Naturally, BeginReceive() will never end if there\'s no data.
MSDN suggests that calling Close() would abort BeginReceive().
For TCP socket connections, you can use the Connected property to determine the state of the socket before trying to access any disposed methods. Per MSDN:
"The Connected property gets the connection state of the Socket as of the last I/O operation. When it returns false, the Socket was either never connected, or is no longer connected."
Since it says "no longer connected" it implies that a Close() was previously called on the socket. If you check whether the socket is Connected at the start of the receive callback, there will be no exception.