Changelog

THIS CHANGELOG IS NO LONGER MAINTAINED

Throw IllegalStateException for sanity-checking instead of assert statements inside SSHClient. (GH-89)
Use debug rather than info logging when failing to load keys from a location in sshClient.authPublickey(user, locations...). (GH-84)
Possibility of ArrayIndexOutOfBoundsException on channelOutputStream.write(). (GH-99, GH-104)
Add 'unconfirmed writes' feature to RemoteFileOutputStream, allowing for major speedups in SFTP upload (should be at least 2x, ymmv). This is brought to you by a new parameter in the RemoteFileOutputStream constructor called maxUnconfirmedWrites, which is utilised by sftpFileTransfer.upload() with a default value of 16. (GH-97)
We were missing a socket flush during the initial SSH banner exchange.
Transport/Connection/SFTP layer timeout methods are now millisecond granularity. getTimeout()/setTimeout() are called getTimeoutMs()/setTimeoutMs() respectively.
Simplified the UserAuth.authenticate(..) interface by making it one-method-at-time, with the trial and error business happening in SSHClient.
Added UserAuth.getAllowedMethods(). (GH-106)
StatefulSFTPClient.cd() should not update internal cwd state if stat fails. (GH-90)
Potential visibility issue on some channel request info received from server like exit status. (GH-114)
Dependency version updates.

Made logs less chatty by changing some info logging to be debug logging. (GH-80)
Regex pattern matching for password prompt in PasswordResponseProvider. (GH-77)
AbstractChannel.close() should be no-op if the channel is already closed. (GH-53?)

Make sshClient.disconnect() no-op if already disconnected / never connected (GH-67).
Set default tty to vt100 for shell sessions.
Much improved TransferListener interface that supports immutable implementation, however as it is signfiicantly different any overridden impl will break.
Fix for remote max packet size when greater than MAX_INT being treated as -1. (GH-57)
Avoid string concat in various logging statements.
sftpClient.mkdirs() will not attempt to create the rightmost child 2x if there was a trailing separator in path.
Fix for infinite loop in buffer allocation. (GH-72)
SFTPFileTransfer now has a preference for whether attributes should be preserved. (GH-42)

OpenSSHKnownHosts re-implemented to better support the format seen in the wild, e.g. optional markers. (GH-41)
SocketClient made public so that SSHClient can be mocked for testing.
Publish sources jar. (GH-37)
Fixed typo on SFTPClient.getFileTansfer()
Removed deprecated methods on Session.Command, getOutputAsString() and getErrorAsString().
Window adjustments were being logged incorrectly, fixed.
Fix a condition where ChannelOutputStream writes or flushes may wrongly block sitting around waiting for window adjustments where none was required. Issue was observed with non-OpenSSH servers like dropbear and WinSSHD. (GH-47)
Fix for using sshj in OSGi. (GH-50)
Local port forwarding - there was no way to cleanly close the server socket. (GH-26)

Race condition in AbstractChannel channel requests (0.6.0 regression). (GH-36)

In case of publickey authentication using a string rather than a file, prevent private key data from leaking in logs / on authentication exception. (GH-20)
SessionChannel#changeWindowDimensions was broken. (GH-21)
Prevent occasional spurious NPE when disconnecting at AbstractDirectChannel#notifyError.
SSHClient implements Closeable.
OSGi-fication. (GH-22)

DisconnectListener callback.
FileTransfer interface refactored. Local source and destination paths can be any implementation of LocalSourceFile and LocalDestFile, respectively.
Bug in case of SCP remote path having spaces fixed.
Deprecated Command#getOutputAsString() and Command#getErrorAsString() -- recommend using IOUtils#pipeStream(..) instead.
StreamCopier interface updated, now uses builder pattern. start() to spawn, copy() to do it in current thread and block.
Possible to specify an alternate path separator (for Windows SFTP servers).
Several internal refactorings that make the library nicer...

stderr ChannelInputStream gets correctly notified of errors e.g. at the transport layer.
Added a channel.join(timeout) variant.
An alternate AndroidConfig to initialize SSHClient with on Android 2.3+ was added, which uses JCERandom instead of BouncyCastleRandom.
In SCP upload, detect when destination directory does not exist. This was previously detected as a warning (well, technically it is sent as one...) but should truly be an error. All SCP 'warnings' now treated as errors.
Bug with StatefulSFTPClient#put fixed - was doing a get instead of a put!
SessionChannel reuse now gets an explicit runtime error.

channel.close() method no longer called implicitly on disconnecting, because this is error prone. See updated examples.
Logging fix: enable filtering, previously due to misconfiguration this was hard to do.
Don't barf when a server sends more CHANNEL_DATA than announced. Now there is no exception in this case, but still only as much data as announced is consumed.
Client was still identifying as SSHJ_0_1 -- changed to SSHJ_0_3.
Support for SFTP versions less than 3.
Host based authentication - see net.schmizz.sshj.userauth.method.AuthHostbased; pass an instance to SSHClient.auth() to use.
Added Channel.join() to allow blocking on channel close event. Useful e.g. when waiting for a command to exit.
Various code cleanups.

In 0.2.0 DefaultModeGetter and DeaultModeSetter started throwing exception when permissions couldn't be retrieved/assigned, and this was problematic on windows so the exception has been replaced with a log message.

Now compiled with compiler source and target level = 6 -- JRE 6+ is required! Always was, just more explicit now.
New methods in SFTPClient: checking if a file/directory exists (statExistence() -- returns null on file not found); recursively create directories (mkdirs()).
Bug with SFTP directory listing being truncated fixed.
Timestamps and permissions are now preserved by default when transferring with SCP or SFTP. A bug which prevented even using the ModeGetter or ModeSetter interface for this purpose has been quashed.
keyboard-interactive authentication now supported. SSHClient#authPassword() attempts to use it as a fallback by default.
An interface has been introduced for observing progress of file transfers (TransferListener) which can be registered with any FileTransfer implementation (i.e. SCPFileTransfer; SFTPFileTransfer).
Various bugfixes and improvements.