您好：

1. deep sleep睡眠时 CPU 与 SRAM 均掉电，唤醒后 CPU 需要重新初始化 wiif，睡眠后连接会断开。
2. 连接是一个双方验证的过程，超时断开后连接信息会废弃，保持一方的连接参数信息没有意义。所以仅仅保存路由器的信道可以加速连接，并无方法维持上一次连接。

Hi, the current mesh network can freely transmit data, and it does not limit whether it belongs to audio data.

Hi
1. It is recommended that you use esp-mdf sdk to learn the mesh function.
2. Modified your code, it can be successfully compiled on esp-idf master.

thanks.