AGS request payload compression test

testScript.ps1

$accessToken = "<AccessTokenWithMailSendPermission>"
$srcFileName = "PathToRequestPayloadUncompress-SeeOtherFile"
$destFileName = "APath"
$srcFileStream = New-Object System.IO.FileStream($srcFileName,([IO.FileMode]::Open),([IO.FileAccess]::Read),([IO.FileShare]::Read))
$destFileStream = New-Object System.IO.FileStream($destFileName,([IO.FileMode]::Create),([IO.FileAccess]::Write),([IO.FileShare]::None))
$gzip = New-Object System.IO.Compression.GZipStream($destFileStream,[System.IO.Compression.CompressionMode]::Compress)
$gzip.CopyTo($srcFileStream)
$gzip.Flush()
$destFileStream.Dispose()
Invoke-WebRequest -UseBasicParsing -Uri "https://graph.microsoft.com/v1.0/me/sendMail" `
-Method "POST" `
-Headers @{
  "Authorization"="Bearer $accessToken"
  "Accept"="*/*"
  "Accept-Encoding"="gzip, deflate, br"
  "Content-Encoding"="gzip"
} `
-ContentType "application/json" `
-InFile $destFileName

uncompressedPayload.txt

{"message":{"subject":"Meet for lunch?","body":{"contentType":"Text","content":"The new cafeteria is open."},"toRecipients":[{"emailAddress":{"address":"jane@contoso.onmicrosoft.com"}}]}}