发送和接收相同类别的UDP数据包

Question

I know that this is poor practice, but would it be possible to do the following?

Send packet1 to UDP port 1
port 1 receives packet1 and sends it to port 2
port 2 receives packet2 and sends it to port 3

I don't see how i could set this up, as port 2 and port 3 would already have to be listening, waiting in a while (true) loop.

Answer 1

port 2 and port 3 would already have to be listening

Correct

waiting in a while (true) loop.

Incorrect. You would have had to create the DatagramSockets , but you don't currently have to be receiving them when you send to their ports.

However it is certainly best to do so. There's nothing stopping you starting separate receiving threads for all three ports, is there?