Set the default time-to-live for multicast packets sent out on this MulticastSocket in order to control the scope of the multicasts.

设置在此多播套接字发出的多播包的默认存活时间以便控制多播的作用域。

youdao

Set the default time-to-live for multicast packets sent out on this MulticastSocket in order to control the scope of the multicasts.

设置在此多播套接字发出的多播包的默认存活时间以便控制多播的作用域。

youdao