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I need to create an Ethernet packet with existing UDP payload. I need to put in the ports / checksum for UDP, IP's/checksum for IP layer etc. Is there any library for that?

Thanks!

outofbounds
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  • Do you mean like this? http://stackoverflow.com/questions/10556829/sending-and-receiving-udp-packets-using-java – Renato Sep 29 '14 at 21:31
  • Not really. That's a simple create / send UDP to a socket. I am using pcap. I have a custom payload, a protocol over UDP. The stack is Ethernet-IP-UDP-something else – outofbounds Sep 30 '14 at 07:30
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    I tried parsing a Wireshark packet (ethernet level) with Jnetpcap. It decodes the ethernet header alright but does not get the IP level details, it returns ipHeader as null. Has anyone tried this before? – outofbounds Sep 30 '14 at 16:09

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