Re: How do you deal with lengthy server tasks?

["Biz.122" <biz 122 protonmail com>]

Ok,

So far I got it working. I am doing it asynchronously, which seems to be working pretty well.

Since I am carrying my SoupMessage with me from the server callback (whether it is to a thread or an 
asynchronous cb), occasionally I will get: soup_server_unpause_message: assertion 'SOUP_IS_MESSAGE (msg)' 
failed. Gdb may step in and halt the execution; which is completely understandable.

Because I am out of the server-callback I currently don't know if the SoupMessage is still 'valid'.
How can I determine that the SoupMessage is still in the game?


Best regards,
Biz




Sent with ProtonMail Secure Email.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, February 5, 2019 4:24 PM, Guillaume Poirier-Morency via libsoup-list <libsoup-list gnome org> 
wrote:

> Le dimanche 03 février 2019 à 18:26 +0000, Biz.122 via libsoup-list a
> écrit :
>
> > Hey,
> > I would like to stream some audio with soup server. How would you go
> > about something like that? Each browser request will launch the
> > server callback that does all processing, but I cannot stay in there
> > looping and sending data. This will block any other requests.
> > I looked around a bit and found this:
> > https://github.com/GNOME/libsoup/blob/54014b2d8a7b579b832372cb4dd22df04fefd45e/tests/context-test.c#L41
> > Look at the "SlowData / soup_add_timeout" example.
> > Is this how you would typically perform streaming tasks or large file
> > transfers, and not completely locking up your server callback?
>
> You can pause the message with soup_server_pause_message, launch the
> task in background and resume it later with
> soup_server_unpause_message.
>
> To send data continuously, you can mix that with a chunked response.
>
> soup_message_headers_set_encoding (msg, SOUP_ENCODING_CHUNKED);
> soup_server_pause_message (msg);
> g_thread_pool_push (pool, msg, NULL);
>
> In the thread pool (or asynchronously via the GMainLoop):
>
> soup_message_body_append_take (data, data_len);
> soup_server_unpause_message (msg); // deliver the chunk
>
> // later when done
> soup_message_complete (msg);
> soup_server_unpause_message (msg);
>
> > Best Regards,
> > Biz
> > Sent with ProtonMail Secure Email.
> >
> > libsoup-list mailing list
> > libsoup-list gnome org
> > https://mail.gnome.org/mailman/listinfo/libsoup-list
>
> --
> Guillaume Poirier-Morency guillaumepoiriermorency gmail com
>
> Étudiant à la maîtrise en informatique à l'Université de Montréal
> Chercheur à l'IRIC
>
> Mon blog: https://arteymix.github.io/
> Clé PGP: B1AD6EA5
>
> libsoup-list mailing list
> libsoup-list gnome org
> https://mail.gnome.org/mailman/listinfo/libsoup-list