----- Forwarded Message -----
From: Nguyen Tran Vu Linh <vlsuperman2...@yahoo.com>
To: Atsuhiko Yamanaka <y...@jcraft.com>
Sent: Tuesday, February 7, 2012 10:22 AM
Subject: SFTP directory existence checking error
Hi,
I'm using Jsch version 0.1.45 and I encountered an error as described below:
- When I keep SFTP channel connecting with SFTP server and transfer multiple
files (~1000), it throws out the exception "Pipe closed" at the directory
existence checking function.
- When I transfer files one-by-one (e.g. connect, put file, disconnect, and
then connect again....), it works fine.
I opened multiple channel in my system to boost the file transfer. Look at the
source code, I found that the stat(String path) method use the function that
can cause exception:
/*
* TODO: We should have our own Piped[I/O]Stream implementation.
* Before accepting data, JDK's PipedInputStream will check the existence of
* reader thread, and if it is not alive, the stream will be closed.
* That behavior may cause the problem if multiple threads make access to it.
*/
public synchronized void updateReadSide() throws IOException {
if(available() != 0){ // not empty
return;
}
in = 0;
out = 0;
buffer[in++] = 0;
read();
}
In version 0.1.46, I could see that this is not fixed. Do you consider it as a
critical bug?
Thanks,
Linh Nguyen.------------------------------------------------------------------------------
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