fix: revert etcp_link_update_inflight_lim + BBR callback in etcp_link_new

52f32da replaced direct inflight_lim_bytes assignment and inline
optimal_inflight recalculation with etcp_link_update_inflight_lim()
+ BBR on_cwnd_update callback. This broke test_etcp_reconnect
(flaky FAIL in phase 4, recv=0 after server restart).

Revert etcp_connections.c/h back to inline init. Keep BBR callback
infrastructure (etcp_bbr.c/h) and IPv6/sockaddr changes
(config_parser, utun_instance) which are harmless.

lib/Makefile.am

@@ -7,8 +7,8 @@ libuasync_a_SOURCES = \
 	ll_queue.c \
 	debug_config.c \
 	debug_config.h \
-	timeout_heap.c \
-	timeout_heap.h \
+	twheel.c \
+	twheel.h \
 	memory_pool.c \
 	memory_pool.h \
 	sha256.c \

lib/debug_config.c

@@ -13,30 +13,29 @@
 #include <stdio.h>
 #include <time.h>
 
-void log_dump(const char* prefix, const uint8_t* data, size_t len) {
+void log_dump(int level, int category, const char* prefix, const uint8_t* data, size_t len) {
+    if (!debug_should_output(level, category)) return;
+
     char hex_buf[513] = {'\0'};
     size_t hex_len = 0;
     size_t show_len = (len > 128) ? 128 : len;
 
     for (size_t i = 0; i < show_len && hex_len < 512 - 3; i++) {
         hex_len += snprintf(hex_buf + hex_len, sizeof(hex_buf) - hex_len, "%02x", data[i]);
-        if (i < show_len - 1 && (i + 1) % 32 == 0) { // Add space every 32 bytes
+        if (i < show_len - 1 && (i + 1) % 32 == 0)
             hex_len += snprintf(hex_buf + hex_len, sizeof(hex_buf) - hex_len, " ");
-        }
     }
 
-    if (len > 128) {
+    if (len > 128)
         hex_len += snprintf(hex_buf + hex_len, sizeof(hex_buf) - hex_len, "...");
+
+    switch (level) {
+    case DEBUG_LEVEL_ERROR: DEBUG_ERROR(category, "%s: len=%zu hex=%s", prefix, len, hex_buf); break;
+    case DEBUG_LEVEL_WARN:  DEBUG_WARN(category, "%s: len=%zu hex=%s", prefix, len, hex_buf); break;
+    case DEBUG_LEVEL_INFO:  DEBUG_INFO(category, "%s: len=%zu hex=%s", prefix, len, hex_buf); break;
+    case DEBUG_LEVEL_DEBUG: DEBUG_DEBUG(category, "%s: len=%zu hex=%s", prefix, len, hex_buf); break;
+    case DEBUG_LEVEL_TRACE: DEBUG_TRACE(category, "%s: len=%zu hex=%s", prefix, len, hex_buf); break;
     }
-    
-    // Single-line debug output with packet info
-    DEBUG_INFO(DEBUG_CATEGORY_DUMP, "%s: len=%zu hex=%s", prefix, len, hex_buf);
-    
-    // Additional debug info for first few bytes
-//    if (len >= 2) {
-//        DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "%s: first_bytes=%02x%02x last_bytes=%02x%02x", 
-//                   prefix, data[0], data[1], data[len-2], data[len-1]);
-//    }
 }
 
 

lib/debug_config.h

@@ -123,7 +123,7 @@ ip_str_t ip_to_str(const void *addr, int family);// big endian addr
 ip_str_t sockaddr_storage_to_str(const struct sockaddr_storage *addr);// автоопределение v4 или v6
 
 // hex dump в лог
-void log_dump(const char* prefix, const uint8_t* data, size_t len);
+void log_dump(int level, int category, const char* prefix, const uint8_t* data, size_t len);
 
 /* Check if debug output should be shown for given level and category */
 int debug_should_output(debug_level_t level, debug_category_t category_idx);

lib/ll_queue.c

@@ -308,7 +308,7 @@ static void waiter_defer_cb(void* arg) {
     h->defer_cb(h->defer_q, h->defer_arg);
 }
 
-inline void queue_waiter_call(struct ll_queue* q, queue_threshold_callback_fn cb, void* arg,
+static inline void queue_waiter_call(struct ll_queue* q, queue_threshold_callback_fn cb, void* arg,
                                struct queue_waiter_handle* h) {
     if (q->waiter_defer) {
         h->defer_q = q; h->defer_cb = cb; h->defer_arg = arg;

lib/memory_pool.c

@@ -5,31 +5,43 @@
 #include "memory_pool.h"
 #include "mem.h"
 
