fix center handle ssn after node restart.

lichao

2021-04-26 150e192a7ddf19783a0f4a81b87d270c0812277a

 .gitignore

@@ -9,4 +9,5 @@
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
*/bhshmq_status
.idea