TURN                                 TURN          Peer         Peer
client                               server         A            B
  |--- Refresh request --------------->|            |            |
  |    Transaction-Id=0x0864B3C27ADE9354B4312414    |            |
  |    SOFTWARE="Example client 1.03"  |            |            |
  |    USERNAME="George"               |            |            |
  |    REALM="example.com"             |            |            |
  |    NONCE="oobMatJos2gAAAadl7W7PeDU4hKE72jda"    |            |
  |    PASSWORD-ALGORITHMS=MD5 and SHA256           |            |
  |    PASSWORD-ALGORITHM=SHA256       |            |            |  
  |    MESSAGE-INTEGRITY-SHA256=...    |            |            |
  |                                    |            |            |
  |<-- Refresh error response ---------|            |            |
  |    Transaction-Id=0x0864B3C27ADE9354B4312414    |            |
  |    SOFTWARE="Example server, version 1.17"      |            |
  |    ERROR-CODE=438 (Stale Nonce)    |            |            |
  |    REALM="example.com"             |            |            |
  |    NONCE="obMatJos2gAAAadl7W7PeDU4hKE72jda"     |            |
  |    PASSWORD-ALGORITHMS=MD5 and SHA256           |            |
  |                                    |            |            |
  |--- Refresh request --------------->|            |            |
  |    Transaction-Id=0x427BD3E625A85FC731DC4191    |            |
  |    SOFTWARE="Example client 1.03"  |            |            |
  |    USERNAME="George"               |            |            |
  |    REALM="example.com"             |            |            |
  |    NONCE="obMatJos2gAAAadl7W7PeDU4hKE72jda"     |            |
  |    PASSWORD-ALGORITHMS=MD5 and SHA256           |            |
  |    PASSWORD-ALGORITHM=SHA256       |            |            | 
  |    MESSAGE-INTEGRITY-SHA256=...    |            |            |
  |                                    |            |            |
  |<-- Refresh success response -------|            |            |
  |    Transaction-Id=0x427BD3E625A85FC731DC4191    |            |
  |    SOFTWARE="Example server, version 1.17"      |            |
  |    LIFETIME=600 (10 minutes)       |            |            |
  |    MESSAGE-INTEGRITY=...           |            |            |