Re: [libmicrohttpd] MHD_create_response_from_callback

[Regis Louge]

Here is my callback function :

static ssize_t
push_callback (void *cls, uint64_t pos, char *buf, size_t max)
{
    PushElement *push = cls;
    if(push->pushReceived == 1){
        ...
        Store push data in buf

        ...
        return strlen(buf);
    }
    else return 0;
}

In my answer_to_connection for the URL /push I have :

response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
                                                         32 * 1024,

                                                         &push_callback,
                                                         push,
                                                         &push_free_callback);

           if(response == NULL)
           {
          return MHD_NO;
           }
           MHD_add_response_header (response, "Content-Type", "text/html; charset=utf-8");
           ret = MHD_queue_response (connection, MHD_HTTP_OK, response);

           MHD_destroy_response (response);
           return ret;

For a test case, when my client accesses to /push using curl -N -GET ".../push" he receives all the push notifications like it is suppose to, when I cancel it (^C), nothing happens on my server, request_completed is not called and neither is push_free_callback (which is the cleanup function)

On Thu, Sep 8, 2011 at 8:19 PM, Christian Grothoff <address@hidden> wrote:

Hi!

Can you provide some kind of testcase that shows that MHD doesn't properly
call the cleanup function?

Happy hacking!

Christian

On Thursday, September 08, 2011 12:56:13 PM Regis Louge wrote:
> Hi,
>
> I am currently trying to implement push notifications using libmicrohttpd
> and MHD_create_response_from_callback returning 0 until an event triggers
> the push. This seems to work pretty fine except for when the client
> interrupts the communication, then the cleanup method is not called and
> thus creates a lot of problems and impossibility to "subscribe" again to
> the push stream.
>
> --
> Regis

-- 
Régis LOUGE
Eleve Ingénieur 5° année - ECE Paris - Aalborg Universitet
Mail : address@hidden
Tel : +33 6 62 51 40 91