For asynchronous message exchanges, messages sent to your country, are delivered in the domestic dowload queue.

To process a message there are three choices that can be made:

  1. Use the EUCARIS web client to read and retrieve the message from the queue.
  2. A processing system in the national domain ‘pulls’ the message from the queue.
  3. The message is ‘pushed’ to a processing system in the national domain.

The first choice may be the good choice if (part of) the processing is manual, involving user evaluation. Please note that this choice is only possible if for the service a retrieval option is built into the EUCARIS web client. For example, a RESPER notification can be retrieved using the EUCARIS web client. However, a Salzburg message or IVI notification cannot be retrieved using the web client, because for these services there is no web client available.

 

If a message is to be processed by a system in the national domain, you may choose to configure EUCARIS to push the message to your system. Configuration is done via the EUCARIS Management Client, menu item “Service configuration’. For each service, you can enable or disable ‘async forwarding’. Enable it by checking the ‘async forward’ checkbox. If you enable ‘async forward’, you must also specify the URL of the receiving system in the ‘URL’ field.

Please note that by default, messages do not disappear from the download queue after they have been pulled or pushed. If you do not set a purge regime, messages will stay in the queue, and can be pushed or pulled again. However, if the download queue is not purged regularly, the number of messages will grow over time. Eventually, this causes stability issues and performance problems.

To control the numbers of messages in the download queue, please configure a purging regime.

 

The service configuration and the configuration of queue purging is described in further detail in the EUCARIS – Installation and Operation Manual., which can be found here.

Retrieval of a message from the EUCARIS download queue is described in the EUCARIS – Custom Development Manual, which can be found here.