A list of Request Objects (server variables)

Fernando Finelli

Rate me:

2.33/5 (19 votes)

25 Apr 20025 min read

176.9K

A list of server environment variables

Introduction

This is a list of server environment variables

Usage

VBScript

<% Request.ServerVariables("HTTP_SomeNewHeader") %>

Listing

Variable	Description
`ALL_HTTP`	All HTTP headers sent by the client.
`ALL_RAW`	Retrieves all headers in raw form. The difference between `ALL_RAW` and `ALL_HTTP` is that `ALL_HTTP` places an HTTP_ prefix before the header name and the header name is always capitalized. In `ALL_RAW` the header name and values appear as they are sent by the client.
`APPL_MD_PATH`	Retrieves the metabase path for the Application for the ISAPI DLL.
`APPL_PHYSICAL_PATH`	Retrieves the physical path corresponding to the metabase path. IIS converts the `APPL_MD_PATH` to the physical (directory) path to return this value.
`AUTH_PASSWORD`	The value entered in the client's authentication dialog. This variable is available only if Basic authentication is used.
`AUTH_TYPE`	The authentication method that the server uses to validate users when they attempt to access a protected script.
`AUTH_USER`	The name of the user as it is derived from the authorization header sent by the client, before the user name is mapped to a Windows account. This variable is no different from `REMOTE_USER`. If you have an authentication filter installed on your Web server that maps incoming users to accounts, use `LOGON_USER` to view the mapped user name.
`CERT_COOKIE`	Unique ID for client certificate, returned as a string. Can be used as a signature for the whole client certificate.
`CERT_FLAGS`	bit0 is set to 1 if the client certificate is present. bit1 is set to 1 if the cCertification authority of the client certificate is invalid (it is not in the list of recognized CAs on the server).
`CERT_ISSUER`	Issuer field of the client certificate (O=MS, OU=IAS, CN=user name, C=USA).
`CERT_KEYSIZE`	Number of bits in Secure Sockets Layer connection key size. For example, 128.
`CERT_SECRETKEYSIZE`	Number of bits in server certificate private key. For example, 1024.
`CERT_SERIALNUMBER`	Serial number field of the client certificate.
`CERT_SERVER_ISSUER`	Issuer field of the server certificate.
`CERT_SERVER_SUBJECT`	Subject field of the server certificate.
`CERT_SUBJECT`	Subject field of the client certificate.
`CONTENT_LENGTH`	The length of the content as given by the client.
`CONTENT_TYPE`	The data type of the content. Used with queries that have attached information, such as the HTTP queries GET, POST, and PUT.
`GATEWAY_INTERFACE`	The revision of the CGI specification used by the server. The format is CGI/revision.
`HTTP_<HeaderName>`	The value stored in the header `HeaderName`. Any header other than those listed in this table must be prefixed by HTTP_ in order for the `ServerVariables` collection to retrieve its value. Note The server interprets any underscore (_) characters in `HeaderName` as dashes in the actual header. For example if you specify `HTTP_MY_HEADER`, the server searches for a header sent as MY-HEADER.
`HTTP_ACCEPT`	Returns the value of the Accept header.
`HTTP_ACCEPT_LANGUAGE`	Returns a string describing the language to use for displaying content.
`HTTP_COOKIE`	Returns the cookie string that was included with the request.
`HTTP_HOST`	Returns the name of the Web server. This may or may not be the same as `SERVER_NAME` depending on type of name resolution you are using on your Web server (IP address, host header).
`HTTP_REFERER`	Returns a string that contains the URL of the page that referred the request to the current page using an HTML <A> tag. Note that the URL is the one that the user typed into the browser address bar, which may not include the name of a default document. If the page is redirected, `HTTP_REFERER` is empty. `HTTP_REFERER` is not a mandatory member of the HTTP specification.
`HTTP_USER_AGENT`	Returns a string describing the browser that sent the request.
`HTTPS`	Returns ON if the request came in through secure channel (SSL) or it returns OFF if the request is for a non-secure channel.
`HTTPS_KEYSIZE`	Number of bits in Secure Sockets Layer connection key size. For example, 128.
`HTTPS_SECRETKEYSIZE`	Number of bits in server certificate private key. For example, 1024.
`HTTPS_SERVER_ISSUER`	Issuer field of the server certificate.
`HTTPS_SERVER_SUBJECT`	Subject field of the server certificate.
`INSTANCE_ID`	The ID for the IIS instance in textual format. If the instance ID is 1, it appears as a string. You can use this variable to retrieve the ID of the Web-server instance (in the metabase) to which the request belongs.
`INSTANCE_META_PATH`	The metabase path for the instance of IIS that responds to the request.
`LOCAL_ADDR`	Returns the Server Address on which the request came in. This is important on multi-homed computers where there can be multiple IP addresses bound to the computer and you want to find out which address the request used.
`LOGON_USER`	The Windows account that the user is impersonating while connected to your Web server. Use `REMOTE_USER` or `AUTH_US<CODE>E`R to view the raw user name that is contained in the request header. The only time `LOGON_USER` holds a different value than these other variables is if you have an authentication filter installed.
`PATH_INFO`	Extra path information as given by the client. You can access scripts by using their virtual path and the `PATH_INFO` server variable. If this information comes from a URL, it is decoded by the server before it is passed to the CGI script.
`PATH_TRANSLATED`	A translated version of `PATH_INFO` that takes the path and performs any necessary virtual-to-physical mapping.
`QUERY_STRING`	Query information stored in the string following the question mark (?) in the HTTP request.
`REMOTE_ADDR`	The IP address of the remote host making the request.
`REMOTE_HOST`	The name of the host making the request. If the server does not have this information, it will set `REMOTE_ADDR` and leave this empty.
`REMOTE_USER`	The name of the user as it is derived from the authorization header sent by the client, before the user name is mapped to a Windows account. If you have an authentication filter installed on your Web server that maps incoming users to accounts, use `LOGON_USER` to view the mapped user name.
`REQUEST_METHOD`	The method used to make the request. For HTTP, this is GET, HEAD, POST, and so on.
`SCRIPT_NAME`	A virtual path to the script being executed. This is used for self-referencing URLs.
`SERVER_NAME`	The server's host name, DNS alias, or IP address as it would appear in self-referencing URLs.
`SERVER_PORT`	The port number to which the request was sent.
`SERVER_PORT_SECURE`	A string that contains either 0 or 1. If the request is being handled on the secure port, then this will be 1. Otherwise, it will be 0.
`SERVER_PROTOCOL`	The name and revision of the request information protocol. 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`	Gives the base portion of the URL.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

Written By

Fernando Finelli

Web Developer

Argentina

Lic. Fernando Finelli

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

A list of Request Objects (server variables)

Introduction

Usage

Listing

License

Comments and Discussions