Struct MessageId 

#[non_exhaustive]
pub struct MessageId(/* private fields */);

A validated RFC 5322 message-ID (bare, without angle brackets).

RFC 5322 Section 3.6.4 defines msg-id = "<" id-left "@" id-right ">". This type stores only the bare id-left "@" id-right content. Angle brackets are added by the builder when emitting wire format.

Validation rules

• Non-empty
• Exactly one @ separator
• id-left and id-right must each be non-empty
• No whitespace, angle brackets, or control characters

References

• RFC 5322 Section 3.6.4 (message identification)

Implementations

impl MessageId

pub fn new(s: impl Into<String>) -> Result<Self>

Creates a new MessageId after validation (RFC 5322 Section 3.6.4).

The value must be a bare message-ID (no angle brackets) containing exactly one @ with non-empty parts on each side, and no whitespace, angle brackets, or control characters.

Errors

Returns crate::error::Error::InvalidMessageId if validation fails.

References

• RFC 5322 Section 3.6.4

pub fn as_str(&self) -> &str

Returns the message-ID as a string slice.

pub fn into_inner(self) -> String

Consumes self and returns the inner String.

Trait Implementations

impl AsRef<str> for MessageId

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for MessageId

fn clone(&self) -> MessageId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageId

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

Formats the value using the given formatter.

impl Display for MessageId

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

Displays the bare message-ID (RFC 5322 Section 3.6.4).

impl From<MessageId> for String

fn from(m: MessageId) -> Self

Converts to this type from the input type.

impl Hash for MessageId

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

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 MessageId

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

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

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 TryFrom<&str> for MessageId

fn try_from(s: &str) -> Result<Self, Self::Error>

Converts a &str into a validated MessageId (RFC 5322 Section 3.6.4).

type Error = Error

The type returned in the event of a conversion error.

impl TryFrom<String> for MessageId

fn try_from(s: String) -> Result<Self, Self::Error>

Converts a String into a validated MessageId (RFC 5322 Section 3.6.4).

type Error = Error

The type returned in the event of a conversion error.

impl Eq for MessageId

impl StructuralPartialEq for MessageId