434 lines
17 KiB
Rust
434 lines
17 KiB
Rust
//! telemt — Telegram MTProto Proxy
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use std::net::SocketAddr;
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use std::sync::Arc;
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use std::time::Duration;
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use tokio::net::TcpListener;
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use tokio::signal;
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use tokio::sync::Semaphore;
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use tracing::{info, error, warn, debug};
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use tracing_subscriber::{fmt, EnvFilter, reload, prelude::*};
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mod cli;
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mod config;
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mod crypto;
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mod error;
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mod protocol;
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mod proxy;
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mod stats;
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mod stream;
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mod transport;
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mod util;
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use crate::config::{ProxyConfig, LogLevel};
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use crate::proxy::ClientHandler;
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use crate::stats::{Stats, ReplayChecker};
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use crate::crypto::SecureRandom;
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use crate::transport::{create_listener, ListenOptions, UpstreamManager};
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use crate::transport::middle_proxy::MePool;
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use crate::util::ip::detect_ip;
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use crate::stream::BufferPool;
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fn parse_cli() -> (String, bool, Option<String>) {
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let mut config_path = "config.toml".to_string();
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let mut silent = false;
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let mut log_level: Option<String> = None;
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let args: Vec<String> = std::env::args().skip(1).collect();
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// Check for --init first (handled before tokio)
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if let Some(init_opts) = cli::parse_init_args(&args) {
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if let Err(e) = cli::run_init(init_opts) {
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eprintln!("[telemt] Init failed: {}", e);
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std::process::exit(1);
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}
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std::process::exit(0);
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}
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let mut i = 0;
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while i < args.len() {
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match args[i].as_str() {
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"--silent" | "-s" => { silent = true; }
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"--log-level" => {
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i += 1;
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if i < args.len() { log_level = Some(args[i].clone()); }
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}
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s if s.starts_with("--log-level=") => {
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log_level = Some(s.trim_start_matches("--log-level=").to_string());
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}
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"--help" | "-h" => {
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eprintln!("Usage: telemt [config.toml] [OPTIONS]");
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eprintln!();
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eprintln!("Options:");
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eprintln!(" --silent, -s Suppress info logs");
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eprintln!(" --log-level <LEVEL> debug|verbose|normal|silent");
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eprintln!(" --help, -h Show this help");
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eprintln!();
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eprintln!("Setup (fire-and-forget):");
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eprintln!(" --init Generate config, install systemd service, start");
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eprintln!(" --port <PORT> Listen port (default: 443)");
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eprintln!(" --domain <DOMAIN> TLS domain for masking (default: www.google.com)");
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eprintln!(" --secret <HEX> 32-char hex secret (auto-generated if omitted)");
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eprintln!(" --user <NAME> Username (default: user)");
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eprintln!(" --config-dir <DIR> Config directory (default: /etc/telemt)");
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eprintln!(" --no-start Don't start the service after install");
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std::process::exit(0);
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}
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s if !s.starts_with('-') => { config_path = s.to_string(); }
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other => { eprintln!("Unknown option: {}", other); }
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}
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i += 1;
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}
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(config_path, silent, log_level)
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}
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#[tokio::main]
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async fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
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let (config_path, cli_silent, cli_log_level) = parse_cli();
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let config = match ProxyConfig::load(&config_path) {
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Ok(c) => c,
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Err(e) => {
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if std::path::Path::new(&config_path).exists() {
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eprintln!("[telemt] Error: {}", e);
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std::process::exit(1);
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} else {
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let default = ProxyConfig::default();
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std::fs::write(&config_path, toml::to_string_pretty(&default).unwrap()).unwrap();
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eprintln!("[telemt] Created default config at {}", config_path);
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default
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}
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}
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};
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if let Err(e) = config.validate() {
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eprintln!("[telemt] Invalid config: {}", e);
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std::process::exit(1);
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}
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let has_rust_log = std::env::var("RUST_LOG").is_ok();
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let effective_log_level = if cli_silent {
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LogLevel::Silent
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} else if let Some(ref s) = cli_log_level {
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LogLevel::from_str_loose(s)
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} else {
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config.general.log_level.clone()
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};
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let (filter_layer, filter_handle) = reload::Layer::new(EnvFilter::new("info"));
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tracing_subscriber::registry()
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.with(filter_layer)
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.with(fmt::Layer::default())
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.init();
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info!("Telemt MTProxy v{}", env!("CARGO_PKG_VERSION"));
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info!("Log level: {}", effective_log_level);
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info!("Modes: classic={} secure={} tls={}",
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config.general.modes.classic,
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config.general.modes.secure,
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config.general.modes.tls);
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info!("TLS domain: {}", config.censorship.tls_domain);
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if let Some(ref sock) = config.censorship.mask_unix_sock {
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info!("Mask: {} -> unix:{}", config.censorship.mask, sock);
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if !std::path::Path::new(sock).exists() {
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warn!("Unix socket '{}' does not exist yet. Masking will fail until it appears.", sock);
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}
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} else {
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info!("Mask: {} -> {}:{}",
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config.censorship.mask,
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config.censorship.mask_host.as_deref().unwrap_or(&config.censorship.tls_domain),
