Changes from 0.7.8
(Typo fixes, comment addition, unittest changes and refactoring are omitted)

Bug fixes

• Wrap IOErrors and socket.errors as ConnectionTerminatedExceptions
• Fixed crash in _TLSSocket by adding missing methods
• Convert pyOpenSSL specific exceptions into ones SocketServer knows
• Send an internal endpoint error when a BadOperationException is thrown
• Sec-WebSocket-Location header now includes the query part

New features

• Added a SWIG based C++ fast masking library
• Added extra_headers attribute to the request object to allow users to append their own headers
• Added two-pass incompatibility check on extensions

TLS related

• TLS client cert validation can now be set to optional
• Added TLS module selection option

Deprecation

• Moved deflate-stream processor to a separate file to prepare for removing it

Log and debugging

• All log messages in headerparserhandler.py are now prefixed with "mod_pywebsocket: "
• Refined log messages in standalone.py
• Log the TLS module in use
• Fixed Stream's log to be suitable also for use in client
• Log the TLS/SSL cipher in use
• Dispatcher now prints stack trace when AbortedByUserException is raised

Multiplexing experiment

• Updated to conform to draft-ietf-hybi-websocket-multiplexing-07
• Stop worker threads blocked for send quota shortage when the writer thread is done
• Log exceptions thrown in set_read_state and on_writer_done method
• Fixed invalid method call in worker termination code
• Fixed mux parser to handle fragmented control frames inserted between fragmented non-control frames
• Frame/message filters of logical channels are now applied to logical channel messages
• Frame/message filters of the physical connection are now applied to multiplexed messages
• Send a close message when the writer thread exits
• Support extensions for logical channels
• Support bad fragmentation drop code
• Follow extra permessage cost rule

echo_client.py

• Removed Hixie 75 protocol support
• Added pyOpenSSL support
• Added TLS/SSL version option
• Added TLS module selection option
• Fixed bugs of TLS socket closing and sendall method
• Log the TLS/SSL cipher in use
• Added an option to turn off TLS compression

console.html

• When received an ArrayBuffer or Blob, print the size of them
• Added UI to test subprotocol
• Changed layout and style

New HTML tools

• Added benchmark.html - a simple benchmark tool works with benchmark_helper_wsh.py
• Added arraybuffer_benchmark.html - a simple ArrayBuffer read/write performance benchmark tool
• Added eventsource.html - a simple EventSource example works with eventsource.cgi

New handler examples

• abort_wsh.py and abort_handshake_wsh.py
• internal_error_wsh.py
• hsts_wsh.py
• echo_noext_wsh.py

Added bfinal = 1 blocks compression.

• Documentation
• Drop hixie-75 support
• Bug fixes

New feature

• Support client certificate authentication

Misc

• Add new custom log level 'FINE' and 'FINER' for debug

New feature

• Allow handlers to send a close frame with empty body in response of a client initiated closing handshake
• Implement perframe compression extension

Misc

• Implement faster masking
• Improve console.html for test
• Implement strict check on sending close code and control frame body size

New feature

• support ssl library in addition to pyOpenSSL to support TLS

Protocol update

• made validation of Sec-WebSocket-Key strict to conform RFC 4648

New feature

• when logging level is set to debug, shows compression ratio of compression extension

Bug fix

• echo_client.py didn't work since ws_version was not set up correctly

Source code readability

• cleaned up version names (draft 13 and draft 17 -> RFC 6455)

No significant change:

• Some bug fixes and refactoring
• Changed "window_bits" deflate-frame extension parameter to "max_window_bits" to follow the current draft specification

This is the first version which is supporsed to be fully compliant to Hybi-17

Differences from 0.6b6

• Support multiple protocol versions negotiation
• Strict check on header appearance counts
• Attach sample configuration file for apache
• Bug fix on dual stack service in OS X (Support WebKit layout)
• Overlay layout support over apache (fallback to apache on resource path where is no ws handler)
• Unit tests work on Python2.5.1

Differences from 0.6b5

• binary frame support for msgutil.
• support python 2.7
• support handlers of symbolic link to outside of root_dir
• support minimum function of Hybi-13