Hello world through Ethernet Between two different operating systems?

I need to send data back and forth using a server and a client. Something simple to start, just a hello world to the client and a confirmation that the message was received to the server BUT it has to be through an Ethernet cable with one machine using Ubuntu (Linux) and the other on Windows. That is where I'm... show more I need to send data back and forth using a server and a client. Something simple to start, just a hello world to the client and a confirmation that the message was received to the server BUT it has to be through an Ethernet cable with one machine using Ubuntu (Linux) and the other on Windows. That is where I'm stuck. How the heck to I do this?
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