DOCUMENT:Q250983 13-MAY-2002 [iis] TITLE :Using Netscape Server Push Technology with ASP PRODUCT :Internet Information Server PROD/VER:WINDOWS:5; winnt:4.0,5.0 OPER/SYS: KEYWORDS:kbOSWin2000 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.0 - Microsoft Internet Explorer (Programming) version 5 - Microsoft Internet Information Server version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= The Netscape Web browser implements a proprietary technology known as Server Push to send a type of dynamic page updates to a client. This technology is not supported by Microsoft Internet Explorer. However, you can use Server Push with Microsoft Active Server Pages (ASP), or you can Client Pull as an optional method of displaying dynamic page updates in Internet Explorer. MORE INFORMATION ================ Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site: For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:;EN-US;CNTACTMS Server Push Using ASP: To implement Server Push using ASP, do the following: 1. Save the following code as Push.asp in a folder with at least Script access defined: <% @Language="VBScript" %> <% Option Explicit Dim strBoundary ' change the following string to whatever boundary you wish to use strBoundary = "MSBOB" ' turn off buffering Response.Buffer = False ' set the content type as a multipart document Response.ContentType = "multipart/x-mixed-replace;boundary=" & strBoundary ' create a function to output the boundary Sub WriteBoundary() Response.Write "--" & strBoundary & vbCrLf Response.Write "Content-Type: text/html" & vbCrLf & vbCrLf End Sub ' this is a very unelegant sleep function just to create a short delay Sub Sleep(tmpSeconds) Dim dtmOne,dtmTwo dtmOne = Now() While DateDiff("s",dtmOne,dtmTwo) < tmpSeconds dtmTwo = Now() Wend End Sub %> <% WriteBoundary %>

First Page

<% Sleep 10 WriteBoundary %>

Second Page

<% Sleep 10 WriteBoundary %>

Third Page

2. Browse to the page using the Netscape Web browser. The following behavior should occur: - The first page displays for 10 seconds, and the browser indicates that it is still loading a document. - The second page displays for 10 seconds, and the browser continues to indicate that it is still loading a document. - The third page displays, and the browser indicates that the document loading has completed. For more information on Server Push, Client Pull, and Microsoft's Internet products, please see the following articles: Q159650 - Server Push Animation Not Supported in Internet Explorer Q194083 - FP98: How to Use Client Pull in FrontPage Web Documents Q196471 - FP2000: How to Use Client Pull in FrontPage Web Documents Q240774 - How to Enable Client Pull for Web Servers, Sites, and Folders An Exploration Of Dynamic Documents The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Microsoft in no way guarantees the accuracy of this third-party contact information. The third-party products discussed in this article are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability. Additional query words: ====================================================================== Keywords : kbOSWin2000 Technology : kbiisSearch kbIEsearch kbAudDeveloper kbSDKIESearch kbiis500 kbiis400 kbZNotKeyword kbSDKIE500 Version : WINDOWS:5; winnt:4.0,5.0 Issue type : kbhowto Solution Type : kbpending ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.