A couple of java websocket fixes

[ac000]

This pull-request comprises two patches.

• java: websocket: Fix calculation of payload length for > 32bit values

This fixes a calculation that was done as an int when it should have been treated as a long.

• java: websocket: Additional payload length validation

This adds a check for negative payload lengths.

Both these patches were applied to the Apache Tomcat sources a number of years ago. Original patch links are in the commit messages.

The following changes since commit 3fea47eaa3edd916ecf0b339626dd5f963838295:

  python: Add Django 5.x compatibility (2025-02-21 01:20:31 +0000)

are available in the Git repository at:

  git@github.com:ac000/unit.git java

for you to fetch changes up to d7afeb2b94f1cd72ed02403609e5484f9514e5eb:

  java: websocket: Additional payload length validation (2025-02-21 22:49:15 +0000)

----------------------------------------------------------------
Mark Thomas (2):
      java: websocket: Fix calculation of payload length for > 32bit values
      java: websocket: Additional payload length validation

 src/java/nginx/unit/websocket/WsFrameBase.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

[ac000]

Thanks Zhidao!