-#define POOL_CANARY_OFF  (pool->object_size)
-#define POOL_TAG_OFF     (pool->object_size + 1)
-#define POOL_ALLOC_SIZE  (pool->object_size + 2)
-#define POOL_CANARY_VAL  0xAA
+// Layout: [user_data: object_size] [canary: 4 bytes] [alloc_loc: pointer] [counter: 1 byte]
+#define POOL_CANARY_OFF   (pool->object_size)
+#define POOL_LOC_OFF      (pool->object_size + 4)
+#define POOL_COUNTER_OFF  (pool->object_size + 4 + sizeof(const char*))
+#define POOL_ALLOC_SIZE   (pool->object_size + 4 + sizeof(const char*) + 1)
+#define POOL_CANARY_VAL   0xDEADBEAF
 
-static void pool_init_tags(struct memory_pool* pool, void* obj)
+static void pool_init_tags(struct memory_pool* pool, void* obj, const char* location)
 {
-    uint8_t* canary  = (uint8_t*)obj + POOL_CANARY_OFF;
-    uint8_t* counter = (uint8_t*)obj + POOL_TAG_OFF;
+    uint32_t* canary  = (uint32_t*)((uint8_t*)obj + POOL_CANARY_OFF);
+    const char** loc  = (const char**)((uint8_t*)obj + POOL_LOC_OFF);
+    uint8_t*  counter = (uint8_t*)obj + POOL_COUNTER_OFF;
     *canary  = POOL_CANARY_VAL;
+    *loc     = location;
     *counter = 1;
 }
 
 static void pool_check_and_clear_tags(struct memory_pool* pool, void* obj, const char* location)
 {
-    uint8_t* canary  = (uint8_t*)obj + POOL_CANARY_OFF;
-    uint8_t* counter = (uint8_t*)obj + POOL_TAG_OFF;
+    uint32_t*    canary  = (uint32_t*)((uint8_t*)obj + POOL_CANARY_OFF);
+    const char** loc     = (const char**)((uint8_t*)obj + POOL_LOC_OFF);
+    uint8_t*     counter = (uint8_t*)obj + POOL_COUNTER_OFF;
 
     if (*canary != POOL_CANARY_VAL) {
-        DEBUG_ERROR(DEBUG_CATEGORY_MEMORY, "pool_free BUFFER OVERFLOW %p canary=0x%02x from %s! halting", obj, *canary, location);
+        DEBUG_ERROR(DEBUG_CATEGORY_MEMORY, "pool_free BUFFER OVERFLOW pool=%p name=%s sz=%zu allocs=%zu reuse=%zu free=%d",
+                    pool, pool->name ? pool->name : "?", pool->object_size, pool->allocations, pool->reuse_count, pool->free_count);
+        DEBUG_ERROR(DEBUG_CATEGORY_MEMORY, "  obj=%p alloc=%s free=%s canary=0x%08x expected=0x%08x",
+                    obj, *loc ? *loc : "(null)", location, *canary, POOL_CANARY_VAL);
+        if (pool->object_size)
+            log_dump(DEBUG_LEVEL_ERROR, DEBUG_CATEGORY_MEMORY, "  user_data", obj, pool->object_size);
         volatile int _halt = 1;
         while (_halt) {}
     }
     if (*counter == 0) {
-        DEBUG_ERROR(DEBUG_CATEGORY_MEMORY, "pool_free DOUBLE FREE %p from %s! halting", obj, location);
+        DEBUG_ERROR(DEBUG_CATEGORY_MEMORY, "pool_free DOUBLE FREE pool=%p name=%s sz=%zu allocs=%zu reuse=%zu alloc=%s free=%s",
+                    pool, pool->name ? pool->name : "?", pool->object_size, pool->allocations, pool->reuse_count,
+                    *loc ? *loc : "(null)", location);
         volatile int _halt = 1;
         while (_halt) {}
     }
@@ -43,7 +55,7 @@ size_t memory_pool_get_total_free_blocks(void) {
 }
 
 // Инициализировать пул памяти
-struct memory_pool* memory_pool_init(size_t object_size) {
+struct memory_pool* memory_pool_init(size_t object_size, const char* name) {
     struct memory_pool* pool = u_calloc(1, sizeof(struct memory_pool));
     if (!pool) {
         return NULL;
@@ -54,6 +66,7 @@ struct memory_pool* memory_pool_init(size_t object_size) {
     pool->allocations = 0;
     pool->reuse_count = 0;
     pool->alloc_tag_counter = 1;
+    pool->name = name;
     return pool;
 }
 
