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.
- 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.
Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
The type that the option read and writes.
#[must_use]
pub fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
#[must_use]
pub fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
#[must_use]
pub fn clamp(self, min: Self, max: Self) -> Self
1.50.0[src]
Restrict a value to a certain interval. Read more
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
#[must_use]
pub fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests for !=
.
This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]
pub fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]
pub fn le(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
#[must_use]
pub fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
#[must_use]
pub fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl<T> Any for T where
T: 'static + ?Sized,
[src]
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
impl<T, U> Into<U> for T where
U: From<T>,
[src]
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String
. Read more
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.