Protocol Question

[Heath Ivie]

Hi,

I am trying to navigate through the protocol and I am seeing some 
inconsistencies with the data.

I am trying to parse out the MetadataResponse and I am seeing bytes in between 
where they shouldn't be.

I know they are extra, because if I up the offset the data after is correct.

Here is the part of the response that I am trying to parse:
MetadataResponse => [Broker][TopicMetadata]
  Broker => NodeId Host Port  (any number of brokers may be returned)
    NodeId => int32
    Host => string
    Port => int32
  TopicMetadata => TopicErrorCode TopicName [PartitionMetadata]
    TopicErrorCode => int16
  PartitionMetadata => PartitionErrorCode PartitionId Leader Replicas Isr
    PartitionErrorCode => int16
    PartitionId => int32
    Leader => int32
    Replicas => [int32]
    Isr => [int32]


I am seeing extra bytes after the topic error.

I am not sure if this padding is expected or not?

It may not be very readable, but here is my code (be nice :)).

int offset =0;
                    int correlationId = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;
                    int brokerCount = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;
                    int nodeId = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;
                    int hostNameLength = 
BitConverter.ToInt16(ReverseBytes(bytes.Skip(offset).Take(2).ToArray()), 0);
                    offset += 2;

                    string hostName = Encoding.ASCII.GetString(bytes, offset, 
hostNameLength);
                    offset += hostNameLength;

                    int port = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;

                    int topicErrorCode = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;

                    int topicNameLength = 
BitConverter.ToInt16(ReverseBytes(bytes.Skip(offset).Take(2).ToArray()), 0);
                    offset += 2;

                    string topicName = Encoding.ASCII.GetString(bytes, offset, 
topicNameLength);
                    offset += topicNameLength;

                    int partitionErrorCode = 
BitConverter.ToInt16(ReverseBytes(bytes.Skip(offset).Take(2).ToArray()), 0);
                    offset += 2;

                    int partitionId = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;

                    int leaderId = 
BitConverter.ToInt32(ReverseBytes(bytes.Skip(offset).Take(4).ToArray()), 0);
                    offset += 4;


Any help would be cool, thanks

Heath Ivie
Solutions Architect


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