Class messaging-handler

The primary messaging event handler. It allows users to intercept and change Proton behaviors.

Implementations: C, C++, Java, Python

Common-case application events

Method	Summary	Inputs
on-container-start	The container event loop is started	container
on-container-stop	The container event loop is stopped	container
on-message	A message is received	delivery, message
on-sendable	A message can be sent	sender

Endpoint lifecycle

Method	Summary	Inputs
on-connection-open	The remote peer opened the connection	connection
on-connection-close	The remote peer closed the connection	connection
on-connection-error	The remote peer closed the connection with an error condition	connection
on-session-open	The remote peer opened the session	session
on-session-close	The remote peer closed the session	session
on-session-error	The remote peer closed the session with an error condition	session
on-sender-open	The remote peer opened the sender	sender
on-sender-detach	The remote peer detached the sender	sender
on-sender-close	The remote peer closed the sender	sender
on-sender-error	The remote peer closed the sender with an error condition	sender
on-receiver-open	The remote peer opened the receiver	receiver
on-receiver-detach	The remote peer detached the receiver	receiver
on-receiver-close	The remote peer closed the receiver	receiver
on-receiver-error	The remote peer closed the receiver with an error condition	receiver

Deliveries

Delivery states represent the current status or final outcome of a message transfer. Settlement state determines when a peer can safely consider the transfer resolved.

AMQP: Conceptual overview

Method	Summary	Inputs
on-tracker-accept	The receiving end accepted a delivery	tracker
on-tracker-reject	The receiving end rejected a delivery	tracker
on-tracker-release	The receiving end released a delivery	tracker
on-tracker-modify	The receiving end modified a delivery	tracker
on-tracker-settle	The receiving end settled a delivery	tracker
on-delivery-settle	The sending end settled a delivery	delivery

Flow control

Related: Method receiver.drain

Method	Summary	Inputs	Outputs
on-sender-drain-start	The remote end of the sender requested draining	sender
on-receiver-drain-finish	The remote end of the receiver completed draining	receiver

Error handling

Method	Summary	Inputs	Outputs
on-error	The fallback error handler	error-condition

Transport lifecycle

Method	Summary	Inputs
on-transport-open	The underlying network channel opened	transport
on-transport-close	The underlying network channel closed	transport
on-transport-error	The underlying network channel closed with an error condition	transport