhancement 1668.
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o Minor features:
- Relays that set "ConnDirectionStatistics 1" write statistics on the
birectional use of connections to disk every 24 hours.
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o Minor features:
- Add GeoIP file digest to extra-info descriptor. Implements
enhancement 1883.
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o Minor feature removals
- Removed old code to work around versions of Tor so old that they
used multiple forked processes to handle DNS requests. Such
versions of Tor are no longer in use as servers.
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o Minor features (controller)
- Add a new SIGNAL event to the controller interface so that
controllers can be notified when Tor handles a signal. Resolves
issue 1955. Patch by John Brooks.
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o Minor features (controller)
- Add GETINFO options to get total bytes read and written. Patch
from pipe, revised by atagar. Resolves ticket 2345.
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o Minor features
- Implement some GETINFO controller fields to provide information about
the Tor process's pid, euid, username, and resource limits.
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o Minor features
- Add a new 'Heartbeat' log message type to periodically log a
message describing Tor's status at level Notice. This feature
is meant for operators who log at notice, adn want to make sure
that their Tor server is still working. Implementation by
George Kadianakis.
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o Minor bugfixes:
- Correct a broken faq link in the INSTALL file. Fixes bug 2307.
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o Major features:
- Caches now download and cache all the consensus flavors that
they know about. This allows them to assess which microdescriptors
they need to fetch.
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o Code refactorings
- Unified our node-listing and selecting logic. We had at least
two major ways to look at the question of "which Tor servers do
we know about": our list of router descriptors, and the current
consensus. We're adding a third in microdescriptors. Having
so many systems without an abstraction layer over them was
hurting the codebase. Now, we have a new "node_t" abstraction
that presents a consistent interface to a client's view of
a Tor node, and holds (nearly) all of the mutable state
formerly in routerinfo_t and routerstatus_t.
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o Features:
- Servers now accept and queue data on not-yet-connected
streams. Previously, such data wasn't allowed. This forced
clients to wait for a CONNECTED cell before sending their
data, thus adding a round trip to stream setup. (Patch from
Ian Goldberg; implements the server side of Proposal 174.)
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o Code simplifications and refactoring:
- Use SSL_get_ex_data to map SSL objects to tor_tls_t objects: there's
no need for a hash table.
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o Major features:
- Tor now has the ability to wrangle NAT devices like a good network cowbot
with the tor-fw-helper tool. The tor-fw-helper tool supports Apple's
NAT-PMP protocol and the UPnP standard for TCP port mapping. This
optional tool may be enabled at compile time by configuring with
'--enable-upnp' or '--enable-natpmp' or with both. This tool may be
called by hand or by Tor. By configuring the PortForwarding option, Tor
will launch the helper on a regular basis to ensure that the NAT mapping
is regularly updated. Additionally, a user may also specify an
alternative helper by using the PortForwardingHelper option. The helper
may be specified by name or with the full path to the helper. The default
helper is named 'tor-fw-helper' and any alternative helper must take the
tor-fw-helper-spec.txt into account.