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114 lines
2.8 KiB
114 lines
2.8 KiB
use async_trait::async_trait;
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use futures::prelude::*;
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use libp2p::{
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core::upgrade,
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request_response::{ProtocolName, RequestResponseCodec},
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};
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use serde::{Deserialize, Serialize};
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use std::{fmt::Debug, io};
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use crate::SwapParams;
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use xmr_btc::{alice, bob, monero};
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/// Time to wait for a response back once we send a request.
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pub const TIMEOUT: u64 = 3600; // One hour.
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/// Messages Bob sends to Alice.
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#[derive(Clone, Debug, Serialize, Deserialize)]
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#[allow(clippy::large_enum_variant)]
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pub enum BobToAlice {
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#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
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AmountsFromBtc(::bitcoin::Amount),
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AmountsFromXmr(monero::Amount),
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Message0(bob::Message0),
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Message1(bob::Message1),
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}
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/// Messages Alice sends to Bob.
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#[derive(Clone, Debug, Serialize, Deserialize)]
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#[allow(clippy::large_enum_variant)]
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pub enum AliceToBob {
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Amounts(SwapParams),
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Message0(alice::Message0),
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Message1(alice::Message1),
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}
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#[derive(Debug, Clone, Copy, Default)]
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pub struct Protocol;
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impl ProtocolName for Protocol {
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fn protocol_name(&self) -> &[u8] {
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b"/xmr/btc/1.0.0"
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}
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}
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#[derive(Clone, Copy, Debug, Default)]
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pub struct Codec;
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#[async_trait]
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impl RequestResponseCodec for Codec {
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type Protocol = Protocol;
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type Request = BobToAlice;
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type Response = AliceToBob;
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async fn read_request<T>(&mut self, _: &Self::Protocol, io: &mut T) -> io::Result<Self::Request>
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where
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T: AsyncRead + Unpin + Send,
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{
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let message = upgrade::read_one(io, 1024)
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.await
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.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))?;
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let mut de = serde_json::Deserializer::from_slice(&message);
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let msg = BobToAlice::deserialize(&mut de)?;
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Ok(msg)
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}
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async fn read_response<T>(
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&mut self,
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_: &Self::Protocol,
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io: &mut T,
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) -> io::Result<Self::Response>
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where
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T: AsyncRead + Unpin + Send,
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{
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let message = upgrade::read_one(io, 1024)
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.await
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.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))?;
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let mut de = serde_json::Deserializer::from_slice(&message);
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let msg = AliceToBob::deserialize(&mut de)?;
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Ok(msg)
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}
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async fn write_request<T>(
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&mut self,
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_: &Self::Protocol,
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io: &mut T,
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req: Self::Request,
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) -> io::Result<()>
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where
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T: AsyncWrite + Unpin + Send,
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{
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let bytes = serde_json::to_vec(&req)?;
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upgrade::write_one(io, &bytes).await?;
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Ok(())
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}
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async fn write_response<T>(
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&mut self,
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_: &Self::Protocol,
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io: &mut T,
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res: Self::Response,
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) -> io::Result<()>
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where
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T: AsyncWrite + Unpin + Send,
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{
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let bytes = serde_json::to_vec(&res)?;
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upgrade::write_one(io, &bytes).await?;
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Ok(())
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}
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}
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