Is it normal for a read call back on a socket to be called when there is
no data to be read?
I create CFSocket from a socket and specify a read call back. The socket
transfers some data, but then when there is no data available, the read
call back is still being called.
I am repeatedly call read on the socket, but it always returns 0 bytes.
Is this normal behavior? I believe in some previous situation that the
read call back would only be called when there was actually data available.
Thanks for any info,
...Duane
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