Upload BIG files via HTTP

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Thank you @Stoune, it was last thing that helped to receive finally working solution.

One more, it is need to organize stream file reading and writing to the webrequest buffer. And it possibly to do with that piece of code:

$requestStream = $webRequest.GetRequestStream()
$fileStream = [System.IO.File]::OpenRead($file)
$chunk = New-Object byte[] $bufSize
  while( $bytesRead = $fileStream.Read($chunk,0,$bufsize) )
  {
    $requestStream.write($chunk, 0, $bytesRead)
    $requestStream.Flush()
  }

And final script look like this:

$user = "admin"
$pass = "admin123"
$dir = "C:\Virtual Hard Disks"
$fileName = "win2012r2std.vhdx"
$file = "$dir/$fileName"
$url = "http://nexus.lab.local:8081/nexus/content/sites/myproj/$fileName"
$Timeout=10000000
$bufSize=10000

$cred = New-Object System.Net.NetworkCredential($user, $pass)

$webRequest = [System.Net.HttpWebRequest]::Create($url)
$webRequest.Timeout = $timeout
$webRequest.Method = "POST"
$webRequest.ContentType = "application/data"
$webRequest.AllowWriteStreamBuffering=$false
$webRequest.SendChunked=$true # needed by previous line
$webRequest.Credentials = $cred

$requestStream = $webRequest.GetRequestStream()
$fileStream = [System.IO.File]::OpenRead($file)
$chunk = New-Object byte[] $bufSize
  while( $bytesRead = $fileStream.Read($chunk,0,$bufsize) )
  {
    $requestStream.write($chunk, 0, $bytesRead)
    $requestStream.Flush()
  }

$responceStream = $webRequest.getresponse()
#$status = $webRequest.statuscode

$FileStream.Close()
$requestStream.Close()
$responceStream.Close()

$responceStream
$responceStream.GetResponseHeader("Content-Length") 
$responceStream.StatusCode
#$status

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