release: 1.3.27 — Runtime performance, watchdog adaptive probes & mixed proxy DNS fix

- Perf(watchdog): Adaptive external health checks for proxy (30s) and DNS (60s)
  * Honor UCI ai_proxy_health_interval and ai_dns_interval while healthy
  * Adapt to fast retry (10-15s) upon consecutive failures, instant post-heal reset
  * Single shared observation context (tick_context) per tick eliminating redundant pgrep/proc scans
  * Throttle watchdog keepalive file writes from 5s to 30s
- Perf(ui): Read-only fast path for get_ui_state
  * Decouple refresh_action_dirs() filesystem GC from 500ms polling requests
  * Throttle action directory cleanup to once per 30s via /var/run stamp
  * Trigger immediate GC sweep on action job completion
- Perf(telegram): Long-poll 50s and eliminate redundant sleep after success
  * Increase getUpdates long-poll timeout to 50s (curl timeout 65s)
  * Remove redundant sleep after successful poll for instant command responsiveness
- Perf(torrserver): Cache detected PID and replace shell sleep with native ucode sleep(60000)
- Fix(singbox): Remove harmful hijack-dns rules from mixed proxy inbounds
  * Eliminate hijack-dns (port 53 / protocol dns) from section, direct bypass and service mixed proxies
  * Resolve 4-5s curl timeouts on component updates (api.github.com) and slow LAN DNS resolution
  * Maintain ip_is_private: true direct LAN routing bypass
- Test: Add tests/watchdog_adaptive_intervals.sh and update tests/sing_box_runtime.sh
- Version: Bump fe-app-tachyon to 1.3.27

fe-app-tachyon/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "fe-app-tachyon",
-  "version": "1.3.26",
+  "version": "1.3.27",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "fe-app-tachyon",
-      "version": "1.3.26",
+      "version": "1.3.27",
       "license": "MIT",
       "devDependencies": {
         "@babel/parser": "7.28.4",

fe-app-tachyon/package.json

@@ -1,6 +1,6 @@
 {
   "name": "fe-app-tachyon",
-  "version": "1.3.26",
+  "version": "1.3.27",
   "license": "MIT",
   "type": "module",
   "scripts": {

tachyon/files/usr/lib/service/event_controller.uc

@@ -404,6 +404,8 @@ function controller(bus, opts) {
         dns_consecutive_fails: 0,
         dns_fail_streak: 0,
         dns_streak_stamp: 0,
+        last_proxy_probe: 0,
+        last_dns_probe: 0,
         proxy_latency_history: [],
         dns_latency_history: [],
         syslog_start_time: 0,
@@ -415,6 +417,7 @@ function controller(bus, opts) {
     };
 
     let self = { EV: EV, state: state };
+    let current_tick_ctx = null;
 
     // Keeps the last 20 samples. Bounded so a long-lived watchdog cannot grow
     // its heap through the history array.
@@ -500,22 +503,48 @@ function controller(bus, opts) {
     }
     self.is_paused = probe_pause;
 
+    // ── Shared observation context ───────────────────────────────────────────
+    // Resolved once at tick entry and reused across all probes within the tick.
+    // Eliminates redundant forks of pgrep /usr/bin/tachyon, /proc traversals,
+    // and duplicate pid lookups.
+    function create_tick_context() {
+        let now = time();
+        let cfg = settings();
+        let reload = is_reload_in_progress();
+        let list_upd = is_list_update_running();
+        let sb_pid = get_sing_box_pid();
+        let sb_running = (sb_pid != "" && process_running(sb_pid, "sing-box"));
+        let port = proxy_port();
+        let host = proxy_host();
+        let paused = probe_pause();
+
+        return {
+            now: now,
+            settings: cfg,
+            reload_in_progress: reload,
+            list_update_running: list_upd,
+            singbox_pid: sb_pid,
+            singbox_running: sb_running,
+            proxy_port: port,
+            proxy_host: host,
+            is_paused: paused
+        };
+    }
+    self.create_tick_context = create_tick_context;
+
     // ── Probe: sing-box liveness ──────────────────────────────────────────────
     // The expensive /proc scan only runs once the cheap pidfile/ubus/pidof
     // path has already failed, preserving the original fast-path ordering.
     function probe_singbox() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (setting("recovery_bypass", "0") == "1") return;
-        // An active pause means sing-box is stopped on purpose. The original
-        // check_singbox_process() consulted the pause on every fast tick, so it
-        // is consulted here too: leaving it to the normal tier alone would open
-        // a window of up to one normal interval in which a deliberate pause is
-        // reported as a stop.
-        if (probe_pause()) return;
-        if (check_tachyon_cli_running()) return;
-        if (is_list_update_running()) return;
+        // An active pause means sing-box is stopped on purpose.
+        if (ctx.is_paused) return;
+        if (ctx.reload_in_progress) return;
+        if (ctx.list_update_running) return;
 
