mqtt_protocol_core::mqtt::connection::role

Struct Server

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pub struct Server;
Expand description

MQTT Server/Broker role type

Represents an MQTT broker/server that accepts client connections. Servers can:

  • Accept CONNECT packets from clients and respond with CONNACK
  • Receive published messages and route them to subscribers
  • Handle SUBSCRIBE packets and respond with SUBACK
  • Handle UNSUBSCRIBE packets and respond with UNSUBACK
  • Respond to PINGREQ packets with PINGRESP
  • Manage client sessions and retained messages

This is a zero-sized type used purely for compile-time role identification. The actual server behavior is implemented in the connection logic that uses this role type as a generic parameter.

§Protocol Restrictions

When using the Server role, certain MQTT packets are restricted:

  • Cannot send CONNECT (connection request)
  • Cannot send SUBSCRIBE (subscription request)
  • Cannot send UNSUBSCRIBE (unsubscription request)
  • Cannot send PINGREQ (ping request)

§Examples

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use mqtt_protocol_core::mqtt;

// Server role is typically used as a generic parameter
type ServerConnection = mqtt::connection::GenericConnection<mqtt::connection::Server, u16>;

// Role constants can be checked at compile time
assert_eq!(mqtt::connection::Server::IS_CLIENT, false);
assert_eq!(mqtt::connection::Server::IS_SERVER, true);

Trait Implementations§

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impl<PacketIdType> RecvBehavior<Server, PacketIdType> for GenericConnection<Server, PacketIdType>
where PacketIdType: IsPacketId,

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fn recv(&mut self, data: &mut Cursor<&[u8]>) -> Vec<GenericEvent<PacketIdType>>

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impl RoleType for Server

Implementation of RoleType for Server

Configures the Server role type with the appropriate role flags. Only the IS_SERVER flag is set to true, clearly identifying this type as representing an MQTT server/broker role.

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const IS_SERVER: bool = true

Indicates if this role type represents an MQTT server/broker Read more
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const IS_CLIENT: bool = false

Indicates if this role type represents an MQTT client Read more
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const IS_ANY: bool = false

Indicates if this role type can represent any MQTT role Read more
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impl<PacketIdType> Sendable<Server, PacketIdType> for GenericPacket<PacketIdType>
where PacketIdType: IsPacketId,

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fn dispatch_send( self, connection: &mut GenericConnection<Server, PacketIdType>, ) -> Vec<GenericEvent<PacketIdType>>

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impl SendableRole<Server> for Auth

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impl SendableRole<Server> for Connack

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impl SendableRole<Server> for Connack

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impl SendableRole<Server> for Disconnect

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impl<PacketIdType> SendableRole<Server> for GenericPuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubcomp<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubcomp<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPublish<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPublish<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubrec<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubrec<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubrel<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericPubrel<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericSuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericSuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericUnsuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl<PacketIdType> SendableRole<Server> for GenericUnsuback<PacketIdType>
where PacketIdType: IsPacketId,

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impl SendableRole<Server> for Pingresp

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impl SendableRole<Server> for Pingresp

Auto Trait Implementations§

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impl Freeze for Server

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impl RefUnwindSafe for Server

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impl Send for Server

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impl Sync for Server

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impl Unpin for Server

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impl UnwindSafe for Server

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> AsConcrete<T> for T

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fn as_concrete(&self) -> Option<&T>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoConcreteOwned<T> for T

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fn into_concrete_owned(self) -> Option<T>

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more