Re: libpcap on Mac Os X 10.6 Snow Leopard

[Marco De Angelis <thorar () yahoo com>]

Guy Harris <guy <at> alum.mit.edu> writes:

> Your code snippet shows pcap_dispatch() being called at the
> beginning of a "loop forever" loop, so I presume you're not 
> doing a select() to wait for packets to arrive (that has a problem 
> in older versions of *BSD and still has a problem in OS X).

So the call to pcap_dispatch not preceded by a select() could still 
cause problems in 10.6.2?

I tried also to replace the call to pcap_dispatch with pcap_loop, 
without luck.  Higher timeout values (2000) for pcap_open_live 
did not change the behaviour.

> Then run the program and reply with the output it produces.-
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This is the output on my machine:

BIOCGRTIMEOUT = 0x4008426e, t.tv_sec = 1, t.tv_usec = 0

Even if Carter's suggestion works fine, I could see that tcpdump 
is not performing any ioctl() call (nor any select() call). That still 
puzzles me, as tcpdump works perfecly. 

Thanks for the kind support,
Marco

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