[e2e] tcp retransmission packet size.

[Tianbo Kuang]

Hi,

I noticed in a captured trace that a TCP sender actually retransmitted a
bigger packet than the orignal one (after the ACK was dropped in the
network). My question is,
(1) Is this allowed by specification?
(2) If so, that means that a TCP receiver will always have to use the
duplicated packet as the useful data as it contains more information. Is
that true in the implementation?

Thanks,

--Tianbo