Question

Is the code below sufficient to accept concurrent UDP transmissions? More specifically, if 2 clients transmit concurrently, will DatagramSocket queue up the transmissions and deliver them one by one as I call receive(), or will only one make it through?

DatagramSocket socket = new DatagramSocket(port, address);
byte[] buffer = new byte[8192];

while(!disconnect){

    DatagramPacket p = new DatagramPacket(buffer, buffer.length);
    socket.receive(p);
}

Answer 1

There is no queuing by default. The client may retry till timeout or similiar are reach.
UDP is quiet fast but on heavy load you may have clients that cannot connect.