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SSE Push Event Hub

Stable version 2.0.4 (Compatible with OutSystems 11)
Uploaded on 30 May by 
 (11 ratings)

SSE Push Event Hub

Server-Sent Events (SSE) Hub for push streams. *No third parties are required for Server Push/Messaging*
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The SSE Server Hub allows for HTTP Client Requests (through a Rest Expose API) to be persisted for Event Streaming as per protocol1. This is accomplished by switching the mime-type response to the appropriate text/event-stream and flushing the messages complying to the event source format2.

The SSE Client implements the Event Source JS Interface containing the Server Sent Event API, also per protocol3.

Effectively, no third parties are required for Server Push/Messaging.


  • Multiple front-ends/clustered environments are not supported out of the box. Please refer to the docs and demo for a repeater implementation.
  • IOS Native apps are currently not supported

Related Components

Please refer to the Documentation tab for further details.




Release notes (2.0.4)
  • Added a visual cue at Service Studio to know that a particular screen is using an SSE Listener 
  • Fixed custom channel events for the native Event Source call
  • Improved the Multiple Front-End Demo app, now tested

A big thanks to several community members for pointing, suggesting and testing the above, its a huge help! 

License (2.0.4)
Reviews (6)
16 Feb
in version 2.0.3
I love how easy to use this is. Also well documented.
in version 2.0.3
Great component.  Lets me show states for processes the server is running - no need for 3rd party services like Firebase or client side javascript screen actions to refresh widgets etc. 
in version 1.0.5
Great component - VERY easy to use - for Server Sent Events (SSE).
Real-time screen/data/dashboard updates without using 3rd party services like Firebase.