AutoIt Requires Chilkat v11.0.0+

Create Binary MIME

See more MIME Examples

Demonstrates how to create and save a multipart/mixed MIME document where the parts (a JPG and a PDF) are NOT base64 encoded, but are instead binary. AutoIt

Local $bSuccess = False

;  This example requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

$oMime = ObjCreate("Chilkat.Mime")

$oMime.SetBodyFromPlainText("This is the plain text body.")
$oMime.ConvertToMultipartMixed()
$oMime.AppendPartFromFile("qa_data/jpg/penguins.jpg")
$oMime.AppendPartFromFile("qa_data/pdf/fishing.pdf")

;  At this point, when saved, the MIME bodies will be base64 encoded.
$oMime.SaveMime("qa_output/sample.txt")

;  We now have the following MIME where everything is base64 encoded:
;  The code that follows shows how to eliminate the base64 to make this binary MIME.

;  	Content-Type: multipart/mixed; boundary="------------000207060703080505060404"
;  
;  	--------------000207060703080505060404
;  	Content-Type: text/plain
;  	Content-Transfer-Encoding: 7bit
;  
;  	This is the plain text body.
;  	--------------000207060703080505060404
;  	Content-Disposition: attachment; filename="penguins.jpg"
;  	Content-Type: image/jpeg; name="penguins.jpg"
;  	Content-Transfer-Encoding: base64
;  
;  	/9j/4AAQSkZJRgABAgEAYABgAAD/7gAOQWRvYmUAZAAAAAAB/+ESCEV4aWYAAE1NACoAAAAIAAcB
;  	MgACAAAAFAAAAGIBOwACAAAABwAAAHZHRgADAAAAAQAEAABHSQADAAAAAQA/AACcnQABAAAADgAA
;  	...
;  	800a1MlLipJHlyU9en7sqVPkBK+gBj+o+1E91Ld7iJk0pJDO5PmDk4FOGOHy6S3JW120W1uCJ5M0
;  	PBa54edOFAc8ePX/2Q==
;  
;  	--------------000207060703080505060404
;  	Content-Disposition: attachment; filename="fishing.pdf"
;  	Content-Type: application/pdf; name="fishing.pdf"
;  	Content-Transfer-Encoding: base64
;  
;  	JVBERi0xLjMKJcfsj6IKNSAwIG9iago8PC9MZW5ndGggNiAwIFIvRmlsdGVyIC9GbGF0ZURlY29k
;  	ZT4+CnN0cmVhbQp4nM1c288cNxVX09A0myq35tom7bSl8E1hp76P/YpASIiXlEg8tDwVKEJfilIe
;  	...
;  	MDRGMT48OTlENkRFQzExQjkzNjA0Mjc1RUFCNzIyMjI4RjA0RjE+XQo+PgpzdGFydHhyZWYKMjk0
;  	MzY5CiUlRU9GCg==
;  
;  	--------------000207060703080505060404--
;  

;  To make it binary MIME (getting rid of the base64), set the Encoding property to "binary"
;  for the JPG and PDF parts.

$oJpgPart = ObjCreate("Chilkat.Mime")
$oMime.PartAt(1,$oJpgPart)

$oJpgPart.Encoding = "binary"

$oPdfPart = ObjCreate("Chilkat.Mime")
$oMime.PartAt(2,$oPdfPart)

$oPdfPart.Encoding = "binary"

;  Now save it.  If you try to view this MIME in a text editor,
;  the JPG and PDF parts will be garbled and unintelligible. That's because
;  the bytes do not represent characters.
$oMime.SaveMime("qa_output/sampleBinary.mim")

;  The MIME now contains this:

;  	Content-Type: multipart/mixed; boundary="------------000207060703080505060404"
;  
;  	--------------000207060703080505060404
;  	Content-Type: text/plain
;  	Content-Transfer-Encoding: 7bit
;  
;  	This is the plain text body.
;  	--------------000207060703080505060404
;  	Content-Disposition: attachment; filename="penguins.jpg"
;  	Content-Type: image/jpeg; name="penguins.jpg"
;  	Content-Transfer-Encoding: binary
;  
;  	<Binary Data Here>
;  
;  	--------------000207060703080505060404
;  	Content-Disposition: attachment; filename="fishing.pdf"
;  	Content-Type: application/pdf; name="fishing.pdf"
;  	Content-Transfer-Encoding: binary
;  
;  	<Binary Data Here>
;  
;  	--------------000207060703080505060404--
;  

;  Can we load this binary MIME into an Email object?
$oBinData = ObjCreate("Chilkat.BinData")
;  Write the binary MIME into binData;
$oMime.GetMimeBd($oBinData)

$oEmail = ObjCreate("Chilkat.Email")
;  Load the email from the binData.
$oEmail.SetFromMimeBd($oBinData)

;  Note: Many email clients may not be able to correctly process emails
;  using the binary encoding.  Thunderbird has trouble.  Windows Live Mail
;  worked OK.
$oEmail.Subject = "Binary MIME Email"
$oEmail.From = "admin@chilkatsoft.com"
$oEmail.AddTo("Chilkat","support@chilkatsoft.com")
$oEmail.SaveEml("qa_output/binaryEmail.eml")

;  Chilkat does not recommend trying to use binary MIME for email.
;  Binary MIME is typically used in HTTP for uploads and downloads.
;  

;  Also, binary MIME is not representable in a string.  
;  If we try to get the MIME as a string, then it must be encoded
;  using base64.

;  Chilkat automatically changes binary encodings to base64
;  when there's an attempt to get the MIME as a string.
$oSb = ObjCreate("Chilkat.StringBuilder")
$oEmail.GetMimeSb($oSb)
$oSb.WriteFile("qa_output/email_fromSb.eml","utf-8",False)

;  Likewise, if we try to get the MIME as a string from the Mime object, 
;  it cannot contain non-character data in a binary encoding.  The binary
;  bytes MUST be in base64.  The act of trying to retrieve the MIME in string
;  format will force Chilkat to convert binary encodings (for non-text parts)
;  to base64.
$oMime.GetMimeSb($oSb)
$oSb.WriteFile("qa_output/mime_fromSb.eml","utf-8",False)

;  However, the above use of base64 is just for the purpose of making the MIME
;  string friendly.  If we save the MIME to a file, it's still binary:
$oMime.SaveMime("qa_output/mime_binary.mime")