Re: vbscript does .exec("ftp"), then hangs while accessing stdout and stderr

take a look here: and try to use the -s option
(be sure to have quit as last line in your ftp cmd file)
C:\>ftp -help

Transfers files to and from a computer running an FTP server service
(sometimes called a daemon). Ftp can be used interactively.

FTP [-v] [-d] [-i] [-n] [-g] [-s:filename] [-a] [-w:windowsize] [-A] [host]

-v Suppresses display of remote server responses.
-n Suppresses auto-login upon initial connection.
-i Turns off interactive prompting during multiple file
transfers.
-d Enables debugging.
-g Disables filename globbing (see GLOB command).
-s:filename Specifies a text file containing FTP commands; the
commands will automatically run after FTP starts.
-a Use any local interface when binding data connection.
-A login as anonymous.
-w:buffersize Overrides the default transfer buffer size of 4096.
host Specifies the host name or IP address of the remote
host to connect to.

Notes:
- mget and mput commands take y/n/q for yes/no/quit.
- Use Control-C to abort commands.

I would do run the ftp from script with syntax like this in your run cmd
ftp -s:inpCmd > sometempoutFile
then parse the sometempoutFile and generate another inputCmd file to run
ftp, and so on
"MLevin" <mikhail@xxxxxxxxx> wrote in message
news:1127913350.428450.321120@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hello,
>
> I am trying to write a vbscript ftp crawler. Using wscript.shell .run,
> I can run ftp with some pre-generated script. If I want to go
> recursively into folders, I should repeat running ftp again and again
> and again.
>
> I was wondering, if I can indeed control the ftp through wscript.shell
> .exec, printing ftp commands and reading ftp responses through stdout
> and stdin.
>
> With some simulated CMD script (prints ftp messages, waits for inputs)
> this works -- my script grabs what execed prints and submits some test
> words into it.
>
> But when I try to run the real ftp.exe, either directly, or through
> comspec /c, or through some CMD script, there is always the same
> problem:
>
> When accessing stdout or stderr AtEndOfStream property, or reading from
> them, cscript stops and waits forever. I mean, I can not even check for
> AtEndOfStream, because this check never ends!
>
> An example, the following script, running as cscript //nologo test1.vbs
> :
>
> ---
> Dim oWSH, oExec
> Dim oStdout, oStdin
> Dim sInput, cInput
> Dim sRead
>
> Set oWSH = CreateObject ("WScript.Shell")
>
> WScript.Echo "Start"
> Set oExec = oWSH.Exec ("ftp.exe")
> 'Set oExec = oWSH.Exec ("%COMSPEC% /c %WINDIR%\System32\ftp.exe")
> 'Set oExec = oWSH.Exec ("test.cmd")
> Set oStdout = oExec.StdOut
> Set oStdin = oExec.StdIn
> WScript.Echo "Started"
>
> ' Work until FTP.EXE works
> Do While oExec.Status = 0
> WScript.Echo "Debug . :" & "Do a check ..."
> WScript.Echo "Debug 0 :" & oExec.Status
> 'WScript.Echo "Debug 1a:" & oStdout.Read (1)
> WScript.Echo "Debug 1b:" & oStdout.AtEndOfStream
> WScript.Echo "Debug 2 :" & oExec.StdErr.AtEndOfStream
> WScript.Echo "Debug 3 :" & oStdin.AtEndOfStream
> WScript.Echo "Debug 4 :" & "done"
>
> ' Some olgic is skipped
>
> WScript.Echo "Debug 5 :" & "Waiting"
> WScript.Sleep 500
> Loop
> ---
>
> provides the following output:
> ---
> Start
> Started
> Debug . :Do a check ...
> Debug 0 :0
> ---
>
> and waiting forever then.
>
> Do you have any suggestions, what could be a problem with FTP.EXE when
> ran through .exec ?
>
> The same [mis]behavior is noted on Windows XP SP2, and on Windows 2000
> Server with latest SP.
>
> Mikhail.
>


.

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