release 4.26

• introduced PICKLE_PROTOCOL_VERSION config item
• fixed exception handling when dealing with different major Python versions. Using serpent or json now also properly translates exception objects even if the major Python version differ
• because of the new way Pyro deals with serialized exceptions, the wire protocol version was updated to 47. You'll have to update all Pyro4 libraries to 4.26
• name server prints a warning if a protocol error occurs (this helps to spot issues such as serializer protocol mismatches)
• more info in documentation about pickle and numpy
• improved documentation index

release 4.25

• now also puts package name in serpent serialization data for custom class instances (previously only the class name was used)
• requires serpent 1.5 or newer (because of the feature above)
• support for (Linux) abstract namespace AF_UNIX sockets (with a 0-byte at the start of the name)
• register_dict_to_class method added on SerializerBase, to be able to deserialize to particular user defined classes
• docs: mention that you may have to install serpent manually (most notably with alternative Python implementations)
• docs: mention the serialization hooks on SerializerBase
• added ser_custom example that shows how to use the serialization hooks

release 4.24

Pyro 4.24

• Python 3.4 compatibility added (fixed pickle/marshal issues)
• a backwards incompatible change has been implemented regarding the threadpool implementation and configuration, see next two items.
• threadpool is now again a fixed size determined by the new THREADPOOL_SIZE config item (defaults to 16)
• config items removed: THREADPOOL_MINTHREADS, THREADPOOL_MAXTHREADS, THREADPOOL_IDLETIMEOUT
• daemon no longer sends an exception response when a communication error occurred (such as a timeout). This fixes the MSG_PING/disconnect example on linux
• jython: multiplex server type now available (uses select based multiplexing). Be wary, this has not been tested much. When in doubt, use the thread server type.
• python wheel distribution format support added (universal, setup.cfg)
• merged name server initd script improvements that were made for the Debian package (easy enable/disable, use sh instead of bash, etc)

release 4.23

Pyro 4.23

• Pyro4.test.echoserver now correctly runs the NS’s broadcast server as well
• unix domain socket creation no longer fails when bind or connect address is unicode instead of str
• docs: added more info on dealing with new serialization configuration in existing code
• docs: improved name server documentation on registering objects
• docs: various small updates

release 4.22

Pyro 4.22

• support added in daemon to accept multiple serializers in incoming messages
• new config item added for that: SERIALIZERS_ACCEPTED (defaults to ‘safe’ serializers)
• wire protocol header changed. Not backwards compatible! New protocol version: 46.
• wire protocol: header now contains serializer used for the data payload
• wire protocol: header is extensible with optional ‘annotations’. One is used for the HMAC digest that used to be in all messages even when the hmac option wasn’t enabled.
• refactored core.MessageFactory: new submodule Pyro4.message. If you used MessageFactory in your own code you’ll need to refactor it to use the new Pyro4.message.Message API instead.
• disconnects example client code updated to reflect this API change
• you can now write the protocol in URIs in lowercase if you want (“pyro:...”) (will still be converted to uppercase)
• fixed poll server loop() not handling self.clients which caused crashes with a custom loopCondition
• fixed some unit test hang/timeout/crash issues
  improved unit tests for jython, disabled ipv6 tests for jython because of too many issues.
  improved unit tests for ironpython.

release 4.21

Pyro 4.21

• fixed denial of service vulnerabilities in socket servers
• MSG_PING message type added (internal server ping mechanism)
• disconnects example added that uses MSG_PING
• more exception types recognised in the serializers (such as GeneratorExit)
• fixed async regression when dealing with errors (properly serialize exceptionwrapper)
• fixed warehouse and stockmarket tutorials to work with new serializer logic
• fixed examples that didn't yet work with new serializer logic
• fixed unit tests to use unittest2 on Python 2.6
• no longer supports jython 2.5. You'll have to upgrade to jython 2.7.
• got rid of some byte/str handling cruft (because we no longer need to deal with jython 2.5)
• implemented autoproxy support for serpent and json serializers. It is not possible to do this for marshal.
• fixed serpent serialization problem with backslash escapes in unicode strings (requires serpent >= 1.3)