[jira] [Created] (SSHD-927) SFTP put fails terminating the connection if the remote file exists

["Logan (JIRA)" <ji...@apache.org>]

Logan created SSHD-927:
--------------------------

             Summary: SFTP put fails terminating the connection if the remote file exists
                 Key: SSHD-927
                 URL: https://issues.apache.org/jira/browse/SSHD-927
             Project: MINA SSHD
          Issue Type: Bug
    Affects Versions: 2.1.0
         Environment: Java:
C:\Program Files\Java\jdk1.8.0_201\bin>java -version
java version "1.8.0_201"
Java(TM) SE Runtime Environment (build 1.8.0_201-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.201-b26, mixed mode)

Apache SSHD : 2.1.0

C:\temp>sftp2 --version
sftp2: Tectia Client 6.4.14 on x86-pc-windows
Build: 26
Product: Tectia Client
License type: commercial


Copyright (C) SSH Communications Security Corporation.
This software is protected by international copyright laws.
All rights reserved.


This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit. (http://www.openssl.org/)
SFT API: 2.0.3 (build 6.4.14.26)

            Reporter: Logan


Sftp put fails if the file already exists on the sftp server, terminating the sfp session immediately.Below is the simple configuration to reproduce

 
{code:java}
SshServer sshd = SshServer.setUpDefaultServer();
sshd.setPort(9999);
sshd.setKeyPairProvider(new SimpleGeneratorHostKeyProvider());
sshd.setSubsystemFactories(Arrays.asList(new SftpSubsystemFactory()));
sshd.setFileSystemFactory(new VirtualFileSystemFactory(new File("C:/temp").toPath()));
sshd.setPasswordAuthenticator(AcceptAllPasswordAuthenticator.INSTANCE);
sshd.start();
{code}
 
{noformat}
C:\temp>sftp2 test@localhost#9999
Host key for the host "localhost#9999" not found from database.
The fingerprint of the host public key is:
Babble: "xodec-damen-ripeg-hehuh-venep-pebys-zureg-rynit-mypiz-byheh-zixax"
RFC4716: "1d:4f:c2:a4:fe:58:93:61:fe:44:69:26:f2:41:34:f7"

You can get a public key's fingerprint by running
% ssh-keygen-g3 -F publickey.pub
on the key file.
Please select how you want to proceed.
 cancel) Cancel the connection.
 once) Proceed with the connection but do not save the key.
 save) Proceed with the connection and save the key for future use.
Please select one (cancel, once, save): once
test@localhost#9999's password:
Remote system type is POSIX.
sftp> put ndp46-kb4483451-x64_41ba9b8a814351a318e78e4e1c02adc7e9fff67a.exe
Error: Connection lost.
{noformat}

 Upon Debugging I found the SftpSystem is terminated because the file channel recieved close command



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