Re: NPing running out of sockets

[David Fifield <david () bamsoftware com>]

On Sat, Oct 02, 2010 at 03:30:54PM +0200, Luis MartinGarcia wrote:
> On Fri, Oct 1, 2010 at 5:20 PM, Patrik Karlsson <patrik () cqure net> wrote:
> > While testing the broadcast functionality per Davids instructions [1] I ran into some trouble with Nping.
> > It seems as if sockets are not released properly and slowly increase with each packet being sent.
> > After 252seconds I'm out of sockets on my OS X system. The error looks like this:
> >
> > SENT (246.2010s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (247.2020s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (248.2020s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (249.2030s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (250.2040s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (251.2040s) UDP packet with 20 bytes to 255.255.255.255:67
> > SENT (252.2040s) UDP packet with 20 bytes to 255.255.255.255:67
> > Socket troubles: Too many open files
> > Assertion failed: (nse->iod->sd >= 0), function nsp_add_event, file nsock_core.c, line 1239.
> > Abort trap
>
> Thank you for reporting this. I'm away on holidays, but I'll fix this
> when I get back, in a couple of weeks.

I think that the pending nsock_setup_udp could be used to solve this.
Instead of creating one new iod with a socket for every "connection,"
you could use one unconnected socket for all sends and receives.

Patrik, a workaround is to run as root.

David Fifield
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