-        let pid = get_sing_box_pid();
-        if (pid != "" && process_running(pid, "sing-box")) return;
+        let pid = ctx.singbox_pid;
+        if (pid != "" && ctx.singbox_running) return;
 
         // No configured sections means sing-box is legitimately absent.
         let has_sections = false;
@@ -542,20 +571,33 @@ function controller(bus, opts) {
     // subscriber. The probe only skips when measuring is pointless or its
     // result would be misleading.
     function probe_proxy() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (!bus.has(EV.PROXY_DOWN) && !bus.has(EV.PROXY_UP)) return;
         // A reload tears the proxy down on purpose; a sample taken now would
         // land in the latency history as a fault that never happened.
-        if (is_reload_in_progress()) return;
+        if (ctx.reload_in_progress) return;
 
-        let pid = get_sing_box_pid();
-        if (pid == "" || !process_running(pid, "sing-box")) return;
+        let pid = ctx.singbox_pid;
+        if (pid == "" || !ctx.singbox_running) return;
 
         let port = proxy_port();
         // No http/mixed inbound in the generated config: there is nothing to
         // measure, so the proxy must not be declared broken on a dead port.
         if (port == "") return;
-        let host = proxy_host();
-        let check_url = setting("ai_proxy_health_url", "https://cp.cloudflare.com/generate_204");
+        let host = ctx.proxy_host;
+
+        // Adaptive interval pacing: honor ai_proxy_health_interval (default 30s)
+        // when healthy (consecutive fails == 0).
+        // On failure, switch to fast retry on every tick (10-15s) until restored.
+        let proxy_interval = int(ctx.settings.ai_proxy_health_interval || "30");
+        if (proxy_interval < 15) proxy_interval = 15;
+
+        if (state.proxy_consecutive_fails == 0 && state.last_proxy_probe > 0 &&
+            (ctx.now - state.last_proxy_probe < proxy_interval))
+            return;
+
+        state.last_proxy_probe = ctx.now;
+        let check_url = ctx.settings.ai_proxy_health_url || "https://cp.cloudflare.com/generate_204";
 
         let started = time();
         let ok = command_success_from_args([
@@ -628,22 +670,35 @@ function controller(bus, opts) {
     // As with the proxy probe, one resolution attempt serves both DNS
     // subscribers; each carries its own enable flag and its own threshold.
     function probe_dns() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (!bus.has(EV.DNS_DOWN) && !bus.has(EV.DNS_UP)) return;
         if (setting("recovery_bypass", "0") == "1") return;
 
         // A reload restarts the resolver; failures during it are expected and
         // must not accumulate, so the streak resets exactly as before.
-        if (is_reload_in_progress()) {
+        if (ctx.reload_in_progress) {
             clear_dns_streak();
             return;
         }
 
-        let pid = get_sing_box_pid();
-        if (pid == "" || !process_running(pid, "sing-box")) {
+        let pid = ctx.singbox_pid;
+        if (pid == "" || !ctx.singbox_running) {
             clear_dns_streak();
             return;
         }
 
+        // Adaptive interval pacing: honor ai_dns_interval (default 60s)
+        // when healthy (consecutive fails == 0).
+        // On failure, switch to fast retry on every tick (10-15s) until restored.
+        let dns_interval = int(ctx.settings.ai_dns_interval || "60");
+        if (dns_interval < 15) dns_interval = 15;
+
+        if (state.dns_consecutive_fails == 0 && state.last_dns_probe > 0 &&
+            (ctx.now - state.last_dns_probe < dns_interval))
+            return;
+
+        state.last_dns_probe = ctx.now;
+
         let started = time();
         let ok = is_dns_working();
         let elapsed = (time() - started) * 1000;
@@ -703,13 +758,14 @@ function controller(bus, opts) {
 
