lettre::transport::smtp::client

Enum TlsVersion

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#[non_exhaustive]
pub enum TlsVersion {
    Tlsv10,
    Tlsv11,
    Tlsv12,
    Tlsv13,
}
Expand description

TLS protocol versions.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Tlsv10

TLS 1.0

Should only be used when trying to support legacy SMTP servers that haven’t updated to at least TLS 1.2 yet.

Supported by native-tls and boring-tls.

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Tlsv11

TLS 1.1

Should only be used when trying to support legacy SMTP servers that haven’t updated to at least TLS 1.2 yet.

Supported by native-tls and boring-tls.

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Tlsv12

TLS 1.2

A good option for most SMTP servers.

Supported by all TLS backends.

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Tlsv13

TLS 1.3

The most secure option, although not supported by all SMTP servers.

Although it is technically supported by all TLS backends, trying to set it for native-tls will give a runtime error.

Trait Implementations§

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impl Clone for TlsVersion

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fn clone(&self) -> TlsVersion

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TlsVersion

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

Formats the value using the given formatter. Read more
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impl Copy for TlsVersion

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impl<T> Any for T
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fn type_id(&self) -> TypeId

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

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fn len(&self) -> usize

The number of items that this chain link consists of.
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fn append_to(self, v: &mut Vec<T>)

Append the elements in this link to the chain.
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impl<T> CloneToUninit for T
where T: Clone,

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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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impl<T> Container<T> for T
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type Iter = Once<T>

An iterator over the items within this container, by value.
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Iterate over the elements of the container (using internal iteration because GATs are unstable).
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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, 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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type Owned = T

The resulting type after obtaining ownership.
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fn clone_into(&self, target: &mut 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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type Error = <U as TryFrom<T>>::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> OrderedContainer<T> for T
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