修改默认rt

vnt/src/channel/context.rs

@@ -324,7 +324,16 @@ impl RouteTable {
             } else {
                 let len = v.len();
                 if len != 0 {
-                    return Ok(v[index % len].0);
+                    let route = &v[index % len].0;
+                    // 跳过默认rt的路由(一般是刚加入的)，这有助于提升稳定性
+                    if route.rt != DEFAULT_RT {
+                        return Ok(*route);
+                    }
+                    for (route, _) in v {
+                        if route.rt != DEFAULT_RT {
+                            return Ok(*route);
+                        }
+                    }
                 }
             }
         }

vnt/src/channel/mod.rs

@@ -68,7 +68,7 @@ pub struct RouteSortKey {
     pub metric: u8,
     pub rt: i64,
 }
-const DEFAULT_RT: i64 = 999;
+const DEFAULT_RT: i64 = 9999;
 impl Route {
     pub fn new(is_tcp: bool, index: usize, addr: SocketAddr, metric: u8, rt: i64) -> Self {
         Self {