private/Get-WebResource.ps1
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function Get-WebResource { <# .Synopsis Call Invoke-WebRequest, repeating it in case of specific errors #> param ( [Parameter(Mandatory = $true, Position = 0, HelpMessage = 'The URL of the resource to be fetched')] [ValidateNotNull()] [string] $Uri, [Parameter(Mandatory = $false, Position = 1, HelpMessage = 'the output file for which this cmdlet saves the response body')] [string] $OutFile = '', [Parameter(Mandatory = $false, Position = 2, HelpMessage = 'The number of retries in case of specific errors')] [ValidateNotNull()] [ValidateRange(1, [int]::MaxValue)] [int] $Retries = 3 ) begin { Set-NetSecurityProtocolType $result = $null } process { if ($null -eq $OutFile) { $OutFile = ''; } for ($cycle = 0; $cycle -lt $Retries; $cycle++) { try { if ($OutFile -eq '') { $result = Invoke-WebRequest -Uri $Uri -UseBasicParsing -Verbose:$false } else { $result = Invoke-WebRequest -Uri $Uri -UseBasicParsing -OutFile $OutFile -Verbose:$false } break } catch [System.ComponentModel.Win32Exception] { if ($cycle -lt $Retries) { if ($_.ErrorCode -eq 0x80090304) { # The Local Security Authority cannot be contacted Write-Verbose "Downloading from {$Uri} failed with error $($_.Message): retrying..." continue } } throw $_ } } } end { $result } } |