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Merge branch 'maint-0.2.1'
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42
ReleaseNotes
42
ReleaseNotes
@ -3,6 +3,48 @@ This document summarizes new features and bugfixes in each stable release
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of Tor. If you want to see more detailed descriptions of the changes in
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each development snapshot, see the ChangeLog file.
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Changes in version 0.2.1.26 - 2010-05-02
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Tor 0.2.1.26 addresses the recent connection and memory overload
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problems we've been seeing on relays, especially relays with their
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DirPort open. If your relay has been crashing, or you turned it off
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because it used too many resources, give this release a try.
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This release also fixes yet another instance of broken OpenSSL libraries
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that was causing some relays to drop out of the consensus.
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o Major bugfixes:
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- Teach relays to defend themselves from connection overload. Relays
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now close idle circuits early if it looks like they were intended
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for directory fetches. Relays are also more aggressive about closing
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TLS connections that have no circuits on them. Such circuits are
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unlikely to be re-used, and tens of thousands of them were piling
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up at the fast relays, causing the relays to run out of sockets
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and memory. Bugfix on 0.2.0.22-rc (where clients started tunneling
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their directory fetches over TLS).
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- Fix SSL renegotiation behavior on OpenSSL versions like on Centos
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that claim to be earlier than 0.9.8m, but which have in reality
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backported huge swaths of 0.9.8m or 0.9.8n renegotiation
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behavior. Possible fix for some cases of bug 1346.
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- Directory mirrors were fetching relay descriptors only from v2
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directory authorities, rather than v3 authorities like they should.
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Only 2 v2 authorities remain (compared to 7 v3 authorities), leading
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to a serious bottleneck. Bugfix on 0.2.0.9-alpha. Fixes bug 1324.
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o Minor bugfixes:
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- Finally get rid of the deprecated and now harmful notion of "clique
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mode", where directory authorities maintain TLS connections to
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every other relay.
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o Testsuite fixes:
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- In the util/threads test, no longer free the test_mutex before all
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worker threads have finished. Bugfix on 0.2.1.6-alpha.
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- The master thread could starve the worker threads quite badly on
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certain systems, causing them to run only partially in the allowed
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window. This resulted in test failures. Now the master thread sleeps
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occasionally for a few microseconds while the two worker-threads
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compete for the mutex. Bugfix on 0.2.0.1-alpha.
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Changes in version 0.2.1.25 - 2010-03-16
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Tor 0.2.1.25 fixes a regression introduced in 0.2.1.23 that could
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prevent relays from guessing their IP address correctly. It also fixes
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