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by numeromancer 876 days ago
He built several utilities for doing what is described here.

https://cr.yp.to/ucspi-tcp.html

These are great for duct-taping connections. I created a whole suite of utilities for another programs for uploading firmware updates. I was able to create one program for handling the uploads with several different comms protocols and devices, without having to handle details of tcp connections, serial connections, UDP, etc. socat is another great tool for this.