Reliable Web Client-Server comunication Layer

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C#

WCF

Hi All,

I need to implement a very reliable web Cliente-Server communication layer. The client and the server are need to be syncroniced all the time. I'm very lost on how to implement this.

An example of what I need is:

Client: Check this field (ID345)
Server: I have just checked the field, here is the answer.
Client: Thank you, I have it.
Server: I have just marked the petition as processed.

Client: Check this field (ID345)
Server: I had jet done. Don't ask me again this petition.

===================

If there are a communication problem:

Client: Check this field (ID346)
Server: ........
Client: Check this field (ID346)
Server: ........
Client: Check this field (ID346)
Server: ........
Client: Check this field (ID346)
Server: I have just checked the field, here is the answer.
Client: ....
Client: Check this field (ID346)
Server: I had done. Don't ask me again this petition.
Client: Thank you. I have it.


I don't know what technology is the best to do this. The application is a C# .NET MVC3.

It would be a good idea user WCF or the are simpler alternatives?

Thank you very much.