27 Feb
2012
27 Feb
'12
3:41 p.m.
2012/2/27 Daniel-Constantin Mierla <daniel(a)kamailio.org>rg>:
However, there is a mismatching between the xml
standards and SIP/SIMPLE
specs. In XML, the namespaces are bound to prefixes, while the guys at IETF
added by their own so called default namespace, which has no prefix for it.
That results in not being able to use directly xpath from libxml2 with
SIMPLE bodies.
There were some discussions out there (you can google, iirc Inaki was in
couple of them), in one side, the devs of libxml2 said they don't want to
break XML standards by allowing bogus xpath queries with such namespaces.
Right. IETF SIMPLE group decided to break xpath 1.0 compatibility
(what libxml2 implements) to save just a fews bytes in the XML !
Really annoying.
Some time ago I did an ugly workaround in a C project to "fix" it.
What Daniel suggests is similar and unfortunately is the way to go in
this century.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>