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Updating Internet Direct (Indy) 10 component packages in the Delphi IDE to a newer version is quite time-consuming. Doing backups, searching and removing old source and binary files, changing IDE paths - all these steps cause developers to think twice before trying a new release of the Indy library. Quick switching between versions - to … Continue reading The easy way to update Internet Direct (Indy)
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 … Continue reading Habari Client libraries new versions released
Habari 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 … Continue reading Habari Chat: message exchange for Delphi applications
December 18, 2012 - Habarisoft is pleased to announce version 3.3 of Habari Client for ActiveMQ, a library which provides access to the Apache ActiveMQ open source message broker. ActiveMQ is also the default Java Message Service (JMS) provider in the open source Java EE server Apache Geronimo. Home page: http://www.habarisoft.com/habari_activemq.html Documentation (PDF): http://www.habarisoft.com/download/HabariActiveMQGettingStarted.pdf API documentation (HTML): … Continue reading Habari Client for ActiveMQ 3.3 released
December 12, 2012 - Habarisoft is pleased to announce release 2.3 of its Delphi and Free Pascal client library for the OpenMQ message broker. Open Message Queue (OpenMQ) is an enterprise-quality, production-ready open source message-oriented middleware project and provides enterprise features including clustering for scalability and high availability. Habari Client libraries provide access to production-ready … Continue reading Habari Client for OpenMQ 2.3 released
December 12, 2012 - Habarisoft today released version 1.5 of Habari Client for RabbitMQ, a library which provides easy access to RabbitMQ, the open source messaging system. Habari Client libraries provide acces to production-ready and industry standard based cross-platform application integration, using the peer-to-peer or the publish/subscribe communication model. The main new feature introduced in … Continue reading Habari Client for RabbitMQ 1.5 released
What is a temporary queue? Temporary queues are destinations with a scope limited to the connection that created it, and are removed on the server side as soon as the connection is closed. They are typically used for synchronous messaging (request/reply communication model). Their main advantage is that no queue management to provide unique destination … Continue reading Temporary queue support in Habari Client libraries
Firebird developers can use Firebird events to notify clients about changes in database record data. In the previous post, I showed and discussed some limitations of Firebird events. This post presents a solution based on message-oriented middleware. The solutions in the first post used server-side logic in the Firebird database metadata, implemented with Firebird's procedural … Continue reading Firebird Database Events and Message-oriented Middleware (part 2)
Firebird developers can use Firebird events to notify clients about changes in database record data. In this article, I will show and discuss some limitations of Firebird events and compare possible workarounds with a solution based on message-oriented middleware.How should I implement "server push" for new data, instead of "client pull"?For this article we assume … Continue reading Firebird Database Events and Message-oriented Middleware (part 1)
The STOMP 1.2 specification has been released today. STOMP 1.2 is mostly backwards compatible with STOMP 1.1. There are only two incompatible changes, which affect frame line endings and message acknowledgment. Apart from these, STOMP 1.2 introduces no new features but focuses on clarifying some areas of the specification. STOMP is a platform-independent protocol used … Continue reading STOMP Protocol Specification, Version 1.2 released