FIX: An additional line appears at the start of the message body when you build MFC ISAPI extensions in Visual Studio .NET 2003

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Article ID: 903075 - View products that this article applies to.
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SYMPTOMS

When you build Microsoft Foundation Classes (MFC) ISAPI extensions in Microsoft Visual Studio .NET 2003, an additional line appears at the start of the message body.

Note In a valid HTTP response message, each HTTP header is delimited by "\r\n". The "\r\n" delimiter inserts one new line. The last header is delimited by "\r\n\r\n". The "\r\n\r\n" delimiter inserts two new lines.

CAUSE

This problem occurs because the MFC ISAPI extensions use the WriteClient function to delimit the headers. When you use the WriteClient function, MFC sends another carriage-return line-feed (CRLF) character to delimit the headers from the HTTP message body. This CRLF character causes an additional line to appear at the start of the message body.

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Visual Studio .NET 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

You must have Visual Studio .NET 2003 installed before you apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

Hotfix file information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version      Size       File name
   --------------------------------------------------------
   29-Jun-2005  03:22  7.10.5011.0     89,088  Atl71.dll     
   29-Jun-2005  03:57  7.10.5011.0  2,187,264  Mfc70d.dll    
   29-Jun-2005  03:58  7.10.5011.0  1,056,768  Mfc71.dl
   29-Jun-2005  04:03  7.10.5011.0     40,960  Mfc71chs.dll  
   29-Jun-2005  04:03  7.10.5011.0     45,056  Mfc71cht.dll  
   29-Jun-2005  04:03  7.10.5011.0     65,536  Mfc71deu.dll  
   29-Jun-2005  04:03  7.10.5011.0     57,344  Mfc71enu.dll  
   29-Jun-2005  04:03  7.10.5011.0     61,440  Mfc71esp.dll  
   29-Jun-2005  04:03  7.10.5011.0     61,440  Mfc71fra.dll  
   29-Jun-2005  04:03  7.10.5011.0     61,440  Mfc71ita.dll  
   29-Jun-2005  04:03  7.10.5011.0     49,152  Mfc71jpn.dll  
   29-Jun-2005  04:03  7.10.5011.0     49,152  Mfc71kor.dll  
   29-Jun-2005  04:16  7.10.5011.0  1,049,600  Mfc71u.dll    
   29-Jun-2005  03:59  7.10.5011.0  2,182,144  Mfc71ud.dll   

WORKAROUND

To work around this problem, use the ServerSupport function instead of the WriteClient function. The ServerSupport function is available in the Microsoft Internet Information Services (IIS) software development kit (SDK). The IIS SDK is part of the Microsoft Windows Server 2003 SP1 SDK. For more information, visit the following Microsoft Web site:
http://www.microsoft.com/downloads/details.aspx?familyid=eba0128f-a770-45f1-86f3-7ab010b398a3

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 903075 - Last Review: October 9, 2011 - Revision: 4.0
APPLIES TO
  • Microsoft Visual Studio .NET 2003 Professional Edition
  • Microsoft Visual Studio .NET 2003 Academic Edition
  • Microsoft Visual Studio .NET 2003 Enterprise Architect
  • Microsoft Visual Studio .NET 2003 Enterprise Developer
Keywords: 
kbqfe kbfix kbbug kbhotfixserver KB903075

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