Enum nng::options::MaxTtl

pub enum MaxTtl {}

The maximum number of “hops” a message may traverse.

The intention here is to prevent forwarding loops in device chains. Note that not all protocols support this option and those that do generally have a default value of 8.

Each node along a forwarding path may have its own value for the maximum time-to-live, and performs its own checks before forwarding a message. Therefore it is helpful if all nodes in the topology use the same value for this option.

Support

• Sockets can use this with the following protocols:
  • Pair v1
  • Rep v0
  • Req v0
  • Surveyor v0
  • Respondent v0
• Dialers and Listeners can retrieve it from their owning Socket, if applicable.

Trait Implementations

impl Clone for MaxTtl

fn clone(&self) -> MaxTtl

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MaxTtl

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

Formats the value using the given formatter.

impl Display for MaxTtl

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

Formats the value using the given formatter.

impl Hash for MaxTtl

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Opt for MaxTtl

type OptType = u8

The type that the option read and writes.

impl Ord for MaxTtl

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<MaxTtl> for MaxTtl

fn eq(&self, other: &MaxTtl) -> 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 !=.

impl PartialOrd<MaxTtl> for MaxTtl

fn partial_cmp(&self, other: &MaxTtl) -> 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 MaxTtl

impl Eq for MaxTtl

impl GetOpt<MaxTtl> for Dialer

impl GetOpt<MaxTtl> for DialerBuilder

impl GetOpt<MaxTtl> for Listener

impl GetOpt<MaxTtl> for ListenerBuilder

impl GetOpt<MaxTtl> for Socket

impl SetOpt<MaxTtl> for Socket

impl StructuralEq for MaxTtl

impl StructuralPartialEq for MaxTtl