Struct OptionView 

pub struct OptionView<'a>(/* private fields */);

Zero-copy view into a variable-length SD option in a buffer.

Wire layout:

• [0..2]: length (u16 BE) = total_size - 3
• [2]: option type (u8)
• [3]: reserved/discard flag (u8)
• [4..]: type-specific data

Implementations

impl<'a> OptionView<'a>

pub fn option_type(&self) -> Result<OptionType, Error>

Returns the option type.

Errors

Returns Error::InvalidOptionType if the type byte is unrecognized.

pub fn wire_size(&self) -> usize

Total wire size of this option (length field value + 3).

pub fn as_ipv4(&self) -> Result<(Ipv4Addr, TransportProtocol, u16), Error>

Parse as IPv4 endpoint/multicast/SD option. Returns (ip, protocol, port).

Errors

Returns Error::InvalidOptionTransportProtocol if the protocol byte is unrecognized.

pub fn as_ipv6(&self) -> Result<(Ipv6Addr, TransportProtocol, u16), Error>

Parse as IPv6 endpoint/multicast/SD option. Returns (ip, protocol, port).

Errors

Returns Error::InvalidOptionTransportProtocol if the protocol byte is unrecognized.

pub fn configuration_bytes(&self) -> &'a [u8]

Raw configuration bytes (for Configuration options).

pub fn as_load_balancing(&self) -> Result<(u16, u16), Error>

Parse as load-balancing option. Returns (priority, weight).

Errors

Currently always succeeds; the Result return type is reserved for future validation.

pub fn to_owned(&self) -> Result<Options, Error>

Converts this view into an owned Options.

Errors

Returns an error if the option type is unrecognized, the transport protocol byte is invalid, or the configuration string exceeds MAX_CONFIGURATION_STRING_LENGTH.

Panics

Panics if a configuration string passes the length check but fails to fit into the heapless buffer (unreachable in practice).

Trait Implementations

impl<'a> Clone for OptionView<'a>

fn clone(&self) -> OptionView<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for OptionView<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Copy for OptionView<'a>