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<h1>ASP ServerVariables Collection</h1>
<hr />
<a href="asp_ref_request.asp"><img class="navup" src="../images/up.gif" alt="Request Object Reference" border="0" /> Complete Request Object Reference</a>
<hr />
<p>The ServerVariables collection is used to retrieve the server variable values.</p>

<h3>Syntax</h3>

<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3"> 
  <tr>
    <td valign="top">
      <pre>Request.ServerVariables (server_variable)</pre>
    </td>
  </tr>
</table>
<br />
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3"> 
  <tr>
    <th align="left" valign="top" width="20%">Parameter</th>
    <th align="left" valign="top" width="80%">Description</th>
  </tr>  
  <tr>
    <td valign="top">server_variable </td>
    <td valign="top"> Required. The name of the <a href="#sv"> server variable</a> to retrieve
    </td>
  </tr>
</table>

<h3><a name="sv">Server Variables</a></h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3"> 
<tr>
<th valign="top" width="20%" align="left">Variable</th>
<th valign="top" width="80%" align="left">Description</th>
</tr>
<tr>
<td valign="top">ALL_HTTP</td>
<td valign="top"> Returns all HTTP headers sent by the client. Always prefixed
      with HTTP_ and capitalized</td>
</tr>
<tr>
<td valign="top">
      ALL_RAW</td>
<td valign="top"> Returns all headers in raw form</td>
</tr>
<tr>
<td valign="top">
      APPL_MD_PATH</td>
<td valign="top"> Returns the meta base path for the application for the ISAPI
  DLL</td>
</tr>
<tr>
<td valign="top">
      APPL_PHYSICAL_PATH</td>
<td valign="top"> Returns the physical path corresponding to the meta
      base path</td>
</tr>
<tr>
<td valign="top">
      AUTH_PASSWORD</td>
<td valign="top">Returns the value entered in the client's authentication dialog</td>
</tr>
<tr>
<td valign="top">
      AUTH_TYPE</td>
<td valign="top"> The authentication method that the server uses to validate users</td>
</tr>
<tr>
<td valign="top">
      AUTH_USER</td>
<td valign="top">Returns the raw authenticated user name</td>
</tr>
<tr>
<td valign="top">
      CERT_COOKIE</td>
<td valign="top">Returns the unique ID for client certificate as a string</td>
</tr>
<tr>
<td valign="top">
      CERT_FLAGS</td>
<td valign="top"> bit0 is set to 1 if the client certificate is present and bit1 is set to 1 if the cCertification authority of the client certificate is
  not valid</td>
</tr>
<tr>
<td valign="top">
      CERT_ISSUER</td>
<td valign="top">Returns the issuer field of the client certificate</td>
</tr>
<tr>
<td valign="top">
      CERT_KEYSIZE</td>
<td valign="top">Returns the number of bits in Secure Sockets Layer connection key
  size</td>
</tr>
<tr>
<td valign="top">
      CERT_SECRETKEYSIZE</td>
<td valign="top">Returns the number of bits in server certificate private key</td>
</tr>
<tr>
<td valign="top">
      CERT_SERIALNUMBER</td>
<td valign="top">Returns the serial number field of the client certificate</td>
</tr>
<tr>
<td valign="top">
      CERT_SERVER_ISSUER</td>
<td valign="top">Returns the issuer field of the server certificate</td>
</tr>
<tr>
<td valign="top">
      CERT_SERVER_SUBJECT</td>
<td valign="top">Returns the subject field of the server certificate</td>
</tr>
<tr>
<td valign="top">
      CERT_SUBJECT</td>
<td valign="top">Returns the subject field of the client certificate</td>
</tr>
<tr>
<td valign="top">
      CONTENT_LENGTH</td>
<td valign="top">Returns the length of the content as sent by the client</td>
</tr>
<tr>
<td valign="top">
      CONTENT_TYPE</td>
<td valign="top">Returns the data type of the content</td>
</tr>
<tr>
<td valign="top">
      GATEWAY_INTERFACE</td>
<td valign="top">Returns the revision of the CGI specification used by the
  server</td>
</tr>
<tr>
<td valign="top">
      HTTP_&lt;<i>HeaderName</i>&gt;</td>
<td valign="top">Returns the value stored in the header <i> HeaderName</i></td>
</tr>
<tr>
<td valign="top">
      HTTP_ACCEPT</td>
<td valign="top"> Returns the value of the Accept header</td>
</tr>
<tr>
<td valign="top">
      HTTP_ACCEPT_LANGUAGE</td>
<td valign="top"> Returns a string describing the language to use for displaying
  content</td>
</tr>
<tr>
<td valign="top">
      HTTP_COOKIE</td>
<td valign="top"> Returns the cookie string included with the request</td>
</tr>
<tr>
<td valign="top">
      HTTP_REFERER</td>
<td valign="top"> Returns a string containing the URL of the page that referred 
the request to the current page using an &lt;a&gt; tag. If the page is redirected, 
HTTP_REFERER is empty</td>
</tr>
<tr>
<td valign="top">
      HTTP_USER_AGENT</td>
<td valign="top"> Returns a string describing the browser that sent the request</td>
</tr>
<tr>
<td valign="top">
      HTTPS</td>
<td valign="top"> Returns ON if the request came in through secure channel or OFF if the request
  came in through a non-secure channel</td>
</tr>
<tr>
<td valign="top">
      HTTPS_KEYSIZE</td>
<td valign="top"> Returns the number of bits in Secure Sockets Layer connection key
  size</td>
</tr>
<tr>
<td valign="top">
      HTTPS_SECRETKEYSIZE</td>
<td valign="top"> Returns the number of bits in server certificate private key</td>
</tr>
<tr>
<td valign="top">
      HTTPS_SERVER_ISSUER</td>
<td valign="top"> Returns the issuer field of the server certificate</td>
</tr>
<tr>
<td valign="top">
      HTTPS_SERVER_SUBJECT</td>
<td valign="top"> Returns the subject field of the server certificate</td>
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