Merge PR #6450: Some small improve on API server

server/api/server.go

@@ -81,6 +81,11 @@ func (s *Server) Start(cfg config.Config) error {
 	return tmrpcserver.Serve(s.listener, s.Router, s.logger, tmCfg)
 }
 
+// Close closes the API server.
+func (s *Server) Close() error {
+	return s.listener.Close()
+}
+
 func (s *Server) registerSwaggerUI() {
 	statikFS, err := fs.New()
 	if err != nil {