When sending multiple LEAP packets in the same file (for testing convenience),
use a length prefix instead of delimiting with '\n'. Now that we allow a
serialization format that includes an LLSD format header (e.g.
"<?llsd/binary?>"), '\n' is part of the packet content. But in fact, testing
binary LLSD means we can't pick any delimiter guaranteed not to appear in the
packet content.
Using a length prefix also lets us pass a specific max_bytes to the subject
C++ LLSD parser.
Make llleap_test.cpp use new freestanding Python llsd package when available.
Update Python-side LEAP protocol code to work directly with encoded bytes
stream, avoiding bytes<->str encoding and decoding, which breaks binary LLSD.
Make LLSDSerialize::deserialize() recognize LLSD format header case-
insensitively. Python emits and checks for "llsd/binary", while LLSDSerialize
emits and checks for "LLSD/Binary". Once any of the headers is recognized,
pass corrected max_bytes to the specific parser.
Make deserialize() more careful about the no-header case: preserve '\n' in
content. Introduce debugging code (disabled) because it's a little tricky to
recreate.
Revert LLLeap child process stdout parser from LLSDSerialize::deserialize() to
the specific LLSDNotationParser(), as at present: the generic parser fails one
of LLLeap's integration tests for reasons that remain mysterious.
2f557cd7fa