remove closeable and more ignore trait!!!

src/flowgate/server.rs

@@ -29,16 +29,6 @@ pub struct FlowgateServer {
     config: Arc<RwLock<Config>>,
 }
 
-pub trait Closeable {
-    fn close(&mut self);
-}
-
-impl Closeable for TcpStream {
-    fn close(&mut self) {
-        let _ = self.shutdown();
-    }
-}
-
 struct Connection {
     stream: TcpStream, 
     config: SiteConfig,
@@ -146,14 +136,14 @@ impl FlowgateServer {
         if conn.keep_alive && conn.config.enable_keep_alive {
             loop {
                 if !conn.config.support_keep_alive {
-                    conn.stream.close();
+                    conn.stream.shutdown().await.ignore();
                     conn.stream = conn.config.connect().await?;
                 }
                 conn = read_request(config.clone(), stream, addr, https, Some(conn)).await?;
             }
         }
 
-        conn.stream.close();
+        conn.stream.shutdown().await.ignore();
         stream.shutdown().await.ok()?;
 
         Some(())