mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-05-17 21:31:20 +00:00
77 lines
2.6 KiB
Rust
77 lines
2.6 KiB
Rust
// Copyright 2019 Parity Technologies (UK) Ltd.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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use flate2::read::DeflateDecoder;
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use flate2::write::DeflateEncoder;
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use flate2::Compression;
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use std::io;
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use futures::future::{self, FutureResult};
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use libp2p_core::{upgrade::Negotiated, InboundUpgrade, OutboundUpgrade, UpgradeInfo};
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use std::iter;
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use tokio_io::{AsyncRead, AsyncWrite};
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#[derive(Debug, Copy, Clone)]
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pub struct DeflateConfig;
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/// Output of the deflate protocol.
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pub type DeflateOutput<S> = DeflateDecoder<DeflateEncoder<S>>;
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impl UpgradeInfo for DeflateConfig {
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type Info = &'static [u8];
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type InfoIter = iter::Once<Self::Info>;
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fn protocol_info(&self) -> Self::InfoIter {
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iter::once(b"/deflate/1.0.0")
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}
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}
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impl<C> InboundUpgrade<C> for DeflateConfig
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where
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C: AsyncRead + AsyncWrite,
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{
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type Output = DeflateOutput<Negotiated<C>>;
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type Error = io::Error;
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type Future = FutureResult<Self::Output, Self::Error>;
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fn upgrade_inbound(self, r: Negotiated<C>, _: Self::Info) -> Self::Future {
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future::ok(DeflateDecoder::new(DeflateEncoder::new(
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r,
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Compression::default(),
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)))
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}
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}
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impl<C> OutboundUpgrade<C> for DeflateConfig
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where
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C: AsyncRead + AsyncWrite,
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{
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type Output = DeflateOutput<Negotiated<C>>;
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type Error = io::Error;
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type Future = FutureResult<Self::Output, Self::Error>;
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fn upgrade_outbound(self, w: Negotiated<C>, _: Self::Info) -> Self::Future {
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future::ok(DeflateDecoder::new(DeflateEncoder::new(
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w,
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Compression::default(),
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)))
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}
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}
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