ThingWorx WebSocket-based Edge MicroServer (WS EMS) and Lua Script Resource (LSR) > REST Web Services Supported by WS EMS > HasEdgeThing
The HasEdgeThing service checks whether a certain thing is connected to the WS EMS.
You can pass in raw JSON or an infotable that contains the name of the thing whose connection you want to check:
TW_INFOTABLE, that contains the name of the thing to check. The infotable can be passed in as raw json. For example, {"name":"ThingName"}
TW_INFOTABLE, which contains the result, as TW_BOOLEAN. Returns true if the specified thing is connected, false otherwise.
Here is an example of a REST call that determines if a specified edge thing is connected to a WS EMS: