Module org.jnetpcap
Package org.jnetpcap

Interface PcapStat

All Known Subinterfaces:
PcapStatEx
public sealed interface PcapStat permits PcapStatEx (not exhaustive)
Packet statistics from the start of the pcap run to the time of the call.

A struct pcap_stat has the following members:

ps_recv
number of packets received;
ps_drop
number of packets dropped because there was no room in the operating system's buffer when they arrived, because packets weren't being read fast enough;
ps_ifdrop
number of packets dropped by the network interface or its driver.

The statistics do not behave the same way on all platforms. ps_recv might count packets whether they passed any filter set with pcap_setfilter(3PCAP) or not, or it might count only packets that pass the filter. It also might, or might not, count packets dropped because there was no room in the operating system's buffer when they arrived. ps_drop is not available on all platforms; it is zero on platforms where it's not available. If packet filtering is done in libpcap, rather than in the operating system, it would count packets that don't pass the filter. Both ps_recv and ps_drop might, or might not, count packets not yet read from the operating system and thus not yet seen by the application. ps_ifdrop might, or might not, be implemented; if it's zero, that might mean that no packets were dropped by the interface, or it might mean that the statistic is unavailable, so it should not be treated as an indication that the interface did not drop any packets.

Author:
Sly Technologies Inc, repos@slytechs.com, mark

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    capt()
    Capt.
    long
    drop()
    number of packets dropped because there was no room in the operating system's buffer when they arrived, because packets weren't being read fast enough.
    long
    ifdrop()
    number of packets dropped by the network interface or its driver.
    long
    netdrop()
    Netdrop.
    long
    recv()
    number of packets received.
    long
    sent()
    Sent.

  • Method Details

    • capt

      long capt()
      Capt.
      Returns:
      the long

    • drop

      long drop()
      number of packets dropped because there was no room in the operating system's buffer when they arrived, because packets weren't being read fast enough.
      Returns:
      the long

    • ifdrop

      long ifdrop()
      number of packets dropped by the network interface or its driver.
      Returns:
      the long

    • netdrop

      long netdrop()
      Netdrop.
      Returns:
      the long

    • recv

      long recv()
      number of packets received.
      Returns:
      the long

    • sent

      long sent()
      Sent.
      Returns:
      the long