def from_stream(body):
# Parse the TLS Record
content_type, version_major, version_minor, length = (
struct.unpack_from("!BBBH", body, 0))
fragment = body[5:5 + length]
# Sanity check
if length != len(fragment):
raise ValueError("Not enough data in fragment")
# Check this is a Handshake message
type = TlsRecord.type_map.get(content_type, OpaqueFragment)
objs = []
if fragment == "":
obj, size = type.from_stream(fragment)
objs.append(obj)
while fragment != "":
obj, size = type.from_stream(fragment)
objs.append(obj)
fragment = fragment[size:]
return TlsRecord(content_type, Version(version_major, version_minor),
objs), 5 + length
