Release Notes - FIX Engine C++ - Version 4.4.0

Improvement

• [CPP-3676] - BREAKING CHANGE: Split ValuesEnums.h into version-specific files and remove it from FIXEngine.h
• [CPP-3675] - BREAKING CHANGE: Split Tags.h into version-specific files and remove it from FIXEngine.h
• [CPP-3665] - ISessionListener::onStateChange(..) should not be called under Session's lock
• [CPP-3663] - Do not call listener callbacks under session lock when possible
• [CPP-3661] - BREAKING CHANGE: Session::state() should not be called under Session's lock
• [CPP-3658] - Add state change diagram to the documentation
• [CPP-3634] - Improve the handling of the "EXCEPTION: Cannot bind socket to 0.0.0.0:4500. An attempt was made to access a socket in a way forbidden by its access permissions. System error code = 10013" error message
• [CPP-3626] - Improve "Using session send batch" article
• [CPP-3624] - Improve the "Typed Messages Generator" article
• [CPP-3619] - Add enum values from FIX 5.0 SP2 Extension Pack
• [CPP-3618] - Add tags from FIX 5.0 SP2 Extension Pack
• [CPP-3615] - The scheduler should catch exceptions when resetting the local sequence numbers of a session
• [CPP-3611] - Replace FIX50SP2EP258 dictionary with more recent FIX50SP2EP264
• [CPP-3600] - Speed up the check sum verification and calculation
• [CPP-3594] - BREAKING CHANGE: Remove the `optionLevel` member from the `SocketOption` struct
• [CPP-3588] - Improve spinning timeout articles
• [CPP-3578] - Replace FIX50SP2EP257 dictionary with more recent FIX50SP2EP258
• [CPP-3549] - Describe the detection of ill-formed repeating groups
• [CPP-3541] - BREAKING CHANGE: Improve batch send methods
• [CPP-3540] - Add the maxPacketSize parameter to batch send methods
• [CPP-3535] - Add a note that the message grouping cannot be used with the batch sending feature.
• [CPP-2946] - BREAKING CHANGE: Typed enum value constants should be compile time constants

Task

• [CPP-3623] - Include TypedMessagesGenerator to the distribution package

New Feature

• [CPP-3584] - Support "isRequired" attribute in the "Component" xml node
• [CPP-3569] - Add an option to validate checksums of incoming messages
• [CPP-3520] - Support HTTP Proxy
• [CPP-3494] - Add Message::toJson() and Message::toXml() methods
• [CPP-3410] - Thread Pool Sample
• [CPP-3362] - Make API C++11/14/17/20 friendly
• [CPP-3294] - Add FixDictionaryValidator sample

Bug

• [CPP-3547] - Logon exception is not thrown when acknowledging Logon is blocked in Receiving thread