Huh? This is an entirely different serialization format altogether.

Just stick this in front of your frames:

    81 A2 70 62 C6 <32 bit be length> <protobuf data>

You got me. What's that format / magic number? At first I thought it was the zlib header for incompressible data, but that's not right. Is that just the MAC address of some NIC you own?

It's msgpack:

0x8n A map containing "n" key/value pairs -> 0x81 introduces a single key/value pair

b101XXXXX : A string where XXXXX is the string length -> 0xA2 introudces a 2 byte string

0xC6 followed by a 32-bit value N introduces an array of bytes of size N

0x70 0x62 "pb"

So it roughly corresponds to

  {"pb": <protobuf data> }

Poster is being cute.

Create a MessagePack message containing a byte array, put the protobuf in that. Of course, the enterprise solution would be to hex encode it and put it in a CDATA section in an XML document.

Doesn't have a Brainf*k implementation, disqualified.

/s