libp2p-core 0.16.0

Core traits and structs of libp2p
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49


#![allow(dead_code)]

use futures::prelude::*;
use libp2p_core::muxing::StreamMuxer;
use std::{pin::Pin, task::Context, task::Poll};

pub struct CloseMuxer<M> {
    state: CloseMuxerState<M>,
}

impl<M> CloseMuxer<M> {
    pub fn new(m: M) -> CloseMuxer<M> {
        CloseMuxer {
            state: CloseMuxerState::Close(m)
        }
    }
}

pub enum CloseMuxerState<M> {
    Close(M),
    Done,
}

impl<M> Future for CloseMuxer<M>
where
    M: StreamMuxer,
    M::Error: From<std::io::Error>
{
    type Output = Result<M, M::Error>;

    fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
        loop {
            match std::mem::replace(&mut self.state, CloseMuxerState::Done) {
                CloseMuxerState::Close(muxer) => {
                    if !muxer.close(cx)?.is_ready() {
                        self.state = CloseMuxerState::Close(muxer);
                        return Poll::Pending
                    }
                    return Poll::Ready(Ok(muxer))
                }
                CloseMuxerState::Done => panic!()
            }
        }
    }
}

impl<M> Unpin for CloseMuxer<M> {
}