I’ve managed to connect locally to Sofar inverter through TCP connection on port 8899 of the LSW logger (wifi dongle for sofar). It works of the v5 protocol of the wifi dongle (all dongles which serial numbers starts with 17xxx may work).
See [new binding] Logger LSW for Sofar/Omnik/IE for SolarmanPV based on protocol v5 (iGEN tech)