chore: 初始化 client v2

packages/client-v2/src/net/discovery.rs

@@ -0,0 +1,45 @@
+use crate::net::protocol::ControlPacket;
+use anyhow::Result;
+use std::net::{IpAddr, SocketAddr};
+use std::time::Duration;
+use tokio::net::UdpSocket;
+
+pub const DISCOVERY_PORT: u16 = 53530;
+
+/// 服务发现模块，用于主从节点的自动发现
+pub struct Discovery;
+
+impl Discovery {
+    /// 主节点：启动广播，告知从节点自己的 TCP 端口
+    pub async fn start_broadcast(tcp_port: u16) -> Result<()> {
+        let socket = UdpSocket::bind("0.0.0.0:0").await?;
+        socket.set_broadcast(true)?;
+
+        let target: SocketAddr = format!("255.255.255.255:{}", DISCOVERY_PORT).parse()?;
+        let msg = postcard::to_allocvec(&ControlPacket::ServerHello { udp_port: tcp_port })?;
+
+        tokio::spawn(async move {
+            loop {
+                let _ = socket.send_to(&msg, target).await;
+                tokio::time::sleep(Duration::from_secs(1)).await;
+            }
+        });
+
+        Ok(())
+    }
+
+    /// 从节点：监听广播，发现主节点的 IP 和 TCP 端口
+    pub async fn discover_master() -> Result<(IpAddr, u16)> {
+        let socket = UdpSocket::bind(format!("0.0.0.0:{}", DISCOVERY_PORT)).await?;
+        let mut buf = [0u8; 1024];
+
+        loop {
+            let (len, addr) = socket.recv_from(&mut buf).await?;
+            if let Ok(ControlPacket::ServerHello { udp_port }) =
+                postcard::from_bytes::<ControlPacket>(&buf[..len])
+            {
+                return Ok((addr.ip(), udp_port));
+            }
+        }
+    }
+}

packages/client-v2/src/net/mod.rs

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+pub mod discovery;
+pub mod network;
+pub mod protocol;

packages/client-v2/src/net/network.rs

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+use crate::net::protocol::{AudioPacket, ControlPacket};
+use anyhow::{Context, Result};
+use std::net::SocketAddr;
+use std::sync::Arc;
+use tokio::io::{AsyncReadExt, AsyncWriteExt};
+use tokio::net::{TcpListener, TcpStream, UdpSocket};
+
+/// UDP 音频传输
+pub struct AudioSocket {
+    socket: Arc<UdpSocket>,
+}
+
+impl AudioSocket {
+    pub async fn bind() -> Result<Self> {
+        let socket = UdpSocket::bind("0.0.0.0:0").await?;
+        Ok(Self {
+            socket: Arc::new(socket),
+        })
+    }
+
+    pub fn local_port(&self) -> Result<u16> {
+        Ok(self.socket.local_addr()?.port())
+    }
+
+    pub async fn send_packet(&self, packet: &AudioPacket, target: SocketAddr) -> Result<()> {
+        let bytes = postcard::to_allocvec(packet)?;
+        self.socket.send_to(&bytes, target).await?;
+        Ok(())
+    }
+
+    pub async fn recv_packet(&self, buf: &mut [u8]) -> Result<(AudioPacket, SocketAddr)> {
+        let (len, addr) = self.socket.recv_from(buf).await?;
+        let packet = postcard::from_bytes(&buf[..len])?;
+        Ok((packet, addr))
+    }
+
+    pub async fn punch(&self, target: SocketAddr) -> Result<()> {
+        self.socket.send_to(&[0u8; 1], target).await?;
+        Ok(())
+    }
+
+    pub fn clone_inner(&self) -> Arc<UdpSocket> {
+        self.socket.clone()
+    }
+}
+
+/// TCP 控制连接
+pub struct ControlConnection {
+    stream: TcpStream,
+}
+
+impl ControlConnection {
+    pub fn new(stream: TcpStream) -> Self {
+        Self { stream }
+    }
+
+    pub async fn send_packet(&mut self, packet: &ControlPacket) -> Result<()> {
+        let bytes = postcard::to_allocvec(packet)?;
+        self.stream.write_all(&bytes).await?;
+        Ok(())
+    }
+
+    pub async fn recv_packet(&mut self, buf: &mut [u8]) -> Result<ControlPacket> {
+        let len = self.stream.read(buf).await?;
+        if len == 0 {
+            return Err(anyhow::anyhow!("连接已关闭"));
+        }
+        let packet = postcard::from_bytes(&buf[..len])?;
+        Ok(packet)
+    }
+
+    pub fn split(
+        self,
+    ) -> (
+        tokio::net::tcp::OwnedReadHalf,
+        tokio::net::tcp::OwnedWriteHalf,
+    ) {
+        self.stream.into_split()
+    }
+}
+
+/// 主节点网络管理器
+pub struct MasterNetwork {
+    listener: TcpListener,
+    audio: AudioSocket,
+}
+
+impl MasterNetwork {
+    pub async fn setup(port: u16) -> Result<Self> {
+        let listener = TcpListener::bind(format!("0.0.0.0:{}", port)).await?;
+        let audio = AudioSocket::bind().await?;
+        Ok(Self { listener, audio })
+    }
+
+    pub async fn accept(&self) -> Result<(ControlConnection, SocketAddr)> {
+        let (stream, addr) = self.listener.accept().await?;
+        Ok((ControlConnection::new(stream), addr))
+    }
+
+    pub fn audio_socket(&self) -> &AudioSocket {
+        &self.audio
+    }
+}
+
+/// 从节点网络管理器
+pub struct SlaveNetwork {
+    control: ControlConnection,
+    audio: AudioSocket,
+}
+
+impl SlaveNetwork {
+    pub async fn connect(master_addr: SocketAddr) -> Result<Self> {
+        let stream = TcpStream::connect(master_addr)
+            .await
+            .context(format!("无法连接到主节点 TCP 地址: {}", master_addr))?;
+        let audio = AudioSocket::bind().await?;
+        Ok(Self {
+            control: ControlConnection::new(stream),
+            audio,
+        })
+    }
+
+    pub fn split(self) -> (ControlConnection, AudioSocket) {
+        (self.control, self.audio)
+    }
+}

packages/client-v2/src/net/protocol.rs

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+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Copy)]
+pub enum ChannelRole {
+    Left,
+    Right,
+}
+
+impl ChannelRole {
+    pub fn to_string(&self) -> String {
+        match self {
+            ChannelRole::Left => "左声道".to_string(),
+            ChannelRole::Right => "右声道".to_string(),
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum ControlPacket {
+    // 发现协议
+    ServerHello {
+        udp_port: u16, // UDP 音频流端口
+    },
+    // 握手协议
+    ClientIdentify {
+        role: ChannelRole,
+    },
+    // 时间同步 (持续进行)
+    Ping {
+        client_ts: u128,
+        seq: u32,
+    },
+    Pong {
+        client_ts: u128,
+        server_ts: u128,
+        seq: u32,
+    },
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct AudioPacket {
+    pub seq: u32,        // 序列号，用于丢包检测
+    pub timestamp: u128, // 目标播放时间 (主节点时间)
+    pub data: Vec<u8>,   // Opus 编码数据
+}