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Posted to dev@hc.apache.org by "Cory Lum (Created) (JIRA)" <ji...@apache.org> on 2012/03/29 22:28:22 UTC
[jira] [Created] (HTTPCLIENT-1178) NPE thrown in
DefaultUserTokenHandler
NPE thrown in DefaultUserTokenHandler
-------------------------------------
Key: HTTPCLIENT-1178
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1178
Project: HttpComponents HttpClient
Issue Type: Bug
Components: HttpClient
Affects Versions: 4.1.3
Reporter: Cory Lum
java.lang.NullPointerException
at org.apache.http.impl.client.DefaultUserTokenHandler.getAuthPrincipal(DefaultUserTokenHandler.java:91)
at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:72)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at some.package.SomeClass.execute(SomeClass.java:123)
-or-
java.lang.NullPointerException
at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:79)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at some.package.SomeClass.execute(SomeClass.java:123)
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[jira] [Resolved] (HTTPCLIENT-1178) NPE thrown in
DefaultUserTokenHandler
Posted by "Oleg Kalnichevski (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HTTPCLIENT-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Oleg Kalnichevski resolved HTTPCLIENT-1178.
-------------------------------------------
Resolution: Invalid
Cory,
This pretty much explains it. I also looked at the exception stack traces and found out NPEs were most likely caused by concurrent modification of the context content by multilpe threads.
HttpContext instances may not be shared by multiple threads regardless whether the implementation itself is thread safe or not, as they may contain non-thread safe objects such as HttpConnection and AuthState.
Each thread of execution should have a dedicated HttpContext instance.
Oleg
> NPE thrown in DefaultUserTokenHandler
> -------------------------------------
>
> Key: HTTPCLIENT-1178
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1178
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient
> Affects Versions: 4.1.3
> Reporter: Cory Lum
>
> java.lang.NullPointerException
> at org.apache.http.impl.client.DefaultUserTokenHandler.getAuthPrincipal(DefaultUserTokenHandler.java:91)
> at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:72)
> at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
> at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
> at some.package.SomeClass.execute(SomeClass.java:123)
> -or-
> java.lang.NullPointerException
> at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:79)
> at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
> at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
> at some.package.SomeClass.execute(SomeClass.java:123)
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[jira] [Commented] (HTTPCLIENT-1178) NPE thrown in
DefaultUserTokenHandler
Posted by "Cory Lum (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HTTPCLIENT-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242629#comment-13242629 ]
Cory Lum commented on HTTPCLIENT-1178:
--------------------------------------
This might be happening because I'm using BasicHttpContext instead of SyncBasicHttpContext in a multi-threaded threaded execution..
> NPE thrown in DefaultUserTokenHandler
> -------------------------------------
>
> Key: HTTPCLIENT-1178
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1178
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient
> Affects Versions: 4.1.3
> Reporter: Cory Lum
>
> java.lang.NullPointerException
> at org.apache.http.impl.client.DefaultUserTokenHandler.getAuthPrincipal(DefaultUserTokenHandler.java:91)
> at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:72)
> at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
> at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
> at some.package.SomeClass.execute(SomeClass.java:123)
> -or-
> java.lang.NullPointerException
> at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:79)
> at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
> at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
> at some.package.SomeClass.execute(SomeClass.java:123)
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