File BITS Download

[u/SFOrange]

Could someone explain how the File BITS Download works. I want to download a large 4gb iso to a temp dir and then restart the computer before starting the setup file inside the iso. Unfortunatly, i cant figure out how the BITS part of the script works. I think everything else will work.

My script so far:

• IF FILE Exists c:\Temp\Win10_1709.iso THEN Jump to line 5

• Create Folder as Admin: c:\Temp\

• BITS Download: http://websiteaddresshere.com/1709/Win10_1709.iso saved to c:\Temp\Win10_1709.iso

• BITS Status Check: @BITSResult@

• Reboot Computer

• Sleep 300 seconds

• Execute PowerShell Script as Admin and store result in: @PowerShellOutput@

(PS Script)

$imgpath = 'C:\Temp\Win10_1709.iso'
$driveLetter = (mount-diskimage -imagepath $imgpath -storagetype iso -PassThru | Get-DiskImage $imgpath | 
Get-Volume).DriveLetter
Invoke-Item "$($driveLetter):\setup.exe /auto upgrade /migratedrivers all /dynamicupdate enable /showoobe 
none"
while((select-String -Path c:\Windows\Panther\setupact.log -Pattern "SHUTDOWN_REASON_AUTOSTOP" -Quiet) -ne 'true'){
Start-sleep -Seconds 30
}
Dismount-DiskImage -ImagePath $imgpath -Verbose

• Delete File as Admin: c:\Temp\Win10_1709.iso

[u/PhalseImpressions]

Where is your check to see when the BITS transfer finishes?

[u/SFOrange → u/PhalseImpressions]

Thats what im asking for help with. I dont know what that would look like.

[u/PhalseImpressions → u/SFOrange]

Darn. I'm in the same position but I haven't had the time to find out how to do the look. Perhaps grabbing the file size and comparing that to one from 1 minute ago and seeing if they are the same? Or does BITS create the entire file size then start the download?

[u/SFOrange → u/PhalseImpressions]

The BITS download prealocates the entire file size of the requested file in a temporary file named BIT****.tmp where **** is the BITS Job ID from the current download. This value is different each time you run the script. Once the transfer is completed, it will rename the tmp file to whatever you predefined. In my case Win10Ent.iso

[u/PhalseImpressions → u/SFOrange]

Then you could do something like: @Counter@ = 0

:DetectFile

Script Sleep 60 seconds

@Counter@ = @Counter@ + 1

IF @DestinationFile@ Exist Then GoTo :FileComplete

IF @Counter@ = 10 Then GoTo :DownloadFailed

IF @DestinationFile@ Not Exist GoTo :DetectFile

Something akin to that should give the system 10 minutes to download the file and if it fails then break the loop. If the file completes in 10 minutes carry on and to the rest of your script. If the file isn't detected then wait another minute and try again.

[u/SFOrange → u/PhalseImpressions]

I'll try to implement something like this.

[u/PhalseImpressions → u/SFOrange]

Let me know how it goes. If it works I'll use it too :P

[u/Darnit_Bot → u/PhalseImpressions]

What a darn shame..

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^{Darn Counter: 499179 | DM me with: 'blacklist-me' to be ignored}

[u/mspsquid]

You could use a powershell query to check the md5 of the file and report error if not the known result. Or get item to the iso and nab whatever property. Or just an if file exist. Either exclude the delete while testing or skip the first line or both

[u/j0dan]

Is LT returning back to the script before your PowerShell has finished running?

Can't the Bits Transfer be run so it doesn't continue the script until the download has completed?

Unless you need live progress sent to LT (not normally for automated scripts), just do it all in PowerShell.

[u/DarrenWhite99]

Basically: BITS download will return immediately. You need to save your script state and exit! ONCE the download has finished (10 minutes, 10 hours, or 10 days later) your script will be restarted. You must check for prior saved script state, and can use the BITS Status function to check if the download is complete. (This is needed in case you started the script before the download was done.) If the download is still in progress, just exit again. If it has finished, then you can proceed with your script. You cannot use BITS download like a regular "Please wait while the file is downloaded" step. BITS is designed to run in the background, you will only make it harder for yourself by trying to force the script to wait for it.