[jdev] base64 line endings
YBilyk at luxoft.com
Mon Apr 17 00:44:35 CDT 2006
Same happends in case of SASL authorization.
Some implementation allows challenges/responses contain linefeeds,
some - don't.
From: jdev-bounces at jabber.org on behalf of Norman Rasmussen
Sent: Sun 16.04.2006 15:41
To: Jabber software development list
Subject: [jdev] base64 line endings
It seems that JEP-0084 is inadvertently conflicting with itself by
saying that data must be encoded the RFC 3548 way, and not explicitly
allowing line feeds.
So something to add to JEP-0084 v0.8 would be to explicitly allow line feeds.
JEP-0084: User Avatar refers to RFC 3548 (The Base16, Base32, and
Base64 Data Encodings), and in Section 2.1 it says:
Implementations MUST NOT not add line feeds to base encoded data
unless the specification referring to this document explicitly
directs base encoders to add line feeds after a specific number of
In XML Schemas (http://www.w3.org/TR/xmlschema-2/#base64Binary) it says:
For compatibility with older mail gateways, [RFC 2045] suggests
that base64 data should have lines limited to at most 76 characters in
length. This line-length limitation is not mandated in the lexical
forms of base64Binary data and must not be enforced by XML Schema
JEP-0153: vCard-Based Avatars refers to RFC 2045 (Multipurpose
Internet Mail Extensions), and in Section 6.8 it says:
The encoded output stream must be represented in lines of no more
than 76 characters each. All line breaks or other characters not
found in Table 1 must be ignored by decoding software. In base64
data, characters other than those in Table 1, line breaks, and other
white space probably indicate a transmission error, about which a
warning message or even a message rejection might be appropriate
under some circumstances.
- Norman Rasmussen
- Email: norman at rasmussen.co.za
- Home page: http://norman.rasmussen.co.za/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 5019 bytes
Desc: not available
More information about the JDev