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Re: [libmicrohttpd] Websockets?

From: Simon Newton
Subject: Re: [libmicrohttpd] Websockets?
Date: Mon, 23 Jan 2012 10:12:10 -0800

On Mon, Jan 23, 2012 at 9:35 AM, Christian Grothoff
<address@hidden> wrote:
> This has actually been on my "potential features" list for a little while.
>  The implementation is quite trivial; all that is really needed is some
> minor modification to the MHD_response internals / API to give the
> application a way to create a "websocket" response; that response would then
> send the HTTP "UPGRADE" header and the API would need to provide a mechanism
> to return the socket of the connection to the application.
> So a clean implementation would require modifications to MHD (I don't see
> how it could be cleanly done with libwebsockets, other than by running a
> second HTTP-server on a different port, but that's not clean in my book);
> however, those modifications should be small and could be done in a
> backwards-compatible manner.
> The one big major roadblock for implementing this in MHD is that this would
> be tricky to automatically (!) test any such implementation.  Last time I
> checked, libcurl did not have support for websockets, which means we could
> not use our usual approach of having a testcase with a libcurl <->
> libmicrohttpd setup for testing.  And I am hesitant to add (even) more
> features without (good) testcases...
> So if you have a *nice*, *free* C library for a websocket client that we
> could use here, that would be useful and might convince me to think harder
> about what the API should really look like ;-).  But it is already good to
> know that some of you are interested in this feature...

I need to add server triggered notifications to my app so I'd love to
see this as well.

> Happy hacking!
> Christian
> On 01/23/2012 05:54 PM, Jon Nalley wrote:
>> After the 'Upgrade' request Websocket no longer uses HTTP.  You might be
>> able to leverage libwebsockets
>> <> in conjunction with
>> libmicrohttpd.
>> On Mon, Jan 23, 2012 at 10:45 AM, Sven Geggus
>> <address@hidden <mailto:address@hidden>> wrote:
>>    Hello,
>>    looking for a way to get rid of my pseudo server push using delayed
>> ajax
>>    requests I came about the WebSocket-Protokoll.
>>    Would it be possible to implement this using libmicrohttpd without
>>    hacking
>>    the core?
>>    Sven
>>    --
>>    Das allgemeine Persönlichkeitsrecht (Art. 2 Abs.1 i.V.m. Art.1 Abs.
>> 1GG)
>>    umfasst das Grundrecht auf Gewährleistung der Vertraulichkeit und
>>    Integrität
>>    informationstechnischer Systeme. (BVerfG, 1BvR 370/07)
>>    /me is address@hidden, on the Web

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