[Lispweb] Allegroserve/Webactions POST filesize limit?

[Ng Pheng Siong]

On Wed, Jul 27, 2005 at 07:12:01AM +0000, Petter Gustad wrote:
> Is there a way to limit the size of files transfered to Allegroserve?

According to the aserve manual:

  (get-all-multipart-data request &key type size external-format limit)

"[...] limit can be given an integer value that specifies the maximum size 
of data you're willing to retrieve. By default there is no limit.  This can 
be dangerous as a user may try to upload a huge data file which will take 
up so much Lisp heap space that it takes down the server. If a limit is 
given and that limit is reached, get-all-multipart-data will continue 
to read the data from the client until it reaches the end of the data, 
however it will not save it and will return the symbol :limit to indicate 
that the data being sent to the server exceeded the limit. [...]

"If your application intends to handle very large amounts 
of data being uploaded to the server you would be better off using 
get-multipart-sequence since with that you can write the data buffer 
by buffer to the disk instead of storing it in the Lisp heap."

I've used the latter in code; works as advertised in paserve.

HTH. 

-- 
Ng Pheng Siong <ngps at netmemetic.com>