@@ -70,7 +83,7 @@ void* memory_pool_alloc_impl(struct memory_pool* pool, const char* location) {
         g_total_free--;
         pool->reuse_count++;
         memset(obj, 0, pool->object_size);
-        pool_init_tags(pool, obj);
+        pool_init_tags(pool, obj, location);
         DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "pool_alloc reused: %s, remaining=%zu", location, pool->free_count);
         return obj;
     }
@@ -78,7 +91,7 @@ void* memory_pool_alloc_impl(struct memory_pool* pool, const char* location) {
     pool->allocations++;
     DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "pool_alloc: %s, total_allocs=%zu", location, pool->allocations);
     void* obj = u_calloc_impl(1, POOL_ALLOC_SIZE, location);
-    if (obj) pool_init_tags(pool, obj);
+    if (obj) pool_init_tags(pool, obj, location);
     return obj;
 }
 

lib/memory_pool.h

@@ -18,11 +18,12 @@ struct memory_pool {
     size_t allocations;         // Общее количество аллокаций (включая новые malloc)
     size_t reuse_count;         // Количество повторных использований из пула
     uint8_t alloc_tag_counter;  // монотонный счётчик для детекции double-free (1 байт)
+    const char* name;           // Имя пула для диагностики (напр. "data_pool", "pkt_pool")
 };
 
 // сам пул:
 // если используем с элементами ll_queue то не забываем что к object_size надо прибавить sizeof(struct ll_entry)
-struct memory_pool* memory_pool_init(size_t object_size);
+struct memory_pool* memory_pool_init(size_t object_size, const char* name);
 void memory_pool_destroy(struct memory_pool* pool);
 
 // элементы пула:

lib/tcp_io.c

@@ -46,10 +46,10 @@ struct tcp_conn* tcp_conn_create(
     tc->on_error = on_error;
     tc->arg = arg;
 
-    tc->entry_pool = memory_pool_init(sizeof(struct ll_entry));
+    tc->entry_pool = memory_pool_init(sizeof(struct ll_entry), "entry_pool");
     {
         size_t ds = entry_data_size > write_chunk_size ? entry_data_size : write_chunk_size;
-        tc->data_pool = memory_pool_init(ds);
+        tc->data_pool = memory_pool_init(ds, "data_pool");
     }
     if (!tc->entry_pool || !tc->data_pool) {
         DEBUG_ERROR(DEBUG_CATEGORY_SOCKET, "tcp_conn_create: memory_pool_init failed");

