B4X

Serialize MIME to BinData

Demonstrates the Chilkat Mime.GetMimeBd method, which serializes the complete MIME entity and appends its bytes to a BinData. The only argument is the BinData; existing bytes are preserved.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the byte-exact serializer — the right choice when the MIME carries binary content such as an image or an 8-bit-encoded part, where routing the output through a text string could corrupt it. The result is a faithful byte stream you can write to a file, transmit, or hash. It pairs with LoadMimeBd for lossless round-tripping of binary MIME.

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B4X

Dim success As Boolean = False

'  Demonstrates the Mime.GetMimeBd method, which serializes the complete MIME entity and appends
'  its bytes to a BinData.  The only argument is the BinData.  Use this when arbitrary binary body
'  bytes must not pass through a text string.

Dim mime As ChilkatMime
mime.Initialize

success = mime.SetBodyFromFile("qa_data/photo.jpg")
If success = False Then
    Log(mime.LastErrorText)
    Return
End If


'  Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
Dim bd As ChilkatBinData
bd.Initialize
success = mime.GetMimeBd(bd)
If success = False Then
    Log(mime.LastErrorText)
    Return
End If


Log("Serialized " & bd.NumBytes & " bytes.")