TURN                                 TURN          Peer         Peer
client                               server         A            B
  |--- ChannelBind request ----------->|            |            |
  |    Transaction-Id=0xE5913A8F46091637EF7D3328    |            |
  |    CHANNEL-NUMBER=0x4000           |            |            |
  |    XOR-PEER-ADDRESS=192.0.2.210:49191           |            |
  |    USERNAME="George"               |            |            |
  |    REALM="example.com"             |            |            |
  |    NONCE="obMatJos2gAAAadl7W7PeDU4hKE72jda"     |            |
  |    PASSWORD-ALGORITHMS=MD5 and SHA256           |            |
  |    PASSWORD-ALGORITHM=SHA256       |            |            |  
  |    MESSAGE-INTEGRITY-SHA256=...    |            |            |
  |                                    |            |            |
  |<-- ChannelBind success response ---|            |            |
  |    Transaction-Id=0xE5913A8F46091637EF7D3328    |            |
  |    MESSAGE-INTEGRITY-SHA256=...    |            |            |