lib/timeout_heap.c

@@ -1,193 +0,0 @@
-// timeout_heap.c
-
-#include "timeout_heap.h"
-#include "debug_config.h"
-#include <stdlib.h>
-#include <stdio.h>   // For potential error printing, optional
-#include "mem.h"
-
-// Helper macros for 1-based indices
-#define PARENT(i) ((i) / 2)
-#define LEFT_CHILD(i) (2 * (i))
-#define RIGHT_CHILD(i) (2 * (i) + 1)
-
-TimeoutHeap *timeout_heap_create(size_t initial_capacity) {
-    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "Creating TH1...");
-    TimeoutHeap *h = u_malloc(sizeof(TimeoutHeap));
-    if (!h) {
-        DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "TH0 error...");
-        return NULL;
-        }
-    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "Creating TH2...");
-    h->heap = u_malloc(sizeof(TimeoutEntry) * initial_capacity);
-    if (!h->heap) {
-        DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "TH1 error...");
-        u_free(h);
-        return NULL;
-    }
-    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "Creating TH3...");
-    h->size = 0;
-    h->capacity = initial_capacity;
-    h->freed_count = 0;
-    h->user_data = NULL;
-    h->free_callback = NULL;
-    return h;
-}
-
-
-void timeout_heap_destroy(TimeoutHeap *h) {
-    if (!h) return;
-
-    // Free all remaining data (deleted or not)
-    for (size_t i = 0; i < h->size; i++) {
-        if (h->free_callback) {
-            h->free_callback(h->user_data, h->heap[i].data);
-        }
-    }
-
-    u_free(h->heap);
-    u_free(h);
-}
-
-
-static void update_index(TimeoutHeap *h, size_t idx) {
-    if (h->heap[idx].index_ptr)
-        *h->heap[idx].index_ptr = idx;
-}
-
-static void swap_entries(TimeoutHeap *h, size_t a, size_t b) {
-    TimeoutEntry temp = h->heap[a];
-    h->heap[a] = h->heap[b];
-    h->heap[b] = temp;
-    update_index(h, a);
-    update_index(h, b);
-}
-
-static void bubble_up(TimeoutHeap *h, size_t i) {
-    // i is 1-based
-    while (i > 1 && h->heap[PARENT(i) - 1].expiration > h->heap[i - 1].expiration) {
-        swap_entries(h, PARENT(i) - 1, i - 1);
-        i = PARENT(i);
-    }
-}
-
-int timeout_heap_push(TimeoutHeap *h, TimeoutTime expiration, void *data, size_t *index_ptr) {
-    if (h->size == h->capacity) {
-        size_t new_cap = h->capacity ? h->capacity * 2 : 1;
-        TimeoutEntry *new_heap = u_realloc(h->heap, sizeof(TimeoutEntry) * new_cap);
-        if (!new_heap) return -1;  // Allocation failed
-        h->heap = new_heap;
-        h->capacity = new_cap;
-    }
-
-    // Insert at end (0-based)
-    size_t idx = h->size++;
-    h->heap[idx].expiration = expiration;
-    h->heap[idx].data = data;
-    h->heap[idx].index_ptr = index_ptr;
-    h->heap[idx].deleted = 0;
-    if (index_ptr)
-        *index_ptr = idx;
-
-    // Bubble up (1-based)
-    bubble_up(h, idx + 1);
-    return 0;
-}
-
-static void heapify_down(TimeoutHeap *h, size_t i) {
-    // i is 1-based
-    while (1) {
-        size_t smallest = i;
-        size_t left = LEFT_CHILD(i);
-        size_t right = RIGHT_CHILD(i);
-
-        if (left <= h->size && h->heap[left - 1].expiration < h->heap[smallest - 1].expiration) {
-            smallest = left;
-        }
-        if (right <= h->size && h->heap[right - 1].expiration < h->heap[smallest - 1].expiration) {
-            smallest = right;
-        }
-        if (smallest == i) break;
-
-        swap_entries(h, smallest - 1, i - 1);
-        i = smallest;
-    }
-}
-
-static void remove_root(TimeoutHeap *h) {
-    if (h->size == 0) return;
-
-    // Move last to root
-    h->heap[0] = h->heap[--h->size];
-    update_index(h, 0);
-
-    // Heapify down (1-based)
-    if (h->size > 0) {
-        heapify_down(h, 1);
-    }
-}
-
-int timeout_heap_peek(TimeoutHeap *h, TimeoutEntry *out) {
-    if (h->size == 0) return -1;
-
-    while (h->size > 0 && h->heap[0].deleted) {
-        void* data_to_free = h->heap[0].data;
-        remove_root(h);
-        if (h->free_callback) {
-            h->free_callback(h->user_data, data_to_free);
-        }
-    }
-    if (h->size == 0) return -1;
-
-    *out = h->heap[0];
-    return 0;
-}
-
-int timeout_heap_pop(TimeoutHeap *h, TimeoutEntry *out) {
-    if (h->size == 0) return -1;
-
-    while (h->size > 0 && h->heap[0].deleted) {
-        void* data_to_free = h->heap[0].data;
-        remove_root(h);
-        if (h->free_callback) {
-            h->free_callback(h->user_data, data_to_free);
-        }
-    }
-    if (h->size == 0) return -1;
-
-    *out = h->heap[0];
-    remove_root(h);
-    return 0;
-}
-
-int timeout_heap_cancel(TimeoutHeap *h, TimeoutTime expiration, void *data) {
-    for (size_t i = 0; i < h->size; ++i) {
-        if (h->heap[i].expiration == expiration && h->heap[i].data == data) {
-            h->heap[i].deleted = 1;
-            h->heap[i].expiration = 0;
-            bubble_up(h, i + 1);
-            return 0;
-        }
-    }
-    return -1;  // Not found
-}
-
-int timeout_heap_cancel_at(TimeoutHeap *h, size_t index, void *data) {
-    if (index >= h->size || h->heap[index].data != data) return -1;
-
-    h->heap[index].deleted = 1;
-    h->heap[index].expiration = 0;
-    bubble_up(h, index + 1);
-    return 0;
-}
-
-void timeout_heap_set_free_callback(TimeoutHeap *h, void* user_data, void (*callback)(void* user_data, void* data)) {
-    if (!h) return;
-    h->user_data = user_data;
-    h->free_callback = callback;
-}
-
-size_t timeout_heap_get_size(TimeoutHeap *h) {
-    if (!h) return 0;
-    return h->size;
-}

