pub struct OnUpgrade { /* private fields */ }
Expand description

A future for a possible HTTP upgrade.

If no upgrade was available, or it doesn’t succeed, yields an Error.

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impl Debug for OnUpgrade

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

Formats the value using the given formatter. Read more
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impl Future for OnUpgrade

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type Output = Result<Upgraded, Error>

The type of value produced on completion.
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fn poll( self: Pin<&mut OnUpgrade>, cx: &mut Context<'_> ) -> Poll<<OnUpgrade as Future>::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

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Catches unwinding panics while polling the future. Read more
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fn unit_error(self) -> UnitError<Self>where Self: Sized,

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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>where Self: Unpin,

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