Srp plugin keeps connection after database has been removed for ~10 seconds
(SS and SC).
-----------------------------------------------------------------------------------------
Key: CORE-6441
URL: http://tracker.firebirdsql.org/browse/CORE-6441
Project: Firebird Core
Issue Type: Bug
Components: Engine
Reporter: Pavel Zotov
Attachments: srp-cached-conn-after-drop-db-with-fixed-name.bat.7z,
srp-cached-conn-after-drop-db-with-random-name.bat.7z
Bug was encountered while implementing test for CORE-6412.
After discuss with Alex, it was decided to create seperate ticket.
Consider scenario:
0) choose some name for database file; REMOVE this file if it exists
LOOP:
1) create database which are self-security;
2) create user SYSDBA in this database, suing plugin Srp;
3) run ISQL and connect to this DB using TCP protocol, and do some trivial
query (say, to mon$ tables). Send STDERR to separate file.
4) exit from ISQL and change state of this DB to full shutdown. Send STDERR to
separate file (as on previous step; wil accumulating).
5) if size of STDERR log is greater than 0 - display its content and leave from
scenario; otherwise:
6) check attributes from DB header. Line must contain 'full shutdown'
7) REMOVE DATABASE FILE from disk (it always will be successful because of full
shutdown state)
8) make some pause, for ~10 seconds
9) LOOP to step "1)".
Run this scenario on SS or SC.
It will run infinitely. So far - so good.
Now reduce pause (see step "8") from 10s to some shorter value, say 4 seconds.
Script will perform successfully only FIRST iteration.
On *second* iteration it will raise:
=====
Statement failed, SQLSTATE = 08006
Error occurred during login, please check server firebird.log for details
=====
And in firebird.log we can see:
=====
Srp Server
connection shutdown
Database is shutdown.
=====
So, we can not create database when it surely does not exist.
Moreover, we can not create DB with RANDOM name also, not just with "fixed" one
(it can be easy checked by assigning to variable !dbnm! something like: set
dbnm=c:\temp\tmp4test_!random!.fdb )
Attachments:
srp-cached-conn-after-drop-db-with-fixed-name.bat.7z - when trying to operate
with the same DB file on each iter;
srp-cached-conn-after-drop-db-with-random-name.bat.7z -- when DB file is
random on each iter.
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