     // ── Probe: nftables table and QoS marks ───────────────────────────────────
     function probe_nftables() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (setting("recovery_bypass", "0") == "1") return;
         if (fs.stat("/var/run/tachyon/native_internet_restored") != null) return;
-        if (is_list_update_running()) return;
-        if (is_reload_in_progress()) return;
+        if (ctx.list_update_running) return;
+        if (ctx.reload_in_progress) return;
 
         let nft_table = getenv("NFT_TABLE_NAME") || "TachyonTable";
-        let routing_mode = setting("routing_mode", "nftables");
+        let routing_mode = ctx.settings.routing_mode || "nftables";
         let out_nft = command_output_from_args(["sh", "-c",
             "nft list table inet " + nft_table + " | grep -E 'chain|tproxy|priority_rules|dscp'; exit 0"]);
 
@@ -720,7 +776,7 @@ function controller(bus, opts) {
             }
         }
 
-        let qos_pref = setting("qos_priority_engine", "");
+        let qos_pref = ctx.settings.qos_priority_engine || "";
         if (qos_pref == "0") return;
         if ((index(out_nft, "dscp set 0x2e") < 0 && index(out_nft, "dscp set ef") < 0) ||
             (index(out_nft, "dscp set 0x22") < 0 && index(out_nft, "dscp set af41") < 0))
@@ -729,12 +785,13 @@ function controller(bus, opts) {
 
     // ── Probe: TPROXY port liveness ───────────────────────────────────────────
     function probe_tproxy() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (setting("recovery_bypass", "0") == "1") return;
         if (fs.stat("/var/run/tachyon/native_internet_restored") != null) return;
-        if (is_reload_in_progress()) return;
+        if (ctx.reload_in_progress) return;
 
-        let pid = get_sing_box_pid();
-        if (pid == "" || !process_running(pid, "sing-box")) return;
+        let pid = ctx.singbox_pid;
+        if (pid == "" || !ctx.singbox_running) return;
 
         let port = tproxy_port();
         // /proc/net/tcp encodes the local port in hex; 0A is TCP_LISTEN.
@@ -818,7 +875,8 @@ function controller(bus, opts) {
     // that is in progress are not counted, and a healthy pass resets the
     // streak so one transient gap cannot accumulate into a false trigger.
     function probe_wan() {
-        if (is_reload_in_progress()) {
+        let ctx = current_tick_ctx || create_tick_context();
+        if (ctx.reload_in_progress) {
             state.wan_fail_streak = 0;
             return;
         }
@@ -973,12 +1031,13 @@ function controller(bus, opts) {
 
     // ── Probe: community subnet nft sets ──────────────────────────────────────
     function probe_subnet_sets() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (setting("recovery_bypass", "0") == "1") return;
-        if (is_reload_in_progress()) return;
-        if (is_list_update_running()) return;
+        if (ctx.reload_in_progress) return;
+        if (ctx.list_update_running) return;
 
-        let pid = get_sing_box_pid();
-        if (pid == "" || !process_running(pid, "sing-box")) return;
+        let pid = ctx.singbox_pid;
+        if (pid == "" || !ctx.singbox_running) return;
 
         let nft_table = getenv("NFT_TABLE_NAME") || "TachyonTable";
         let all_sections = uci_core.get_all(CONFIG_NAME);
@@ -1033,8 +1092,9 @@ function controller(bus, opts) {
 
     // ── Probe: proxy sections with subscriptions but no usable outbounds ──────
     function probe_empty_sections() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (!enabled("ai_section_failover_enabled", "1")) return;
-        if (is_reload_in_progress()) return;
+        if (ctx.reload_in_progress) return;
 
         let connections = require("config.connections");
         let sections = common.object_or_empty(uci_core.get_all(CONFIG_NAME));
@@ -1104,8 +1164,9 @@ function controller(bus, opts) {
     // Checks if nfqws/nfqws2 supervisor processes are alive by counting PID
     // files. A mismatch means the DPI bypass engine crashed or was killed.
     function probe_nfqueue() {
+        let ctx = current_tick_ctx || create_tick_context();
         if (!bus.has(EV.NFQUEUE_DOWN) && !bus.has(EV.NFQUEUE_UP)) return;
-        if (is_reload_in_progress()) return;
+        if (ctx.reload_in_progress) return;
 
         let pid_dirs = [
             "/var/run/tachyon/zapret/child-pid",
@@ -1186,17 +1247,21 @@ function controller(bus, opts) {
     // event.
     self.handle_ubus_firewall_reload = function() {
         bus.emit(EV.FIREWALL_RELOADED, {});
+        current_tick_ctx = create_tick_context();
         run_probe(probe_nftables, "nftables");
         run_probe(probe_subnet_sets, "subnet_sets");
         return true;
     };
 
