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Chapter 1. Introduction
Abstract
Red Hat JBoss A-MQ clients can connect to a broker using a variety of transports and APIs. The connections are highly configurable and can be tuned for the majority of use cases.
1.1. JBoss A-MQ Client APIs
Transports and protocols
Red Hat JBoss A-MQ uses OpenWire as its default on the wire message protocol. OpenWire is a JMS compliant wire protocol that is designed to be fully-featured and highly performant. It is the default protocol of JBoss A-MQ. OpenWire can use a number of transports including TCP, SSL, and HTTP.
In addition to OpenWire, JBoss A-MQ clients can also use a number of other transports including:
- Simple Text Orientated Messaging Protocol(STOMP)—allows developers to use a wide variety of client APIs to connect to a broker.
- Discovery—allows clients to connect to one or more brokers without knowing the connection details for a specific broker. See Using Networks of Brokers.
- VM—allows clients to directly communicate with other clients in the same virtual machine. See Section 2.8, “Intra-JVM Connections”.
- Peer—allows clients to communicate with each other without using an external message broker. See Section 2.9, “Peer Protocol”.
For details of using the different the transports see the Connection Reference.
Supported Client APIs
JBoss A-MQ provides a standard JMS client library. In addition to the standard JMS APIs the Java client library has a few implementation specific APIs.
JBoss A-MQ also has a C++ client library and .Net client library that are developed as part of the Apache ActiveMQ project.
Note
This guide only deals with the JBoss A-MQ client libraries.
The STOMP protocol allows you to use a number of other clients including:
- C clients
- C++ clients
- C# and .NET clients
- Delphi clients
- Flash clients
- Perl clients
- PHP clients
- Pike clients
- Python clients
The AMQP client are currently available for the following clients:
- C++ Clients
- Python clients
- .NET clients
Configuration
There are two types of properties that affect client connections:
- transport options—configured on the connection. These options are configured using the connection URI and may be set by the broker. They apply to all clients using the connection.
- destination options—configured on a per destination basis. These options are configured when the destination is created and impact all of the clients that send or receive messages using the destination. They are always set by clients.
Some properties, like prefect and redelivery, can be configured as both connection options and destination oprions.
