EchoServer complete

main.go

@@ -1,7 +1,32 @@
 package main
 
-import "fmt"
+import (
+  "fmt"
+	"flag"
+	"os"
+)
 
+type Server interface {
+	Run()
+}
+	
 func main() {
-  fmt.Println("hello world")
+	var challenge int
+	flag.IntVar(&challenge, "challenge",1, "Challenge number")
+	flag.Parse()
+	
+	var port uint16 
+  port =	13370
+	var server Server
+  switch challenge {
+	  case 0:
+	  	server = NewEchoServer(port);
+		case 1:
+	  	server = NewPrimeServer(port);
+		default:
+			fmt.Printf("Unknown challenge\n")
+			os.Exit(1)
+		}
+	
+  server.Run()
 }