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config.censorship.mask_port);
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}
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if config.censorship.tls_domain == "www.google.com" {
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warn!("Using default tls_domain. Consider setting a custom domain.");
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}
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let prefer_ipv6 = config.general.prefer_ipv6;
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let use_middle_proxy = config.general.use_middle_proxy;
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let config = Arc::new(config);
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let stats = Arc::new(Stats::new());
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let rng = Arc::new(SecureRandom::new());
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let replay_checker = Arc::new(ReplayChecker::new(
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config.access.replay_check_len,
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Duration::from_secs(config.access.replay_window_secs),
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));
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let upstream_manager = Arc::new(UpstreamManager::new(config.upstreams.clone()));
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let buffer_pool = Arc::new(BufferPool::with_config(16 * 1024, 4096));
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// Connection concurrency limit
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let _max_connections = Arc::new(Semaphore::new(10_000));
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// =====================================================================
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// Middle Proxy initialization (if enabled)
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// =====================================================================
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let me_pool: Option<Arc<MePool>> = if use_middle_proxy {
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info!("=== Middle Proxy Mode ===");
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// ad_tag (proxy_tag) for advertising
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let proxy_tag = config.general.ad_tag.as_ref().map(|tag| {
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hex::decode(tag).unwrap_or_else(|_| {
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warn!("Invalid ad_tag hex, middle proxy ad_tag will be empty");
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Vec::new()
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})
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});
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// =============================================================
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// CRITICAL: Download Telegram proxy-secret (NOT user secret!)
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//
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// C MTProxy uses TWO separate secrets:
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// -S flag = 16-byte user secret for client obfuscation
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// --aes-pwd = 32-512 byte binary file for ME RPC auth
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//
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// proxy-secret is from: https://core.telegram.org/getProxySecret
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// =============================================================
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let proxy_secret_path = config.general.proxy_secret_path.as_deref();
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match crate::transport::middle_proxy::fetch_proxy_secret(proxy_secret_path).await {
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Ok(proxy_secret) => {
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info!(
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secret_len = proxy_secret.len(),
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key_sig = format_args!("0x{:08x}",
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if proxy_secret.len() >= 4 {
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u32::from_le_bytes([proxy_secret[0], proxy_secret[1],
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proxy_secret[2], proxy_secret[3]])
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} else { 0 }),
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"Proxy-secret loaded"
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);
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let pool = MePool::new(proxy_tag, proxy_secret);
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match pool.init(2, &rng).await {
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Ok(()) => {
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info!("Middle-End pool initialized successfully");
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// Phase 4: Start health monitor
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let pool_clone = pool.clone();
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let rng_clone = rng.clone();
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tokio::spawn(async move {
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crate::transport::middle_proxy::me_health_monitor(
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pool_clone, rng_clone, 2,
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).await;
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});
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Some(pool)
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}
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Err(e) => {
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error!(error = %e, "Failed to initialize ME pool. Falling back to direct mode.");
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None
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}
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}
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}
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Err(e) => {
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error!(error = %e, "Failed to fetch proxy-secret. Falling back to direct mode.");
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None
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}
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}
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} else {
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None
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};
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if me_pool.is_some() {
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info!("Transport: Middle Proxy (supports all DCs including CDN)");
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} else {
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info!("Transport: Direct TCP (standard DCs only)");
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}
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// Startup DC ping (only meaningful in direct mode)
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if me_pool.is_none() {
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info!("================= Telegram DC Connectivity =================");
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let ping_results = upstream_manager.ping_all_dcs(prefer_ipv6).await;
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for upstream_result in &ping_results {
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// Show which IP version is in use and which is fallback
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if upstream_result.both_available {
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if prefer_ipv6 {
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info!(" IPv6 in use and IPv4 is fallback");
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} else {
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info!(" IPv4 in use and IPv6 is fallback");
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}
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} else {
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let v6_works = upstream_result.v6_results.iter().any(|r| r.rtt_ms.is_some());
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let v4_works = upstream_result.v4_results.iter().any(|r| r.rtt_ms.is_some());
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if v6_works && !v4_works {
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info!(" IPv6 only (IPv4 unavailable)");
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} else if v4_works && !v6_works {
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info!(" IPv4 only (IPv6 unavailable)");
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} else if !v6_works && !v4_works {
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info!(" No connectivity!");
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}
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}
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info!(" via {}", upstream_result.upstream_name);
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info!("============================================================");
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// Print IPv6 results first
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for dc in &upstream_result.v6_results {
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let addr_str = format!("{}:{}", dc.dc_addr.ip(), dc.dc_addr.port());
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match &dc.rtt_ms {
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Some(rtt) => {
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// Align: IPv6 addresses are longer, use fewer tabs
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// [2001:b28:f23d:f001::a]:443 = ~28 chars
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info!(" DC{} [IPv6] {}:\t\t{:.0} ms", dc.dc_idx, addr_str, rtt);
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}
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None => {
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let err = dc.error.as_deref().unwrap_or("fail");
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info!(" DC{} [IPv6] {}:\t\tFAIL ({})", dc.dc_idx, addr_str, err);
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}
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}
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}
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info!("============================================================");
