have u know the split command in linux . you can use that to split file
then send it after you can use join command to join files


On Tue, Aug 13, 2013 at 1:00 AM, ruslan_osmanov <nginx-forum@nginx.us>wrote:

> Hi,
>
> I'm writing a filter module which implies a backend to be sending XML with
> information about files that have to be concatenated and sent to the
> client.
>
> One way to send a file is to `ngx_read_file` into a buffer allocated in the
> heap(pool) and push it onto the chain. However, I obviously can't allocate
> ~10G
> in the heap. I have to send it chunk-by-chunk. How do I perform such kind
> of
> I/O?
>
> Regards.
>
> Posted at Nginx Forum:
> http://forum.nginx.org/read.php?2,241796,241796#msg-241796
>
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