lib/timeout_heap.h

@@ -1,97 +0,0 @@
-// timeout_heap.h
-
-#ifndef TIMEOUT_HEAP_H
-#define TIMEOUT_HEAP_H
-
-#include <stdint.h>  // For uint64_t
-#include <stddef.h>  // For size_t
-
-typedef uint64_t TimeoutTime;  // e.g., milliseconds since epoch or from now
-
-typedef struct {
-    TimeoutTime expiration;  // Sort key (smaller = earlier)
-    void *data;              // User data (e.g., callback or ID)
-    size_t *index_ptr;       // Pointer to node's heap_index (NULL = no tracking)
-    int deleted;             // 0 = active, 1 = deleted
-} TimeoutEntry;
-
-typedef struct TimeoutHeap TimeoutHeap;
-
-struct TimeoutHeap {
-    TimeoutEntry *heap;      // Dynamic array
-    size_t size;             // Current number of elements
-    size_t capacity;         // Allocated size
-    size_t freed_count;      // Number of freed timer nodes
-    void* user_data;         // User data for free callback
-    void (*free_callback)(void* user_data, void* data); // Callback to free data
-};
-
-/**
- * Create a new timeout heap with initial capacity.
- * @param initial_capacity Starting capacity (will grow as needed).
- * @return Pointer to the heap, or NULL on failure.
- */
-TimeoutHeap *timeout_heap_create(size_t initial_capacity);
-
-/**
- * Destroy the timeout heap and free resources.
- * @param h The heap to destroy.
- */
-void timeout_heap_destroy(TimeoutHeap *h);
-
-/**
- * Set a callback function to free data when deleted nodes are removed.
- * @param h The heap.
- * @param user_data User data passed to callback.
- * @param callback Callback function (if NULL, data is freed with free()).
- */
-void timeout_heap_set_free_callback(TimeoutHeap *h, void* user_data, void (*callback)(void* user_data, void* data));
-
-/**
- * Insert a new timeout into the heap.
- * @param h The heap.
- * @param expiration The expiration time.
- * @param data User data associated with the timeout.
- * @return 0 on success, -1 on allocation failure.
- */
-int timeout_heap_push(TimeoutHeap *h, TimeoutTime expiration, void *data, size_t *index_ptr);
-
-/**
- * Peek at the earliest non-deleted timeout without removing it.
- * @param h The heap.
- * @param out Where to store the entry.
- * @return 0 on success, -1 if empty.
- */
-int timeout_heap_peek(TimeoutHeap *h, TimeoutEntry *out);
-
-/**
- * Pop the earliest non-deleted timeout from the heap.
- * @param h The heap.
- * @param out Where to store the entry.
- * @return 0 on success, -1 if empty.
- */
-int timeout_heap_pop(TimeoutHeap *h, TimeoutEntry *out);
-
-/**
- * Cancel a timeout by matching expiration and data.
- * Scans the heap linearly, so O(n) time.
- * Assumes combinations are unique; cancels the first match.
- * @param h The heap.
- * @param expiration The expiration time to match.
- * @param data The data to match.
- * @return 0 if found and canceled, -1 if not found.
- */
-int timeout_heap_cancel(TimeoutHeap *h, TimeoutTime expiration, void *data);
-
-int timeout_heap_cancel_at(TimeoutHeap *h, size_t index, void *data);
-
-/**
- * Get the number of freed timer nodes.
- * @param h The heap.
- * @return Count of freed timer nodes.
- */
-size_t timeout_heap_get_freed_count(TimeoutHeap *h);
-
-size_t timeout_heap_get_size(TimeoutHeap *h);
-
-#endif // TIMEOUT_HEAP_H

