HexTcpQuery version history  2004-03-24

Corrected the license check so that it retains the license information in the case of a hexVeErrUnlicensedProcessors error.

1.2  2003-04-30

Added the LocalAddr, LocalPort, MaxBufferSize, and UseHalfClose properties.

Compensated for an apparent Microsoft bug that loses the last response character during character set conversion in the Query method.

1.1  2003-01-22

Changed the threading model to "Both" to make usage from .NET more flexible. The component can now work in both single-threaded apartments and multi-threaded apartments.

If you are upgrading to this version, you will need to re-register the DLL by running the installation program or using RegSvr32. Windows 95 users will need to have Internet Explorer 4 or later installed for the DCOM update it provides. You do not have to make any changes to your code.  2002-10-08

Fixed buffer overread when checking short, invalid runtime keys. This problem showed up only occasionally for users of languages that require direct use of IClassFactory2 (i.e., C++, Delphi).

1.0.19  2002-05-09

Changed the default for the TCP half close option: it is now off by default. Code that uses HexTcpQuery should continue working normally if query strings are properly terminated.  More information...

Improved license-checking code in several ways. The most visible consequence is that the component will pick up license file changes without requiring an IIS restart.

Added an anti-abuse clause to the license agreement.

1.0.18  2001-01-30

Made QueryBinary imuch more forgiving in what it accepts as a parameter. It will now take just about anything. If you pass it a byte array, it will transmit the array data verbatim. If you give it a string (or anything that can be coerced into a string), it will convert the string from Unicode to ANSI before sending it.

Fixed the Query method so it can now return complete binary data from a query. It had no trouble receiving binary data before, but the ANSI-to-Unicode conversion was truncating the response string at the first NULL character. This has been corrected. However, you should still bear in mind that 1) any single CR or LF characters get converted to CRLF pairs and 2) each byte of binary data is expanded to two bytes in the character set conversion. Thus, if you intend to receive binary data, the QueryBinary method is still your best bet.

1.0.17  2000-11-20

Added a registry value for setting the maximum receive buffer size.   More information...

Fixed bug that allowed use of only half the intended receive buffer.

1.0.16  2000-07-20

Added a registry key for turning off TCP half-close, enabling interoperation with certain rare (broken) server implementations.  More information...

1.0.15  2000-06-12

Improved runtime key handling. Now VB programs can be compiled with early binding during the evaluation period. (Before, VB would generate a "Permission denied" error. The workaround was to use late binding during evaluation.) After obtaining a license file, you will need to recompile VB programs in the presence of the license file so VB can embed a permanent runtime key (thereby allowing distribution without the license file).

1.0.14  2000-02-16

Fixed a problem that caused some license files to be incorrectly rejected as corrupt. Does not affect any current licensees.

1.0.13  1999-09-06

  • Fixed a problem occurring on NT4 prior to Service Pack 5 in which a query would wait for a connection for a system-specific time (typically 45 seconds) instead of the time specified by Timeout.

1.0.12  1999-04-26

  • Fixed a bug in the new expiration mechanism that prevented use of the runtime key.

1.0.11  1999-04-18

  • Modified the way the evaluation expiration works. You can now create an instance of the component after expiration, but all methods will fail, and the Error property will be set to the relevant license error. This reduces confusion when the evaluation expires and makes it easier to diagnose license file problems.

1.0  1998-09-15

  • Changed the name of the LicensedCpus property to LicensedProcessors to avoid ambiguity.
  • Added license-related error codes for the Error property

1.0 beta 2  1998-08-18

  • Added basic licensing properties: LicensedCpus, LicensedUser, Version
  • Fixed a problem with the Error property. In some timeout conditions, Error would have the value 10038 instead of the correct 10060 (hexTcpqErrTimedOut).

1.0 beta 1 1998-07-22

  • Initial version
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