How to return your IP address?

[dougie1809]

As far as I know it is not possible with Java, but you can manage them through sockets. Ports availability and all handles by the OS itself usually.

Thanks for the reply. Yes i know, im actually using sockets to connect to ports on the local computer which then determines either TCP or UDP ports are opened. I know how to close the socket connection by using the close() method, but there must be a way to actually tell java to close the port that the socket is connected to. That is what im trying to get around, Ive no idea how to do so.

[Tolls]

Again, it's up to the OS exactly how the port is reclaimed, it may not be instantaneous.
Are you finding ports not being closed when a socket is closed?
Because again that's the OSes job, and it should be fairly quick.

[dougie1809]

Sockets don't open or close ports in general, they just connect to a port number specified by the user. The socket connection can then determine if the port is opened or not. And no, ports do not close when closing a socket. Thanks

[Tolls]

A listening socket requests a port, which the OS supplies (assuming it's not in use).
When it closes I thought it handed that port back to the OS, which would close it at some point.

Happy to be corrected, since it's been a couple of decades(+) since I had to do this stuff in any significant way.