Smartphone Client Server

I’m trying to develop a client server application where my smartphone is t
he
client and my home PC is the server. I know this topic has been discussed
before but I can’t find out the best way. Remoting is out of the question
because CF does not support remoting. I have tried to use socket. It works
fine as long as I’m in a local network, but I’m not able to make it work
 if
I’m outside, like if I’m connected through activesync at work. (Yes, I h
ave
opened the necessary ports in my router at home and there are no port
restrictions at work). I have also found an example to host webservices in a
windows app. That works fine but the limitation is that it’s only a “one
 way
communication”, i.e. I have to poll the webservice every now and then to s
ee
if something has happend.
So the question is. Is it possible to make sockets work if I’m outside my
local network at home? If so, could anyone please provide me with a working
example?

You could use WebRequest / WebResponse to communicate over HTTP.
However there is an overhead and you have to run a web server on the PC.