[#DIRSERVER-390] Extended operation causes client to hang

Directory ApacheDS

Extended operation causes client to hang

Created: 19/Sep/05 12:12 AM Updated: 10/Feb/06 12:34 PM

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Affects Version/s:

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Fix Version/s:

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File Attachments:

File Name	Date Attached	Attached By	Size
patch_DIREVE-256.txt	2005-09-19 12:27 AM	Stefan Zoerner	2 kB
UnknownExtendedOperationTest.java	2005-09-19 12:20 AM	Stefan Zoerner	3 kB

Resolution Date:

24/Sep/05 11:14 AM

Description

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If a client calls an arbitrary extended operation, the server (namely the ExtendedHandler) throws a NotImplementedException. After this, the call of the client blocks, and the client hangs.
I suggest to change the handler to simply send an error code 2 (LDAP_PROTOCOL_ERROR) with message "Unrecognized extended operation" back to the client. This is the expected behavior if an extended operation is not supported by the server.

Attached you find a test case, which demands an always unknown extended operation (OID=1.1) and checks the result. Error code 2 leads to a CommunicationException in JNDI. I have tested this with several LDAP server implementations, behavior was always as expected.
I have also attached a patch, which changes the ExtendedHandler to behave like described above. Not a big thing, but it leads to compliant behavior for extended ops, even if we do not have any in place yet.

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Stefan Zoerner made changes - 19/Sep/05 12:20 AM

Field	Original Value	New Value
Attachment		UnknownExtendedOperationTest.java [ 12314432 ]

Stefan Zoerner made changes - 19/Sep/05 12:27 AM

Attachment

patch_DIREVE-256.txt [ 12314433 ]

Alex Karasulu made changes - 24/Sep/05 10:18 AM

Status

Open [ 1 ]

In Progress [ 3 ]

Alex Karasulu made changes - 24/Sep/05 11:14 AM

Status	In Progress [ 3 ]	Resolved [ 5 ]
Resolution		Fixed [ 1 ]

Alex Karasulu made changes - 24/Sep/05 11:14 AM

Fix Version/s		0.9.3 [ 12310193 ]
Affects Version/s	0.9.3 [ 12310193 ]

Stefan Zoerner made changes - 26/Sep/05 05:24 PM

Status

Resolved [ 5 ]

Closed [ 6 ]

Alex Karasulu made changes - 10/Feb/06 12:34 PM

Key	DIREVE-256	~~DIRSERVER-390~~
Project	Directory Server [ 10516 ]	Directory ApacheDS [ 12310260 ]
Component/s	protocol [ 11087 ]
Affects Version/s	0.9.2 [ 12310192 ]
Fix Version/s	0.9.3 [ 12310193 ]