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Re: [libmicrohttpd] SSI support
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From: |
Martin Velek |
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Subject: |
Re: [libmicrohttpd] SSI support |
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Date: |
Wed, 29 Aug 2012 09:17:34 +0200 |
Thank you for reply.
Thus I can save a little bit memory because if pool memory is always
used, the allocated space in function
MHD_create_response_from_callback() is never used.
See : line #231 in response.c
if (NULL == (response = malloc (sizeof (struct MHD_Response) + block_size)))
return NULL;
E.g. block_size = 4 -> only 4 bytes overhead.
Martin
On Sat, Aug 25, 2012 at 2:21 PM, Christian Grothoff
<address@hidden> wrote:
> Technically, whatever amount of memory is left in the memory pool
> will be used for the buffer. You can use the
>
> MHD_OPTION_CONNECTION_MEMORY_LIMIT
>
> to set the initial size of the memory pool (default: 32k). Some
> of that memory will go to storing the HTTP headers, the rest will be used as
> the buffer for the response (if the response is generated using
> the method you outlined).
>
> Happy hacking!
>
> Christian
>
>
> On 08/25/2012 01:12 PM, Martin Velek wrote:
>>
>> A supplementary question.
>>
>> Where is decided which buffer will be used for data_generator
>> function? I have tried to set up block_size to 80 or 128 or 256 or
>> 1024 and the data_generator function was always called with a buffer
>> from mem pool, size about 32KB.
>>
>> M.V.
>> On Sat, Aug 25, 2012 at 10:37 AM, Martin Velek<address@hidden>
>> wrote:
>>>
>>> Hello,
>>>
>>> may I ask you, how to correctly implement SSI
>>> (http://en.wikipedia.org/wiki/Server_Side_Includes) pages into
>>> libmicrohttpd?
>>>
>>> E.g. I have a page
>>> #define PAGE "<html><head><title>libmicrohttpd demo</title>"\
>>> "</head><body>Temeprature:<!--#exec cgi="temperature"
>>> --></body></html>"
>>>
>>> The SSI parser knows that he should call const * char
>>> temperature(void) when the string<!--#exec cgi="temperature" --> is
>>> found inside a html file. There is an issue, I cannot prepare the
>>> whole reply in one buffer.
>>>
>>> I have thought about using this function (taken from example)
>>> response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN, xxx,
>>> &data_generator, NULL, NULL);
>>>
>>> And the data_generator, which contains SSI parser, will read from
>>> given filename until<!--#exec cgi="temperature" --> is found and
>>> replace it by the output of const * char temperature(void). If no data
>>> left, it will return MHD_CONTENT_READER_END_OF_STREAM.
>>>
>>> Is it a fancy solution? Or if there is a better way how to handle it,
>>> I will appreciate your help.
>>>
>>> Thank you
>>> Martin Velek
>>
>>
>