tcp accept should retry when encoutering some kinds of error (#565)

* tcp accept should retry when encoutering some kinds of error

bump version to v2.1.2

* persistent temporary machine id

.github/workflows/release.yml

@@ -21,7 +21,7 @@ on:
       version:
         description: 'Version for this release'
         type: string
-        default: 'v2.1.1'
+        default: 'v2.1.2'
         required: true
       make_latest:
         description: 'Mark this release as latest'

Cargo.lock

@@ -1830,7 +1830,7 @@ checksum = "0d6ef0072f8a535281e4876be788938b528e9a1d43900b82c2569af7da799125"
 
 [[package]]
 name = "easytier"
-version = "2.1.1"
+version = "2.1.2"
 dependencies = [
  "aes-gcm",
  "anyhow",
@@ -1926,7 +1926,7 @@ dependencies = [
 
 [[package]]
 name = "easytier-gui"
-version = "2.1.1"
+version = "2.1.2"
 dependencies = [
  "anyhow",
  "chrono",

README.md

@@ -31,6 +31,7 @@ EasyTier is a simple, safe and decentralized VPN networking solution implemented
 - **High Availability**: Supports multi-path and switches to healthy paths when high packet loss or network errors are detected.
 - **IPv6 Support**: Supports networking using IPv6.
 - **Multiple Protocol Types**: Supports communication between nodes using protocols such as WebSocket and QUIC.
+- **Web Management Interface**: Provides a [web-based management](https://easytier.cn/web) interface for easy configuration and monitoring.
 
 ## Installation
 
@@ -52,7 +53,7 @@ EasyTier is a simple, safe and decentralized VPN networking solution implemented
 
 4. **Install by Docker Compose**
 
-    Please visit the [EasyTier Official Website](https://www.easytier.top/en/) to view the full documentation.
+    Please visit the [EasyTier Official Website](https://www.easytier.cn/en/) to view the full documentation.
 
 5. **Install by script (For Linux Only)**
 
@@ -200,20 +201,20 @@ Subnet proxy information will automatically sync to each node in the virtual net
 
 ### Networking without Public IP
 
-EasyTier supports networking using shared public nodes. The currently deployed shared public node is ``tcp://public.easytier.top:11010``.
+EasyTier supports networking using shared public nodes. The currently deployed shared public node is ``tcp://public.easytier.cn:11010``.
 
 When using shared nodes, each node entering the network needs to provide the same ``--network-name`` and ``--network-secret`` parameters as the unique identifier of the network.
 
 Taking two nodes as an example, Node A executes:
 
 ```sh
-sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
+sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -p tcp://public.easytier.cn:11010
 ```
 
 Node B executes
 
 ```sh
-sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
+sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -p tcp://public.easytier.cn:11010
 ```
 
 After the command is successfully executed, Node A can access Node B through the virtual IP 10.144.144.2.
@@ -286,7 +287,7 @@ Run you own public server cluster is exactly same as running an virtual network,
 You can also join the official public server cluster with following command:
 
 ```
-sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.top:11010
+sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.cn:11010
 ```
 
 
@@ -296,10 +297,8 @@ You can use ``easytier-core --help`` to view all configuration items
 
 ## Roadmap
 
-- [ ] Improve documentation and user guides.
-- [ ] Support features such as encryption, TCP hole punching, etc.
+- [ ] Support features such TCP hole punching, KCP, FEC etc.
 - [ ] Support iOS.
-- [ ] Support Web configuration management.
 
 ## Community and Contribution
 

README_CN.md

@@ -8,7 +8,7 @@
 
 [简体中文](/README_CN.md) | [English](/README.md)
 
-**请访问 [EasyTier 官网](https://www.easytier.top/) 以查看完整的文档。**
+**请访问 [EasyTier 官网](https://www.easytier.cn/) 以查看完整的文档。**
 
 一个简单、安全、去中心化的内网穿透 VPN 组网方案，使用 Rust 语言和 Tokio 框架实现。
 
@@ -31,6 +31,7 @@
 - **高可用性**：支持多路径和在检测到高丢包率或网络错误时切换到健康路径。
 - **IPV6 支持**：支持利用 IPV6 组网。
 - **多协议类型**: 支持使用 WebSocket、QUIC 等协议进行节点间通信。
+- **Web 管理界面**：支持通过 [Web 界面](https://easytier.cn)管理节点。
 