lib/twheel.c

@@ -0,0 +1,223 @@
+// twheel.c — Tickless hierarchical timing wheel (adapted from timeout.c)
+// Original: Copyright (c) 2013-2014 William Ahern, MIT license.
+
+#include <limits.h>
+#include <stddef.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include "twheel.h"
+#include "mem.h"
+#include "debug_config.h"
+
+#define WHEEL_BIT 6
+#define WHEEL_NUM 4
+
+#define WHEEL_LEN  (1U << WHEEL_BIT)
+#define WHEEL_MAX  (WHEEL_LEN - 1)
+#define WHEEL_MASK (WHEEL_LEN - 1)
+
+#include "twheel_bitops.c"
+
+#define ctz(n) ctz64(n)
+#define clz(n) clz64(n)
+#define fls(n) ((int)(64 - clz64(n)))
+
+typedef uint64_t wheel_t;
+#define WHEEL_C(n) UINT64_C(n)
+
+#define countof(a) (sizeof(a) / sizeof *(a))
+
+#ifndef TAILQ_CONCAT
+#define TAILQ_CONCAT(head1, head2, field) do {                          \
+    if (!TAILQ_EMPTY(head2)) {                                          \
+        *(head1)->tqh_last = (head2)->tqh_first;                        \
+        (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last;         \
+        (head1)->tqh_last = (head2)->tqh_last;                          \
+        TAILQ_INIT((head2));                                            \
+    }                                                                   \
+} while (0)
+#endif
+
+#ifndef TAILQ_FOREACH_SAFE
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar)                      \
+    for ((var) = TAILQ_FIRST(head);                                     \
+        (var) && ((tvar) = TAILQ_NEXT(var, field), 1);                  \
+        (var) = (tvar))
+#endif
+
+#ifndef MAX
+#define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+#ifndef MIN
+#define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+
+static inline wheel_t rotl(const wheel_t v, int c) {
+    if (!(c &= (sizeof v * CHAR_BIT - 1))) return v;
+    return (v << c) | (v >> (sizeof v * CHAR_BIT - c));
+}
+
+static inline wheel_t rotr(const wheel_t v, int c) {
+    if (!(c &= (sizeof v * CHAR_BIT - 1))) return v;
+    return (v >> c) | (v << (sizeof v * CHAR_BIT - c));
+}
+
+static struct twheels *twheels_init(struct twheels *T, twheel_t hz) {
+    for (unsigned i = 0; i < WHEEL_NUM; i++) {
+        for (unsigned j = 0; j < WHEEL_LEN; j++) {
+            TAILQ_INIT(&T->wheel[i][j]);
+        }
+    }
+    TAILQ_INIT(&T->expired);
+    for (unsigned i = 0; i < WHEEL_NUM; i++) T->pending[i] = 0;
+    T->curtime = 0;
+    T->hertz = hz ? hz : TWHEEL_mHZ;
+    return T;
+}
+
+struct twheels *twheels_open(twheel_t hz) {
+    struct twheels *T = u_malloc(sizeof *T);
+    if (!T) { DEBUG_ERROR(DEBUG_CATEGORY_TIMERS, "twheels_open: malloc failed"); return NULL; }
+    return twheels_init(T, hz);
+}
+
+void twheels_close(struct twheels *T) {
+    if (!T) return;
+    struct twheel_list reset;
+    TAILQ_INIT(&reset);
+    for (unsigned i = 0; i < WHEEL_NUM; i++)
+        for (unsigned j = 0; j < WHEEL_LEN; j++)
+            TAILQ_CONCAT(&reset, &T->wheel[i][j], tqe);
+    TAILQ_CONCAT(&reset, &T->expired, tqe);
+    struct twheel *to;
+    TAILQ_FOREACH(to, &reset, tqe) to->pending = NULL;
+    u_free(T);
+}
+
+twheel_t twheels_hz(struct twheels *T) { return T->hertz; }
+
+void twheels_del(struct twheels *T, struct twheel *to) {
+    if (to->pending) {
+        TAILQ_REMOVE(to->pending, to, tqe);
+        if (to->pending != &T->expired && TAILQ_EMPTY(to->pending)) {
+            ptrdiff_t index = to->pending - &T->wheel[0][0];
+            int w = index / WHEEL_LEN, slot = index % WHEEL_LEN;
+            T->pending[w] &= ~(WHEEL_C(1) << slot);
+        }
+        to->pending = NULL;
+    }
+}
+
+static inline int timeout_wheel(twheel_t timeout) {
+    return (fls(MIN(timeout, TWHEEL_MAX)) - 1) / WHEEL_BIT;
+}
+
+static inline int timeout_slot(int wheel, twheel_t expires) {
+    return WHEEL_MASK & ((expires >> (wheel * WHEEL_BIT)) - !!wheel);
+}
+
+static void twheels_sched(struct twheels *T, struct twheel *to, twheel_t expires) {
+    twheels_del(T, to);
+    to->expires = expires;
+    if (expires > T->curtime) {
+        twheel_t rem = expires - T->curtime;
+        int wheel = timeout_wheel(rem);
+        int slot = timeout_slot(wheel, to->expires);
+        to->pending = &T->wheel[wheel][slot];
+        TAILQ_INSERT_TAIL(to->pending, to, tqe);
+        T->pending[wheel] |= WHEEL_C(1) << slot;
+    } else {
+        to->pending = &T->expired;
+        TAILQ_INSERT_TAIL(to->pending, to, tqe);
+    }
+}
+
+void twheels_add(struct twheels *T, struct twheel *to, twheel_t timeout) {
+    if (to->flags & TWHEEL_INT) to->interval = MAX(1, timeout);
+    if (to->flags & TWHEEL_ABS) twheels_sched(T, to, timeout);
+    else twheels_sched(T, to, T->curtime + timeout);
+}
+
+void twheels_update(struct twheels *T, twheel_t curtime) {
+    twheel_t elapsed = curtime - T->curtime;
+    struct twheel_list todo;
+    TAILQ_INIT(&todo);
+
+    for (int wheel = 0; wheel < WHEEL_NUM; wheel++) {
+        wheel_t pending;
+        if ((elapsed >> (wheel * WHEEL_BIT)) > WHEEL_MAX) {
+            pending = (wheel_t)~WHEEL_C(0);
+        } else {
+            wheel_t _elapsed = WHEEL_MASK & (elapsed >> (wheel * WHEEL_BIT));
+            int oslot = WHEEL_MASK & (T->curtime >> (wheel * WHEEL_BIT));
+            pending = rotl(((UINT64_C(1) << _elapsed) - 1), oslot);
+            int nslot = WHEEL_MASK & (curtime >> (wheel * WHEEL_BIT));
+            pending |= rotr(rotl(((WHEEL_C(1) << _elapsed) - 1), nslot), _elapsed);
+            pending |= WHEEL_C(1) << nslot;
+        }
+        while (pending & T->pending[wheel]) {
+            int slot = ctz(pending & T->pending[wheel]);
+            TAILQ_CONCAT(&todo, &T->wheel[wheel][slot], tqe);
+            T->pending[wheel] &= ~(UINT64_C(1) << slot);
+        }
+        if (!(0x1 & pending)) break;
+        elapsed = MAX(elapsed, (WHEEL_LEN << (wheel * WHEEL_BIT)));
+    }
+    T->curtime = curtime;
+
+    struct twheel *to;
+    while (!TAILQ_EMPTY(&todo)) {
+        to = TAILQ_FIRST(&todo);
+        TAILQ_REMOVE(&todo, to, tqe);
+        to->pending = NULL;
+        twheels_sched(T, to, to->expires);
+    }
+}
+
+bool twheels_pending(struct twheels *T) {
+    wheel_t pending = 0;
+    for (int wheel = 0; wheel < WHEEL_NUM; wheel++) pending |= T->pending[wheel];
+    return !!pending;
+}
+
+bool twheels_expired(struct twheels *T) { return !TAILQ_EMPTY(&T->expired); }
+
+static twheel_t twheels_int(struct twheels *T) {
+    twheel_t timeout = ~TWHEEL_C(0), _timeout, relmask = 0;
+    for (int wheel = 0; wheel < WHEEL_NUM; wheel++) {
+        if (T->pending[wheel]) {
+            int slot = WHEEL_MASK & (T->curtime >> (wheel * WHEEL_BIT));
+            _timeout = (ctz(rotr(T->pending[wheel], slot)) + !!wheel) << (wheel * WHEEL_BIT);
+            _timeout -= relmask & T->curtime;
+            timeout = MIN(_timeout, timeout);
+        }
+        relmask <<= WHEEL_BIT;
+        relmask |= WHEEL_MASK;
+    }
+    return timeout;
+}
+
+twheel_t twheels_timeout(struct twheels *T) {
+    if (!TAILQ_EMPTY(&T->expired)) return 0;
+    return twheels_int(T);
+}
+
+struct twheel *twheels_get(struct twheels *T) {
+    if (!TAILQ_EMPTY(&T->expired)) {
+        struct twheel *to = TAILQ_FIRST(&T->expired);
+        TAILQ_REMOVE(&T->expired, to, tqe);
+        to->pending = NULL;
+        return to;
+    }
+    return NULL;
+}
+
+struct twheel *twheel_init(struct twheel *to, int flags) {
+    memset(to, 0, sizeof *to);
+    to->flags = flags;
+    return to;
+}
+
+bool twheel_pending(struct twheel *to) { return to->pending != NULL; }

