Retrieving Environment Variables and HTTP Headers in ASP

Server environment variables are retrieved using the command shown below.

result = Request.ServerVariables("<variable-name>");

• SCRIPT_NAME - URL of the current page
• CONTENT_LENGTH - the length of content posted using the POST method
• ALL_RAW - show all HTTP headers
  • HTTP_<HeaderName> - retrieve individual HTTP header names
• HTTP_USER_AGENT - retrieves the browser name
• HTTP_ACCEPT_LANGUAGE - the preferred language and country, multiples can be separated by commas
• HTTP_REFERER - the web page which called the current document
• REMOTE_ADDR - this reads the clients IP Address

Multiple domains can be accessed what on what can effectively be called a Virtual Server.