Package io.nats.client

This is the Java client API for NATS, including classes and interfaces for interacting with the NATS server.

See: Description

Interface Summary

Interface	Description
AsyncSubscription	A client uses an AsyncSubscription object to receive messages from a subject.
ClosedCallback	When a Connection is closed for any reason, the Connection object's ClosedCallback is notifed, if one has been registered.
Connection	A Connection object is a client's active connection to NATS.
DisconnectedCallback	When a Connection is disconnected for any reason, the Connection object's DisconnectedCallback is notifed, if one has been registered.
ExceptionHandler	If NATS detects a serious problem with a Connection object, it informs the Connection object's ExceptionHandler, if one has been registered.
MessageHandler	A MessageHandler object is used as a callback to receive asynchronously delivered messages.
ReconnectedCallback	When a previously disconnected Connection is reconnected to a NATS server, the Connection object's ReconnectedCallback is notified, if one has been registered.
Subscription	A client uses a Subscription object to receive messages that have been published to a subject.
SyncSubscription	A client uses an SyncSubscription object to receive messages from a subject synchronously.

Class Summary

Class	Description
ConnectionEvent	A ConnectionEvent object contains information about about an asynchronous event that has occurred on a connection.
ConnectionFactory	A ConnectionFactory object encapsulates a set of connection configuration options.
ConnectionImpl
Constants	Constants for io.nats.client
Message	A Message object is used to send a message containing a stream of uninterpreted bytes.
NUID
Statistics

Enum Summary

Enum	Description
Constants.ConnState	Connection states for AbstractConnection.getState().

Exception Summary

Exception	Description
NATSException

Package io.nats.client Description

This is the Java client API for NATS, including classes and interfaces for interacting with the NATS server.

NATS Applications

A NATS application is composed of the following parts:

• NATS server (gnatsd) - a broker-style server that terminates and manages all NATS client connections and routes messages between clients based on interest in the form of Subscription objects
• NATS clients - the programs, implemented in various languages, that connect to the NATS server and send and receive NATS messages
• NATS messages - Message object are used to communicate data/information between NATS clients using the NATS protocol