lib/twheel.h

@@ -0,0 +1,57 @@
+// twheel.h — Tickless hierarchical timing wheel (adapted from timeout.h)
+// Original: Copyright (c) 2013-2014 William Ahern, MIT license.
+
+#ifndef TWHEEL_H
+#define TWHEEL_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/queue.h>
+
+#define TWHEEL_VERSION 0x20160226
+
+typedef uint64_t twheel_t;
+#define TWHEEL_C(n)  UINT64_C(n)
+#define TWHEEL_mHZ   TWHEEL_C(1000)
+#define TWHEEL_MAX   ((TWHEEL_C(1) << 24) - 1)
+
+enum twheel_flags {
+    TWHEEL_INT = 0x01,
+    TWHEEL_ABS = 0x02,
+};
+
+#define TWHEEL_INITIALIZER(flags) { (flags) }
+
+struct twheel {
+    int flags;
+    twheel_t expires;
+    struct twheel_list *pending;
+    TAILQ_ENTRY(twheel) tqe;
+    twheel_t interval;
+};
+
+TAILQ_HEAD(twheel_list, twheel);
+
+struct twheels {
+    struct twheel_list wheel[4][64], expired;
+    uint64_t pending[4];
+    twheel_t curtime;
+    twheel_t hertz;
+};
+
+struct twheel *twheel_init(struct twheel *, int flags);
+bool twheel_pending(struct twheel *);
+
+struct twheels *twheels_open(twheel_t hz);
+void twheels_close(struct twheels *);
+twheel_t twheels_hz(struct twheels *);
+void twheels_update(struct twheels *, twheel_t curtime);
+twheel_t twheels_timeout(struct twheels *);
+void twheels_add(struct twheels *, struct twheel *, twheel_t timeout);
+void twheels_del(struct twheels *, struct twheel *);
+struct twheel *twheels_get(struct twheels *);
+bool twheels_pending(struct twheels *);
+bool twheels_expired(struct twheels *);
+
+#endif