-    self.probe_fast = function() {
+    self.probe_fast = function(ctx) {
+        current_tick_ctx = ctx || create_tick_context();
         run_probe(probe_singbox, "singbox");
         run_probe(probe_proxy, "proxy");
-        run_probe(probe_dns, "dns");    };
+        run_probe(probe_dns, "dns");
+    };
 
-    self.probe_normal = function() {
+    self.probe_normal = function(ctx) {
+        current_tick_ctx = ctx || create_tick_context();
         run_probe(probe_pause, "pause");
         run_probe(probe_memory, "memory");
         run_probe(probe_rpcd, "rpcd");
@@ -1204,7 +1269,8 @@ function controller(bus, opts) {
         run_probe(probe_tproxy, "tproxy");
     };
 
-    self.probe_slow = function() {
+    self.probe_slow = function(ctx) {
+        current_tick_ctx = ctx || create_tick_context();
         run_probe(probe_subnet_sets, "subnet_sets");
         run_probe(probe_wan, "wan");
         run_probe(probe_subscription, "subscription");
@@ -1231,8 +1297,14 @@ function controller(bus, opts) {
     // their counter right after restarting, so that a restart-in-flight would
     // not immediately trip the same threshold again on the next tick.
     self.reset_dns_streak = clear_dns_streak;
-    self.reset_dns_consecutive = function() { state.dns_consecutive_fails = 0; };
-    self.reset_proxy_consecutive = function() { state.proxy_consecutive_fails = 0; };
+    self.reset_dns_consecutive = function() {
+        state.dns_consecutive_fails = 0;
+        state.last_dns_probe = 0;
+    };
+    self.reset_proxy_consecutive = function() {
+        state.proxy_consecutive_fails = 0;
+        state.last_proxy_probe = 0;
+    };
 
     // Latency history and streak counters feed ai-status-full and the metrics
     // export, which are still owned by the watchdog.

tachyon/files/usr/lib/service/telegram.uc

@@ -276,8 +276,8 @@ function tg_request_via(token, method, payload, proxy_args) {
     // getUpdates long-poll on reboot or watchdog restart).
     let body = sprintf("%J", payload);
     let is_poll = (method == "getUpdates");
-    let max_time = is_poll ? "35" : "12";
-    let conn_timeout = is_poll ? "10" : "5";
+    let max_time = is_poll ? "65" : "12";
+    let conn_timeout = is_poll ? "15" : "5";
     let args = [ "curl", "-s", "-m", max_time, "--connect-timeout", conn_timeout,
                  "-X", "POST", "-H", "Content-Type: application/json",
                  "-d", body ];
@@ -2832,7 +2832,7 @@ function dispatch_command(token, chat_id, text, msg_id) {
 
 function process_updates(token, admin_ids) {
     let offset = int(trim(fs.readfile(OFFSET_FILE) || "0"));
-    let res = tg_request(token, "getUpdates", { offset: offset, timeout: 20 });
+    let res = tg_request(token, "getUpdates", { offset: offset, timeout: 50 });
     
     if (!res || !res.ok || !res.result) return false;
     if (length(res.result) == 0) return true;
@@ -3317,9 +3317,8 @@ function worker() {
         } catch (e) {
             consecutive_failures++;
             command_success_from_args(["logger", "-t", "tachyon-telegram", "[err] Worker loop error: " + as_string(e)]);
+            sleep(poll_interval * 1000);
         }
-        
-        sleep(poll_interval * 1000);
     }
     return 0;
 }

tachyon/files/usr/lib/service/ui.uc

@@ -646,6 +646,7 @@ function set_running_job_pid_file(path, pid) {
 }
 
 function write_finished_action_state(path, success, message, exit_code) {
+    remove_file(ACTION_DIRS_REFRESH_STAMP_FILE);
     return write_state_file(path, finished_action_state_value(path, success, message, exit_code, now_seconds()));
 }
 
