[jira] Closed: (IO-227) AutoCloseInputStream.read() throws IOException after autoclose

["Joerg Schaible (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IO-227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joerg Schaible closed IO-227.
-----------------------------

    Resolution: Duplicate

> AutoCloseInputStream.read() throws IOException after autoclose
> --------------------------------------------------------------
>
>                 Key: IO-227
>                 URL: https://issues.apache.org/jira/browse/IO-227
>             Project: Commons IO
>          Issue Type: Bug
>          Components: Streams/Writers
>    Affects Versions: 1.4
>         Environment: Apple Inc. Java HotSpot(TM) 64-Bit Server VM 1.6.0_17; Mac OS X 10.5.8 (x86_64)
>            Reporter: Brett Johnson
>
> A custom reported a problem, wherein our product was catching and logging many IOExceptions.  Upon examining the logs I see:
> java.io.IOException: Attempted read on closed stream.
> 	at org.apache.commons.httpclient.AutoCloseInputStream.isReadAllowed(AutoCloseInputStream.java:183)
> 	at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:107)
> 	at java.io.FilterInputStream.read(FilterInputStream.java:116)
> 	at com.acme.DocPusher$BigEmptyDocumentFilterInputStream.read(DocPusher.java:679)
> 	at com.acme.CompressedFilterInputStream.fillbuff(CompressedFilterInputStream.java:96)
> 	at com.acme.CompressedFilterInputStream.read(CompressedFilterInputStream.java:67)
> 	at com.acme.Base64FilterInputStream.fillbuff(Base64FilterInputStream.java:138)
> 	at com.acme.Base64FilterInputStream.read(Base64FilterInputStream.java:115)
> 	at java.io.FilterInputStream.read(FilterInputStream.java:116)
> 	at com.acme.DocPusher$AlternateContentFilterInputStream.read(DocPusher.java:609)
>         ...
> As you can see, this is a pipeline consisting of multiple FilterInputStream segments that process data flowing through the pipeline.  The source of the data is in InputStream provided by a third party plug-in component.  In our customer's situation, that InputStream is a AutoCloseInputStream returned by a Sharepoint API call.
> When I saw the "Attempted read on closed stream.", I was incredulous; "Reading from a closed stream - that's a rookie mistake."  However, when examining the JavaDoc for AutoCloseInputStream, I read:  [emphasis mine]
> "Proxy stream that closes and discards the underlying stream *as soon as the end of input has been reached* or when the stream is explicitly closed."

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