first cut at a changelog for 0.1.1.9-alpha

svn:r5343

ChangeLog

@@ -1,3 +1,83 @@
+Changes in version 0.1.1.9-alpha - 2005-11-01
+  o Usability improvements:
+    - Start calling it FooListenAddress rather than FooBindAddress,
+      since none of our users know what it means to bind an address or
+      port. Warn if you use the old name in your config.
+    - Reduce clutter in server logs. We're going to try to make
+      them actually usable now. New config option ProtocolWarnings that
+      lets you hear about how _other Tors_ are breaking the protocol. Off
+      by default.
+    - Divide log messages into logging domains. Once we put some sort
+      of interface on this, it will let people looking at more verbose
+      log levels specify the topics they want to hear more about.
+    - Make directory servers return better http 404 error messages
+      instead of a generic "Servers unavailable".
+    - Check for even more Windows version flags when writing the platform
+      string for servers, and note any we do not recognize.
+    - Clean up all the OpenSSL memory when exiting, so we can detect
+      memory leaks better.
+    - Make directory authorities be non-versioning, non-naming by
+      default. Now we can add new directory servers without requiring
+      their operators to pay close attention.
+    - Start making directory caches retain old routerinfos, so soon
+      clients can start asking by digest of descriptor rather than by
+      fingerprint of server.
+
+  o Performance improvements:
+    - Directory servers now silently throw away new descriptors that
+      haven't changed much if the timestamps are similar. We do this to
+      tolerate older Tor servers that upload a new descriptor every 15
+      minutes. (It seemed like a good idea at the time.)
+    - Inline bottleneck smartlist functions; use fast versions by default.
+    - Add a "Map from digest to void*" abstraction digestmap_t so we
+      can do less hex encoding/decoding. Use it in router_get_by_digest()
+      to resolve a performance bottleneck.
+    - Allow tor_gzip_uncompress to extract as much as possible from
+      truncated compressed data. Try to extract as many
+      descriptors as possible from truncated http responses (when
+      DIR_PURPOSE_FETCH_ROUTERDESC).
+    - Make circ->onionskin a pointer, not a static array. moria2 was using
+      125000 circuit_t's after it had been up for a few weeks, which
+      translates to 20+ megs of wasted space.
+
+  o Security improvements:
+    - Add half our entropy from RAND_poll in OpenSSL.  This knows how
+      to use egd (if present), openbsd weirdness (if present), vms/os2
+      weirdness (if we ever port there), and more in the future.
+
+  o Bugfixes on 0.1.0.x:
+    - Do round-robin writes of at most 16 kB per write. This might be
+      more fair on loaded Tor servers, and it might resolve our Windows
+      crash bug. It might also slow things down.
+    - When a Tor server's IP changes (e.g. from a dyndns address),
+      upload a new descriptor so clients will learn too.
+    - Really busy servers were keeping enough circuits open on stable
+      connections that they were wrapping around the circuit_id
+      space. (It's only two bytes.) This exposed a bug where we would
+      feel free to reuse a circuit_id even if it still exists but has
+      been marked for close. Try to fix this bug.
+    - If we would close a stream early (e.g. it asks for a .exit that
+      we know would refuse it) but the LeaveStreamsUnattached config
+      option is set by the controller, then don't close it.
+
+  o Bugfixes on 0.1.1.8-alpha:
+    - Fix a big pile of memory leaks, some of them serious.
+    - Do not try to download a routerdesc if we would immediately reject
+      it as obsolete.
+    - Resume inserting a newline between all router descriptors when
+      generating (old style) signed directories, since our spec says
+      we do.
+    - When providing content-type application/octet-stream for
+      server descriptors using .z, we were leaving out the
+      content-encoding header. Oops. (Everything tolerated this just fine,
+      but that doesn't mean we need to be part of the problem.)
+    - Fix a potential seg fault in getconf and getinfo using version 1
+      of the controller protocol.
+    - Avoid crash: do not check whether DirPort is reachable when we
+      are suppressing it because of hibernation.
+    - Make --hash-password not crash on exit.
+
+
 Changes in version 0.1.1.8-alpha - 2005-10-07
   o New features (major):
     - Clients don't download or use the directory anymore. Now they