Trait netstack3_ip::socket::SendOptions

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pub trait SendOptions<I: IpExt> {
    // Required methods
    fn hop_limit(
        &self,
        destination: &SpecifiedAddr<I::Addr>,
    ) -> Option<NonZeroU8>;
    fn multicast_loop(&self) -> bool;
    fn allow_broadcast(&self) -> Option<I::BroadcastMarker>;
    fn dscp_and_ecn(&self) -> DscpAndEcn;
    fn mtu(&self) -> Mtu;
}

Expand description

Provides hooks for altering sending behavior of IpSock.

Must be implemented by the socket option type of an IpSock when using it to call IpSocketHandler::send_ip_packet. This is implemented as a trait instead of an inherent impl on a type so that users of sockets that don’t need certain option types, like TCP for anything multicast-related, can avoid allocating space for those options.

Required Methods§

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fn hop_limit(&self, destination: &SpecifiedAddr<I::Addr>) -> Option<NonZeroU8>

Returns the hop limit to set on a packet going to the given destination.

If Some(u), u will be used as the hop limit (IPv6) or TTL (IPv4) for a packet going to the given destination. Otherwise the default value will be used.

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