lers 0.4.0

An async, user-friendly Let's Encrypt/ACMEv2 library written in Rust
Documentation 
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use parking_lot::RwLock;
use std::{collections::HashMap, sync::Arc};
use tokio::{sync::oneshot, task::JoinHandle};

pub(crate) type Challenges<T> = Arc<RwLock<HashMap<String, T>>>;

/// A handle to stop the solver server once started.
pub struct SolverHandle<E> {
    pub(crate) handle: JoinHandle<Result<(), E>>,
    pub(crate) tx: oneshot::Sender<()>,
}

impl<E> SolverHandle<E> {
    /// Stop the server
    pub async fn stop(self) -> Result<(), E> {
        let _ = self.tx.send(());
        self.handle.await.unwrap()
    }
}