It was the first week, of course a lot of new things appeared. Uffa, almost late the firt manual programatical connection establishment and finalization was done.

*Write a durty functional prototype which does a three-way handshake. *Elicit which tcp structures(tcb, in/out/time control) was used to accomplish. *Make a summary, submit the sources, feedback, control tasks

*All above

*I spent a lot of time because I misunderstood tcpdump's dump, then as a result I was sending an acknowledgment without sequence number. In this case FreeBSD always answer with an Reset, aborting the connection. *Only when I finished completely the code, that I obtained the complete understanding of how it works. *I saw, only when we look at the code, particularly of a familiarly language we really got the true knowlegment.

*Re-write the previous prototype, using the controlling structures of TCP. *Make a summary, submit the sources, feedback, control tasks. *[Tentatively] implement some set of tcp options negotiation scripts.

*The latest pcs version don't work in my environment, yet! :|

*sequence and ack_number header fields must always be filled. (except in the first packet of an active open, that the ack_number is zero)

*Andre Oppermann cleared sequence and a sort of others issues. Thank you :)