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Help with EXPECT script hanging

 
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Old 03-11-2008
Tools Help with EXPECT script hanging
I am new at developing EXPECT scripts. I'm trying to create a script that will automatically connect to a UNIX server via FTP and download a log file from the server within a specified server directory on the remote machine. I'm having problems with the EXPECT script "hanging" at the password prompt. Any help would be appreciated to get this issue resolved. Below is the code snippet and the actual results that are shown when executing this Expect script within a Bash file. Please take into consideration that I can't provide the exact server name in the code snippet.

Code:

set tgtHostLong [lindex $argv 1]
set ftpUser [lindex $argv 2]
set password [lindex $argv 3]
set timeout -1
spawn ftp $tgtHostLong
match_max 100000
expect -exact "User ($tgtHostLongSmilienone)):"
send -- "$ftpUser\r"
expect -exact "Password: "
send -- "$password\r"
expect -exact "ftp> "

Actual Result:

spawn ftp xxxxxxxx.xxxx.xxx.com
User (xxxxxxxx.xxxx.xxx.comSmilienone)): m25047
Password:
 
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LEARN ABOUT DEBIAN

varnishtest

VARNISHTEST(1)															    VARNISHTEST(1)

NAME

       varnishtest - Test program for Varnish

SYNOPSIS

	  varnishtest [-n iter] [-q] [-v] file [file ...]

DESCRIPTION

       The varnishtest program is a script driven program used to test the Varnish Cache.

       The  varnishtest  program,  when  started  and  given  one or more script files, can create a number of threads representing backends, some
       threads representing clients, and a varnishd process.

       The following options are available:

       -n iter
	      Run iter number of iterations.

       -q     Be quiet.

       -v     Be verbose.

       -t     Dunno.

       file	   File to use as a script

SCRIPTS

   Example script
       # Start a varnish instance called "v1"
       varnish v1 -arg "-b localhost:9080" -start

       # Create a server thread called "s1"
       server s1 {
	   # Receive a request
	   rxreq
	   # Send a standard response
	   txresp -hdr "Connection: close" -body "012345
"
       }

       # Start the server thread
       server s1 -start

       # Create a client thread called "c1"
       client c1 {
	   # Send a request
	   txreq -url "/"
	   # Wait for a response
	   rxresp
       # Insist that it be a success
       expect resp.status == 200
       }

       # Run the client
       client c1 -run

       # Wait for the server to die
       server s1 -wait

       # (Forcefully) Stop the varnish instance.
       varnish v1 -stop

   Example script output
       The output, running this script looks as follows. The "bargraph" at the beginning of the line is an indication of the level  of	detail	in
       the line. The second field where the message comes from. The rest of the line is anyones guess :-)

       #  TEST tests/b00000.vtc starting
       ### v1  CMD: cd ../varnishd && ./varnishd -d -d -n v1 -a :9081 -T :9001 -b localhost:9080
       ### v1  opening CLI connection
       #### v1	debug| NB: Storage size limited to 2GB on 32 bit architecture,

       #### v1	debug| NB: otherwise we could run out of address space.

       #### v1	debug| storage_file: filename: ./varnish.Shkoq5 (unlinked) size 2047 MB.

       ### v1  CLI connection fd = 3
       #### v1	CLI TX| start
       #### v1	debug| Using old SHMFILE

       #### v1	debug| Notice: locking SHMFILE in core failed: Operation not permitted

       #### v1	debug| bind(): Address already in use

       #### v1	debug| rolling(1)...
       #### v1	debug| 

       #### v1	debug| rolling(2)...

       #### v1	debug| Debugging mode, enter "start" to start child

       ### v1  CLI 200 <start>
       ##  s1  Starting server
       ### s1  listen on :9080 (fd 6)
       ##  c1  Starting client
       ##  c1  Waiting for client
       ##  s1  started on :9080
       ##  c1  started
       ### c1  connect to :9081
       ### c1  connected to :9081 fd is 8
       #### c1	| GET / HTTP/1.1

       #### c1	| 

       ### c1  rxresp
       #### s1	Accepted socket 7
       ### s1  rxreq
       #### s1	| GET / HTTP/1.1

       #### s1	| X-Varnish: 422080121

       #### s1	| X-Forwarded-For: 127.0.0.1

       #### s1	| Host: localhost

       #### s1	| 

       #### s1	http[ 0] | GET
       #### s1	http[ 1] | /
       #### s1	http[ 2] | HTTP/1.1
       #### s1	http[ 3] | X-Varnish: 422080121
       #### s1	http[ 4] | X-Forwarded-For: 127.0.0.1
       #### s1	http[ 5] | Host: localhost
       #### s1	| HTTP/1.1 200 Ok

       #### s1	| Connection: close

       #### s1	| 

       #### s1	| 012345

       #### s1	| 

       ##  s1  ending
       #### c1	| HTTP/1.1 200 Ok

       #### c1	| Content-Length: 9

       #### c1	| Date: Mon, 16 Jun 2008 22:16:55 GMT

       #### c1	| X-Varnish: 422080121

       #### c1	| Age: 0

       #### c1	| Via: 1.1 varnish

       #### c1	| Connection: keep-alive

       #### c1	| 

       #### c1	http[ 0] | HTTP/1.1
       #### c1	http[ 1] | 200
       #### c1	http[ 2] | Ok
       #### c1	http[ 3] | Content-Length: 9
       #### c1	http[ 4] | Date: Mon, 16 Jun 2008 22:16:55 GMT
       #### c1	http[ 5] | X-Varnish: 422080121
       #### c1	http[ 6] | Age: 0
       #### c1	http[ 7] | Via: 1.1 varnish
       #### c1	http[ 8] | Connection: keep-alive
       #### c1	EXPECT resp.status (200) == 200 (200) match
       ##  c1  ending
       ##  s1  Waiting for server
       #### v1	CLI TX| stop
       ### v1  CLI 200 <stop>
       #  TEST tests/b00000.vtc completed

       If instead of 200 we had expected 201 with the line::

       expect resp.status == 201

       The output would have ended with::

       #### c1	http[ 0] | HTTP/1.1
       #### c1	http[ 1] | 200
       #### c1	http[ 2] | Ok
       #### c1	http[ 3] | Content-Length: 9
       #### c1	http[ 4] | Date: Mon, 16 Jun 2008 22:26:35 GMT
       #### c1	http[ 5] | X-Varnish: 648043653 648043652
       #### c1	http[ 6] | Age: 6
       #### c1	http[ 7] | Via: 1.1 varnish
       #### c1	http[ 8] | Connection: keep-alive
       ---- c1	EXPECT resp.status (200) == 201 (201) failed

SEE ALSO

       o varnishhist(1)

       o varnishlog(1)

       o varnishncsa(1)

       o varnishstat(1)

       o varnishtop(1)

       o vcl(7)

HISTORY

       The  varnishtest program was developed by Poul-Henning Kamp <phk@phk.freebsd.dk> in cooperation with Varnish Software AS.  This manual page
       was written by Stig Sandbeck Mathisen <ssm@linpro.no> using examples by Poul-Henning Kamp <phk@phk.freebsd.dk>.

COPYRIGHT

       This document is licensed under the same licence as Varnish itself. See LICENCE for details.

       o Copyright (c) 2007-2008 Varnish Software AS

AUTHOR

       Stig Sandbeck Mathisen

1.0								    2010-05-31							    VARNISHTEST(1)