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<== Date ==> <== Thread ==>

Subject: EPICS web GUIs using websockets
From: <[email protected]>
To: <[email protected]>
Date: Tue, 19 May 2015 10:03:42 +0000
Hi all,

I'm looking to create a web interface for a device running embedded Linux including an on-board IOC. I would like to run a small python based webserver on the device which communicated to the IOC and exposed a web-socket connection to allow the GUI running in the client's browser to set and get PVs.

A while back there was a thread on browser based EPICS GUIs:
http://www.aps.anl.gov/epics/tech-talk/2014/msg01824.php

There were a few responses that used CA on the server and web-sockets to communicate the data to the client:
* http://webpda.org/ (last commit 2013)
* http://epaper.kek.jp/ICALEPCS2013/papers/tuppc110.pdf (can't find the code)
* https://github.com/AustralianSynchrotron/web-epics (last commit March 2014)
* https://github.com/diirt/diirt/tree/master/pods/web-pods (last commit April 2015)

I found that webpods was the most developed, and the only one with a decent specification:
* https://github.com/diirt/diirt/wiki/WebPods-Protocol-Specification-v1

But it was written in java, so I started writing a small Python server so I could reuse the javascript library:
* https://github.com/dls-controls/PyPODS

I've now reached the proof of principle stage, and as far as I can tell, no-one has got beyond that point on any of these projects! Has anyone actually deployed a project like this? Is anyone actively working on something like this?

Thanks,
Tom Cobb    

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Replies:
RE: EPICS web GUIs using websockets Emmanuel Mayssat

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