Re^3: Net::SFTP::Foreign works intermittently

Apparently, the password is being send at the right time. I can't see any problem there.

Are you sure you are using the right password? could there be more than one server, with different configurations, listening at the same address?

You can also try running the program with strace and checking that the password is written to the PTY from the Perl side and also read from the ssh slave process correctly.

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Re^4: Net::SFTP::Foreign works intermittently by JustPerl (Initiate) on Jun 17, 2014 at 10:41 UTC
The password is correct as it is the same password which works smoothly for all the successful attempts. Shouldn't it work for a failed attempt too? There is no such other server which is listening on the same address. Also, I am creating these sftp connection objects from a script, which runs as a daemon/background job. And am invoking 10 such jobs or gearman worker threads. These worker threads listen to a webservice call. Whenever, there is a webservice call, one of the available worker threads serves the request, downloads the file from the remote server and does some processing. do you see any issue with spawning such number of worker threads which create the sftp connection objects? Please let me know.	[reply]
Re^5: Net::SFTP::Foreign works intermittently by salva (Canon) on Jun 17, 2014 at 10:57 UTC
Do all the tasks involve connecting to the same server with the same authentication credentials? or are there several servers or credential settings? How does Gearman Perl workers run at the OS level? are they threads inside some master process or are they different processes? There could be some race condition on the PTY allocation as performed by IO::Pty. Try the `strace` thing.	[reply] [d/l]
Re^6: Net::SFTP::Foreign works intermittently by JustPerl (Initiate) on Jun 17, 2014 at 11:19 UTC
Yes, all the tasks are connecting to the same server with the same authentication credentials. And each Gearman worker runs in its own process. Can you tell me on how to run the strace thing? any examples.	[reply]
Re^7: Net::SFTP::Foreign works intermittently by salva (Canon) on Jun 17, 2014 at 12:09 UTC
Re^7: Net::SFTP::Foreign works intermittently by salva (Canon) on Jun 17, 2014 at 13:14 UTC
Re^5: Net::SFTP::Foreign works intermittently by salva (Canon) on Jun 17, 2014 at 11:13 UTC
Setting `$IO::Tty::DEBUG = 1` may also show some interesting stuff.	[reply] [d/l]