hsynsvndk opened a new issue, #763:
URL: https://github.com/apache/mina-sshd/issues/763
### Version
2.12.1
### Bug description
Hi everyone,
I'm currently using sshd-core version 2.12.1 in a Maven-based Java project.
I wanted to upgrade to a more recent version (e.g., 2.15.0), but
unfortunately, I encountered a critical issue when downloading large files via
SFTP.
When I attempt to download a large file using SftpInputStreamAsync, I
receive the following exception:
`
java.lang.NullPointerException: Cannot invoke
"org.apache.sshd.common.util.buffer.Buffer.available()" because "this.buffer"
is null
at
org.apache.sshd.sftp.client.impl.SftpInputStreamAsync.sendRequests(SftpInputStreamAsync.java:245)
at
org.apache.sshd.sftp.client.impl.SftpInputStreamAsync.doRead(SftpInputStreamAsync.java:195)
at
org.apache.sshd.sftp.client.impl.SftpInputStreamAsync.transferTo(SftpInputStreamAsync.java:152)
`
This behavior does not occur in version 2.12.1, so I suspect it's a
regression introduced in 2.13.1 or later.
- Is this a known issue?
- Is there a recommended workaround for downloading large files with newer
versions?
Thanks a lot for your support and for maintaining this project!
### Actual behavior
.
### Expected behavior
.
### Relevant log output
```Shell
```
### Other information
_No response_
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