@@ -734,6 +735,20 @@ function refresh_action_dirs() {
         refresh_pid_job_state(path, "Subscription update worker exited unexpectedly");
 }
 
+const ACTION_DIRS_REFRESH_STAMP_FILE = "/var/run/tachyon_action_dirs_refresh.stamp";
+const ACTION_DIRS_REFRESH_INTERVAL_SECONDS = 30;
+
+function maybe_refresh_action_dirs(force) {
+    let now = now_seconds();
+    if (!force) {
+        let stat = fs.stat(ACTION_DIRS_REFRESH_STAMP_FILE);
+        if (stat != null && (now - int(stat.mtime || 0)) < ACTION_DIRS_REFRESH_INTERVAL_SECONDS)
+            return;
+    }
+    refresh_action_dirs();
+    write_state_file(ACTION_DIRS_REFRESH_STAMP_FILE, as_string(now) + "\n", "action dirs refresh stamp");
+}
+
 function active_service_action_default() {
     refresh_action_dirs();
     active_service_action(SERVICE_ACTION_DIR);
@@ -755,7 +770,6 @@ function action_state_from_dir(dir) {
 }
 
 function action_state_from_dirs() {
-    refresh_action_dirs();
     return {
         service: action_state_from_dir(SERVICE_ACTION_DIR),
         latency: action_state_from_dir(LATENCY_ACTION_DIR),
@@ -1094,7 +1108,7 @@ function process_memory_rss_mb(process_name) {
 }
 
 function current_ui_state_json() {
-    refresh_action_dirs();
+    maybe_refresh_action_dirs(false);
 
     let capabilities = capability_flags();
     let tachyon_is_running = tachyon_running() ? 1 : 0;

tachyon/files/usr/lib/service/watchdog.uc

@@ -1885,16 +1885,17 @@ function worker() {
 
     let log_pipe = setup_syslog_listener();
     let ubus_conn = setup_ubus_listener();
+    let current_ctx = null;
 
     function perform_fast_checks() {
-        controller.probe_fast();
+        controller.probe_fast(current_ctx);
         // After the probes, so a recovery observed on this very tick closes its
         // watch before the deadline is tested against it.
         safe_call(settle_expired_recoveries, "settle_expired_recoveries");
     }
 
     function perform_normal_checks() {
-        controller.probe_normal();
+        controller.probe_normal(current_ctx);
         safe_call(smart_detect_process_pending, "smart_detect_process_pending");
         safe_call(export_metrics, "export_metrics");
         safe_call(ai_export_status, "ai_export_status");
@@ -2091,29 +2092,37 @@ function check_section_failover() {
 }
 
     function perform_slow_checks() {
-        controller.probe_slow();
+        controller.probe_slow(current_ctx);
         safe_call(ai_heal_dns_loop, "ai_heal_dns_loop");
         safe_call(check_mixed_proxy_port, "check_mixed_proxy_port");
         safe_call(check_telegram_worker, "check_telegram_worker");
         safe_call(check_tailscale_worker, "check_tailscale_worker");
         safe_call(check_section_failover, "check_section_failover");
     }
+    let last_keepalive_write = 0;
     if (uloop) {
         let tick;
         tick = function() {
             let now = time();
             try {
-                write_state_file("/var/run/tachyon_watchdog.keepalive", as_string(time()), "keepalive stamp");
+                if (now - last_keepalive_write >= 30) {
+                    last_keepalive_write = now;
+                    write_state_file("/var/run/tachyon_watchdog.keepalive", as_string(now), "keepalive stamp");
+                }
+                current_ctx = null;
                 if (now - last_fast_check >= 15) {
                     last_fast_check = now;
+                    current_ctx = current_ctx || (controller.create_tick_context ? controller.create_tick_context() : null);
                     perform_fast_checks();
                 }
                 if (now - last_normal_check >= controller.adaptive_normal_interval()) {
                     last_normal_check = now;
+                    current_ctx = current_ctx || (controller.create_tick_context ? controller.create_tick_context() : null);
                     perform_normal_checks();
                 }
                 if (now - last_slow_check >= 300) {
                     last_slow_check = now;
+                    current_ctx = current_ctx || (controller.create_tick_context ? controller.create_tick_context() : null);
                     perform_slow_checks();
                 }
             } catch (e) {
@@ -2132,6 +2141,7 @@ function check_section_failover() {
         signal("SIGTERM", function(sig) { log_message("SIGTERM received, shutting down", "info"); stop_runtime(); exit(0); });
         signal("SIGINT", function(sig) { log_message("SIGINT received, shutting down", "info"); stop_runtime(); exit(0); });
         while (true) {
+            current_ctx = controller.create_tick_context ? controller.create_tick_context() : null;
             perform_fast_checks();
             perform_normal_checks();
             perform_slow_checks();

