Extracting the no. of ports in a pcap

[NITIN GOYAL <nitinkumgoyal () gmail com>]

Hi

I have a big pcap which i want to convert into pdml format. This pcap have
multiple sessions on different ports on a combination of Src and Dst. IP.

Like
10.x.x.x [port1]  172.0.0.1 [port y]
10.x.x.x [port2]  172.0.0.1 [port y]
10.x.x.x [port3]  172.0.0.1 [port y]
10.x.x.x [port4]  172.0.0.1 [port y]

Now, is there any way, i can get the numbers of ports and their list before
i start making the pdml for each port. SO, i can call tshark.exe in a
multi-threaded program which call multiple instances of tshark for different
ports and i get multiple pdml files for multiple ports simultaneously.

Guys, can somebody give my any advice for the things explained above.

Thanks
Nitin

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