Event delivery could be missed when local (XNET) protocol is used
-----------------------------------------------------------------

                 Key: CORE-6488
                 URL: http://tracker.firebirdsql.org/browse/CORE-6488
             Project: Firebird Core
          Issue Type: Bug
          Components: API / Client Library, Engine
    Affects Versions: 4.0 RC 1, 3.0.7, 2.5.9
         Environment: Windows only
            Reporter: Vlad Khorsun


The bug was reported at https://www.sql.ru/forum/1333365/

The problem could happen when:
- the op_event packet is longer than the XNET transmission buffer length (100 
bytes), and 
- client start to read data a bit later than server write first 100 bytes.

In this case race between writer and reader could happen and reader could miss 
first 100 bytes of the packet contents.

The bug is close to impossible to reproduce without artificial manipulation by 
running threads using debugger.
It might explain why it was not detected so far, since XNET was introduced.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: 
http://tracker.firebirdsql.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        


Firebird-Devel mailing list, web interface at 
https://lists.sourceforge.net/lists/listinfo/firebird-devel

Reply via email to