diff --git a/config.go b/config.go
index b3e842c..2835c8e 100644
--- a/config.go
+++ b/config.go
@@ -9,7 +9,6 @@ import (
 type AppConfig struct {
 	Rpn struct {
 		Url         string `json:Url`
-		UrlTest     string `json:UrlTest`
 		MD5P2P      string `json:MD5P2P`
 		MD5FAT      string `json:MD5FAT`
 		MIDP2P      string `json:MIDP2P`
diff --git a/main.go b/main.go
index f6d07c6..23606f9 100644
--- a/main.go
+++ b/main.go
@@ -9,18 +9,20 @@ import (
 )
 
 func main() {
-	readConfig()
-	//readConfigForTest()
 	db.h = nil //make sure it's in proper state.
 
-	filename := "rpn.superforex." + time.Now().Format("20060102150406") + ".log"
+	//setup log file
+	filename := "logs/rpn.superforex." + time.Now().Format("2006-01-02-15-04-06") + ".log"
 	f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
 	if err != nil {
-		log.Fatalf("error opening file: %v", err)
+		log.Fatalf("Error opening file: %v", err)
 	}
 	defer f.Close()
 	log.SetOutput(f)
-	log.Println("Server started on: http://localhost:8080")
+
+	//Read Config
+	readConfig()
+	//readConfigForTest()
 
 	//setup http handler
 	http.HandleFunc("/rpnNameAndCard", rpnNameAndCard)   //ask name and card no
@@ -28,10 +30,12 @@ func main() {
 	http.HandleFunc("/alipay", leanworkInFAT)            // leanwork in
 	fs := wrapHandler(http.FileServer(http.Dir("./PG"))) //leanwork P2P embeded in
 	http.HandleFunc("/", fs)
-	http.ListenAndServe(":8080", nil)
 
-	//start log file
+	//start listening
+	log.Println("Server started on: http://localhost:8080")
+	http.ListenAndServe(Config.Server.Host+":"+Config.Server.Port, nil)
 
+	//program never reach here.
 }
 
 func errPage(w http.ResponseWriter, code int, msg string) {
diff --git a/rpnIn.go b/rpnIn.go
index 7a11d90..07e5286 100644
--- a/rpnIn.go
+++ b/rpnIn.go
@@ -118,7 +118,7 @@ func (m *RpnIn) signature() (sig string) {
 	s += "|pay_result=" + m.Pay_result
 	s += "|key=" + m.md5key()
 	sig = md5str(s)
-	log.Println("signature of rpnIn = " + sig + " using key " + m.md5key())
+	//log.Println("signature of rpnIn = " + sig + " using key " + m.md5key())
 	return
 }