Tuesday, February 28, 2012

Thoth Gateway version 1.3.6 available

There is a new version of the Thoth Gateway, a mod_plsql replacement for IIS, available for download. The latest version is 1.3.6.

CC by Flickr user gzayatz

The previous version available for download was 1.3.0, so there are a number of enhancements and bug fixes rolled up into this release, including:

Version 1.3.6

Bug fix: Value of the CGI environment variable LOGON_USER was empty on IIS 7 running in Integrated pipeline mode: This was due to a breaking change on IIS 7. The Thoth Gateway now hooks into the PostAuthenticate event, rather than the BeginRequest event, in order for information about the current user to be available when using Windows Integrated Authentication.

Version 1.3.5

Hide server banner: A new top-level (non-DAD-specific) configuration parameter, HideServerBanner, has been added. If this is set to true (the default is false), the server will not emit the response server headers that identify the server as IIS powered by ASP.NET. This can improve security in certain situations, and reduces the response size. Requires IIS 7 with "integrated pipeline" mode.

Set SOAP date format: A new DAD-specific configuration parameter, SoapDateFormat, has been added. The default is YYYY-MM-DD"T"HH24:MI:SS. This is used to set the database session NLS date format when the gateway receives a SOAP request. You can adjust this parameter if your SOAP clients are sending dates with an UTC time indicator or offset.

Bug fix: Don't upload empty files: The gateway incorrectly uploaded files even from an empty file browse field (when the user submitted a form without having selected a file).

Bug fix: Handle responses with HTTP headers but no HTTP body: An ArgumentOutOfRangeException was thrown if the request included (just) HTTP headers without any body.

Version 1.3.4

Bug fix: Handle missing accept-encoding header: Dynamic content compression did not correctly handle clients with missing accept-encoding header.

Version 1.3.3

Serve static content from gateway folder: A new top-level (non-DAD-specific) configuration parameter, ServeStaticContent, has been added. If this is set to true (the default is false), the gateway will check if the requested URL maps to a physical file, and if so, will serve up this file instead of connecting to the database.

Compress dynamic content: A new top-level (non-DAD-specific) configuration parameter, CompressDynamicContent, has been added. If this is set to true (the default is false), and the client (browser) signals that it can accept compressed content, the gateway will compress the generated output (using GZip or Deflate, depending on the client's stated preference). This reduces network traffic at the cost of more CPU usage on the server. Note that although the default value of this is false (for backwards compatibility), I recommend you set the parameter to true, as it can give your website a significant performance boost.

Version 1.3.2

SOAP Faults: A database exception during a SOAP request now creates a SOAP Fault response that contains the database error message (see the SoapErrorStyle configuration parameter), instead of the normal 404 error (or debug error page).

Version 1.3.1

Performance optimization: The main PL/SQL procedure call issued by the gateway now also includes the call to check if the response is a file download (which used to be a separate PL/SQL call). This reduces the total number of database calls, thereby improving performance.

For existing installations, simply overwrite the existing PLSQLGatewayModule.dll file in the "bin" folder with the latest version from the downloaded archive.