com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero)

[mancha]

Hi,
When dequeing the message using a Java client, the get the
following error. I am sending the data from a c++ server.
com.google.protobuf.InvalidProtocolBufferException: Protocol
message contained an invalid tag (zero)

I verified that the byte pattern on enqueuing from the c++ client
is the same as the byte pattern I am sending to
SComm.PositionUpdate.parseFrom(one_buf); in Java.
The byte pattern in one_buf is 10 3 86 79 68

and the class is ofcourse PositionUpdate with an outer class name
SComm.

How do I debug this further?

Any help is appreciated.

Thanks,
Madhav.

[Daniel Wright]

Can you try to produce a stripped-down example (e.g. a proto file and a *short* stripped-down .java file) that exhibits the problem?  The byte pattern in your email does look valid to me, so there's more likely some issue where that isn't really what the protocol buffer code is seeing for some reason.

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[Madhav Ancha]

Hi Daniel,

   The protocol buffer code is working fine. It was a cryptic marshaling issue. Its resolved now. 

Thanks,

Madhav.