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https://issues.apache.org/jira/browse/SSHD-765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16138684#comment-16138684
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Goldstein Lyor commented on SSHD-765:
-------------------------------------
Indeed a bug (which I am fixing) - as a temporary workaround until we release
this perhaps you can wrap the SFTP input stream inside a
{{BufferedInputStream}} so that reading one byte is never invoked:
{code:java}
try (InputStream sftpStream = sftp.read(...);
InputStream wrapper = new BufferedInputStream(sftpStream);
InputStream zipped = new GZipInputStream(wrapper)) {
....read from zipped stream...
}
{code}
> SFTP client fails to retrieve a binary file using an InputStream
> ----------------------------------------------------------------
>
> Key: SSHD-765
> URL: https://issues.apache.org/jira/browse/SSHD-765
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 1.6.0
> Reporter: Michael Binder
> Assignee: Goldstein Lyor
>
> The SFTP client fails to retrieve a binary file from an SFTP server using the
> InputStream returned by the {{SftpClient.read (String)}} method.
> In my case the binary file was actually a gzipped XML file. So I wrapped the
> returned InputStream in a {{java.util.zip.GZIPInputStream}} object. When
> reading from the stream I received an IOException with following message:
> "org.apache.sshd.client.subsystem.sftp.SftpInputStreamWithChannel.read()
> returned value out of range -1..255: -117".
> I think that this method violates the contract given in
> {{java.io.InputStream}}: "The value byte is returned as an int in the range 0
> to 255. If no byte is available because the end of the stream has been
> reached, the value -1 is returned."
> After I patched line 130 in SftpInputStreamWithChannel.java to
> {code:java}
> return bb[0] & 0xFF;
> {code}
> retrieving the file seemed to have worked fine.
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