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// Print IPv4 results
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for dc in &upstream_result.v4_results {
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let addr_str = format!("{}:{}", dc.dc_addr.ip(), dc.dc_addr.port());
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match &dc.rtt_ms {
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Some(rtt) => {
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// Align: IPv4 addresses are shorter, use more tabs
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// 149.154.175.50:443 = ~18 chars
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info!(" DC{} [IPv4] {}:\t\t\t\t{:.0} ms", dc.dc_idx, addr_str, rtt);
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}
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None => {
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let err = dc.error.as_deref().unwrap_or("fail");
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info!(" DC{} [IPv4] {}:\t\t\t\tFAIL ({})", dc.dc_idx, addr_str, err);
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}
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}
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}
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info!("============================================================");
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}
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}
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// Background tasks
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let um_clone = upstream_manager.clone();
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tokio::spawn(async move { um_clone.run_health_checks(prefer_ipv6).await; });
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let rc_clone = replay_checker.clone();
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tokio::spawn(async move { rc_clone.run_periodic_cleanup().await; });
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let detected_ip = detect_ip().await;
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debug!("Detected IPs: v4={:?} v6={:?}", detected_ip.ipv4, detected_ip.ipv6);
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let mut listeners = Vec::new();
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for listener_conf in &config.server.listeners {
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let addr = SocketAddr::new(listener_conf.ip, config.server.port);
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let options = ListenOptions {
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ipv6_only: listener_conf.ip.is_ipv6(),
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..Default::default()
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};
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match create_listener(addr, &options) {
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Ok(socket) => {
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let listener = TcpListener::from_std(socket.into())?;
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info!("Listening on {}", addr);
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let public_ip = if let Some(ip) = listener_conf.announce_ip {
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ip
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} else if listener_conf.ip.is_unspecified() {
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if listener_conf.ip.is_ipv4() {
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detected_ip.ipv4.unwrap_or(listener_conf.ip)
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} else {
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detected_ip.ipv6.unwrap_or(listener_conf.ip)
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}
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} else {
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listener_conf.ip
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};
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if !config.show_link.is_empty() {
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info!("--- Proxy Links ({}) ---", public_ip);
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for user_name in &config.show_link {
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if let Some(secret) = config.access.users.get(user_name) {
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info!("User: {}", user_name);
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if config.general.modes.classic {
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info!(" Classic: tg://proxy?server={}&port={}&secret={}",
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public_ip, config.server.port, secret);
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}
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if config.general.modes.secure {
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info!(" DD: tg://proxy?server={}&port={}&secret=dd{}",
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public_ip, config.server.port, secret);
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}
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if config.general.modes.tls {
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let domain_hex = hex::encode(&config.censorship.tls_domain);
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info!(" EE-TLS: tg://proxy?server={}&port={}&secret=ee{}{}",
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public_ip, config.server.port, secret, domain_hex);
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}
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} else {
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warn!("User '{}' in show_link not found", user_name);
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}
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}
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info!("------------------------");
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}
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listeners.push(listener);
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},
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Err(e) => {
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error!("Failed to bind to {}: {}", addr, e);
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}
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}
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}
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if listeners.is_empty() {
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error!("No listeners. Exiting.");
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std::process::exit(1);
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}
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// Switch to user-configured log level after startup
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let runtime_filter = if has_rust_log {
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EnvFilter::from_default_env()
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} else {
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EnvFilter::new(effective_log_level.to_filter_str())
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};
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filter_handle.reload(runtime_filter).expect("Failed to switch log filter");
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for listener in listeners {
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let config = config.clone();
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let stats = stats.clone();
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let upstream_manager = upstream_manager.clone();
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let replay_checker = replay_checker.clone();
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let buffer_pool = buffer_pool.clone();
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let rng = rng.clone();
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let me_pool = me_pool.clone();
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tokio::spawn(async move {
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loop {
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match listener.accept().await {
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Ok((stream, peer_addr)) => {
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let config = config.clone();
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let stats = stats.clone();
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let upstream_manager = upstream_manager.clone();
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let replay_checker = replay_checker.clone();
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let buffer_pool = buffer_pool.clone();
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let rng = rng.clone();
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let me_pool = me_pool.clone();
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tokio::spawn(async move {
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if let Err(e) = ClientHandler::new(
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stream, peer_addr, config, stats,
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upstream_manager, replay_checker, buffer_pool, rng,
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me_pool,
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).run().await {
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debug!(peer = %peer_addr, error = %e, "Connection error");
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}
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});
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}
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Err(e) => {
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error!("Accept error: {}", e);
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tokio::time::sleep(Duration::from_millis(100)).await;
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}
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}
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}
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});
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}
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match signal::ctrl_c().await {
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Ok(()) => info!("Shutting down..."),
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Err(e) => error!("Signal error: {}", e),
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}
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Ok(())
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} |