Package org.cometd.bayeux.client

Interface ClientSession.Extension

All Known Implementing Classes:

AckExtension, BinaryExtension, TimestampClientExtension, TimesyncClientExtension

Enclosing interface:

ClientSession

public static interface ClientSession.Extension

Extension API for client session.

An extension allows user code to interact with the Bayeux protocol as late as messages are sent or as soon as messages are received.

Messages may be modified, or state held, so that the extension adds a specific behavior simply by observing the flow of Bayeux messages.

See Also:

• ClientSession.addExtension(Extension)

Method Summary

Modifier and Type	Method	Description
default void	incoming(ClientSession session, Message.Mutable message, Promise<Boolean> promise)	Callback method invoked every time a message is incoming.
default void	outgoing(ClientSession session, Message.Mutable message, Promise<Boolean> promise)	Callback method invoked every time a message is outgoing.
default boolean	rcv(ClientSession session, Message.Mutable message)	Callback method invoked every time a normal message is received.
default boolean	rcvMeta(ClientSession session, Message.Mutable message)	Callback method invoked every time a meta message is received.
default boolean	send(ClientSession session, Message.Mutable message)	Callback method invoked every time a normal message is being sent.
default boolean	sendMeta(ClientSession session, Message.Mutable message)	Callback method invoked every time a meta message is being sent.

Method Details

incoming

default void incoming(ClientSession session,
 Message.Mutable message,
 Promise<Boolean> promise)

Callback method invoked every time a message is incoming.

Parameters:

session - the session that sent the message

message - the incoming message

promise - the promise to notify whether message processing should continue

rcv

default boolean rcv(ClientSession session,
 Message.Mutable message)

Callback method invoked every time a normal message is received.

Parameters:

session - the session object that is receiving the message

message - the message received

Returns:

true if message processing should continue, false if it should stop

rcvMeta

default boolean rcvMeta(ClientSession session,
 Message.Mutable message)

Callback method invoked every time a meta message is received.

Parameters:

session - the session object that is receiving the meta message

message - the meta message received

Returns:

true if message processing should continue, false if it should stop

outgoing

default void outgoing(ClientSession session,
 Message.Mutable message,
 Promise<Boolean> promise)

Callback method invoked every time a message is outgoing.

Parameters:

session - the session that sent the message

message - the outgoing message

promise - the promise to notify whether message processing should continue

send

default boolean send(ClientSession session,
 Message.Mutable message)

Callback method invoked every time a normal message is being sent.

Parameters:

session - the session object that is sending the message

message - the message being sent

Returns:

true if message processing should continue, false if it should stop

sendMeta

default boolean sendMeta(ClientSession session,
 Message.Mutable message)

Callback method invoked every time a meta message is being sent.

Parameters:

session - the session object that is sending the message

message - the meta message being sent

Returns:

true if message processing should continue, false if it should stop