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Robey Pointer
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README
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README
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paramiko 1.7
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"zubat" release, 18 feb 2007
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Copyright (c) 2003-2007 Robey Pointer <robey@lag.net>
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========
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paramiko
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========
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http://www.lag.net/paramiko/
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:Paramiko: Python SSH module
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:Copyright: Copyright (c) 2003-2007 Robey Pointer <robey@lag.net>
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:License: LGPL
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:Homepage: http://www.lag.net/paramiko/
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*** WHAT
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paramiko 1.7.1
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==============
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"Amy" release, 10 june 2007
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What
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----
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"paramiko" is a combination of the esperanto words for "paranoid" and
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"friend". it's a module for python 2.2+ that implements the SSH2 protocol
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@ -25,34 +36,40 @@ the package and its API is fairly well documented in the "doc/" folder
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that should have come with this archive.
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*** REQUIREMENTS
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Requirements
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------------
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python 2.3 <http://www.python.org/>
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- python 2.3 <http://www.python.org/>
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(python 2.2 is also supported, but not recommended)
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pycrypto 1.9+ <http://www.amk.ca/python/code/crypto.html>
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- pycrypto 1.9+ <http://www.amk.ca/python/code/crypto.html>
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(2.0 works too)
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pycrypto compiled for Win32 can be downloaded from the HashTar homepage:
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http://nitace.bsd.uchicago.edu:8080/hashtar
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you can also build it yourself using the free MinGW tools and this command
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line (thanks to Roger Binns for the info):
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line (thanks to Roger Binns for the info)::
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python setup.py build --compiler=mingw32 bdist_wininst
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If you have setuptools, you can build and install paramiko and all its
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dependencies with this command (as root):
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dependencies with this command (as root)::
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easy_install ./
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*** PORTABILITY
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Portability
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-----------
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i code and test this library on Linux and MacOS X. for that reason, i'm
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pretty sure that it works for all posix platforms, including MacOS. i
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also think it will work on Windows, though i've never tested it there. if
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you run into Windows problems, send me a patch: portability is important
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pretty sure that it works for all posix platforms, including MacOS. it
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should also work on Windows, though i don't test it as frequently there.
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if you run into Windows problems, send me a patch: portability is important
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to me.
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python 2.2 may work, thanks to some patches from Roger Binns. things to
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watch out for:
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* sockets in 2.2 don't support timeouts, so the 'select' module is
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imported to do polling.
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* logging is mostly stubbed out. it works just enough to let paramiko
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@ -65,22 +82,22 @@ you really should upgrade to python 2.3. laziness is no excuse! :)
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some python distributions don't include the utf-8 string encodings, for
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reasons of space (misdirected as that is). if your distribution is
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missing encodings, you'll see an error like this:
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missing encodings, you'll see an error like this::
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LookupError: no codec search functions registered: can't find encoding
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this means you need to copy string encodings over from a working system.
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(it probably only happens on embedded systems, not normal python
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installls.)
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Valeriy Pogrebitskiy says the best place to look is
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'.../lib/python*/encodings/__init__.py'.
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installls.) Valeriy Pogrebitskiy says the best place to look is
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``.../lib/python*/encodings/__init__.py``.
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*** BUGS & SUPPORT
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Bugs & Support
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--------------
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there's a launchpage page for paramiko, with a bug tracker:
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http://www.launchpad.net/products/paramiko/
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https://launchpad.net/paramiko/
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this is the primary place to file and browse bug reports.
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@ -89,10 +106,11 @@ there's also a low-traffic mailing list for support and discussions:
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http://www.lag.net/mailman/listinfo/paramiko
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*** DEMO
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Demo
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----
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several demo scripts come with paramiko to demonstrate how to use it.
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probably the simplest demo of all is this:
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probably the simplest demo of all is this::
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import paramiko, base64
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key = paramiko.RSAKey(data=base64.decodestring('AAA...'))
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@ -104,37 +122,38 @@ probably the simplest demo of all is this:
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print '... ' + line.strip('\n')
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client.close()
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...which prints out the results of executing 'ls' on a remote server.
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...which prints out the results of executing ``ls`` on a remote server.
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(the host key 'AAA...' should of course be replaced by the actual base64
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encoding of the host key. if you skip host key verification, the
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connection is not secure!)
