[lwip-devel] pcb->lbb = ISS - 1?

[narke]

Hi,

I found the first segment (SYN) sent from a connection has a seqno of
tcp_next_iss() - 1, and this is because the segment was created with a
seqno equals with pcb-lbb, which was assigned with tcp_next_iss() in
the tcp_connect() function.  Why is this '- 1' operation is necessary?

Thanks in advance.

-- 
Life is the only flaw in an otherwise perfect nonexistence
    -- Schopenhauer

narke
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