gnet: 优化重连性能

v4/gnet/net.go

@@ -66,7 +66,7 @@ type Config struct {
 	WriteTimeout time.Duration
 	Timeout      time.Duration // Read and Write
 	DialTimeout  time.Duration
-
+	
 	Reconnect   bool // Reconnect 自动重连. 仅用于客户端
 	IgnoreError bool // IgnoreError 忽略首次连接时失败的错误, 用于 Reconnect 启用时. 仅用于客户端
 	MuxBuff     int  // ReadMultiplexer.ReadMux Only
@@ -102,11 +102,11 @@ func optimizationConn(conn net.Conn) net.Conn {
 type tcpAliveConn struct {
 	address string
 	net.Conn
-
+	
 	Config *Config
 	buf    []byte
 	mu     sync.Mutex
-
+	
 	handing bool
 	closed  bool
 }
@@ -165,11 +165,12 @@ func (t *tcpAliveConn) handleAlive() {
 	}
 	for !t.closed {
 		if !t.hasAvailableNetFace() {
-			time.Sleep(3 * time.Second)
+			time.Sleep(DialTimout)
 			continue
 		}
 		conn, err := t.Dial(t.address, t.Config.DialTimeout)
 		if err != nil {
+			time.Sleep(DialTimout)
 			continue
 		}
 		t.mu.Lock()