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How to read pcap files directly using matlab

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Aslihan Reyhanoglu
Aslihan Reyhanoglu el 5 de Mayo de 2020
Comentada: Marek HICAR el 22 de Dic. de 2022
Hi,
I have to extract statistical features like source port, destination port, packet length, total length and round trip time from .pcap files by using Matlab. I tried some widespread ways I found on the Internet (pcap2matlab, traceplay) but I didn't make them work. Is there anyone who has a new suggestion? I will really appreciate your help.
Regards,
Asli

Respuesta aceptada

Samatha Aleti
Samatha Aleti el 8 de Mayo de 2020
Hi Aslihan,
There is no such feature as of now, but it will be considered for a future release. Also, 'pcap2matlab' is one of the submissions in MATLAB File Exchange on MATLAB Central which is a forum for our product users to interact, exchange information and knowledge, without MathWorks' involvement.
Feel free to contact the author of this submission directly for specific questions about the implementation.
  1 comentario
Aslihan Reyhanoglu
Aslihan Reyhanoglu el 8 de Mayo de 2020
Hi Samantha,
Thank you for your answer. I'll contact the author.

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Más respuestas (1)

michael
michael el 20 de Jun. de 2020
To make the pcap2matlab litlle bit simple to use:
capture = pcap2matlab(filter, decodeas_and_dissector, filename_or_interface, capture_stop_criteria)
Lets say you are using a udp protocol and the data you would like to read is on top of it: data[0:1] (in packet showed below is 0x5d 0x2d)
Therfore in order to read a file you shall use:
  • filter=[]; %there is no specific filter
  • decodeas_and_dissector.somedata=base+0:base+1; (where base is the location of the 1st byte of the data (0x2a=42))
  • capture_stop_criteria=[];
Now, lets assume that your data is dissected, like udp.srcport,
Therfore in order to read a file you may use:
  • decodeas_and_dissector = {'udp.srcport'}
other option is like before
  • decodeas_and_dissector.srcport = 34:35 %locations (0x22:0x23)
  9 comentarios
Walter Roberson
Walter Roberson el 29 de Nov. de 2022
You need to install WireShark https://www.wireshark.org/download.html . The pcap2matlab() code invokes an executable named tshark from the wireshark installation.
Marek HICAR
Marek HICAR el 22 de Dic. de 2022
Thanks Walter, I do have WireShark installed before launching the pcap2matlab file.
The file was recordered. Are the input arguments correct? See attached fig.

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