Opened issue https://github.com/appneta/tcpreplay/issues/414
<https://github.com/appneta/tcpreplay/issues/414>
What version are you using?
Fred Klassen
> On Aug 5, 2017, at 6:16 AM, Peter Gallagher <gallagher.pe...@gmail.com> wrote:
>
> Looking further into this and the previous error message could be misleading.
> The code producing this error appears to be called only because I have
> provided the verbose flag. Without the verbose flag the command completes,
> but subsequently when using this cache file with tcprewrite I get the
> following error:
>
> > Fatal Error: Cache data length (256 bytes) doesn't match cache header
> > (1440788 bytes)
>
> It appears that there is some issue generating this cache file and I am
> unclear how to proceed. Any help would be appreciated.
>
> Thank you,
>
> Peter
>
> On 5 August 2017 at 13:54, Peter Gallagher <gallagher.pe...@gmail.com
> <mailto:gallagher.pe...@gmail.com>> wrote:
> I have a couple of pcaps that I am trying to generate a cachefile from, but
> each time I run tcpprep it errors saying:
>
> ```
> $ tcpprep --auto=router --cachefile=example.cache --pcap=example.pcap
> --verbose
>
> reading from file -, link-type EN10MB (Ethernet)
>
> Fatal Error:
> poll() timeout... tcpdump seems to be having a problem keeping up
> Try increasing TCPDUMP_POLL_TIMEOUT
> tcpdump: pcap_loop: truncated dump file; tried to read 37383 captured bytes,
> only got 94
> ```
>
> This is occurring with a number of different pcaps that have been created
> using both tcpdump and wireshark.
>
> Is there any additional troubleshooting I can perform to understand what is
> happening? Is increasing TCPDUMP_POLL_TIMEOUT likely to help? I tried
> exporting this as an environment variable but it appears to have no effect,
> how can this be modified at runtime?
>
> Thanks,
>
> Peter
>
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