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Re: [tcf-dev] WebSocket support in TCF

Hello Martin,

On 8/9/2016 7:59 PM, Oberhuber, Martin wrote:

Hi Didier,

 

For using libwebsockets, you’d have to file a “works-with”  IPZilla CQ and have that approved by the Eclipse Tools PMC.

Since it’s “LGPL + Exception”, Eclipse Legal/IP staff will probably scrutinize it quite closely so may take some time until you can actually commit code (though it might be that “works-with” allow parallel checkin until approved, I’m not sure).

I only make use of a DLL; I am not sure this introduces any legal/IP question. If I would link statically with libwebsockets it would be the case but not with a shared link (or we would have the same issue when linking with libc). Anyway, if you can point me to any document about the process I must follow; I would be happy to do it.

 

My other question is, if you are not planning to contribute any client, could you still contribute any “example” that would allow unit-testing or demoing the new connectivity ? Maybe a minimal _javascript_ thingy that could run inside Orion or Node.js ? – Eclipse is about “fameworks and exemplary tools” so having the feature without any sort of (even the simplest) client does not look ideal to me.

The "C" client will be available. I will provide some documentations on how to create a simple "C" WebSocket TCF client and server and connect them together but this will not be different from what we do with "C". Regarding _javascript_; we may also release a TCF _javascript_ client soon but this is not yet available.

Didier

 

Thanks,

Martin

--

Martin Oberhuber, SMTS / Product Owner – Development Tools, Wind River

direct +43.662.457915.85  fax +43.662.457915.6

 

 

From: <tcf-dev-bounces@xxxxxxxxxxx> on behalf of Didier Brachet <didier.brachet@xxxxxxxxxxxxx>
Reply-To: TCF Development <tcf-dev@xxxxxxxxxxx>
Date: Tuesday 9 August 2016 at 17:40
To: TCF Development <tcf-dev@xxxxxxxxxxx>
Subject: [tcf-dev] WebSocket support in TCF

 

Hello,

I would like to add support for WebSocket channel in TCF agent; I already have a prototype working and I should be able to commit soon my changes in org.eclipse.tcf.agent GIT repository. Before I commit any change; I would like to get agreement on what I am planning to do:

  • WebSocket support will be implemented using libwebsockets library (https://libwebsockets.org/). The libwebsockets license allows static linking without LGPL license propagation. Anyway, I would not use static linking but instead use dynamic linking and the libwebsockets library will have to be built outside TCF agent GIT repo (similar to what is done with Lua). Do you foresee any issue?
  • I plan to support only cmake build for WebSocket support (this can be extended in the future).
  • Configuring/Building TCF agent with libwebsockets support will require some dedicated documentation. I plan to put this in org.eclipse.tcf.git GIT repo and then update the "Getting Started" guide to reflect this.
  • I don't plan to add a Java WebSocket client for now; maybe in the future...

Any comment/suggestion is welcome.

Regards,
Didier

-- 
Didier Brachet, Principal Technologist, Wind River
direct (33) 297.427.286 fax (33) 297.424.550


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-- 
Didier Brachet, Principal Technologist, Wind River
direct (33) 297.427.286 fax (33) 297.424.550

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