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https://issues.apache.org/jira/browse/COMPRESS-584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthijs Laan updated COMPRESS-584:
-----------------------------------
Description:
When {{IOUtils.readRange(ReadableByteChannel)}} gets less than the number of
bytes asked for in the first read call it does not reduce the buffer size for
the next read call and may read more than asked for.
This situation is rare when using a {{FileChannel}} but I wrote a
{{SeekableByteChannel}} backed by a URI using HTTP range requests and reading
from a socket can often return less bytes than asked for. When I used this
channel to read a {{ZipFile}} it only read the ZIP central partially sometimes
because {{IOUtils.readRange()}} called
{{ZipFile.fromreadCentralDirectoryEntry()}} can read more bytes than asked for.
Fix: https://github.com/apache/commons-compress/pull/214
was:
When {{IOUtils.readRange(ReadableByteChannel)}} gets less than the number of
bytes asked for in the first read call it does not reduce the buffer size for
the next read call and may read more than asked for.
This situation is rare when using a {{FileChannel}} but I wrote a
{{SeekableByteChannel}} backed by a URI using HTTP range requests and reading
from a socket can often return less bytes than asked for. When I used this
channel to read a {{ZipFile}} it only read the ZIP central partially sometimes
because {{IOUtils.readRange()}} called
{{ZipFile.fromreadCentralDirectoryEntry()}} can read more bytes than asked for.
> IOUtils.readRange() can read more from a channel than asked for
> ---------------------------------------------------------------
>
> Key: COMPRESS-584
> URL: https://issues.apache.org/jira/browse/COMPRESS-584
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.21
> Reporter: Matthijs Laan
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When {{IOUtils.readRange(ReadableByteChannel)}} gets less than the number of
> bytes asked for in the first read call it does not reduce the buffer size for
> the next read call and may read more than asked for.
> This situation is rare when using a {{FileChannel}} but I wrote a
> {{SeekableByteChannel}} backed by a URI using HTTP range requests and reading
> from a socket can often return less bytes than asked for. When I used this
> channel to read a {{ZipFile}} it only read the ZIP central partially
> sometimes because {{IOUtils.readRange()}} called
> {{ZipFile.fromreadCentralDirectoryEntry()}} can read more bytes than asked
> for.
> Fix: https://github.com/apache/commons-compress/pull/214
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