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Justine Tunney 0ef0c933d2 Import code from internal repository to git
2016-03-01 17:59:16 -05:00
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jsch-0.1.44_google-src.jar Import code from internal repository to git 2016-03-01 17:59:16 -05:00
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README.google Import code from internal repository to git 2016-03-01 17:59:16 -05:00

README.google 

Project URL: http://www.jcraft.com/jsch
URL: http://downloads.sourceforge.net/project/jsch/jsch/0.1.44/jsch-0.1.44.zip?use_mirror=cdnetworks-us-1
Version: 0.1.44
License: BSD
License File: LICENSE

Description:
JSCH is a library for making SSH and SFTP connections from Java.

Local Modifications:
Added three new features and one backport. Default behavior is preserved if
they aren't used.

* Define global ThreadFactory instance. This allows the library to be used on
  App Engine, which doesn't allow apps to call `new Thread()`. To do this, you
  must override `JSch.threadFactory` with something from GAE's ThreadManager.
  Another global is also provided to disable calls to `Thread#setName` which
  always crash on GAE, regardless of ThreadFactory.

  Files edited:

    * JSch.java - Defined new `threadFactory` and `useThreadNames` fields.
    * Util.java - Updated thread creation code.
    * ChannelDirectTCPIP.java - Updated thread creation code.
    * ChannelSubsystem.java - Updated thread creation code.
    * ChannelShell.java - Updated thread creation code.
    * Session.java - Updated thread creation code.
    * ChannelForwardedTCPIP.java - Updated thread creation code.
    * ChannelExec.java - Updated thread creation code.

* Multiple pending requests with SFTP. Disabled by default. Call
  SftpChannel.setMaxPendingRequests(n) with n > 1 to enable (64 is a reasonable
  value). Can provide speed improvements of 10-20x if Periscope is disabled,
  and approximately 7x if Periscope is enabled and write flushing is disabled.

  Files edited:

    * ChannelSftp.java - Added alternate methods (fastGet, fastRead) that use
                         new algorithm. If feature is enabled, the local window
                         size will be set to Integer.MAX_VALUE, since flow
                         control is already handled by SFTP, and some servers
                         don't work well with smaller windows.

* Disable flushing of writes. Flushing is enabled by default. Call
  Session.setFlushingEnabled(false) before connecting to disable. Due to
  Periscope latency, flushing must be disabled to take advantage of multiple
  pending requests.

  Files edited:

    * Session.java - Added simple getter/setter for flushingEnabled boolean.
    * IO.java - Added optional flushingEnabled constructor arg. Disabled
                flushing when flushingEnabled is false.

* Added support for diffie-hellman-group14-sha1 key exchange algorithm to
  maintain connections to servers using upgraded OpenSSL.

  Files edited:

    * JSch.java - Added diffie-hellman-group14-sha1 to kex config.
    * DHG14.java - Added, patched from version 0.1.46.
    * jce/DH.java - Modified to support DH groups >1024 bits by ignoring
                    JDK<8 exception and testing length of keys.