[Ssh-sftp-perl-users] Extra packet sent by SFTP, but only sometimes

[M B <mbw...@ho...>]

Perl script runs every minute to connect to a WinSSHD server to download 
files that may be present. Usually it connects and runs just fine. Every few 
hours or so (it seems to be random), during the connection attempt 
(Net::SFTP->new()), SFTP/SSH is sending an extra message that is causing the 
server to terminate the connection. This extra message is sent after 
authentication.

Here are the received messages from the server log:
SSH_MSG_CHANNEL_DATA: 5E00000001000000010A
SSH_MSG_CHANNEL_DATA: 5E0000000100000009000000050100000003

The first message is the extraneous one; on the successful connections, only 
the 2nd message is sent. Below is the log from the perl script. I can't 
really tell at what point in the code/connection process the extra message 
is being sent, or why.

Thanks in advance,
Matt

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phil: Login completed, opening dummy shell channel.
phil: channel 0: new [client-session]
phil: Requesting channel_open for channel 0.
phil: channel 0: open confirm rwindow 16384 rmax 35840
phil: Got channel open confirmation, requesting shell.
phil: Requesting service shell on channel 0.
phil: channel 1: new [client-session]
phil: Requesting channel_open for channel 1.
phil: Sending subsystem: sftp
phil: Requesting service subsystem on channel 1.
phil: channel 1: open confirm rwindow 16384 rmax 35840
phil: sftp: Sending SSH2_FXP_INIT
phil: channel 1: rcvd eof
phil: channel 1: output open -> drain
phil: channel 1: rcvd close
phil: channel 1: input open -> closed
phil: channel 1: close_read
phil: channel 1: obuf empty
phil: channel 1: output drain -> closed
phil: channel 1: close_write
phil: channel 1: send close
phil: channel 1: full closed

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