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Subject: Re: Sasl issue: ServerSaslResponseCallback(): using empty data[]
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From: Andrew Purtell <andrew.purtell@gmail.com>
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Date: Fri, 25 May 2012 08:48:12 -0700
To: "user@zookeeper.apache.org" <user@zookeeper.apache.org>
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Eugene is going to be away until early next month. If there is a demonstrati=
on of the problem I'm happy to look at it.=20

    - Andy

On May 25, 2012, at 6:28 AM, Antonio Mauriello <antoniomau@gmail.com> wrote:=


> Hi Patrick, I've posted some details on ZOOKEEPER-1437.
> I didn't get a chance to post a demo yet though.
> On May 25, 2012 2:07 AM, "Patrick Hunt" <phunt@apache.org> wrote:
>=20
>> Seems the client is sending a 0 size token in this case: "Size of
>> client SASL token: 0"
>>=20
>> Eugene any insight?
>>=20
>> Patrick
>>=20
>> On Fri, May 18, 2012 at 8:40 AM, Antonio Mauriello <antoniomau@gmail.com>=

>> wrote:
>>> Hi,
>>>=20
>>> In a specif scenario where the Zookeeper Server get killed and restarted=

>>> while a java zk client is connected I get the following in the log:
>> (Please
>>> note the Error at bottom)
>>>=20
>>> [main-SendThread(localhost:60728)] DEBUG
>>> org.apache.zookeeper.client.ZooKeeperSaslClient  -
>>> ClientCnxn:sendSaslPacket:length=3D0
>>> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:60728] DEBUG
>>> org.apache.zookeeper.server.ZooKeeperServer  - Responding to client SASL=

>>> token.
>>> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:60728] DEBUG
>>> org.apache.zookeeper.server.ZooKeeperServer  - Size of client SASL
>> token: 0
>>> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:60728] DEBUG
>>> org.apache.zookeeper.server.ZooKeeperServer  - Size of server SASL
>>> response: 101
>>> [main-SendThread(localhost:60728)] DEBUG org.apache.zookeeper.ClientCnxn=

>> -
>>> Reading reply sessionid:0x1376082ca4f0000, packet:: clientPath:null
>>> serverPath:null finished:false header:: 9,102  replyHeader:: 9,0,0
>>> request::   response::
>>>=20
>> #7265616c6d3d227a6b2d7361736c2d6d6435222c6e6f6e63653d22717a485932306a5674=
3534552f483668315837734e2b4b56656e4c335772666458716f6468336247222c6368617273=
65743d7574662d382c616c676f726974686d3d6d64352d73657373
>>> 2012-05-18 15:14:16,908 [SyncThread:0] DEBUG
>>> org.apache.zookeeper.server.FinalRequestProcessor  - Processing request:=
:
>>> sessionid:0x1376082ca4f0000 type:ping cxid:0xfffffffffffffffe
>>> zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a
>>> 2012-05-18 15:14:16,908 [SyncThread:0] DEBUG
>>> org.apache.zookeeper.server.FinalRequestProcessor  -
>>> sessionid:0x1376082ca4f0000 type:ping cxid:0xfffffffffffffffe
>>> zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a
>>>=20
>>> [main-EventThread] DEBUG org.apache.zookeeper.client.ZooKeeperSaslClient=

>> -
>>> ServerSaslResponseCallback(): using empty data[] as server response
>>> (length=3D0)
>>> [main-EventThread] DEBUG org.apache.zookeeper.client.ZooKeeperSaslClient=

>> -
>>> saslToken (server) length: 0
>>> [main-EventThread] DEBUG org.apache.zookeeper.client.ZooKeeperSaslClient=

>> -
>>> saslClient.evaluateChallenge(len=3D0)
>>> [main-EventThread] ERROR org.apache.zookeeper.client.ZooKeeperSaslClient=

>> -
>>> An error: (java.security.PrivilegedActionException:
>>> javax.security.sasl.SaslException: DIGEST-MD5: Digest-challenge format
>>> violation: algorithm directive missing) occurred when evaluating
>> Zookeeper
>>> Quorum Member's  received SASL token. Zookeeper Client will go to
>>> AUTH_FAILED state.
>>> [main-EventThread] ERROR org.apache.zookeeper.client.ZooKeeperSaslClient=

>> -
>>> SASL authentication failed using login context 'null'.
>>>=20
>>>=20
>>> I was wondering why the "empty data[]" is expected since it always drive=
s
>>> in my case to a SASL authentication failed.
>>>=20
>>>=20
>>> I know this is not the correct set up but at moment only one Zk server i=
s
>>> set up. Not sure if this is actually causing the issue.
>>>=20
>>>=20
>>> Thanks
>>> Antonio
>>=20