Enum toad_msg::OptionMustBeProcessed

pub enum OptionMustBeProcessed {
    Yes,
    No,
}

Critical/Elective

generated from RFC7252 section 5.4.1

Options fall into one of two classes: “critical” or “elective”. The difference between these is how an option unrecognized by an endpoint is handled:

o Upon reception, unrecognized options of class “elective” MUST be silently ignored.

o Unrecognized options of class “critical” that occur in a Confirmable request MUST cause the return of a 4.02 (Bad Option) response. This response SHOULD include a diagnostic payload describing the unrecognized option(s) (see Section 5.5.2).

o Unrecognized options of class “critical” that occur in a Confirmable response, or piggybacked in an Acknowledgement, MUST cause the response to be rejected (Section 4.2).

o Unrecognized options of class “critical” that occur in a Non- confirmable message MUST cause the message to be rejected (Section 4.3).

Note that, whether critical or elective, an option is never “mandatory” (it is always optional): these rules are defined in order to enable implementations to stop processing options they do not understand or implement.

Critical/elective rules apply to non-proxying endpoints. A proxy processes options based on Unsafe/Safe-to-Forward classes as defined in Section 5.7.

Variants

Yes

This option must be processed, and a response that ignores it will be rejected.

Corresponds to the option being “critical” in strict CoAP terms

No

This option does not need to be processed, and a response that ignores it will be processed anyway.

Corresponds to the option being “elective” in strict CoAP terms

Trait Implementations

impl Clone for OptionMustBeProcessed

fn clone(&self) -> OptionMustBeProcessed

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OptionMustBeProcessed

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

Formats the value using the given formatter.

impl Ord for OptionMustBeProcessed

fn cmp(&self, other: &OptionMustBeProcessed) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<OptionMustBeProcessed> for OptionMustBeProcessed

fn eq(&self, other: &OptionMustBeProcessed) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<OptionMustBeProcessed> for OptionMustBeProcessed

fn partial_cmp(&self, other: &OptionMustBeProcessed) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for OptionMustBeProcessed

impl Eq for OptionMustBeProcessed

impl StructuralEq for OptionMustBeProcessed

impl StructuralPartialEq for OptionMustBeProcessed