ROHC-TCP queries - Context Replication

Hi all,

The section 3.4.3 of RFC 4164, states the following - "In particular,
a decompressor implementation performing strict memory management,
such as deleting context state information when a connection-oriented
flow (e.g., TCP) is known to have terminated, SHOULD send STATIC-NACK
in this case. Otherwise, there is a risk that the compressor will
maintain a specific CID as a potential candidate for a later
replication attempt, while actually there is insufficient state left
in the decompressor for this CID to act as a Base CID."

That is, it states that the decompressor  should send a STATIC NACK on TCP
connection termination. But, how will the decompressor know about TCP
connection termination ? Any ideas ?

Thx in advans,
Karthik Balaguru

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