Private/New-MultipartFileContent.ps1
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function New-MultipartFileContent { [OutputType('System.Net.Http.MultipartFormDataContent')] [CmdletBinding()] param( [Parameter(Mandatory)] [System.IO.FileInfo]$File, [string]$HeaderName='file' ) # Need to load System.Net.Http on Desktop edition if (-not $PSEdition -or $PSEdition -eq 'Desktop') { Add-Type -AssemblyName System.Net.Http } # build the header and make sure to include quotes around Name # and FileName like https://github.com/PowerShell/PowerShell/pull/6782) $fileHeader = New-Object System.Net.Http.Headers.ContentDispositionHeaderValue 'form-data' $fileHeader.Name = "`"$HeaderName`"" $fileHeader.FileName = "`"$($File.Name)`"" # build the content $fs = New-Object System.IO.FileStream @($File.FullName, [IO.FileMode]::Open, [IO.FileAccess]::Read, [IO.FileShare]::Read) $fileContent = New-Object System.Net.Http.StreamContent $fs # $fileBytes = [System.IO.File]::ReadAllBytes($File.FullName) # $fileContent = New-Object System.Net.Http.ByteArrayContent $fileBytes $fileContent.Headers.ContentDisposition = $fileHeader $fileContent.Headers.ContentType = [System.Net.Http.Headers.MediaTypeHeaderValue]::Parse('application/octet-stream') # add it to a new MultipartFormDataContent object $multipart = New-Object System.Net.Http.MultipartFormDataContent $multipart.Add($fileContent) # get rid of the quotes around the boundary value # https://github.com/PowerShell/PowerShell/issues/9241 $boundary = $multipart.Headers.ContentType.Parameters | Where-Object { $_.Name -eq 'boundary' } $boundary.Value = $boundary.Value.Trim('"') return @(,$multipart) } |