more logging and make threadpool config working

src/server.rs

@@ -41,8 +41,7 @@ impl FlowgateServer {
     pub fn start(self) -> ThreadPool {
         let local_self = Arc::new(self);
 
-        // let threadpool = ThreadPool::new(local_self.config.threadpool_size);
+        let threadpool = ThreadPool::new(local_self.config.threadpool_size);
-        let threadpool = ThreadPool::new(3);
 
         let mut handles = Vec::new();
 
@@ -88,6 +87,8 @@ impl FlowgateServer {
                             addr,
                             false
                         );
+                        
+                        debug!("{} close connection", addr);
                     });
                 }
             }
@@ -125,10 +126,10 @@ impl FlowgateServer {
                             &mut stream,
                             addr,
                             true
-                        ).map(|_| {
+                        );
+
                         debug!("{} close connection", addr);
                     });
-                    });
                 }
             }
         }