 ## 安装
 
@@ -52,7 +53,7 @@
 
 4. **通过Docker Compose安装**
 
-    请访问 [EasyTier 官网](https://www.easytier.top/) 以查看完整的文档。
+    请访问 [EasyTier 官网](https://www.easytier.cn/) 以查看完整的文档。
 
 5. **使用一键脚本安装 (仅适用于 Linux)**
 
@@ -199,20 +200,20 @@ sudo easytier-core --ipv4 10.144.144.2 -n 10.1.1.0/24
 
 ### 无公网IP组网
 
-EasyTier 支持共享公网节点进行组网。目前已部署共享的公网节点 ``tcp://public.easytier.top:11010``。
+EasyTier 支持共享公网节点进行组网。目前已部署共享的公网节点 ``tcp://public.easytier.cn:11010``。
 
 使用共享节点时，需要每个入网节点提供相同的 ``--network-name`` 和 ``--network-secret`` 参数，作为网络的唯一标识。
 
 以双节点为例，节点 A 执行：
 
 ```sh
-sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
+sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -p tcp://public.easytier.cn:11010
 ```
 
 节点 B 执行
 
 ```sh
-sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
+sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -p tcp://public.easytier.cn:11010
 ```
 
 命令执行成功后，节点 A 即可通过虚拟 IP 10.144.144.2 访问节点 B。
@@ -289,7 +290,7 @@ connected_clients:
 也可以使用以下命令加入官方公共服务器集群，后续将实现公共服务器集群的节点间负载均衡：
 
 ```
-sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.top:11010
+sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.cn:11010
 ```
 
 ### 其他配置
@@ -299,9 +300,8 @@ sudo easytier-core --network-name easytier --network-secret easytier -p tcp://pu
 ## 路线图
 
 - [ ] 完善文档和用户指南。
-- [ ] 支持 TCP 打洞等特性。
+- [ ] 支持 TCP 打洞、KCP、FEC 等特性。
 - [ ] 支持 iOS。
-- [ ] 支持 Web 配置管理。
 
 ## 社区和贡献
 

easytier-gui/package.json

@@ -1,7 +1,7 @@
 {
   "name": "easytier-gui",
   "type": "module",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "private": true,
   "packageManager": "pnpm@9.12.1+sha512.e5a7e52a4183a02d5931057f7a0dbff9d5e9ce3161e33fa68ae392125b79282a8a8a470a51dfc8a0ed86221442eb2fb57019b0990ed24fab519bf0e1bc5ccfc4",
   "scripts": {

easytier-gui/src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "easytier-gui"
-version = "2.1.1"
+version = "2.1.2"
 description = "EasyTier GUI"
 authors = ["you"]
 edition = "2021"

easytier-gui/src-tauri/tauri.conf.json

@@ -17,7 +17,7 @@
     "createUpdaterArtifacts": false
   },
   "productName": "easytier-gui",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "identifier": "com.kkrainbow.easytier",
   "plugins": {},
   "app": {

easytier/Cargo.toml

@@ -3,7 +3,7 @@ name = "easytier"
 description = "A full meshed p2p VPN, connecting all your devices in one network with one command."
 homepage = "https://github.com/EasyTier/EasyTier"
 repository = "https://github.com/EasyTier/EasyTier"
-version = "2.1.1"
+version = "2.1.2"
 edition = "2021"
 authors = ["kkrainbow"]
 keywords = ["vpn", "p2p", "network", "easytier"]

easytier/src/common/mod.rs

@@ -1,6 +1,7 @@
 use std::{
     fmt::Debug,
     future,
+    io::Write as _,
     sync::{Arc, Mutex},
 };
 use tokio::task::JoinSet;
@@ -81,7 +82,17 @@ pub fn join_joinset_background<T: Debug + Send + Sync + 'static>(
 }
 
 pub fn get_machine_id() -> uuid::Uuid {
-    // TODO: load from local file
+    // a path same as the binary
+    let machine_id_file = std::env::current_exe()
+        .map(|x| x.with_file_name("et_machine_id"))
+        .unwrap_or_else(|_| std::path::PathBuf::from("et_machine_id"));
+
+    // try load from local file
+    if let Ok(mid) = std::fs::read_to_string(&machine_id_file) {
+        if let Ok(mid) = uuid::Uuid::parse_str(mid.trim()) {
+            return mid;
+        }
+    }
 
     #[cfg(any(
         target_os = "linux",
@@ -95,7 +106,7 @@ pub fn get_machine_id() -> uuid::Uuid {
             crate::tunnel::generate_digest_from_str("", x.as_str(), &mut b);
             uuid::Uuid::from_bytes(b)
         })
-        .unwrap_or(uuid::Uuid::new_v4());
+        .ok();
 
