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What steps will reproduce the problem?
1. Set timeout_ms to less than 1 second
2. Run a capture on an interface with no traffic
3. Record the timings of the returned calls
This is pypcap 1.1 from svn (revision 102).
I traced the bug to the following line in pcap_ex.c:
#else
static u_char *__pkt;
static struct pcap_pkthdr __hdr;
struct timeval tv = { 1, 0 };
fd_set rfds;
int fd, n;
The timeval struct in the select call is set to 1 second timeout, regardless of
the timeout_ms value passed in. I attached a patch that changes the struct to:
struct timeval tv = { 0, 1000 };
i.e. a timeout of 1 ms. Sub ms timeout probably doesn't make sense anyway.
I think that's the right way to resolve that, unless I missed something.
Original issue reported on code.google.com by timur.al...@gmail.com on 2 Mar 2012 at 9:52
Original issue reported on code.google.com by
timur.al...@gmail.com
on 2 Mar 2012 at 9:52Attachments:
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