Re: Multi process sniffing and dropped packets

[Guy Harris <guy () alum mit edu>]

On Jan 12, 2006, at 3:29 PM, Gianluca Varenni wrote:

> > BUT..is pcap library able to manage safety multi
> > process (or maybe multi thread) calls with the same
> > pcap_t handle in each process ?
>
> No. The pcap_t handle is not guaranteed to be thread-safe.  
> Specifically, every packet returned by pcap_next (or pcap_next_ex)  
> is valid until the next call to pcap_next_ex, pcap_close  (or  
> pcap_loop/dispatch).

He's talking about multiple processes, not multiple threads, so each  
process would have its own pcap_t handle.

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