Nmap Development: Re: [BUG] NSE/Nsock filehandle exhaustion

[majek04 <majek04 () gmail com>]

On 8/28/07, Brandon Enright <bmenrigh () ucsd edu> wrote:
> Maybe there needs to be some (tunable) cap on the number parallel NSE
> scripts or number of sockets allowed open by NSE at a time.  I'm thinking
> that nmap.new_socket() could block if the number of connected/open sockets
> goes above some threshold.
>
> Brandon
Hi!

I implemented it exactly as you proposed. nsock_connect blocks when the
number of opened connections exceeds some threshold.

For this moment this threshold is hardcoded  in
#define NSOCK_DESCRIPTORS_THRESHOLD 768
(btw. in future maybe it's good idea to decrease this value to 1 for
easier nse debugging, you know, only one script running at a time)

My patch is rather hackish but it should work.
(It can run two times lua_yield on lua thread, but it seems that it isn't
bad, although it's not theoretically proper I think),


Cheers!
 Marek Majkowski

(patch attached)

Attachment: nmap-4.22SOC6-nse-descriptor-limit.diff
Description:

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