Struct frame_system::CheckNonce[][src]

pub struct CheckNonce<T: Config>(_);
Expand description

Nonce check and increment to give replay protection for transactions.

Note that this does not set any priority by default. Make sure that AT LEAST one of the signed extension sets some kind of priority upon validating transactions.

Implementations

utility constructor. Used only in client/factory code.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Attempt to deserialise the value from input.

Attempt to skip the encoded value from input. Read more

Returns the fixed encoded size of the type. Read more

Convert self to a slice and append it to the destination.

Convert self to an owned vector.

Convert self to a slice and then invoke the given closure with it.

If possible give a hint of expected size of the encoding. Read more

Calculates the encoded size. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

The type which encodes the sender identity.

The type which encodes the call to be dispatched.

Any additional data that will go into the signed payload. This may be created dynamically from the transaction using the additional_signed function. Read more

The type that encodes information that can be passed from pre_dispatch to post-dispatch.

Unique identifier of this signed extension. Read more

Construct any additional data that should be in the signed payload of the transaction. Can also perform any pre-signature-verification checks and return an error if needed. Read more

Do any pre-flight stuff for a signed transaction. Read more

Validate a signed transaction for the transaction queue. Read more

Validate an unsigned transaction for the transaction queue. Read more

Do any pre-flight stuff for a unsigned transaction. Read more

Do any post-flight stuff for an extrinsic. Read more

Returns the list of unique identifier for this signed extension. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Convert from a value of T into an equivalent instance of Option<Self>. Read more

Consume self to return Some equivalent value of Option<T>. Read more

Decode Self and consume all of the given input data. Read more

Decode Self and consume all of the given input data. Read more

Decode Self with the given maximum recursion depth. Read more

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

Cast reference.

Cast reference.

Cast mutable reference.

Cast mutable reference.

Get a reference to the inner from the outer.

Get a mutable reference to the inner from the outer.

Return an encoding of Self prepended by given slice.

Should always be Self

Convert from a value of T into an equivalent instance of Self. Read more

Consume self to return an equivalent value of T. Read more

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The counterpart to unchecked_from.

Consume self to return an equivalent value of T.