Communication layer between client and server

Question

I'd like to know if there is any technology to control communications between the client and the server in a web application (ASP.NET)

Example:

• Number of requests
• Check that no repeat a request
• Check that an operation was performed

WorkFlow

1. The client sends the request "A"
2. The server receives the request "A", and responds
3. The server marks the request "A" as answered
4. The client resends the request "A"
5. The server answers that the request "A" was answered

Answer 1

You could intercept the request in the following method, in the Global.asax file:

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
        var request = ((System.Web.HttpApplication)(sender)).Context.Request;
        //here you can evaluate and take decisions about the request
    }