Freeman Fang created CXF-7530:
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Summary: AttachmentSerializer miss a CRLF before the
multipart-body per spec rfc2046
Key: CXF-7530
URL: https://issues.apache.org/jira/browse/CXF-7530
Project: CXF
Issue Type: Bug
Reporter: Freeman Fang
In rfc2046[1], the MIME message should be
{code}
Appendix A -- Collected Grammar
This appendix contains the complete BNF grammar for all the syntax
specified by this document.
By itself, however, this grammar is incomplete. It refers by name to
several syntax rules that are defined by RFC 822. Rather than
reproduce those definitions here, and risk unintentional differences
between the two, this document simply refers the reader to RFC 822
for the remaining definitions. Wherever a term is undefined, it
refers to the RFC 822 definition.
boundary := 0*69<bchars> bcharsnospace
bchars := bcharsnospace / " "
bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" /
"+" / "_" / "," / "-" / "." /
"/" / ":" / "=" / "?"
body-part := <"message" as defined in RFC 822, with all
header fields optional, not starting with the
specified dash-boundary, and with the
delimiter not occurring anywhere in the
body part. Note that the semantics of a
part differ from the semantics of a message,
as described in the text.>
close-delimiter := delimiter "--"
dash-boundary := "--" boundary
; boundary taken from the value of
; boundary parameter of the
; Content-Type field.
delimiter := CRLF dash-boundary
discard-text := *(*text CRLF)
; May be ignored or discarded.
encapsulation := delimiter transport-padding
CRLF body-part
epilogue := discard-text
multipart-body := [preamble CRLF]
dash-boundary transport-padding CRLF
body-part *encapsulation
Freed & Borenstein Standards Track [Page 43]
RFC 2046 Media Types November 1996
close-delimiter transport-padding
[CRLF epilogue]
preamble := discard-text
transport-padding := *LWSP-char
; Composers MUST NOT generate
; non-zero length transport
; padding, but receivers MUST
; be able to handle padding
; added by message transports.
{code}
So the
{code}
multipart-body := [preamble CRLF]
preamble := discard-text
{code}
[1]https://www.ietf.org/rfc/rfc2046.txt
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