You might want to look at Net::ssh2 timeout and look at syphilis's reply about setting the poll(0). Net::SSH2 does sftp. Possibly, you could find how to set the poll() from your script.

Upon looking thru the Net::SSH2 docs for clues, it seems a timeout value for the connection gets set 

connect ( handle | host [, port [, Timeout => secs ]] )

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Since sftp uses ssh2 libs, there probably is some arcane way of you setting the ssh2 options from sftp. Or do like the rest of the modern world, and move up to Net::SSH2.
I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku

In reply to Re: My Perl/Expect script aborts when sftp connection stalls at remote destination by zentara
in thread My Perl/Expect script aborts when sftp connection stalls at remote destination by c84032002

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