Implementing IDisposable interface and possibility to stop Socket operations in
FbRemoteEvent
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Key: DNET-171
URL: http://tracker.firebirdsql.org/browse/DNET-171
Project: .NET Data provider
Issue Type: New Feature
Components: ADO.NET Provider
Affects Versions: 2.5.0 Alpha 2
Reporter: Pavel
Assignee: Jiri Cincura
is it possible to implement an IDisposable pattern for FbRemoteEvent? There are
a lot of small problems now. For instance:
if you pass an connection object to the FbRemoteEvent constructor there are two
possibilities
1) you are as owner responsible for destroying this connection object - doesn't
work for now, if you dispose connection, there is a socket exception, cause
RemoteEvent still tries to read from already disposed stream
2) FbRemoteEvent should destroy it - there is no place in code, where
FbRemoteEvent would manage connection dispose. As i understand, you cannot stop
it from listening at all. the thread, that is reading responses from server is
declared "background" and reads until owning window is destroyed (and causes
bunch of ThreadAbortedException's)
to understand the problem, consider this test case
FbConnection conn1 = new FbConnection("");
conn1.Open();
revent = new FbRemoteEvent(conn1, new[] { "event" });
revent.RemoteEventCounts += revent_RemoteEventCounts;
revent.QueueEvents();
revent.CancelEvents();
revent.RemoteEventCounts -= revent_RemoteEventCounts;
revent.Connection = null;
//this will cause an socket exception
conn1.Dispose();
Is there any possibility to implement some Stop method (that causes stoppage of
all socket/thread stuff) - in my opinion - CancelEvents might do this work.
And it would be nice to know, that the same functionality (and also dispose of
connection) would be done in Dispose method. We can still dispose connection on
our own, but only if we can stop socket listening (and this must be clearly
stated in docu).
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