调用的结果

对未准备好发送或不再打开的套接字的调用可能会抛出 Not running Error。

如果无法将 multicastInterface 解析为 IP，则抛出 EINVAL System Error。

在 IPv4 上，如果 multicastInterface 是有效地址但与任何接口都不匹配，或者如果地址与系列不匹配，则抛出 System Error，例如 EADDRNOTAVAIL 或 EPROTONOSUP。

在 IPv6 上，大多数指定或省略范围的错误将导致套接字继续使用（或返回）系统的默认接口选择。

套接字地址族的任何地址（IPv4 '0.0.0.0' 或 IPv6 '::'）可用于将套接字默认传出接口的控制权返回给系统，以便将来使用多播数据包。

A call on a socket that is not ready to send or no longer open may throw a Not running Error.

If multicastInterface can not be parsed into an IP then an EINVAL System Error is thrown.

On IPv4, if multicastInterface is a valid address but does not match any interface, or if the address does not match the family then a System Error such as EADDRNOTAVAIL or EPROTONOSUP is thrown.

On IPv6, most errors with specifying or omitting scope will result in the socket continuing to use (or returning to) the system's default interface selection.

A socket's address family's ANY address (IPv4 '0.0.0.0' or IPv6 '::') can be used to return control of the sockets default outgoing interface to the system for future multicast packets.