Execute Client Function from Server

After looking into WCF, I don't believe it can do what I need it to. What would be t开发者_如何转开发he appropriate way (if I have a server and client application, both C# .NET Console apps) to basically instruct the client to execute functions?

For example, if the client application has functions such as DownloadFTPFile(), CreateWindowsService(), IsServiceRunning(), etc. what would be the standard approach to telling them to execute this from the client?

I was initially just going to have the client interpret messages sent from the server, such as "downloadfile ftp://filename.zip" but I am wondering if there is a better way.

• Client has Agent.
• Agent connects to server, polls for cmomands
• Agend executes comands.

THe server sending is tricky unless you control the environment. NAT for example makes "client sends" a nightmare. You also then open up the client for additional attacks with client polling the clietn firewall does not have tp open external access to the agent.

It is possible.

Use the callback functions along with duplexes in the WCF. You will be limited to the intranet usage or azure though, since only NetTcpBinding and NetTcpRelayBinding support it (WsHttpBinding is deprecated).

With WCF, any client can self-host a WCF service. This can make the client be a service. Add a little extra protocol between the client and the service, and you've got your wish.