In bind+connect scenario, rejected connection can trigger a read
notification while the socket is opened. But unlike UDP, reading from
the socket engine or emitting a readyRead() signal is not allowed for
the TCP socket in bound or connecting state.
To make a bind+connect scenario work properly, disable the read
notifications until a connection is established.
Task-number: QTBUG-50124
Change-Id: I7b3d015b0f6021fb9ff9f83560478aa5545f41f5
Reviewed-by: Richard J. Moore <rich@kde.org>
6b6955c2ff