Just starting to look into WCF and came across the
WSDualHttpBinding binding.
I have used .Net remoting in the past, but it was not possible to have callbacks to occur when the client was behind a router.
Callbacks only worked when 2 applications were running on a LAN.
As explained by this article.
http://blogs.msdn.com/manishg/archive/2004/10/16/243414.aspx
It mentions
“If your client application is running behind a router (as in the case of most home networking setups), there is no way for the server to dispatch events to the client”
Does WCF find a way of rectifying this, I understand the binding TCP supports callbacks only works on a LAN? Am I right? It would good to have callbacks work across the Internet and was just wondering if this was possible?
Not yet. The new relay bindings in WCF 4.0 rectify this for real, but the dual bindings are just a way to define server to client callbacks in a single contract.