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[libextractor] Re: How to store the MHD_Connection object for later use?
From: |
Christian Grothoff |
Subject: |
[libextractor] Re: How to store the MHD_Connection object for later use? |
Date: |
Fri, 11 Dec 2009 12:39:56 +0100 |
User-agent: |
KMail/1.12.2 (Linux/2.6.31-1-amd64; KDE/4.3.2; x86_64; ; ) |
Hi!
You cannot "store" the connection object for later use. You must use it
during the respective callbacks and you may store your own context in the
void** argument of the callback (if needed).
Most importantly, there is no way to put connection objects into a queue ---
the design is such that MHD tells you when you can (and, depending on your
threading model, have to) process connection data. Putting connections onto a
queue for processing, while theoretically possible with "external select" (but
very hard and I'm not going to show how, that'd be a LOT of work), is not
recommended.
Best,
Christian
On Friday 11 December 2009 12:13:39 you wrote:
> Hi Christian,
>
> I am using your libmicrohttpd as the Final Year Project Embedded Http
> Server.
> I am facing a problem right now and stuck.
>
> This is the scenario:
> I need to store the MHD_Connection object somewhere so that i can post
> back the http response back to the browser after i've finished processing
> the logic.
> I tried to memcpy like this:
>
> memcpy(&(q_ptr->connection), connection, sizeof(q_ptr->connection));
>
> and i store it in a structure and send to the message Queue.
>
> Another class will get it back from the Queue and use it.
>
> and it doesn't work when i pass the connection object to MHD_quee_response
>
> MHD_queue_response (&(param1->connection), MHD_HTTP_OK, response);
>
> Finally my program crashed.
>
>
> Any thought?
> Thanks.
>
--
http://grothoff.org/christian/
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