This copy contains all the decoded data, not just the raw bytes, which is what makes it so great.

Select the first packet/frame you’re interested in (or even just the section), expand the subkeys, right click, copy “All Visible items”. Turns out yo ucan copy the values including decoding from within Wireshark, which means you can then just paste the contents into a diff tool (I’m using the fabulous Meld on Linux, but any diff tool will do including diff itself) and off you go, side-by-side comparison. In the end I stumbled across something even better to compare frames from packet captures side by side, with the decoding intact! The data I was working with was ASN.1 encoded so I couldn’t export as text like you can with HTTP or SIP based protocols and compare it that way. So I started looking for something to diff PCAPs easily.

Today’s problem involved a side by side comparison between a pcap of a known good call, and one which is failing, so I just had to compare the two, which is slow and fairly error-prone, Give me a packet capture of the problem occurring and a standards document against which to compare it, and I shall debug the networking world.Īnd if you’re like me, there’s a good chance when things are really not going your way, you roll up your sleeves, break out Wireshark and the standards docs and begin the painstaking process of trying to work out what’s not right. and this is what I m using now, because tshark is so slow in spliting.Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Using pcapfix I can fix the corrupt packets then SplitCap never crashes again. SplitCap is super fast but when there is an error in some packet it crashes, while tshark only inform you about the error but continue : tshark: The file 'cap.pcap' appears to have been cut short in the middle of a packet.Īnd finally there is PcapSplitter which is super fast too but it need the winpcap driver, it doesn't work with the npcap driver in windows. This solution with tshark is so slow but sure. Tr -d ' ' is for windows users, because tshark in windows output CR LF. The filename will be like that: stream number_time_source IP_port_destination IP_port.pcap Inspired by here is a bash version: file=cap.pcap

Wireshark pcap problem