Habari Client for OpenMQ 2.5a1 released

May 7, 2013 – Habarisoft is pleased to announce release 2.5a1 of its
Delphi and Free Pascal client library for the Open MQ open source
message broker (http://mq.java.net/).

This is the first alpha of release 2.5, which introduces support for
Indy 10.6 and has been tested with build 14 of Open MQ 5.0, the
next-generation message broker version which implements JMS 2.0
(introduced with the new Java EE 7.0 specification). Continue reading

RabbitMQ 3.1.0 message broker released

The RabbitMQ team announced the release of RabbitMQ 3.1.0 – This release introduces eager synchronisation of mirror queue slaves, automatic cluster partition healing, and improved statistics (including charts) in the management plugin. It also adds many smaller new features, bug fixes and performance improvements.
The developers encourage all users of earlier versions of RabbitMQ to upgrade to this latest release.

For Delphi and Free Pascal, Habarisoft offers a client library for RabbitMQ 2.8.7 and newer.

HornetQ 2.3.0.Final released

JBoss Community has released the final release of HornetQ 2.3.0. This includes new features such as replication, multiple backups, multiple failover, fallback and STOMP 1.2 support as well as many other enhancements, fixes and performance tweaks.

A STOMP based Delphi and Free Pascal client library for HornetQ is available from Habarisoft.

Delphi Client for HornetQ: sending 11000+ STOMP messages per second

79microsecondsWith the current release of Habari Client for HornetQ, Delphi and Free Pascal applications can send messages to a HornetQ message broker at a rate of more than 11000 to 12000 messages per second (less than 80 microseconds per message) – on very modest hardware and running the HornetQ server on the same system, even while receiving more than 1000 messages per second from the same broker.

The next release will introduce support for STOMP level 1.2 and the HornetQ 2.3.0 open source message broker.

 

 

Habari Client for HornetQ 2.0 released

April 2, 2013 – Habarisoft is pleased to announce release 2.0 of Habari Client for HornetQ. HornetQ is an open source project from the JBoss Community to build a multi-protocol, embeddable, very high performance, clustered, asynchronous messaging system. HornetQ is the default Java Message Service (JMS) provider in JBoss Application Server, but can also used stand-alone.

This library provides Delphi and Free Pascal developers access to production-ready and industry standard based cross-platform application integration, using the peer-to-peer or the publish/subscribe communication model.

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Habari Client libraries new versions released

The new release of Habari message broker client libraries introduces new features, including:

  • new connection parameter “send.receipt” to enable broker receipt confirmations for all outgoing messages
  • new connection parameter “disconnect.receipt” to enable broker receipt confirmations for disconnect operations
  • new connection parameter “tcp.keepalive” to enable TCP keep-alive (Indy only)
  • resource saving on-demand creation of threads for asynchronous message receive
  • improved support for heart-beating

The full release notes are included in the “Getting Started” PDF documentation.

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Habari Chat: message exchange for Delphi applications

habarichatHabari Chat is a demo application for the Habari Client libraries, available with full source code and as executable in the demo downloads.

Sending broadcast messages

After choosing a chatroom name and a nickname, the user interface allows to send text messages. For system messages – for example when users enter or leave a chatroom – the code below is used:

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Automatic reconnect with Habari message broker client libraries

The next release of Habari message broker client libraries includes an example for automatic reconnect in case of connection loss.

It uses two nested loops, where the outer loop connects and disconnects, and the inner loops processes (sends or receives) messages. If an exception occurs while sending or receiving data on the TCP socket, the program leaves the inner loop, closes the connection and restarts the outer loop.

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Ubuntu 13.04 will ship with RabbitMQ 3.0.2 (or newer)

From the launchpad details, the rabbitmq-server included in Ubuntu 13.04 will be at least v3.0.2-1. From the release schedule the final freeze is upon us so it is unlikely that any newer version will be included.

For Delphi and Free Pascal, Habarisoft offers a client library for RabbitMQ wich has been tested with RabbitMQ 2.8.7 and RabbitMQ 3.0.4.