CAsyncSocket - Connected or not?

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Hello,

I starting to do my first Client/Server application. We are using TCP/IP.
I'm doing the Client, The server already exists. I'm programming in VC++
2005 MFC using CAsyncSocket.

In the specification is says that the client will connect to the Server and
then both server and client may start a transaction. there may only be one
transaction alive at the time.

I'm a bit confused about how I now if the connection is alive or not. I
know that one of the test that will be done is to remove the network cable
and after 5-10 minutes attach it again and now the connection has to be
continued.

Will the connection be aborted by removing the network cable?
Can I test if the connection is alive or not?

// Anders
--
English is not my first, or second, language
so anything strange, or insulting, is due to
the translation.
Please correct me so I may improve my English!
.

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