Creates a boundary from the value of the "boundary" parameter in a Content-type header (RFC2046, p.19) Alias of to_string.
Splits an multipart body into a list of messages, and, if there are, an optional prologue and epilogue.
Creates valid boundaries for given text.
Open an close boundaries
Used when the boundary indicates a new part
Used when the boundary indicates that there are no more parts
Used when the boundary indicates the beginning of the first part of the message, and there is no prologue.