functions/Invoke-WUDownload.ps1
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<#
.SYNOPSIS Download files at high speed using aria2. .DESCRIPTION Download files at high speed using aria2. .EXAMPLE PS C:\>Invoke-WUDownload -URI "https://wslstorestorage.blob.core.windows.net/wslblob/wsl_update_x64.msi" -Destination $env:TMP -MaxConnectionPerServer 16 -Force This example downloads the file from the specified URI to $env:TMP. The maximum number of connections to one server is 16. Overwrites the destination file if it already exists. #> [CmdletBinding( SupportsShouldProcess, DefaultParameterSetName = 'Path' )] param ( #Specifies the Uniform Resource Identifier (URI) of the internet resource to which the web request is sent. Enter a URI. [Parameter(Mandatory, Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName)] [ValidateNotNullOrEmpty()] [uri] $Uri, # Specifies the path to the location where the items are being moved. The default is the current directory. [ValidateNotNullOrEmpty()] [string] $Destination = $PWD.Path, # Specify the maximum number of connections to one server. The range of numbers is 1 to 16. [ValidateRange(1, 16)] [int] $MaxConnectionPerServer = 1, # Specify when overwriting the file. [switch] $Force ) $Destination = $psCmdlet.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Destination) if ((Test-Path -LiteralPath $Destination -PathType Container)) { $outDir = $Destination $outName = '' } else { $outDir = Split-Path $Destination -Parent $outName = Split-Path $Destination -Leaf } if ($pscmdlet.ShouldProcess($URI, 'Download')) { Write-Host "Downloading from '$URI'" $ariaCmd = '& aria2c --auto-file-renaming=false -x {0} -d "{1}"' -f $MaxConnectionPerServer, $outDir if ($outName) { $ariaCmd = '{0} -o "{1}"' -f $ariaCmd, $outName } if ($Force) { $ariaCmd = '{0} --allow-overwrite=true' -f $ariaCmd } $ariaCmd = '{0} "{1}"' -f $ariaCmd, $URI Invoke-Expression $ariaCmd } |