Article ID: 828663
Article Last Modified on 10/26/2005
APPLIES TO
- Microsoft Host Integration Server 2000 Standard Edition
- Microsoft Host Integration Server 2000 Service Pack 1
SYMPTOMS
COM Transaction Integrator (COMTI) string parameters may be truncated at the first Null character.
Specifically, when COMTI string delimitation is set to Null terminated, if the host returns string data that contains embedded Null characters, the string is truncated at the first Null character.
In Microsoft SNA Server 4.0, strings with embedded Null characters were returned to the calling program without being truncated. However, if you upgrade SNA Server 4.0 to Host Integration Server 2000, a calling application that was created with SNA Server 4.0 may experience a loss of data being returned to the calling application.
RESOLUTION
Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Host Integration Server 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
328152 How to obtain the latest service pack for Host Integration Server 2000
Hotfix information
The English version of this hotfix has the file attributes (or later) 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 ------------------------------------------------------------------ 25-Sep-2003 11:25 5.0.0.943 37,136 Capture.dll 25-Sep-2003 11:25 5.0.0.943 323,856 Cedrmsgs.dll 25-Sep-2003 11:25 5.0.0.943 33,040 Comticontext.dll 25-Sep-2003 11:25 5.0.0.943 147,728 Convert.dll 25-Sep-2003 11:25 5.0.0.943 74,000 Convertprim.dll 25-Sep-2003 11:25 5.0.0.943 33,040 Dpl1.dll 25-Sep-2003 11:25 5.0.0.943 823,568 Dtcob390.dll 25-Sep-2003 11:25 5.0.0.943 311,568 Mobase.dll 25-Sep-2003 11:25 5.0.0.943 37,136 Playback.dll 25-Sep-2003 11:25 5.0.0.943 78,096 Readlib.dll 25-Sep-2003 11:25 5.0.0.943 123,152 Tadtlb.dll 25-Sep-2003 11:25 5.0.0.943 114,960 Tagen.dll 25-Sep-2003 11:25 5.0.0.943 82,192 Tranlu62.dll 25-Sep-2003 11:25 5.0.0.943 110,864 Trantcp.dll 25-Sep-2003 11:25 5.0.0.943 49,424 Turnaround.dll 25-Sep-2003 11:25 5.0.0.870 950,272 Componentbuilder.exe 29-Mar-2003 01:15 838,423 Comticb.chm 29-Mar-2003 01:15 812,988 Resnapin.chm
Note Because of file dependencies, the most recent fix that contains the preceding files may also contain additional files.
WORKAROUND
To work around this problem, change the string delimitation to Padded with spaces. This workaround resolves the problem for most situations. This workaround involves manually changing string delimitation for all the affected parameters in all the COMTI type libraries (possibly hundreds).
Important After you change this setting, all Null characters at the end of the string are returned to the client program (instead of just one terminating Null character being returned). Additionally, string delimitation affects both directions for an input/output string parameter. When you change string delimitation to Padded with spaces, data that is sent to the host will be padded with spaces. This setting may affect the host program.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article. This problem was corrected in Microsoft Host Integration Server 2000 Service Pack 2.
MORE INFORMATION
After you apply the hotfix, add the following registry entry to cause COMTI to return strings with embedded Null characters when Null terminated is selected.
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
Follow these steps, and then quit Registry Editor:
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following key in the registry:
HKEY_LOCAL_MACHINE\Software\Microsoft\Cedar\Defaults - Right-click Defaults, point to New, and then click Key.
- Name the key TrimTrailingNulls.
- Right-click TrimTrailingNulls, point to New, and then click Binary Value.
- Name the binary value Activate.
- Right-click Activate, and then click Modify.
- Press the number 2 key (a value of 20 appears).
- Click OK, and then close the Registry Editor window.
Note The value of the key can be whatever you want it to be. As long as the key exists, the change takes effect.
Additional query words:
Keywords: kbqfe kbhis2000fix kbprb kbhotfixserver KB828663
