[ANN] Apache Tomcat 11.0.0-M5 (alpha) available

[Mark Thomas <ma...@apache.org>]

The Apache Tomcat team announces the immediate availability of Apache
Tomcat 11.0.0-M5 (alpha).

Apache Tomcat 11 is an open source software implementation of the
Jakarta Servlet, Jakarta Server Pages, Jakarta Expression Language,
Jakarta WebSocket, Jakarta Authentication and Jakarta Annotations
specifications.

Users of Tomcat 10 onwards should be aware that, as a result of the move
from Java EE to Jakarta EE as part of the transfer of Java EE to the
Eclipse Foundation, the primary package for all implemented APIs has
changed from javax.* to jakarta.*. This will almost certainly require
code changes to enable applications to migrate from Tomcat 9 and earlier
to Tomcat 10 and later. A migration tool is available to aid this process.

Apache Tomcat 11.0.0-M5 is a milestone release of the 11.0.x branch and 
has been made to provide users with early access to the new features in 
Apache Tomcat 11.0.x so that they may provide feedback. The notable 
changes compared to 11.0.0-M4 include:

- Reduce the default value of maxParameterCount from 10,000 to 1,000.

- Correct a regression in the fix for bug 66442 that meant that streams
   without a response body did not decrement the active stream count
   when completing leading to ERR_HTTP2_SERVER_REFUSED_STREAM for some
   connections.

- Expand the validation of the value of the Sec-Websocket-Key header in
   the HTTP upgrade request that initiates a WebSocket connection. The
   value is not decoded but it is checked for the correct length and that
   only valid characters from the base64 alphabet are used.

Please refer to the change log for the complete list of changes:
http://tomcat.apache.org/tomcat-11.0-doc/changelog.html

Downloads:
http://tomcat.apache.org/download-11.cgi

Migration guides from Apache Tomcat 8.5.x, 9.0.x and 10.1.x:
http://tomcat.apache.org/migration.html

Enjoy!

- The Apache Tomcat team

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