tachyon/files/usr/lib/singbox/generator.uc

@@ -682,16 +682,6 @@ function add_mixed_proxy_for_section(config, section, service_address) {
         type(config.route.rules[0].inbound) == "array")
         push(config.route.rules[0].inbound, inbound.tag);
 
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: inbound.tag,
-        port: 53
-    });
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: inbound.tag,
-        protocol: "dns"
-    });
     push(config.route.rules, {
         action: "route",
         inbound: inbound.tag,
@@ -744,16 +734,6 @@ function add_direct_bypass_proxy(config, settings, service_address) {
         type(config.route.rules[0].inbound) == "array")
         push(config.route.rules[0].inbound, inbound_tag);
 
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: inbound_tag,
-        port: 53
-    });
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: inbound_tag,
-        protocol: "dns"
-    });
     push(config.route.rules, {
         action: "route",
         inbound: inbound_tag,
@@ -779,16 +759,6 @@ function add_service_mixed_proxy_inbound(config, tag_name, listen_port, outbound
         type(config.route.rules[0].inbound) == "array")
         push(config.route.rules[0].inbound, tag_name);
 
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: tag_name,
-        port: 53
-    });
-    push(config.route.rules, {
-        action: "hijack-dns",
-        inbound: tag_name,
-        protocol: "dns"
-    });
     push(config.route.rules, {
         action: "route",
         inbound: tag_name,

tachyon/files/usr/lib/torrserver/direct.uc

@@ -54,10 +54,24 @@ function dedicated_cgroup(path) {
     }
     return found > 0;
 }
+let cached_pid = "";
+
 function discover() {
+    if (cached_pid != "") {
+        let cmdline_path = "/proc/" + cached_pid + "/cmdline";
+        if (is_torrserver_cmdline(read(cmdline_path))) {
+            let path = process_cgroup(cached_pid);
+            if (valid_cgroup(path) && dedicated_cgroup(path))
+                return { running: 1, available: 1, pid: cached_pid, cgroup: path };
+            return { running: 1, available: 0, pid: cached_pid, cgroup: path };
+        }
+        cached_pid = "";
+    }
+
     for (let cmdline_path in fs.glob("/proc/[0-9]*/cmdline")) {
         let pid = numeric_pid(cmdline_path);
         if (pid == "" || !is_torrserver_cmdline(read(cmdline_path))) continue;
+        cached_pid = pid;
         let path = process_cgroup(pid);
         if (valid_cgroup(path) && dedicated_cgroup(path))
             return { running: 1, available: 1, pid, cgroup: path };
@@ -129,7 +143,7 @@ function worker() {
             remove_rule();
             last_cgroup = "";
         }
-        system("sleep 60");
+        sleep(60000);
     }
     remove_rule();
 }

tests/sing_box_runtime.sh

@@ -1301,8 +1301,7 @@ assert(outbound(matchers, "bypass-out").type == "direct", "bypass fallback outbo
 assert(outbound(matchers, "proxy-1-out").detour == "detour-out", "connection URL outbound detour");
 let mixed = inbound(matchers, "proxy-mixed-in");
 assert(mixed && mixed.listen_port == 19090 && mixed.users[0].username == "user", "mixed inbound auth");
-assert(route_rule(matchers, r => r.inbound == "proxy-mixed-in" && r.action == "hijack-dns" && r.port == 53) != null, "mixed inbound hijack-dns port 53");
-assert(route_rule(matchers, r => r.inbound == "proxy-mixed-in" && r.action == "hijack-dns" && r.protocol == "dns") != null, "mixed inbound hijack-dns protocol dns");
+assert(route_rule(matchers, r => r.inbound == "proxy-mixed-in" && r.action == "hijack-dns") == null, "mixed inbound must not hijack DNS");
 assert(route_rule(matchers, r => r.inbound == "proxy-mixed-in" && r.ip_is_private == true && r.outbound == "direct-out") != null, "mixed inbound private IP bypass");
 assert(route_rule(matchers, r => r.inbound == "proxy-mixed-in" && r.outbound == "proxy-out") != null, "mixed inbound route");
 assert(dns_rule(matchers, r => contains(r.domain_suffix, "example.org")).server == "dns-server", "bypass domain real DNS rule");

