def decode(self, data):
#print('index= ' + str(self.index))
length = util.getInt(data[self.index:self.index+4]) & 0xffffffff
self.index += 4
doff = util.getByte(data,self.index) & 0xff
self.index += 1
type = util.getByte(data,self.index) & 0xff
self.index += 1
channel = util.getShort(data[self.index:self.index+2]) & 0xffff
self.index += 2
if length == 8 and doff == 2 and (type == 0 or type == 1) and channel == 0:
if self.index >= len(data):
self.index = 0
return AMQPPing()
else:
raise ValueError("Received malformed ping-header with invalid length")
if length == 1095586128 and (doff == 3 or doff == 0) and type == 1 and channel == 0:
if self.index >= len(data):
self.index = 0
return AMQPProtoHeader(doff)
else:
raise ValueError("Received malformed protocol-header with invalid length")
header = None
headerFactory = HeaderFactory(self.index)
if type == 0:
header = headerFactory.getAMQP(data)
elif type == 1:
header = headerFactory.getSASL(data)
else:
raise ValueError("Received malformed header with invalid type: " + type)
self.index = headerFactory.getIndex()
if isinstance(header, AMQPHeader):
header.setDoff(doff)
header.setType(type)
header.setChannel(channel)
if header.getCode() == HeaderCode.TRANSFER:
if isinstance(header,AMQPTransfer):
header.setSections({})
while self.index < len(data):
headerFactory.setIndex(self.index)
section = headerFactory.getSection(data)
header.sections[section.getCode()] = section
self.index = headerFactory.getIndex()
self.index = 0
return header
def unwrapShort(self, tlv):
if isinstance(tlv, TLVAmqp):
if tlv.getCode() != AMQPType.SHORT:
raise ValueError('Error trying to parse SHORT: received ' +
str(tlv.getCode()))
return util.getShort(tlv.getValue())
def getShort(self):
return util.getShort(self.value)