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In reference to this question: What is the background that a java.net.DatagramSocket supports a “connected” state?
I would have expected that the isConnected() method always returns false, since UDP/datagram sockets do not support a connected state. But a quick look at the sources shows that there is some logic behind the isConnected() method. Why?
Read the Javadoc. When you “connect” a
DatagramSocketto a remote IP/port you are just telling the socket not to accept packets to or from any other remote host.