Request.ServerVariables Environment Server Scalar

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ServerVariables

The ServerVariables collection retrieves the predetermined environment variables.

Grammar

Request.ServerVariables (Server environmentvariable

Parameters

Server environment variables

Specifies the name of the server environment variable to retrieve. You can use the values listed below.

Variable	Description
All_http	All HTTP header files sent by the client.
All_raw	Retrieves all headings in the unhandled table. Unlike All_raw and all_http, all_http places http_ prefix before the title file name, and the title name is always uppercase. When you use All_raw, the title name and value appear only when the client sends it.
Appl_md_path	Retrieves the metabase path of the (WAM) application of the ISAPI DLL.
Appl_physical_path	Retrieves the physical path corresponding to the metabase path. IIS returns a value by converting Appl_md_path to a physical (directory) path.
Auth_password	The value is entered into the authentication dialog for the client. This variable is available only when Basic authentication is used.
Auth_type	This is the authentication method that the server uses to validate users when they access a protected script.
Auth_User	The user name that was not authenticated.
Cert_cookie	The unique ID of the client authentication, returned as a string. A signature that can be verified as an entire client.
Cert_flags	If there is client authentication, then BIT0 is 1. If the verifier of the client authentication is not valid (not in the list of CAs recognized by the server), Bit1 is set to 1.
Cert_issuer	The Issuer field in user authentication (O=ms,ou=ias,cn=user name,c=usa).
Cert_keysize	The number of bits of the Secure Sockets Layer connection keyword, such as 128.
Cert_secretkeysize	The server verifies the number of bits of the private keyword. such as 1024.
Cert_serialnumber	The Serial number field of the user authentication.
Cert_server_issuer	The issuer field of the server validation.
Cert_server_subject	The primary field for server authentication.
Cert_subject	The primary field for client authentication.
Content_length	The length of the content emitted by the client.
Content_Type	The data type of the content. Used with additional information queries, such as HTTP query GET, POST, and PUT.
Gateway_interface	Revision of CGI specifications used by the server. The format is cgi/revision.
http_<headername>	headername The value stored in the header file. Header files that are not listed in the table must be prefixed with HTTP_ so that the ServerVariables collection retrieves its values. Note The server interprets the underscore (_) in headername as a dash in the actual caption. For example, if you specify Http_my_header, the server searches for a header file that is sent in My-header name.
HTTPS	Returns on if the request crosses the secure channel (SSL). Returns off if the request is from a non-secure channel.
Https_keysize	The number of bits of the Secure Sockets Layer connection keyword, such as 128.
Https_secretkeysize	The server verifies the number of bits of the private keyword. such as 1024.
Https_server_issuer	The issuer field of the server validation.
Https_server_subject	The primary field for server authentication.
instance_id	The ID of the text-formatted IIS instance. If the instance ID is 1, it appears as a character. Use this variable to retrieve the ID of the Web server instance (in the metabase) to which the request belongs.
Instance_meta_path	Metabase path of the IIS instance that responds to the request.
Local_addr	Returns the address of the server that accepted the request. This variable is important if the address used for the request is found on a multihomed machine that is bound to multiple IP addresses.
Logon_User	User logs on to Windows NT® account.
Path_info	Additional path information provided by the client. You can use these virtual paths and Path_info server variables to access scripts. If this information comes from a URL, it is decoded by the server before it arrives at the CGI script.
Path_translated	Path_info the converted version, the variable gets the path and makes the necessary virtual-to-physical mapping.
Query_string	Query for information after the question mark (?) in an HTTP request.
Remote_addr	The IP address of the remote host that made the request.
Remote_host	The name of the host that issued the request. If the server does not have this information, it will be set to an empty mote_addr variable.
Remote_user	A string of unmapped user names sent by the user. The name is the name that the user actually sends, as opposed to the name of the validation filter that was modified on the server.
Request_method	This method is used to make a request. Equivalent to, POST, and so on for HTTP.
Script_name	The virtual path of the execution script. The URL to use for self-referencing.
server_name	The server host name, DNS alias, or IP address that appears in the self-referencing UAL.
Server_port	The port number on which the request was sent.
Server_port_secure	A string that contains 0 or 1. If the security port handles the request, it is 1, otherwise 0.
Server_protocol	The name and revision of the request information Agreement. The format is protocol/revision .
Server_software	The name and version of the server software that answers the request and runs the gateway. The format is name/version .
Url	Provides a basic part of the URL.

Comments

If the header file sent by the client is not found in the table above, you can add HTTP_ prefix to the title file name in the call Request.ServerVariables to retrieve its value.

Request.ServerVariables Environment Server Scalar