HttpContext.Current.Request.UserHostName is empty when called from a class
- by John Galt
I have various web pages that need to build up a URL to display or place it in an emitted email message. The code I inherited had this value for the name of the webserver in a Public Const in a Public Class called FixedConstants. For example:
Public Const cdServerName As String = "WEBSERVERNAME"
Trying to improve on this, I wrote this:
Public Class UIFunction
Public Shared myhttpcontext As HttpContext
Public Shared Function cdWebServer() As String
Dim s As New StringBuilder("http://")
Dim h As String
h = String.Empty
Try
h = Current.Request.ServerVariables("REMOTE_HOST").ToString()
Catch ex As Exception
Dim m As String
m = ex.Message.ToString() 'Ignore this should-not-occur thingy
End Try
If h = String.Empty Then
h = "SomeWebServer"
End If
s.Append(h)
s.Append("/")
Return s.ToString()
End Function
I've tried different things while debugging such as HttpContext.Current.Request.UserHostName and I always get an empty string which pumps out my default string "SomeWebServer".
I know Request.UserHostName or Request.ServerVariables("REMOTE_HOST") works when invoked from a page but why does this return empty when invoked from a called method of a class file (i.e. UIFunction.vb)?