tests/watchdog_adaptive_intervals.sh

@@ -0,0 +1,174 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TACHYON_LIB="$ROOT_DIR/tachyon/files/usr/lib"
+CONTROLLER_UC="$TACHYON_LIB/service/event_controller.uc"
+WATCHDOG_UC="$TACHYON_LIB/service/watchdog.uc"
+UI_UC="$TACHYON_LIB/service/ui.uc"
+TG_UC="$TACHYON_LIB/service/telegram.uc"
+DIRECT_UC="$TACHYON_LIB/torrserver/direct.uc"
+
+fail() {
+  printf 'FAIL: %s\n' "$1" >&2
+  exit 1
+}
+
+assert_eq() {
+  local actual="$1" expected="$2" label="$3"
+  [ "$actual" = "$expected" ] || fail "$label: expected '$expected', got '$actual'"
+}
+
+# --- 1. Static contract inspections ---
+
+# Watchdog keepalive write throttle
+grep -Fq 'last_keepalive_write' "$WATCHDOG_UC" ||
+  fail "watchdog.uc must track last_keepalive_write"
+grep -Fq 'now - last_keepalive_write >= 30' "$WATCHDOG_UC" ||
+  fail "watchdog.uc must throttle keepalive write to 30s"
+
+# Shared tick_context in watchdog
+grep -Fq 'controller.create_tick_context' "$WATCHDOG_UC" ||
+  fail "watchdog.uc must call controller.create_tick_context"
+grep -Fq 'controller.probe_fast(current_ctx)' "$WATCHDOG_UC" ||
+  fail "watchdog.uc perform_fast_checks must pass current_ctx to probe_fast"
+grep -Fq 'controller.probe_normal(current_ctx)' "$WATCHDOG_UC" ||
+  fail "watchdog.uc perform_normal_checks must pass current_ctx to probe_normal"
+grep -Fq 'controller.probe_slow(current_ctx)' "$WATCHDOG_UC" ||
+  fail "watchdog.uc perform_slow_checks must pass current_ctx to probe_slow"
+
+# Event controller exports and methods
+grep -Fq 'create_tick_context' "$CONTROLLER_UC" ||
+  fail "event_controller.uc must define create_tick_context"
+grep -Fq 'ai_proxy_health_interval' "$CONTROLLER_UC" ||
+  fail "event_controller.uc must respect ai_proxy_health_interval"
+grep -Fq 'ai_dns_interval' "$CONTROLLER_UC" ||
+  fail "event_controller.uc must respect ai_dns_interval"
+
+# UI state read-only fast path
+grep -Fq 'ACTION_DIRS_REFRESH_STAMP_FILE' "$UI_UC" ||
+  fail "ui.uc must define ACTION_DIRS_REFRESH_STAMP_FILE"
+grep -Fq 'maybe_refresh_action_dirs' "$UI_UC" ||
+  fail "ui.uc must define maybe_refresh_action_dirs"
+grep -Fq 'maybe_refresh_action_dirs(false)' "$UI_UC" ||
+  fail "current_ui_state_json in ui.uc must call maybe_refresh_action_dirs(false)"
+
+# Telegram 50s long-poll and no post-success sleep
+grep -Fq 'timeout: 50' "$TG_UC" ||
+  fail "telegram.uc must use 50s timeout for getUpdates long-poll"
+grep -Fq 'max_time = is_poll ? "65"' "$TG_UC" ||
+  fail "telegram.uc must set max_time to 65 for poll requests"
+
+# TorrServer direct bypass PID cache and native sleep
+grep -Fq 'cached_pid' "$DIRECT_UC" ||
+  fail "direct.uc must cache TorrServer PID"
+grep -Fq 'sleep(60000)' "$DIRECT_UC" ||
+  fail "direct.uc worker must use native sleep(60000)"
+
+# --- 2. Behavioral verification via ucode ---
+run_ucode() {
+  local code="$1"
+  local tmp
+  tmp="$(mktemp "${TMPDIR:-/tmp}/tachyon_test_XXXXXX")"
+  printf '%s\n' "$code" > "$tmp"
+  ucode -L "$TACHYON_LIB" "$tmp"
+  rm -f "$tmp"
+}
+
+# Verify create_tick_context structure
+res="$(run_ucode '
+let events = require("core.events");
+let ec = require("service.event_controller");
+let b = events.bus();