     #[cfg(not(any(
         target_os = "linux",
@@ -103,9 +114,18 @@ pub fn get_machine_id() -> uuid::Uuid {
         target_os = "windows",
         target_os = "freebsd"
     )))]
+    let gen_mid = None;
+
+    if gen_mid.is_some() {
+        return gen_mid.unwrap();
+    }
+
     let gen_mid = uuid::Uuid::new_v4();
 
-    // TODO: save to local file
+    // try save to local file
+    if let Ok(mut file) = std::fs::File::create(machine_id_file) {
+        let _ = file.write_all(gen_mid.to_string().as_bytes());
+    }
 
     gen_mid
 }

easytier/src/instance/listeners.rs

@@ -163,7 +163,7 @@ impl<H: TunnelHandlerForListener + Send + Sync + 'static + Debug> ListenerManage
                 Err(e) => {
                     global_ctx.issue_event(GlobalCtxEvent::ListenerAddFailed(
                         l.local_url(),
-                        e.to_string(),
+                        format!("error: {:?}, retry listen later...", e),
                     ));
                     tracing::error!(?e, ?l, "listener listen error");
                     tokio::time::sleep(std::time::Duration::from_secs(1)).await;
@@ -176,7 +176,7 @@ impl<H: TunnelHandlerForListener + Send + Sync + 'static + Debug> ListenerManage
                     Err(e) => {
                         global_ctx.issue_event(GlobalCtxEvent::ListenerAcceptFailed(
                             l.local_url(),
-                            format!("error: {}, retry listen later...", e.to_string()),
+                            format!("error: {:?}, retry listen later...", e),
                         ));
                         tracing::error!(?e, ?l, "listener accept error");
                         tokio::time::sleep(std::time::Duration::from_secs(1)).await;

easytier/src/tunnel/tcp.rs

@@ -28,6 +28,30 @@ impl TcpTunnelListener {
             listener: None,
         }
     }
+
+    async fn do_accept(&mut self) -> Result<Box<dyn Tunnel>, std::io::Error> {
+        let listener = self.listener.as_ref().unwrap();
+        let (stream, _) = listener.accept().await?;
+
+        if let Err(e) = stream.set_nodelay(true) {
+            tracing::warn!(?e, "set_nodelay fail in accept");
+        }
+
+        let info = TunnelInfo {
+            tunnel_type: "tcp".to_owned(),
+            local_addr: Some(self.local_url().into()),
+            remote_addr: Some(
+                super::build_url_from_socket_addr(&stream.peer_addr()?.to_string(), "tcp").into(),
+            ),
+        };
+
+        let (r, w) = stream.into_split();
+        Ok(Box::new(TunnelWrapper::new(
+            FramedReader::new(r, TCP_MTU_BYTES),
+            FramedWriter::new(w),
+            Some(info),
+        )))
+    }
 }
 
 #[async_trait]
@@ -57,27 +81,23 @@ impl TunnelListener for TcpTunnelListener {
     }
 
     async fn accept(&mut self) -> Result<Box<dyn Tunnel>, super::TunnelError> {
-        let listener = self.listener.as_ref().unwrap();
-        let (stream, _) = listener.accept().await?;
-
-        if let Err(e) = stream.set_nodelay(true) {
-            tracing::warn!(?e, "set_nodelay fail in accept");
+        loop {
+            match self.do_accept().await {
+                Ok(ret) => return Ok(ret),
+                Err(e) => {
+                    use std::io::ErrorKind::*;
+                    if matches!(
+                        e.kind(),
+                        NotConnected | ConnectionAborted | ConnectionRefused | ConnectionReset
+                    ) {
+                        tracing::warn!(?e, "accept fail with retryable error: {:?}", e);
+                        continue;
+                    }
+                    tracing::warn!(?e, "accept fail");
+                    return Err(e.into());
+                }
+            }
         }
-
-        let info = TunnelInfo {
-            tunnel_type: "tcp".to_owned(),
-            local_addr: Some(self.local_url().into()),
-            remote_addr: Some(
-                super::build_url_from_socket_addr(&stream.peer_addr()?.to_string(), "tcp").into(),
-            ),
-        };
-
-        let (r, w) = stream.into_split();
-        Ok(Box::new(TunnelWrapper::new(
-            FramedReader::new(r, TCP_MTU_BYTES),
-            FramedWriter::new(w),
-            Some(info),
-        )))
     }
 
     fn local_url(&self) -> url::Url {