Hi everyone,
we are currrently implementing a server/client system, the server
being implemented in c++, the client in java. During our last rounds
of tests, we encountered a problem that had to do with the sending of
(not so) long messages. on the (receiving) java side, we get the
following exception:
Exception in augnet.client.aim.connection.Receiver, Parse error:
com.google.protobuf.InvalidProtocolBufferException: Protocol message
contained an invalid tag (zero).
com.google.protobuf.InvalidProtocolBufferException: Protocol message
contained an invalid tag (zero).
at
com.google.protobuf.InvalidProtocolBufferException.invalidTag(InvalidProtocolBufferException.java:
52)
at com.google.protobuf.CodedInputStream.readTag(CodedInputStream.java:
67)
at com.google.protobuf.FieldSet.mergeFrom(FieldSet.java:397)
at com.google.protobuf.AbstractMessage
$Builder.mergeFrom(AbstractMessage.java:248)
at com.google.protobuf.GeneratedMessage
$Builder.mergeFrom(GeneratedMessage.java:1)
at
com.google.protobuf.CodedInputStream.readMessage(CodedInputStream.java:
227)
at com.google.protobuf.FieldSet.mergeFieldFrom(FieldSet.java:482)
at com.google.protobuf.FieldSet.mergeFrom(FieldSet.java:402)
at com.google.protobuf.AbstractMessage
$Builder.mergeFrom(AbstractMessage.java:248)
at com.google.protobuf.GeneratedMessage
$Builder.mergeFrom(GeneratedMessage.java:1)
at
com.google.protobuf.CodedInputStream.readMessage(CodedInputStream.java:
227)
at com.google.protobuf.FieldSet.mergeFieldFrom(FieldSet.java:482)
at com.google.protobuf.FieldSet.mergeFrom(FieldSet.java:402)
at com.google.protobuf.AbstractMessage
$Builder.mergeFrom(AbstractMessage.java:248)
at com.google.protobuf.AbstractMessage
$Builder.mergeFrom(AbstractMessage.java:240)
at com.google.protobuf.AbstractMessage
$Builder.mergeFrom(AbstractMessage.java:298)
at augnet.client.aim.messages.MessageProtos
$AugNetMessage.parseFrom(MessageProtos.java:6289)
at augnet.client.aim.connection.Receiver.run(Receiver.java:47)
while the (sending) c++ side encounters no errors. When we scale down
the message, no error occurs. Is this a bug in protobuf or are we
doing something wrong?
Best regards,
Dominik
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