Hi,
We receive the stack trace below from the container we are using (Tomcat
running TopBraid semantic software TBL). However a similar stack was
reproduced when developing with TBC.
Analyzing this TBL stack trace, we see Connection refused at the cause,
which, as far as I studied, reflects a pure server OS response stating that
either no process is listening port 80, or that the accept queue is full on
the port - the inbound SYN queue.
Restarting the client program (it was TBC then, not TBL) solved the issue
in one instance, which suggests it can be a client issue too, like misusing
connections, but I would expect a Connection timeout, not an active server
response (a TCP packet sent by the server) stating that the TCP request for
handshake is rejected.
org.topbraid.spin.sparqlmotion.modules.SMException: Failed to authenticate
at
org.topbraidlive.sparqlmotion.modules.PostRequestModule.perhapsAuthenticate(PostRequestModule.java:168)
at
org.topbraidlive.sparqlmotion.modules.PostRequestModule.execute(PostRequestModule.java:62)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:204)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.executeModule(ExecutionEngineImpl.java:170)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:120)
at
org.topbraid.spin.sparqlmotion.modules.impl.SMFunction.exec(SMFunction.java:93)
... 50 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:249)
at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:79)
at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:121)
at
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)
at
org.topbraidlive.server.workspace.DeployUtil.isFormAuthetication(DeployUtil.java:68)
at
org.topbraidlive.server.workspace.DeployUtil.authenticate(DeployUtil.java:46)
at
org.topbraidlive.sparqlmotion.modules.PostRequestModule.perhapsAuthenticate
On Fri, Jul 11, 2014 at 5:26 PM, Nick Abston <nabs...@topquadrant.com>
wrote:
> Hi Nicu,
>
> Can you please elaborate on the setup and process that failed?
>
> Thanks
>
>
> On Fri, Jul 11, 2014 at 9:55 AM, Nicolae Marasoiu <
> nicolae.maras...@gmail.com> wrote:
>
>> Hi,
>>
>> We had 2 instances where a web service over http using basic auth
>> reported "Authentication failed", but with "Connection refused" as the
>> stack cause (ConnectException).
>>
>> Restarting TBC solved it. With TBL we did not restart yet.
>>
>> However, "Connection refused" is supposed to be a response from the
>> remote server host stating that the OS found the port being not listened,
>> or having full accept queue. Simply restarting the client seems
>> contradictory to solve this, but it did.
>>
>> Please advice,
>> Nicu Marasoiu
>> Computas AS
>>
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>
>
> --
> Nick Abston, Systems Administrator
>
> TopQuadrant, Inc., www.topquadrant.com
> @TopQuadrant http://twitter.com/topquadrant
>
> Office/Cell: [USA] (919)-809-9827
>
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