+-----------+
     | Handshake |
     +-----+-----+
           |
           |
           v
     +-----+-----------+
     | Frame type byte |<----------------------------------------------+
     +-----+-----------+                                               |
           |                                                           |
           | 0x00 to 0x7F                  +-----------+    +------+   |
           +------------------------------>| UTF-8...  |--->| 0xFF |---+
           |                               +-----------+    +------+   |
           |                                                           |
           | 0x00 to 0x7F    +--------+    +-----------+               |
           +---------------->| Length |--->| Binary... |---------------+
                             +--------+    +-----------+


http://ditaa.org/ditaa/frames.html

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