def _yield_messages(self, sock):
try:
buffer = UnpackableBuffer()
chunk_loader = self._load_chunks(sock, buffer)
unpacker = Unpacker(buffer)
details = []
while True:
unpacker.reset()
details[:] = ()
chunk_size = -1
while chunk_size != 0:
chunk_size = next(chunk_loader)
summary_signature = None
summary_metadata = None
size, signature = unpacker.unpack_structure_header()
if size > 1:
raise ProtocolError("Expected one field")
if signature == b"\x71":
data = unpacker.unpack()
details.append(data)
else:
summary_signature = signature
summary_metadata = unpacker.unpack_map()
yield details, summary_signature, summary_metadata
except OSError as error:
self.on_error(error)