I am looking for a way to remotely control my EA copies. Lets imagine i gave out few EA's to somebody, i want to be able to turn it on and off remotely, (kind of licensing). Selling it via website market is not an option. Main condition is that to be able to control them seperately. Please help...
Perhaps something like here https://www.mql5.com/en/articles/359 5. Remote licenses
But for mql4!
I have been using the start-stop control for my clients, and actually I do not have real problem with using the webrequest. It is a simple command and works well when you are happy with its synchronized behaviour,i.e. your EA stops until the request is returned or expires (may take half a minute sometimes).
On the other hand I have problem with identifying the user's computer, which sent the webrequest. I did not find any reliable method, which would give me a unique identifier of the computer. There are cloned systems on VPS returning the same HW and SW data, Unix and Mac emulators which have often dummy implementation of core Windows data functions.