Trait SmtpCoroutine 

pub trait SmtpCoroutine {
    type Yield;
    type Return;

    // Required method
    fn resume(
        &mut self,
        arg: Option<&[u8]>,
    ) -> SmtpCoroutineState<Self::Yield, Self::Return>;
}

Standard-shape SMTP coroutine.

Required Associated Types

type Yield

Per-step value.

type Return

Terminal value; by convention Result<Output, Error>.

Required Methods

fn resume( &mut self, arg: Option<&[u8]>, ) -> SmtpCoroutineState<Self::Yield, Self::Return>

Advances the coroutine one step. Pass None for the initial call or after a SmtpYield::WantsWrite; Some(data) after a SmtpYield::WantsRead; Some(&[]) to signal EOF.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl SmtpCoroutine for SmtpAuthAnonymous

type Yield = SmtpYield

type Return = Result<(), SmtpAuthAnonymousError>

impl SmtpCoroutine for SmtpAuthLogin

type Yield = SmtpYield

type Return = Result<(), SmtpAuthLoginError>

impl SmtpCoroutine for SmtpAuthOauthbearer

type Yield = SmtpYield

type Return = Result<(), SmtpAuthOauthbearerError>

impl SmtpCoroutine for SmtpAuthPlain

type Yield = SmtpYield

type Return = Result<(), SmtpAuthPlainError>

impl SmtpCoroutine for SmtpAuthScramSha256

Available on crate feature scram only.

type Yield = SmtpYield

type Return = Result<(), SmtpAuthScramSha256Error>

impl SmtpCoroutine for SmtpAuthXoauth2

type Yield = SmtpYield

type Return = Result<(), SmtpAuthXoauth2Error>

impl SmtpCoroutine for SmtpData

type Yield = SmtpYield

type Return = Result<(), SmtpDataError>

impl SmtpCoroutine for SmtpEhlo

type Yield = SmtpYield

type Return = Result<Vec<Cow<'static, str>>, SmtpEhloError>

impl SmtpCoroutine for SmtpGreetingGet

type Yield = SmtpYield

type Return = Result<SmtpGreeting<'static>, SmtpGreetingGetError>

impl SmtpCoroutine for SmtpHelo

type Yield = SmtpYield

type Return = Result<(), SmtpHeloError>

impl SmtpCoroutine for SmtpMail

type Yield = SmtpYield

type Return = Result<(), SmtpMailError>

impl SmtpCoroutine for SmtpMessageSend

type Yield = SmtpYield

type Return = Result<(), SmtpMessageSendError>

impl SmtpCoroutine for SmtpNoop

type Yield = SmtpYield

type Return = Result<(), SmtpNoopError>

impl SmtpCoroutine for SmtpQuit

type Yield = SmtpYield

type Return = Result<(), SmtpQuitError>

impl SmtpCoroutine for SmtpRaw

type Yield = SmtpYield

type Return = Result<String, SmtpRawError>

impl SmtpCoroutine for SmtpRcpt

type Yield = SmtpYield

type Return = Result<(), SmtpRcptError>

impl SmtpCoroutine for SmtpRset

type Yield = SmtpYield

type Return = Result<(), SmtpRsetError>

impl SmtpCoroutine for SmtpStartTls

type Yield = SmtpYield

type Return = Result<Vec<u8>, SmtpStartTlsError>

impl<Cmd> SmtpCoroutine for SmtpCommandSend<Cmd>

type Yield = SmtpYield

type Return = Result<SmtpCommandSendOk, SmtpCommandSendError>