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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘MQ Message Queueing/Queuing’ Category

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GitHub – arendst/Sonoff-Tasmota: Provide ESP8266 based itead Sonoff with Web, MQTT and OTA firmware using Arduino IDE or PlatformIO

Posted by jpluimers on 2020/09/15

On my things to try on IoT stuff list: [WayBack] GitHub – arendst/Sonoff-Tasmota: Provide ESP8266 based itead Sonoff with Web, MQTT and OTA firmware using Arduino IDE or PlatformIO

Many Sonoff based devices are never updated, so this firmware will likely be a much more secure solution.

Since it supports MQTT, it should be far easier to integrate into home automation solutions.

Via a comment on [WayBack] +ITEAD Studio has just launched one of the cheapest WiFi smart plug, and it should work in most of the world thanks to 6 different plug types. https://… – Jeroen Wiert Pluimers – Google+

  • How safe would “cheap” be?
  • Linas Naginionis:
    Just flash with Tasmota firmware and you can do whatever you want with it.

The device was announced at

[WayBack] Sonoff S26 WiFi Smart Plug Works in All/Most Countries, Sells for under $10

–jeroen

Read the rest of this entry »

Posted in Development, MQ Message Queueing/Queuing, MQTT, Software Development | Leave a Comment »

The ##Netherlands saw a big I.T. project meant to deliver a new citizen regis…

Posted by jpluimers on 2017/11/30

Interesting: https://github.com/MinBZK/OperatieBRP

[WayBack] The Netherlands saw a big I.T. project meant to deliver a new citizen registry system fail. So they did one thing right. All the source code is now on github… – Jan Wildeboer – Google+

It includes both documentation and source code.

A bit of browsing reveals at least some of the technologies used:

Most of the SQL code seems to be generated.

There are truckloads of .XML configuration files, typical for a Java environment. Some configuration is in .properties files.

–jeroen

Posted in ActiveMQ, Development, Java, Java Platform, MQ Message Queueing/Queuing, Open Source, PostgreSQL, Software Development | Leave a Comment »

Some Tibco Rendezvous links

Posted by jpluimers on 2016/03/08

For my own reference:

–jeroen

Posted in Development, MQ Message Queueing/Queuing, Software Development, Tibco Rendezvous (RV) | Leave a Comment »

Delphi hinting directives: deprecated, experimental, library and platform

Posted by jpluimers on 2014/10/01

I’ve been experimenting with the Delphi hinting directives lately to make it easier to migrate some libraries to newer versions of Delphi and newer platforms.

Hinting directives (deprecated, experimental, library and platform) were – like the $MESSAGE directive – added to Delphi 6.

Up to Delphi 5 you didn’t have any means to declare code obsolete. You had to find clever ways around it.

Warnings for hinting directives

When referring to identifiers marked with a hinting directive, you can get various warning messages that depend on the kind of identifier: unit, or other symbol. Read the rest of this entry »

Posted in Apple Pascal, Borland Pascal, DEC Pascal, Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 6, Delphi 7, Delphi 8, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Development, Encoding, FreePascal, ISO-8859, ISO8859, Java, Lazarus, MQ Message Queueing/Queuing, QC, Reflection, Software Development, Sybase, Unicode, UTF-8, UTF8 | 2 Comments »

WebSphere MQ errors I encountered.

Posted by jpluimers on 2013/03/26

While porting a library from Delphi 2006 to Delphi XE2.

The really cool thing is that the Windows Event Log contains details of what I did wrong (:

  • 2277 (08E5) (RC2277): MQRC_CD_ERROR
    Oops, typo on the header file.The MQCD structure supplied was not valid.The value of the ‘CLWLChannelWeight’ field has the value ‘0’. This value is invalid for the operation requested.Change the parameter and retry the operation.
  • 2538 (09EA) (RC2538): MQRC_HOST_NOT_AVAILABLE
    Oops, typo in the host name (:Remote host ‘Host.Domain’ not available, retry later.The attempt to allocate a conversation using TCP/IP to host ‘Host.Domain’ for channel WebSphereMQChannelName was not successful. However the error may be a transitory one and it may be possible to successfully allocate a TCP/IP conversation later. &P In some cases the remote host cannot be determined and so is shown as ‘????’.Try the connection again later. If the failure persists, record the error values and contact your systems administrator. The return code from TCP/IP is 11001 (X’0′). The reason for the failure may be that this host cannot reach the destination host. It may also be possible that the listening program at host ‘Host.Domain’ was not running. If this is the case, perform the relevant operations to start the TCP/IP listening program, and try again.
  • 2009 (07D9) (RC2009): MQRC_CONNECTION_BROKENTwo causes:- The service job on the AS/400 restarted; need to make the client more robust so it gracefully handles this.
    – WebSphere MQ 7.x needs different initialization than WebSphere MQ 5.x, I didn’t get some of the extra fields initialized correctly.
    Connection to host ‘Host (dot.ted.ip.addr)(TCPPort)’ for channel ‘WebSphereMQChannelName’ closed.An error occurred receiving data from ‘Host (dot.ted.ip.addr)(TCPPort)’ over TCP/IP. The connection to the remote host has unexpectedly terminated. &P The channel name is ‘WebSphereMQChannelName’; in some cases it cannot be determined and so is shown as ‘????’.

    Tell the systems administrator.

–jeroen

Posted in Delphi, Delphi XE2, Development, MQ Message Queueing/Queuing, Software Development, WebSphere MQ | Leave a Comment »

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