Connection class

The Connection class is an asyncio.transport class. Specifically it is either a serial.aio class if the Insteon Modem is a PLM or a aiohttp.trasport class if the Inteon Modem is a Hub. It has the following properties:

• device: The posix path to the PLM USB or serial port.
• host: The host name or IP address of the Hub
• password: The local connection password of the Hub
• port: The IP port number of the Hub
• protocol: An asyncio Protocolclass. This is also the Insteon Modem (i.e. PLM or Hub)
• username: The local connection username of the Hub
• transport: An asyncio Transport. This is either a serial.aio serial transport or a custom insteonplm.HttpTransport.

The `Connection class supports the following methods:

##create

create is a factory method and returns a Connection class. It accepts the following parameters:

• auto_reconnect: Boolean value to tell the Connection class to reconnect if the connection is lost
• device: path to the USB or serial port where the PLM device is attached. The default is '/dev/ttyUSB0'
• host: Host name or IP address of a Hub. If this parameter is set, the module assumes the Insteon Modem is a hub even if the device parameter is set above.
• loop: asyncio loop.
• password: Password of the local Hub connection.
• port: IP port number for the Hub connection. Default is 25105.
• username: Username of the local Hub connection.
• workdir: Working director to store the device information found during startup. If this value is set a file will be saved in this directory called insteon_plm_device_info.dat. This file will be read on subsequent startups to improve startup time.
• poll_devices: Boolean value to tell the Insteon Modem to poll the device status.

##close The close method closes the protocol transport. In other words it closes the serial connection to the PLM or the HTTP session to the Hub.

##halt The halt method closes the protocol transport and prevents reconnecting until a resume call is made.

##resume The resume method allows the protocol.transport to reconnect after a halt command is sent.