From: John Pywtorak <jpywtora@...>
Date: 2007-12-15T08:09:46+09:00
Subject: Re: How to maintain a single network connection? (newbie)

Hi Fenster,

I suspect it is the sftp.close stanza that is causing the problem.  Try 
removing that, what happens?

Also, I would recommend using the block form of Net::SSH.start if you 
can.  That is

Net::SSH.start(...) do |session|
   #do all your work here, pass the session to your methods
end

Johnny P

Fenster Blick wrote:
> 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