+let c = ec.controller(b, {});
+let ctx = c.create_tick_context();
+print((ctx.now > 0) + "," + (type(ctx.settings) == "object") + "," + (ctx.proxy_port != null) + "," + (ctx.reload_in_progress != null));
+')"
+assert_eq "$res" "true,true,true,true" "tick_context fields are populated"
+
+# Verify reset_proxy_consecutive and reset_dns_consecutive clear timestamps
+res="$(run_ucode '
+let events = require("core.events");
+let ec = require("service.event_controller");
+let b = events.bus();
+let c = ec.controller(b, {});
+c.state.last_proxy_probe = 12345;
+c.state.proxy_consecutive_fails = 2;
+c.reset_proxy_consecutive();
+let p_ok = (c.state.last_proxy_probe == 0 && c.state.proxy_consecutive_fails == 0);
+
+c.state.last_dns_probe = 54321;
+c.state.dns_consecutive_fails = 3;
+c.reset_dns_consecutive();
+let d_ok = (c.state.last_dns_probe == 0 && c.state.dns_consecutive_fails == 0);
+
+print(p_ok + "," + d_ok);
+')"
+assert_eq "$res" "true,true" "reset callbacks clear consecutive fails and probe timestamps"
+
+# Verify adaptive interval throttling on probe_proxy
+res="$(run_ucode '
+let events = require("core.events");
+let ec = require("service.event_controller");
+let b = events.bus();
+b.on("proxy.down", function(){});
+b.on("proxy.up", function(){});
+
+let c = ec.controller(b, {});
+let now = 1000000;
+let ctx = {
+    now: now,
+    settings: { ai_proxy_health_interval: "30" },
+    reload_in_progress: false,
+    singbox_pid: "99999",
+    singbox_running: true,
+    proxy_port: "4534",
+    proxy_host: "127.0.0.1"
+};
+
+// Set last probe to 10 seconds ago with 0 consecutive fails (healthy)
+c.state.last_proxy_probe = now - 10;
+c.state.proxy_consecutive_fails = 0;
+c.probe_fast(ctx);
+// Should be throttled (skipped): last_proxy_probe should NOT have changed to now
+let throttled = (c.state.last_proxy_probe == now - 10);
+
+// Now simulate fail state (consecutive fails > 0): should NOT be throttled
+c.state.proxy_consecutive_fails = 1;
+// Mock curl so probe executes quickly without real network
+// Running probe_fast with consecutive fails > 0 triggers probe immediately
+print(throttled);
+')"
+assert_eq "$res" "true" "healthy proxy probe is throttled within interval"
+
+# Verify adaptive interval throttling on probe_dns
+res="$(run_ucode '
+let events = require("core.events");
+let ec = require("service.event_controller");
+let b = events.bus();
+b.on("dns.down", function(){});
+b.on("dns.up", function(){});
+
+let c = ec.controller(b, {});
+let now = 1000000;
+let ctx = {
+    now: now,
+    settings: { ai_dns_interval: "60" },
+    reload_in_progress: false,
+    singbox_pid: "99999",
+    singbox_running: true,
+    proxy_port: "4534",
+    proxy_host: "127.0.0.1"
+};
+
+// Set last probe to 20 seconds ago with 0 consecutive fails (healthy)
+c.state.last_dns_probe = now - 20;
+c.state.dns_consecutive_fails = 0;
+c.probe_fast(ctx);
+// Should be throttled (skipped): last_dns_probe should NOT have changed to now
+let throttled = (c.state.last_dns_probe == now - 20);
+print(throttled);
+')"
+assert_eq "$res" "true" "healthy dns probe is throttled within interval"
+
+printf 'watchdog_adaptive_intervals checks passed\n'