func ping(args []string, c *client.Client) {
host := ""
if len(args) > 1 {
log.Fatalf("Unknown args for ping: %v", args[1:])
}
if len(args) == 1 {
var err error
host, err = utils.ValidateAddr(args[0])
if err != nil {
log.Fatalf("%v", err)
}
}
startTime := time.Now()
log.Printf("Connection took %v", time.Since(startTime))
value := make([]byte, 16)
rand.Read(value)
echoTime := time.Now()
result, err := c.Echo(value, host)
if err != nil {
log.Fatalf("client.Echo failed: %v", err)
}
if !bytes.Equal(value, result) {
log.Fatalf("Incorrect response from echo")
}
log.Printf("Reply took %v: %v", time.Since(echoTime), result)
// milliseconds
fmt.Printf("%f\n", float64(time.Since(startTime))/1000000)
}
