Powershell 3: preventing excessive memory usage for webrequest

Question

I wrote a short script that lets me download a file.

Invoke-WebRequest -Uri $r2.Forms.Action -WebSession $myWebSession -OutFile $destination$filename

The whole download is buffered in memory, which is obviously not optimal for larger files. I was wondering (and I couldnt find) a way/ property to prevent this and stream straight to disk. Something along the lines of AllowWriteStreamBuffering in .NET.

Out of Memory Exception When Using HttpWebRequest to Stream Large File

Any help is appreciated!

Hoax · Accepted Answer · 2015-02-02 15:48:09Z

5

Seems the only way to do this is using WebClient

$webclient = new-object System.Net.WebClient
$webclient.Credentials = new-object System.Net.NetworkCredential($id, $p, $url)
$webclient.DownloadFile($r2, $destination+$tempfile)

#rename tempfile
$filename = $webclient.ResponseHeaders["Content-Disposition"].SubString($webclient.ResponseHeaders["Content-Disposition"].IndexOf("filename=")+10).Replace("`"", "");
Rename-Item $destination$tempfile -NewName $filename

answered Feb 2, 2015 at 15:48

Hoax

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