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the following example scripts (in demos/) get progressively more detailed:
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demo_simple.py
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:demo_simple.py:
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calls invoke_shell() and emulates a terminal/tty through which you can
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execute commands interactively on a remote server. think of it as a
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poor man's ssh command-line client.
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demo.py
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:demo.py:
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same as demo_simple.py, but allows you to authenticiate using a
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private key, attempts to use an SSH-agent if present, and uses the long
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form of some of the API calls.
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forward.py
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:forward.py:
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command-line script to set up port-forwarding across an ssh transport.
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(requires python 2.3.)
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demo_sftp.py
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:demo_sftp.py:
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opens an sftp session and does a few simple file operations.
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demo_server.py
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:demo_server.py:
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an ssh server that listens on port 2200 and accepts a login for
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'robey' (password 'foo'), and pretends to be a BBS. meant to be a
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very simple demo of writing an ssh server.
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*** USE
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Use
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---
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the demo scripts are probably the best example of how to use this package.
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there is also a lot of documentation, generated with epydoc, in the doc/
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@ -142,78 +161,8 @@ folder. point your browser there. seriously, do it. mad props to
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epydoc, which actually motivated me to write more documentation than i
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ever would have before.
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there are also unit tests here:
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there are also unit tests here::
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$ python ./test.py
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which will verify that most of the core components are working correctly.
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*** WHAT'S NEW
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highlights of what's new in each release:
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v1.7 ZUBAT
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* added x11 channel support (patch from david guerizec)
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* added reverse port forwarding support
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* (bug 75370) raise an exception when contacting a broken SFTP server
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* (bug 80295) SSHClient shouldn't expand the user directory twice when reading
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RSA/DSS keys
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* (bug 82383) typo in DSS key in SSHClient
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* (bug 83523) python 2.5 warning when encoding a file's modification time
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* if connecting to an SSH agent fails, silently fallback instead of raising
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an exception
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v1.6.4 YANMA
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* fix setup.py on osx (oops!)
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* (bug 69330) check for the existence of RSA/DSA keys before trying to open
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them in SFTPClient
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* (bug 69222) catch EAGAIN in socket code to workaround a bug in recent
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Linux 2.6 kernels
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* (bug 70398) improve dict emulation in HostKeys objects
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* try harder to make sure all worker threads are joined on Transport.close()
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v1.6.3 XATU
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* fixed bug where HostKeys.__setitem__ wouldn't always do the right thing
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* fixed bug in SFTPClient.chdir and SFTPAttributes.__str__ [patch from
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mike barber]
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* try harder not to raise EOFError from within SFTPClient
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* fixed bug where a thread waiting in accept() could block forever if the
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transport dies [patch from mike looijmans]
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v1.6.2 WEEDLE
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* added support for "old" group-exchange server mode, for compatibility
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with the windows putty client
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* fixed some more interactions with SFTP file readv() and prefetch()
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* when saving the known_hosts file, preserve the original order [patch from
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warren young]
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* fix a couple of broken lines when exporting classes (bug 55946)
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v1.6.1 VULPIX
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* more unit tests fixed for windows/cygwin (thanks to alexander belchenko)
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* a couple of fixes related to exceptions leaking out of SFTPClient
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* added ability to set items in HostKeys via __setitem__
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* HostKeys now retains order and has a save() method
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* added PKey.write_private_key and PKey.from_private_key
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v1.6 UMBREON
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* pageant support on Windows thanks to john arbash meinel and todd whiteman
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* fixed unit tests to work under windows and cygwin (thanks to alexander
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belchenko for debugging)
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* various bugfixes/tweaks to SFTP file prefetch
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* added SSHClient for a higher-level API
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* SFTP readv() now yields results as it gets them
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* several APIs changed to throw an exception instead of "False" on failure
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*** MISSING LINKS
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* allow setting chmod bits on SFTPClient.open() for create
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* host-based auth (yuck!)
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* ctr forms of ciphers are missing (blowfish-ctr, aes128-ctr, aes256-ctr)
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* sftp protocol 6 support (ugh....) -- once it settles down more
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* make a simple example demonstrating use of SocketServer (besides forward.py?)
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* should SSHClient try to use openssh config files?
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* figure out how to parse ssh.com encrypted key files?
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* is it possible to poll on a set of events at once?
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* potentially create only one thread shared by all Transports
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* SSHClient: flag to turn off agent detection? flag to turn off keyfile discovery?
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