Automated Network Validation Library

 This can bind to a certain port and will receive UDP packets. I don’t know UDP well enough to fully validate this tool, but it does appear to be able to receive encoded commands via UDP. The output from the this command is only seen directly on the console.

filer1*> anvl 27
OS_CALL –> OSSockSocket(sType == 2) OK
OS_CALL –> OSSockBind(sock == 2998462968, port == 27) OK
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL

OS_CALL –> OSSockRecvFrom  recvfrom ret 4 errno 2
anvl OSSockRecvFrom 4
DEBUG –> Received command [df
] from ANVL

—>Start UDP Control Message decode
No message decode for this message
type=df
  command =df

Probably this is a new message for which decode
has not been coded
Modify MessageDecode
—>End UDP Control Message decode
—>Start UDP Control Message ACK
Sending 4~~~~~~~~~~~~~~~~~
OS_CALL –> OSSockSendTo: 18 bytes sent.
OS_CALL –> OSSockSendTo(sock == 2998462968) OK
—>End UDP Control Message ACK

Unknown command :: 0
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL
OS_CALL –> OSSockRecvFrom  recvfrom ret 4 errno 2
anvl OSSockRecvFrom 4
DEBUG –> Received command [df
] from ANVL

—>Start UDP Control Message decode
No message decode for this message
type=df
  command =df

Probably this is a new message for which decode
has not been coded
Modify MessageDecode
—>End UDP Control Message decode
—>Start UDP Control Message ACK
Sending 4~~~~~~~~~~~~~~~~~
OS_CALL –> OSSockSendTo: 18 bytes sent.
OS_CALL –> OSSockSendTo(sock == 2998462968) OK
—>End UDP Control Message ACK

Unknown command :: 0
Ready to receive UDP request on port 27
DEBUG –> Blocked to receive command from ANVL