ConnectEx and SO_UPDATE_CONNECT_CONTEXT

In the doc for ConnectEx it says, " When the ConnectEx function returns, the
socket s is in the default state for a connected socket. The socket s does
not enable previously set properties or options until
SO_UPDATE_CONNECT_CONTEXT is set on the socket. Use the setsockopt function
to set the SO_UPDATE_CONNECT_CONTEXT option."
Yet in the doc for setsockopt it says," Updates the accepting socket with
the context of the listening socket. "

My question is: What am I updating a connected socket to? There is no
listening socket to pass in as a value to setsockopt. Accepted sockets have
listeners, not connecting ones. Is this call necesarry in the case of a
connected socket?

Thanx!




.

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