Writes a part to a stream in a canonicalised format, suitable for signing/encrypting.
The transfer encoding paramaters for the part may be changed by this function.
part |
Part to write. |
flags |
flags for the canonicalisation filter (CamelMimeFilterCanon) |
ostream |
stream to write canonicalised output to. |
cancellable |
optional Cancellable object, or null |
-1 on error; |