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Diff for /src/usr.bin/ssh/PROTOCOL between version 1.39 and 1.40

version 1.39, 2021/02/12 03:49:09 version 1.40, 2021/02/18 00:30:17
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 This extension is advertised in the SSH_FXP_VERSION hello with version  This extension is advertised in the SSH_FXP_VERSION hello with version
 "1".  "1".
   
   3.8. sftp: Extension request "limits@openssh.com"
   
   This request is used to determine various limits the server might impose.
   Clients should not attempt to exceed these limits as the server might sever
   the connection immediately.
   
           uint32          id
           string          "limits@openssh.com"
   
   The server will respond with a SSH_FXP_EXTENDED_REPLY reply:
   
           uint32          id
           uint64          max-packet-length
           uint64          max-read-length
           uint64          max-write-length
           uint64          max-open-handles
   
   The 'max-packet-length' applies to the total number of bytes in a
   single SFTP packet.  Servers SHOULD set this at least to 34000.
   
   The 'max-read-length' is the largest length in a SSH_FXP_READ packet.
   Even if the client requests a larger size, servers will usually respond
   with a shorter SSH_FXP_DATA packet.  Servers SHOULD set this at least to
   32768.
   
   The 'max-write-length' is the largest length in a SSH_FXP_WRITE packet
   the server will accept.  Servers SHOULD set this at least to 32768.
   
   The 'max-open-handles' is the maximum number of active handles that the
   server allows (e.g. handles created by SSH_FXP_OPEN and SSH_FXP_OPENDIR
   packets).  Servers MAY count internal file handles against this limit
   (e.g. system logging or stdout/stderr), so clients SHOULD NOT expect to
   open this many handles in practice.
   
   If the server doesn't enforce a specific limit, then the field may be
   set to 0.  This implies the server relies on the OS to enforce limits
   (e.g. available memory or file handles), and such limits might be
   dynamic.  The client SHOULD take care to not try to exceed reasonable
   limits.
   
   This extension is advertised in the SSH_FXP_VERSION hello with version
   "1".
   
 4. Miscellaneous changes  4. Miscellaneous changes
   
 4.1 Public key format  4.1 Public key format
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Removed from v.1.39  
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  Added in v.1.40