tomaswolf commented on issue #468: URL: https://github.com/apache/mina-sshd/issues/468#issuecomment-1960124555
AFAIK dropbear does not have SFTP, so some external SFTP is used. Either OpenSSH, or some other implementation. Do you have more information on that server? Since it occurs apparently only with that particular server my first guess would be that this is a server problem. Though it is not impossible that it might be some bug in Apache MINA SSHD that is triggered only in very specific circumstances that just happen to occur only with this server... Tweaking parameters or the buffer size should not be necessary; looks to me that this tweaking just happens to avoid the precise circumstances that trigger this bug, wherever it might be, in your case. Absent a reproducer that we could live debug, this would need a full trace log, plus information about the file content (at what offsets exactly do duplications occur? How long are the duplications? Expected/actual file size?) The trace log should have information about all blocks received, and their offsets and lengths. But that log might be huge. From code inspection I see only one possibility for something like this to occur: if the server returns _more_ data than the client requested for a chunk. But that should never happen; such a server would violate the SFTP protocol. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For additional commands, e-mail: dev-h...@mina.apache.org
