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Non-blocking Connections

Non-blocking connections read and write asynchronously, so that the transfer of data does not block the execution of other code in you network application. To create a non-blocking connection for client or server sockets, set the BlockMode property to bmNonBlocking. 

When the connection is non-blocking, reading and writing events inform your socket when the socket on the other end of the connection tries to read or write information.

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