Sending packets to 255.255.255.255 by Java DatagramSocket fails

Question

I\'m programming a networking program in java , and I want to send some Packets to 255.255.255.255, but it fails , even when I send them to 192.168.1.255, which according to

Answer 1

While using broadcasting you need to enable it

socket.setBroadcast(true);

Another thing is that you have to make sure that your router is configured right if the two computers are in two different nets. Broadcasts are usually by default not routed. Further if you have a router having a wirless interface and a wired interface these broadcasts may not work either if broadcasts are not enabled(There may be hardware which forward broadcasts between those two interfaces by default).