create struct for openflow1.0

src/main.rs

 use std::io::Read;
 use std::net::TcpListener;
 use tenjin::openflow::events::packet_in::PacketInEvent;
-use tenjin::openflow::{Controller, OfpMsg, OfpHeader};
+use tenjin::openflow::message::Openflow10;
+use tenjin::openflow::{Controller, OfpHeader, OfpMsg};
 
 extern crate byteorder;
 
 fn main() -> Result<(), std::io::Error> {
-    let mut controller = Controller::new(Controller::OFP_1_0);
+    let mut controller = Controller::new(Openflow10::new());
 
     let listener = TcpListener::bind(("127.0.0.1", 6633)).unwrap();
     let mut buf = vec![0u8; 8];

src/openflow/message.rs

@@ -14,7 +14,15 @@ pub enum OfpMsg {
     NotFound = -1,
 }
 
-impl OfpMsgEvent for OfpMsg {
+pub struct Openflow10 {}
+
+impl Openflow10 {
+    pub fn new() -> Self {
+        Openflow10 {}
+    }
+}
+
+impl OfpMsgEvent for Openflow10 {
     fn hello_event(&self) -> HelloEvent {
         HelloEvent::new()
     }