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...
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
<http://git.warmcat.com/cgi-bin/cgit/libwebsockets> in conjunction with
libmicrohttpd.
On Mon, Jan 23, 2012 at 10:45 AM, Sven Geggus
<[email protected] <mailto:[email protected]>> 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
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