Desktop command line - allow persistent TCP
(Win & macOS & linux)

I use Packet Sender frequently as a simple data-sending widget within scripting platforms & integrated control environments without native socket support.
Occasionally I need to send different chunks of data in one session based on responses, e.g. negotiating PJLink control to remotely operate projectors, or uploading a firmware file after sending a trigger string.

Persistent TCP sessions could possibly be implemented by nature of passing to, or receiving in return, a session identifier token of some kind (as well as timeout parameters etc).

Could sponsor this if it's suitable / possible!