finish OTP code

main.go

@@ -4,8 +4,10 @@ import (
 	"flag"
 	"log"
 	"log/syslog"
+	"math/rand"
 	"os"
 	"strings"
+	"time"
 
 	"github.com/pyke369/golang-support/uconfig"
 )
@@ -24,6 +26,9 @@ func main() {
 		os.Exit(1)
 	}
 
+	// seed the prng
+	rand.Seed(time.Now().UnixNano())
+
 	server := NewVPNServer(config.GetString("config.openvpnPort", "127.0.0.01:5000"))
 	server.vpnlogUrl = config.GetString("config.vpnLogUrl", "")
 	server.mailRelay = config.GetString("config.mailRelay", "")