Michael Justin Delphi, Free Pascal, Messaging, Software Development

Indy 10 TIdTCPServer: Server-side message push example

Get the source code on Github This example uses a Delphi 2009 VCL application with a main form, which contains only one visual component, a TMemo named "MemoLog". Client and server are both started in the FormCreate event. [sourcecode language="Delphi"] procedure TServerPushExampleForm.FormCreate(Sender: TObject); begin ExampleServer := TMyPushServer.Create; ExampleServer.DefaultPort := 8088; ExampleServer.Active := True; ExampleClient := … Continue reading Indy 10 TIdTCPServer: Server-side message push example

Michael Justin ActiveMQ, Delphi, Free Pascal, Java, Messaging, OpenMQ, RabbitMQ, Software Development

AMQP, MQTT, and STOMP Messaging Protocols compared

Andy Piper / vFabric Team published an article in 2013 about three popular protocols for message broker client/server communication: Choosing Your Messaging Protocol: AMQP, MQTT, or STOMP. The STOMP specification (currently at 1.2) can be found here. For Delphi and Free Pascal developers, Habarisoft offers STOMP client libraries designed for and tested with popular open … Continue reading AMQP, MQTT, and STOMP Messaging Protocols compared

Michael Justin ActiveMQ, Delphi, Free Pascal, Java, Messaging, OpenMQ, RabbitMQ, Software Development

Habari Client libraries release 2014.03

Habarisoft announces new release Habari Client libraries are Delphi and Free Pascal libraries for application integration with five popular open source message brokers. Updated versions of these libraries are now available. New features and improvements in this release include improved support for transacted sessions, improved support of STOMP specification for message header properties, more unit … Continue reading Habari Client libraries release 2014.03

Michael Justin Delphi, Free Pascal, Software Development

A RESTful CRUD demo application with Delphi

Habari Web Components is a web application framework for small to medium size HTTP services, based on the Internet Direct (Indy) library. A new demo application - included with full source code in demo/restful-crud - exposes a RESTful API which supports HTTP GET / POST / DELETE commands to read, create and delete data. The … Continue reading A RESTful CRUD demo application with Delphi

Michael Justin ActiveMQ, Delphi, Free Pascal, Java, Messaging, OpenMQ, RabbitMQ, Software Development

Habari Client libraries – new features in first 2014 release (planned for Q1)

Transaction support for message receipt acknowledgement Transactional sending of messages was already supported in all versions of Habari Client libraries. Some library versions1 now also support commit and roll back for the acknowledgement of received messages. When a transaction is rolled back or the connection is closed without a commit, messages which have been acknowledged … Continue reading Habari Client libraries – new features in first 2014 release (planned for Q1)

Michael Justin ActiveMQ, Delphi, Free Pascal, Java, Messaging, OpenMQ, RabbitMQ, Software Development

Habari Client Libraries for Delphi and Free Pascal – new releases

4. December 2013 - New versions of all Habari message broker client libraries are available. The new release of Habari Client libraries is mainly a maintenance release. The new library versions are: Habari Client for ActiveMQ 3.6 (tested with ActiveMQ version 5.9.0) Habari Client for Apollo 1.6 (tested with Apollo version 1.6) Habari Client for … Continue reading Habari Client Libraries for Delphi and Free Pascal – new releases

Michael Justin Delphi, Free Pascal, Messaging, RabbitMQ, Software Development

How to use the RabbitMQ Web-Stomp Plugin with Delphi and Free Pascal

The RabbitMQ open source message broker includes a web-stomp plugin exposing the STOMP protocol over emulated HTML5 WebSockets. Web-Stomp examples are provided as a plugin which is included in the standard distribution and only needs to be enabled (this requires a broker restart). For users of the Delphi and Free Pascal client library Habari Client … Continue reading How to use the RabbitMQ Web-Stomp Plugin with Delphi and Free Pascal

Michael Justin ActiveMQ, Delphi, Free Pascal, Java, Messaging, OpenMQ, RabbitMQ, Software Development

Habari Client Libraries for Delphi and Free Pascal – new releases

New versions of all Habari message broker client libraries is available. The new release of Habari Client libraries introduces new features, including improved Free Pascal support: New: Remote Procedure Call (RPC) demo program New: Heart-beating tests using built-in STOMP server New: Connection parameter "subscribe.receipt" to request and verify broker confirmations for subscriptions New: Connection pool … Continue reading Habari Client Libraries for Delphi and Free Pascal – new releases

Michael Justin Delphi, Software Development

How do I find memory leaks at run time with FastMM4?

Since September 2012, there is a very simple but comfortable way to find FastMM memory leaks in Delphi applications which do not show up at program termination.This type of memory leakis normally not easy to track down, as it is caused by global objects which will be properly freed at the end of the program … Continue reading How do I find memory leaks at run time with FastMM4?

Michael Justin ActiveMQ, Delphi, Free Pascal, Messaging, OpenMQ, RabbitMQ, Software Development

Introducing connection pooling for Habari Client libraries

Habarisoft introduces dynamic connection pooling with the next release of its message broker client libraries for Delphi and Free Pascal. Connection pools save resources in multi-threaded applications, as connections are initialized only once and then shared between threads. They can speed up the program execution because the pool returns and stored them in started state. … Continue reading Introducing connection pooling for Habari Client libraries