Packet structure

04/06/2017 19:16 konserwa#1
Hello fellows.

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I try to figure out what is this part o packet. Maybe something with size of packet?
05/17/2017 15:07 ivrk#2
it's a time-stamp, including milliseconds. In return, could you enlighten me about the following parts?
05/18/2017 18:02 konserwa#3
If its timestamp so what is CA 00000040?
05/19/2017 08:53 ivrk#4
It, too, looks like it's a time-stamp but without milliseconds.
I've only been inspecting packets to the higher port, related to chat/log.
I assume these are packets to the lower port, is that correct?