Request.ServerVariables Application

This machine ip:<%=request.servervariables
("REMOTE_ADDR")%>
Server name: <%=request.servervariables
("SERVER_NAME")%>
Server Ip:<%=request.servervariables
("Local_addr")%>
Server port: <%=request.servervariables
("Server_port")%>
Server Time:<%=now%>
IIS version: <%=request.servervariables
("Server_software")%>
Script Timeout Time:<%=server.scripttimeout%>
This file path: <%=server.mappath
(Request.ServerVariables ("Script_name"))%>
Number of server CPUs: <%=request.servervariables
("Number_of_processors")%>
Server Interpreter Engine: <%=scriptengine & "/" & scriptenginemajorversion& "." &ScriptEngineMinorVersion& ".
"& ScriptEngineBuildVersion%>
Server operating system: <%=request.servervariables ("OS")%>
Supported File types: <%=request.servervariables ("http_accept")%>
File path to access: <%=request.servervariables ("Http_url")%>
User agent information: <%=request.servervariables ("Http_user_agent")%>
Gets the filename and the value passed in the URL: request. ServerVariables ("Script_name") + "?" +request. ServerVariables ("Query_string")

Where ServerVariables is the server environment variable, the variable contains more content, we also use for loop to traverse the view.
<%for each i in request.servervariables%>
<%=i%>:
<%=request.servervariables (i)%>
<%Next%>

how Request.ServerVariables ("Http_referer") works

The following conditions are normally obtained request.servervariables ("Http_referer") from the address bar of the browser:
1. Direct use of <a href>
2. Forms submitted with Submit or <input type=image> (POST or get)
3. Forms submitted using JScript (POST or get)

Let's take a look at the case where Request.ServerVariables ("Http_referer") is not properly evaluated:
1. Links from Favorites
2. Click ' Home ' or a custom address
3. Use JScript's Location.href or Location.replace ()
4. Enter the address directly in the browser
5.<%response.redirect%>
6.<%response.addheader%> or <meta http-equiv=refresh> steering
7. Load addresses with XML

Obviously, Request.ServerVariables ("Http_referer") is not working properly in most cases.