Struct ConnectionId 

pub struct ConnectionId(pub usize);

Available on crate feature server-core only.

Connection ID.

Tuple Fields

0: usize

Implementations

impl ConnectionId

pub const IN_PROCESS: ConnectionId

Owner of subscriptions created by in-process calls such as Methods::raw_json_request.

Servers count connections upwards from zero and never reach this value, so no transport connection can unsubscribe an in-process subscription.

pub fn next_unique() -> ConnectionId

Returns an id that no other live connection in this process shares.

Together with the subscription id this scopes a subscription, and servers of different transports can serve one shared subscription table, so the id has to be unique across every server in the process and not only within a single accept loop. Counting per server would give the first connection of each transport the same id, and an unsubscribe on one of them would then cancel a subscription of another.

A usize cannot wrap in practice on 64-bit targets, so ids are never reused and never reach Self::IN_PROCESS.

Trait Implementations

impl Clone for ConnectionId

fn clone(&self) -> ConnectionId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ConnectionId

impl Debug for ConnectionId

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

Formats the value using the given formatter.

impl Default for ConnectionId

fn default() -> ConnectionId

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ConnectionId

fn deserialize<__D>( __deserializer: __D, ) -> Result<ConnectionId, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ConnectionId

impl From<usize> for ConnectionId

fn from(id: usize) -> ConnectionId

Converts to this type from the input type.

impl Hash for ConnectionId

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ConnectionId

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ConnectionId

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.

impl StructuralPartialEq for ConnectionId

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes