From: Pau Garcia i Quiles <pgquiles@...>
Date: 2006-11-09T03:43:59+09:00
Subject: Re: Net::SSH Data Stream Problem

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On Wednesday 08 November 2006 18:28, Andrew Stewart wrote:

What about this:
http://www.elpauer.org/index.php?p=3D213

require 'net/ssh'
require 'net/sftp'

class SSHAgent
  def initialize
        @agent_env =3D Hash.new
        agenthandle =3D IO.popen("/usr/bin/ssh-agent -s", "r")
        agenthandle.each_line do |line|
          if line.index("echo") =3D=3D nil
                  line =3D line.slice(0..(line.index(';')-1))
                  key, value =3D line.chomp.split(/=3D/)
                  puts "Key =3D #{key}, Value =3D #{value}"
                  @agent_env[key] =3D value
          end
        end
  end
  def [](key)
        return @agent_env[key]
  end
end

agent =3D SSHAgent.new
ENV["SSH_AUTH_SOCK"] =3D agent["SSH_AUTH_SOCK"]
ENV["SSH_AGENT_PID"] =3D agent["SSH_AGENT_PID"]
system("/usr/bin/ssh-add")

Net::SSH.start( '192.168.1.12',
                :username=3D>'pgquiles',
                :compression_level=3D>0,
                :compression=3D>'none'
              ) do |session|
                     session.sftp.connect do |sftp|
                     sftp.put_file("bigvideo.avi", "bigvideo.avi")
                end
end

That code is using public-key, password-less cryptography, but with slight=
=20
modifications it will work with public-key+password or only password. There=
=20
is some more info about Net::SFTP in the blog post.


> Hello,
>=20
> I am trying to copy a file from my local machine to a remote machine =20
> using Net::SSH.  The copy fails part way leaving the file partly =20
> written on the remote machine.  The size of the remote file portion =20
> is always 131072 bytes (128 kB).  My local file is ~1.2MB.  This =20
> leads me to suspect that the data are being fed in chunks and =20
> something is going wrong after the first chunk -- though that's a guess.
>=20
> Here's the output:
>=20
> Copying /path/to/my/file.zip to /path/to/remote/directory/=20
> file.zip...done.
> /usr/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.9/lib/net/ssh/transport/=20
> session.rb:256:in `wait_for_message': disconnected: Received data for =20
> nonexistent channel 0. (2) (Net::SSH::Transport::Disconnect)
>          from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.9/lib/net/=20
> ssh/transport/session.rb:240:in `wait_for_message'
>          from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.9/lib/net/=20
> ssh/connection/driver.rb:148:in `process'
>          from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.9/lib/net/=20
> ssh/connection/driver.rb:138:in `loop'
>          from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.9/lib/net/=20
> ssh/service/process/popen3.rb:66:in `popen3'
> [snipped rest of trace]
>=20
> Interestingly the 'puts "...done."' line is executed before the error =20
> is thrown.  Since session.process.popen3 is synchronous, does that =20
> not imply that the copy has finished?
>=20
> And here's the code (based on Ruby Cookbook recipe 14.11):
>=20
> require 'rubygems'
> require 'net/ssh'
>=20
> host =3D 'xyz.com'
> user =3D 'me'
> upload_dir =3D '/path/to/remote/directory/'
> my_file =3D '/path/to/my/file.zip'
>=20
> def copy_file(session, source_path, destination_path=3Dnil)
>    destination_path ||=3D source_path
>    cmd =3D %{cat > "#{destination_path.gsub('"', '\"')}"}
>    session.process.popen3 cmd do |stdin, stdout, stderr|
>      print "Copying #{source_path} to #{destination_path}..."
>      open(source_path) { |f| stdin.write f.read }
>      puts "done."
>    end
> end
>=20
> Net::SSH.start(host, :username =3D> user) do |session|
>    copy_file session, my_file, my_file.sub(/^.*\//, "#{upload_dir}")
> end
>=20
> I would greatly appreciate any help.
>=20
> Thanks and regards,
> Andy Stewart
>=20
>=20
>=20
>=20

=2D-=20
Pau Garcia i Quiles
http://www.elpauer.org
(Due to the amount of work, I usually need 10 days to answer)

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