feat: server.Conn 支持通过 GetServer 获取到服务器实例

server/conn.go

@@ -127,6 +127,11 @@ type connection struct {
 	mu         sync.Mutex
 }
 
+// GetServer 获取服务器
+func (slf *Conn) GetServer() *Server {
+	return slf.server
+}
+
 // GetWebsocketRequest 获取websocket请求
 func (slf *Conn) GetWebsocketRequest() *http.Request {
 	return slf.GetData(wsRequestKey).(*http.Request)