It checks the end group tag 4 which should be deprecated.

https://developers.google.com/protocol-buffers/docs/encoding#structure

On Mon, Mar 14, 2016 at 6:41 PM, Lim Wei Chiang <[email protected]> wrote:

> Hi Jie Luo,
>
> What does the error denote, what should I be checking for?
>
> The link you sent has a typo I believe.
>
> Thanks for any advice.
>
>
> On Tuesday, 15 March 2016, Jie Luo <[email protected]> wrote:
>
>> We are going to change the c++ implementation to the same behavior
>> with pure python which will raise 'Unexpected end-group tag.' too.
>> Please see http://b/27494216
>>
>> On Sat, Mar 12, 2016 at 11:46 PM, Wei Chiang Lim <[email protected]>
>> wrote:
>> > Hi all
>> >
>> > I'm trying parse protobuf messages subscribed from a zeromq feed using
>> > Python. Intermittently when I parse the message string, my script
>> crashes
>> > with the following error
>> >
>> >   File "ale-feed-location-reader.py", line 37, in <module>
>> >
>> >     aleEvent.ParseFromString(recvMsg)
>> >
>> >   File "/usr/lib/python2.7/dist-packages/google/protobuf/message.py",
>> line
>> > 182, in ParseFromString
>> >
>> >     self.MergeFromString(serialized)
>> >
>> >   File
>> >
>> "/usr/lib/python2.7/dist-packages/google/protobuf/internal/python_message.py",
>> > line 798, in MergeFromString
>> >
>> >     raise message_mod.DecodeError('Unexpected end-group tag.')
>> >
>> > google.protobuf.message.DecodeError: Unexpected end-group tag.
>> >
>> >
>> > My script looks like the following, seems fairly simple enough. Has
>> anyone
>> > seen this before, and how would you fix this? My guess is that it is
>> not any
>> > corruption on the message from the zmq server, as a vendor provided c++
>> > compiled program is able to parse the messages without any problem.
>> >
>> > ----------snip----------
>> > # Socket to talk to server
>> > context = zmq.Context()
>> > clientSock = context.socket(zmq.SUB)
>> > clientSock.connect ("tcp://%s:%s" % (serverAddr, serverPort))
>> > print('Connected to {0} at port {1}'.format(serverAddr, serverPort))
>> >
>> > topicfilter = ""
>> > clientSock.setsockopt(zmq.SUBSCRIBE, topicfilter)
>> >
>> > while(1):
>> > # Receive Message
>> > recvMsg = ''.join(clientSock.recv_multipart())
>> > # Parse Message
>> > aleEvent = schema_pb2.nb_event()
>> > aleEvent.ParseFromString(recvMsg)
>> > if aleEvent.IsInitialized():
>> > time = datetime.datetime.fromtimestamp(aleEvent.timestamp)
>> > ----------snip----------
>> >
>> > Thanks for any insight!
>> >
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>
>
> --
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>

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