From: Fenster Blick <abcdesi@...>
Date: 2007-12-15T07:52:17+09:00
Subject: How to maintain a single network connection? (newbie)

Hi, I am a beginner to Ruby, having come over from the Java side of
things. I am writing a simple script to familiarize myself with the
Net-SSH and Net-SFTP libraries. I want to split my script into several
different functions to improve readability and organization.

However, I'm having difficulty doing this. When I create an SSH
connection, the connection automatically dies after I exit the function.
How can I keep this connection alive? I tried storing the connection as
a global variable but it did not work - the connection still closed.

Here is a portion of my script. When I run it, I call "testAll". It
fails on the first line of sftpTest1A:
----------------------------------------

$session = nil

def sftpTest1
    puts "Testing sftp..."
    $session= Net::SSH.start( '127.0.0.1', :username=>'user',
:password=>'password' )
     sftp = $session.sftp.connect
        handle = sftp.opendir( "." )
        items = sftp.readdir(handle)
        puts items
        sftp.close_handle( handle )
      sftp.close
   #At this point, session should still be open, correct?
end


def sftpTest1A
  shell = $session.shell.open #FAILS at this line!

  shell.pwd

  print shell.stdout while shell.stdout?
  $stderr.puts "-- stderr: --"
  $stderr.print shell.stderr while shell.stderr?

  $session.close

end

def testAll
  sftpTest1
  sftpTest1A
end
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