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take arbitrary IO for udp proxy (#1641)
* udp relay * refact * reset * Update crates/shadowsocks/src/relay/udprelay/proxy_socket.rs * export trait
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| use async_trait::async_trait; | ||
| use std::{ | ||
| io::Result, | ||
| net::SocketAddr, | ||
| ops::Deref, | ||
| task::{Context, Poll}, | ||
| }; | ||
| use tokio::io::ReadBuf; | ||
|
|
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| use crate::net::UdpSocket; | ||
|
|
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| /// a trait for datagram transport that wraps around a tokio `UdpSocket` | ||
| #[async_trait] | ||
| pub trait DatagramTransport: Send + Sync + std::fmt::Debug { | ||
| async fn recv(&self, buf: &mut [u8]) -> Result<usize>; | ||
| async fn recv_from(&self, buf: &mut [u8]) -> Result<(usize, SocketAddr)>; | ||
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|
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| async fn send(&self, buf: &[u8]) -> Result<usize>; | ||
| async fn send_to(&self, buf: &[u8], target: SocketAddr) -> Result<usize>; | ||
|
|
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| fn poll_recv(&self, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<Result<()>>; | ||
| fn poll_recv_from(&self, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<Result<SocketAddr>>; | ||
| fn poll_recv_ready(&self, cx: &mut Context<'_>) -> Poll<Result<()>>; | ||
|
|
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| fn poll_send(&self, cx: &mut Context<'_>, buf: &[u8]) -> Poll<Result<usize>>; | ||
| fn poll_send_to(&self, cx: &mut Context<'_>, buf: &[u8], target: SocketAddr) -> Poll<Result<usize>>; | ||
| fn poll_send_ready(&self, cx: &mut Context<'_>) -> Poll<Result<()>>; | ||
|
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| fn local_addr(&self) -> Result<SocketAddr>; | ||
|
|
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| #[cfg(unix)] | ||
| fn as_raw_fd(&self) -> std::os::fd::RawFd; | ||
| } | ||
|
|
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| #[async_trait] | ||
| impl DatagramTransport for UdpSocket { | ||
| async fn recv(&self, buf: &mut [u8]) -> Result<usize> { | ||
| UdpSocket::recv(self, buf).await | ||
| } | ||
|
|
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| async fn recv_from(&self, buf: &mut [u8]) -> Result<(usize, SocketAddr)> { | ||
| UdpSocket::recv_from(self, buf).await | ||
| } | ||
|
|
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| async fn send(&self, buf: &[u8]) -> Result<usize> { | ||
| UdpSocket::send(self, buf).await | ||
| } | ||
|
|
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| async fn send_to(&self, buf: &[u8], target: SocketAddr) -> Result<usize> { | ||
| UdpSocket::send_to(self, buf, target).await | ||
| } | ||
|
|
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| fn poll_recv(&self, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<Result<()>> { | ||
| UdpSocket::poll_recv(self, cx, buf) | ||
| } | ||
|
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| fn poll_recv_from(&self, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<Result<SocketAddr>> { | ||
| UdpSocket::poll_recv_from(self, cx, buf) | ||
| } | ||
|
|
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| fn poll_recv_ready(&self, cx: &mut Context<'_>) -> Poll<Result<()>> { | ||
| self.deref().poll_recv_ready(cx) | ||
| } | ||
|
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| fn poll_send(&self, cx: &mut Context<'_>, buf: &[u8]) -> Poll<Result<usize>> { | ||
| UdpSocket::poll_send(self, cx, buf) | ||
| } | ||
|
|
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| fn poll_send_to(&self, cx: &mut Context<'_>, buf: &[u8], target: SocketAddr) -> Poll<Result<usize>> { | ||
| UdpSocket::poll_send_to(self, cx, buf, target) | ||
| } | ||
|
|
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| fn poll_send_ready(&self, cx: &mut Context<'_>) -> Poll<Result<()>> { | ||
| self.deref().poll_send_ready(cx) | ||
| } | ||
|
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| fn local_addr(&self) -> Result<SocketAddr> { | ||
| self.deref().local_addr() | ||
| } | ||
|
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| #[cfg(unix)] | ||
| fn as_raw_fd(&self) -> std::os::fd::RawFd { | ||
| use std::ops::Deref; | ||
| use std::os::fd::AsRawFd; | ||
|
|
||
| self.deref().as_raw_fd() | ||
| } | ||
| } |
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