1.Does the device do a http post on port 80 and send its data packet to a web server when its configured to use "HTTP Client” connection type ?
Yes. but the port is configurable
2.Can the target port be changed from 8080 to ssl 443 port
You can change it to 8080. But SSL is not supported yet
3.If a custom built socket server is required to listen on port 8080.
WebSocket is supported. Not socket server