Sorry for late Reply....
I have started to work on ESP_MESH_DEMO firmware which is released to create MESH network between multiple ESP Nodes.
Right Now, I have checked it with 2 ESP-WROOM-02 nodes in which one node becomes as Root node and second node becomes as leaf node which tries to communcate with the Root Node and started comminications with each other.
I have also started server python script in one of my Linux System and also updated user_config.h header file based on local server configuratiuon and also updated same for Router configuration.
Now, I will test with bunch of ESP-WROOM-02 nodes and also will try to look code once everything works fine without any issue.
I am also working on something similar. I basically need to create a mesh in which one node acts as a root node while the rest as leaf or child nodes. Have you found anything useful in this regard?