Struct Listen &nbsp; Copy item path

impl Listen

pub fn new_none() -> Listen

Create a new Listen specifying no addresses (no listening)

pub fn new_localhost(port: u16) -> Listen

Create a new Listen specifying listening on a port on localhost

Special case: if port is zero, specifies no listening.

pub fn new_localhost_optional(port: Option<u16>) -> Listen

Create a new Listen, possibly specifying listening on a port on localhost

Special case: if port is Some(0), also specifies no listening.

pub fn is_empty(&self) -> bool

Return true if no listening addresses have been configured

pub fn using_auto(&self) -> bool

Return true if there are any “auto” addresses in this Listen.

pub fn using_port_zero(&self) -> bool

Return true if there are any port-zero addresses in this Listen.

pub fn ip_addrs( &self, ) -> Result<impl Iterator<Item = impl Iterator<Item = SocketAddr>>, ListenUnsupported>

List the network socket addresses to listen on

Each returned item is a list of SocketAddr, of which at least one must be successfully bound. It is OK if the others (up to all but one of them) fail with EAFNOSUPPORT (“Address family not supported”). This allows handling of support, or non-support, for particular address families, eg IPv6 vs IPv4 localhost. Other errors (eg, EADDRINUSE) should always be treated as serious problems.

Fails if the listen spec involves listening on things other than IP addresses. (Currently that is not possible.)

pub fn localhost_port_legacy(&self) -> Result<Option<u16>, ListenUnsupported>

👎Deprecated since 0.38.0

Get the localhost port to listen on

Returns None if listening is configured to be disabled.

Fails, giving an unsupported error, if the configuration isn’t just “listen on a single localhost port in all address families”

pub fn single_address_legacy( &self, ) -> Result<Option<SocketAddr>, ListenUnsupported>

Get a single address to listen on

Returns None if listening is configured to be disabled.

If the configuration is “listen on a single port”, treats this as a request to listening on IPv4 only. Use of this function implies a bug: lack of proper support for the current internet protocol IPv6. It should only be used if an underlying library or facility is likewise buggy.

Fails, giving an unsupported error, if the configuration isn’t just “listen on a single port on one address family”.

pub fn is_loopback_only(&self) -> bool

Return true if this Listen only configures listening on loopback addresses (127.0.0.0/8 and ::1).

Returns true if there are no addresses configured.

pub fn is_localhost_only(&self) -> bool

👎Deprecated since 0.37.0: please use is_loopback_only instead

Deprecated. Use Self::is_loopback_only instead, which behaves the same but has the correct method name.

Trait Implementations§

impl Clone for Listen

fn clone(&self) -> Listen

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for Listen

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

Formats the value using the given formatter. Read more

impl Default for Listen

fn default() -> Listen

Returns the “default value” for a type. Read more

impl<'de> Deserialize<'de> for Listen

fn deserialize<D>( deserializer: D, ) -> Result<Listen, <D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl Display for Listen

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

Formats the value using the given formatter. Read more

impl Hash for Listen

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

Feeds this value into the given Hasher. Read more

1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more

impl Ord for Listen

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

This method returns an Ordering between self and other. Read more

1.21.0 · Source§

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

Compares and returns the maximum of two values. Read more

1.21.0 · Source§

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

Compares and returns the minimum of two values. Read more

1.50.0 · Source§

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

Restrict a value to a certain interval. Read more

impl PartialEq for Listen

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

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

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

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

impl PartialOrd for Listen

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

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

1.0.0 · Source§

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

Tests less than (for self and other) and is used by the < operator. Read more

1.0.0 · Source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0 · Source§

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

Tests greater than (for self and other) and is used by the > operator. Read more

1.0.0 · Source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl Serialize for Listen

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more

impl TryFrom<CustomizableListen> for Listen

type Error = InvalidListen

The type returned in the event of a conversion error.

fn try_from( l: CustomizableListen, ) -> Result<Listen, <Listen as TryFrom<CustomizableListen>>::Error>

Performs the conversion.

impl Eq for Listen

impl StructuralPartialEq for Listen

Auto Trait Implementations§

impl UnwindSafe for Listen

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more

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Mutably borrows from an owned value. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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Compare self to key and return their ordering.

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Compare self and other Read more

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Checks if this value is equivalent to the given key. Read more

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