HTTP Server for i

Secure, powerful, and complete

Overview

Getting Started

Documentation

Support

Limitations and Known Problems

The following limitations currently exist for the HTTP Server for i:

Also visit Compatibility Issues and Getting Started for other important considerations.

	Known Browser Problems for Web Administration
	Manage HTTP Server in IBM Web Administration for i5/OS
	HTTP Server (powered by Apache)
	Apache Software Foundation's Jakarta Tomcat on iSeries

• Resizing your browser window or frames within your browser may cause loss of un-saved changes.
• All Mozilla based browser windows on a workstation share the same session when using the ADMIN host:port.  This presents itself as a limitation to the Web Administration forms.  Do not open more than one browser to the same ADMIN host:port from the same workstation. Web Administration forms can not be used on multiple browsers using the same session.
• With Microsoft Internet Explorer browsers, do not use the "File, New, Window" sequence to open a new browser.  This will cause the same session to be used for the ADMIN server.  Web Administration forms can not be used on multiple browsers using the same session. 
• Microsoft Internet Explorer 5.0 browsers may not be serving customized HTTP error documents for RC 404.  If this is happening, you can change the behavior by un-clicking the preference to "See Friendly Error Messages." Error pages greater than 512 bytes automatically override the MSIE friendly error message browser setting.

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• Authorities to files and directories used for HTTP Server configuration are set when they are created.  If user profiles associated with the configuration change, then authority to the files and directories will need to be manually updated.
• Comments cannot be added to a configuration using the Web Administration forms. To add comments to a configuration, edit the configuration file directly. Note that the file can be edited using the Edit Configuration File tool for HTTP Server (powered by Apache).
• The contents of Access Control files (.htaccess files) can not be edited using the Web Administration forms.  Use a file editor of your choice to edit these files. 

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• Regular expressions contain characters such as '^', '[', ']','{, or '}' that are not supported by all CCSIDs. You must select a CCSID that supports these characters to start a server with a configuration file that contains regular expressions. The ADMIN server does contain regular expressions and will not start if, for example, you are running with Arabic CCSID 420. For Arabic, use EBCDIC CCSID 425 which contains all characters used in regular expressions.
• For Apache Software Foundation's list of known Apache problems see the Apache Bug Database.

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• Support for ASF Jakarta Tomcat on iSeries is limited to functions which can be configured using the Web Administration forms.  Function not supported includes items such as: 
  • RequestInterceptor for JDBCRealms
  • Load balancing
  • Java Security Manager (Normal iSeries user profiles can be used to secure and validate users, and protect directories and files in place of this.)
• Known scalability problems may exist depending on the application which is deployed.
• The HTTP Server for i product supports ASF Jakarta Tomcat with JDK 1.2 and 1.3 only.
• HTTP Server for i supports ASF Jakarta Tomcat 3.2.4. There are no plans to update to a later version. For more information see the ASF Jakarta Tomcat documentation.
• ASF Jakarta Tomcat on iSeries does not support enabling the stand alone HTTP server capabilities that are available from the open source Apache Software Foundation's Jakarta Tomcat Java code. 
• ASF Jakarta Tomcat on iSeries allows users to enable a "reloadable" feature for their servlets, whereby you can ask it to automatically reload servlet classes that have been changed.  This feature is experimental, and may not be completely functional.

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