Opening TCP dump files using pcap libraries












0















I want to read through a tcp dump file and print out the packet lengths and their start and end time or just time stamps. I know that pcap libraries can do this. But I could not find a concrete example of opening a dump file and processing it for that information. I am okay with any languages and platform.










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  • do you want to write wireshark-like program ( wireshark.org ) ?

    – PiotrNycz
    Nov 21 '12 at 23:22











  • hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

    – P basak
    Nov 23 '12 at 0:23
















0















I want to read through a tcp dump file and print out the packet lengths and their start and end time or just time stamps. I know that pcap libraries can do this. But I could not find a concrete example of opening a dump file and processing it for that information. I am okay with any languages and platform.










share|improve this question

























  • do you want to write wireshark-like program ( wireshark.org ) ?

    – PiotrNycz
    Nov 21 '12 at 23:22











  • hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

    – P basak
    Nov 23 '12 at 0:23














0












0








0








I want to read through a tcp dump file and print out the packet lengths and their start and end time or just time stamps. I know that pcap libraries can do this. But I could not find a concrete example of opening a dump file and processing it for that information. I am okay with any languages and platform.










share|improve this question
















I want to read through a tcp dump file and print out the packet lengths and their start and end time or just time stamps. I know that pcap libraries can do this. But I could not find a concrete example of opening a dump file and processing it for that information. I am okay with any languages and platform.







java c++ network-programming pcap tcpdump






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edited Jan 2 at 3:39









Cœur

19k9112154




19k9112154










asked Nov 21 '12 at 22:21









P basakP basak

2,211102948




2,211102948













  • do you want to write wireshark-like program ( wireshark.org ) ?

    – PiotrNycz
    Nov 21 '12 at 23:22











  • hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

    – P basak
    Nov 23 '12 at 0:23



















  • do you want to write wireshark-like program ( wireshark.org ) ?

    – PiotrNycz
    Nov 21 '12 at 23:22











  • hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

    – P basak
    Nov 23 '12 at 0:23

















do you want to write wireshark-like program ( wireshark.org ) ?

– PiotrNycz
Nov 21 '12 at 23:22





do you want to write wireshark-like program ( wireshark.org ) ?

– PiotrNycz
Nov 21 '12 at 23:22













hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

– P basak
Nov 23 '12 at 0:23





hi if wireshark can give me what I want I dont need to write a program, I just want the packet size and timestamp.

– P basak
Nov 23 '12 at 0:23












1 Answer
1






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oldest

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0














You want pcap_open_offline(). There's a man page for it, and here's an example of using it.






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  • Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

    – user862787
    Nov 22 '12 at 18:45











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














You want pcap_open_offline(). There's a man page for it, and here's an example of using it.






share|improve this answer
























  • Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

    – user862787
    Nov 22 '12 at 18:45
















0














You want pcap_open_offline(). There's a man page for it, and here's an example of using it.






share|improve this answer
























  • Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

    – user862787
    Nov 22 '12 at 18:45














0












0








0







You want pcap_open_offline(). There's a man page for it, and here's an example of using it.






share|improve this answer













You want pcap_open_offline(). There's a man page for it, and here's an example of using it.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 22 '12 at 0:02









whammawhamma

5,49311018




5,49311018













  • Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

    – user862787
    Nov 22 '12 at 18:45



















  • Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

    – user862787
    Nov 22 '12 at 18:45

















Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

– user862787
Nov 22 '12 at 18:45





Note that the example program is assuming that the file is an Ethernet capture (without bothering to check whether it is) and that there are neither IP or TCP options (i.e., neither the IP nor TCP header is guaranteed to be exactly 20 bytes long).

– user862787
Nov 22 '12 at 18:45




















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