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<TITLE> [Mono-bugs] [Bug 619534] New: Message filter using BeforeSendReply from IDispatchMessageInspector does not work as in Microsoft NET Framework
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<H1>[Mono-bugs] [Bug 619534] New: Message filter using BeforeSendReply from IDispatchMessageInspector does not work as in Microsoft NET Framework</H1>
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<B>bugzilla_noreply at novell.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%20619534%5D%20New%3A%20Message%20filter%20using%20BeforeSendReply%0A%20from%20IDispatchMessageInspector%20does%20not%20work%20as%20in%20Microsoft%20NET%20Framework&In-Reply-To="
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TITLE="[Mono-bugs] [Bug 619534] New: Message filter using BeforeSendReply from IDispatchMessageInspector does not work as in Microsoft NET Framework">bugzilla_noreply at novell.com
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</A><BR>
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<I>Fri Jul 2 08:46:12 EDT 2010</I>
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<PRE><A HREF="http://bugzilla.novell.com/show_bug.cgi?id=619534">http://bugzilla.novell.com/show_bug.cgi?id=619534</A>
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<A HREF="http://bugzilla.novell.com/show_bug.cgi?id=619534#c0">http://bugzilla.novell.com/show_bug.cgi?id=619534#c0</A>
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Summary: Message filter using BeforeSendReply from
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IDispatchMessageInspector does not work as in
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Microsoft NET Framework
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Classification: Mono
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Product: Mono: Class Libraries
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Version: 2.6.x
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Platform: Macintosh
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OS/Version: Mac OS X 10.6
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Status: NEW
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Severity: Major
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Priority: P5 - None
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Component: WCF
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AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">atsushi at ximian.com</A>
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ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">clovis.ribeiro at myabcm.com</A>
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QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
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Found By: ---
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Blocker: ---
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User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us)
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AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16
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If you create a message filter using IDispatchMessageInspector interface
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implementing BeforeSendReply and decide to completely replace the message
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inside, Mono ignores the replaced message.
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Example:
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If you write a message handler like the one below, the new message added to
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reply is ignored.
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public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply,
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object correlationState)'
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{
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reply = Message.CreateMessage(reply.Version, reply.Headers.Action,
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String.Empty);
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}
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After looking at Mono sources, file MessageProcessingContext.cs, I realized
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there is an error in BeforeSendReply() (line 125) that is not updating the
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ReplyMessage after calling the message inspectors. I fixed the code by doing
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the following:
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public void BeforeSendReply ()
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{
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Message toBeChanged = request_context.ReplyMessage;
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for (int i = 0; i < dispatch_runtime.MessageInspectors.Count; ++i)
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dispatch_runtime.MessageInspectors [i].BeforeSendReply (ref
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toBeChanged, msg_inspectors_states [i]);
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request_context.ReplyMessage = toBeChanged;
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}
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Note that I only added an extra line to write the toBeChanged back to
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request_context.ReplyMessage.
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This is exactly what is already being done in AfterReceiveRequest().
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My final point here is: although we have not tested yet because we are using
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only one message filter, I believe you should add the
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request_context.ReplyMessage = toBeChanged inside the for() loop. If you don't
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do that, only the last inspector will work correctly. I say that for
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BeforeSendReply() AND AfterReceiveRequest().
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Hope this helps and feel free to contact me as I have been digging inside this
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code for awhile.
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Reproducible: Always
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Steps to Reproduce:
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Create a message inspector by implementing
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IDispatchMessageInspector.BeforeSendReply() and completely replace the reply
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message inside BeforeSendReply()
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Actual Results:
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The new message is ignored.
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Expected Results:
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The new message should be sent back to the client.
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--
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Configure bugmail: <A HREF="http://bugzilla.novell.com/userprefs.cgi?tab=email">http://bugzilla.novell.com/userprefs.cgi?tab=email</A>
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------- You are receiving this mail because: -------
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You are the QA contact for the bug.
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</PRE>
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