Libstrophe doesn't override memory allocation functions in XML libraries
and default allocators are used as result.
Current patch solves this issue partially for expat module. The module
caches 1st strophe context and overrides expat's allocator for parsers
within this context. For all other contexts, fallback to default
allocator.
This is modified version of solution from UnrealEngine project.
@curse666 suggested solution for #46 which reduces memory usage in expat
module. Current patch fixes few issues:
- Inner text is lost for depth 1 stanzas
- Incorrect handling of mixed xml <x>text<y/></x>
- Reduced number of realloc() calls
The use of 0xff as a separator for libexpat only works on arch where
char is defined as an unsigned char. This is an unportable behaviour.
Before this patch this is what I experienced:
xmpp DEBUG sock_connect to im.bouledef.eu:5222 returned 3
xmpp DEBUG attempting to connect to im.bouledef.eu
xmpp DEBUG connection successful
conn DEBUG SENT: <?xml version="1.0"?><stream:stream to="bouledef.eu" xml:lang="en" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams">
conn ERROR Server did not open valid stream.
xmpp DEBUG Closing socket.
DEBUG: disconnected
event DEBUG Stopping event loop.
xmpp DEBUG RECV: <http://etherx.jabber.org/streamsÿfeatures><urn:ietf:params:xml:ns:xmpp-tlsÿstarttls><urn:ietf:params:xml:ns:xmpp-tlsÿrequired/></urn:ietf:params:xml:ns:xmpp-tlsÿstarttls></http://etherx.jabber.org/streamsÿfeatures>
event DEBUG Event loop completed.
name = http://etherx.jabber.org/streamsÿstream
expat is still the default parser, but libxml2 can also be used
via an option to the configure script. New parsers can easily be
added by implementing a parser_foo.c that uses the interface defined
in parser.h.
