How to modify servervariables?

[Sanjib Biswas]

Hi,

I have an ASP.Net application which talks to an ASP application. As the
ASP.Net application talk to the ASP application, the REMOTE_ADDR server
variable points to the IP address of the ASP.Net application. I would like
to modify server variables to point to the actual client IP address rather
than ASP.Net application.

Client -ASP.Net (Web application) -ASP (Web application)

Request.ServerVariables["REMOTE_ADDR"] = clientIP;

Above code is throwing an exception.

[PlatformNotSupportedException: Operation is not supported on this
platform.]
System.Web.HttpServerVarsCollection.Set(String name, String value)
+3254625
System.Collections.Specialized.NameValueCollection .set_Item(String name,
String value) +9

I have also tried

Request.ServerVariables.Remove("remote_addr");
Request.ServerVariables.Add("REMOTE_ADDR", clientIP);

This code throws "Cannot directly modify server variables". Any idea how to
tackle this problem?

Thanks,
Sanjib