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PackageDescription
protonCore protocol model and utility classes
proton.eventEvent infrastructure
proton.codecData encode and decode
proton.reactorIO integration and event dispatch
proton.handlersLibrary of tools for event handlinghandlers
proton.securityEncryption and authentication
proton.messengerA home for the Messenger API
proton.extrasExtra classes that extend core Proton functionality
proton.typesData types not supplied by the host language
proton.utilUtility classes not supplied by the host language


The 'handlers' package is expected to contain more classes over time as the number of event-handling behaviors grow.  By contrast, the other packages are expected to mostly stop growing once the necessary functionality is in place.

The 'event' and 'codec' packages are expected to see less mainstream usage and are therefore stowed a little further away.

The base Proton exception or error class goes in 'proton', but more specific exception types would subclasses would reside in the various subpackages above.

There are some classes we intend to deprecate or remove: Connector, Listener, Driver.

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  • Connection, Session, Link, Terminus, Delivery, Transport, Address, Condition AMQP model objects
  • Message , Security - Important user-facing utility classes
  • Condition, ProtonException - Core error handling

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  • Timestamp, Described, UnsignedLong, etc.
  • Map, List, Uuid

Package 'proton.reactor'

  • Reactor, Container

Package 'proton.handlers'

This may grow to have subpackages.

  • MessagingHandler, IncomingMessageHandler, OutgoingMessageHandler

Package 'proton.util'

These are simple extensions to the language-provided standard library.

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