Rather than taking the values from the HttpContext and storing them in one of log4net's context objects, why not log the values directly from the HttpContext? See my answer to the linked question for some techniques that might work for you.
If you go to the bottom of my answer, you will find what might be the best solution. Write an HttpContext value provider object that you can put in log4net's GlobalDiagnosticContext.
For example, you might do something like this (untested)
public class HttpContextValueProvider
{
private string name;
public HttpContextValueProvider(string name)
{
this.name = name.ToLower();
}
public override string ToString()
{
if (HttpContext.Current == null) return "";
var context = HttpContext.Current;
switch (name)
{
case "path":
return context.Request.Path;
case "user"
if (context.User != null && context.User.Identity.IsAuthenticated)
return context.User.Identity.Name;
case "ip":
string ip = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if(string.IsNullOrWhiteSpace(ip))
ip = context.Request.ServerVariables["REMOTE_ADDR"];
return ip;
default:
return context.Items[name];
}
return "";
}
}
In the default
clause I assume the name, if it is not a specifically case that we want to handle, represents a value in the HttpContext.Current.Items
dictionary. You could make it more generic by also adding the ability to access Request.ServerVariables
and/or other HttpContext
information.
You would use this object like so:
Somewhere in your program/web site/service, add some instances of the object to log4net's global dictionary. When log4net resolves the value from the dictionary, it will call ToString
before logging the value.
GDC.Set("path", new HttpContextValueProvider("path"));
GDC.Set("ip", new HttpContextValueProvider("ip"));
Note, you are using log4net's global dictionary, but the objects that you are putting in the dictionary are essentially wrappers around the HttpContext.Current
object, so you will always be getting the information for the current request, even if you are handling simultaneous requests.
Good luck!