The returned address can be null if the connection hasn't been established
yet, or the resource was loaded from the disk cache. In case of proxy
connections, the remote address returned is a gio.proxy_address.ProxyAddress. If
propertySession:remote-connectable is set the returned address id for the
connection to the session's remote connectable.
Get the remote gio.socket_address.SocketAddress of the connection associated with the message.
The returned address can be null if the connection hasn't been established yet, or the resource was loaded from the disk cache. In case of proxy connections, the remote address returned is a gio.proxy_address.ProxyAddress. If propertySession:remote-connectable is set the returned address id for the connection to the session's remote connectable.