lib/twheel_bitops.c

@@ -0,0 +1,35 @@
+// twheel_bitops.c — ctz/clz for timing wheel (included by twheel.c)
+
+#include <stdint.h>
+
+#if defined(__GNUC__) && !defined(TWHEEL_DISABLE_GNUC_BITOPS)
+#define ctz64(n) __builtin_ctzll(n)
+#define clz64(n) __builtin_clzll(n)
+#if LONG_BITS == 32
+#define ctz32(n) __builtin_ctzl(n)
+#define clz32(n) __builtin_clzl(n)
+#else
+#define ctz32(n) __builtin_ctz(n)
+#define clz32(n) __builtin_clz(n)
+#endif
+#elif defined(_MSC_VER) && !defined(TWHEEL_DISABLE_MSVC_BITOPS)
+#include <intrin.h>
+static __inline int ctz32(unsigned long val) { DWORD z=0; _BitScanForward(&z,val); return z; }
+static __inline int clz32(unsigned long val) { DWORD z=0; _BitScanReverse(&z,val); return z; }
+#ifdef _WIN64
+static __inline int ctz64(uint64_t val) { DWORD z=0; _BitScanForward64(&z,val); return z; }
+static __inline int clz64(uint64_t val) { DWORD z=0; _BitScanReverse64(&z,val); return z; }
+#else
+static __inline int ctz64(uint64_t val) { uint32_t lo=(uint32_t)val,hi=(uint32_t)(val>>32); return lo?ctz32(lo):32+ctz32(hi); }
+static __inline int clz64(uint64_t val) { uint32_t lo=(uint32_t)val,hi=(uint32_t)(val>>32); return hi?clz32(hi):32+clz32(lo); }
+#endif
+#else
+#define process_(one, cz_bits, bits) if (x < ( one << (cz_bits - bits))) { rv += bits; x <<= bits; }
+static inline int clz64(uint64_t x) { int rv=0; process_(UINT64_C(1),64,32); process_(UINT64_C(1),64,16); process_(UINT64_C(1),64,8); process_(UINT64_C(1),64,4); process_(UINT64_C(1),64,2); process_(UINT64_C(1),64,1); return rv; }
+static inline int clz32(uint32_t x) { int rv=0; process_(UINT32_C(1),32,16); process_(UINT32_C(1),32,8); process_(UINT32_C(1),32,4); process_(UINT32_C(1),32,2); process_(UINT32_C(1),32,1); return rv; }
+#undef process_
+#define process_(one, bits) if ((x & ((one << (bits))-1)) == 0) { rv += bits; x >>= bits; }
+static inline int ctz64(uint64_t x) { int rv=0; process_(UINT64_C(1),32); process_(UINT64_C(1),16); process_(UINT64_C(1),8); process_(UINT64_C(1),4); process_(UINT64_C(1),2); process_(UINT64_C(1),1); return rv; }
+static inline int ctz32(uint32_t x) { int rv=0; process_(UINT32_C(1),16); process_(UINT32_C(1),8); process_(UINT32_C(1),4); process_(UINT32_C(1),2); process_(UINT32_C(1),1); return rv; }
+#undef process_
+#endif

lib/u_async.c

@@ -5,6 +5,7 @@
 #include "debug_config.h"
 #include "mem.h"
 #include "memory_pool.h"
+#include "twheel.h"
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
@@ -32,13 +33,12 @@
 
 // Timeout node with safe cancellation
 struct timeout_node {
+    struct twheel to;        // MUST be first — embedded timing wheel entry
     char name[16];
     void* arg;
     timeout_callback_t callback;
-    uint64_t expiration_ms; // absolute expiration time in milliseconds
     struct UASYNC* ua;      // Pointer back to uasync instance for counter updates
     struct timeout_node* next;  // For immediate queue (FIFO)
-    size_t heap_index;       // Position in timeout_heap (SIZE_MAX if not in heap)
 };
 
 // Socket node with array-based storage
@@ -290,16 +290,49 @@ static struct socket_node* socket_array_get_by_sock(struct socket_array* sa, soc
     return &sa->sockets[index];
 }
 
-// Callback to u_free timeout node and update counters
-static void timeout_node_free_callback(void* user_data, void* data) {
-    struct UASYNC* ua = (struct UASYNC*)user_data;
-    struct timeout_node* node = (struct timeout_node*)data;
-    (void)node; // Not used directly, but keep for consistency
-    ua->timer_free_count++;
-    memory_pool_free(ua->timeout_pool, data);
+// ------ socket_node dispatch helpers (eliminate FD/SOCK type duplication) ------
+
+static inline int socket_node_fd(const struct socket_node* n) {
+    if (n->type == SOCKET_NODE_TYPE_SOCK) {
+#ifdef _WIN32
+        return (int)(intptr_t)n->sock;
+#else
+        return n->sock;
+#endif
+    }
+    return n->fd;
 }
 
-// Helper to get current time
+static inline void socket_node_dispatch_read(const struct socket_node* n) {
+    if (n->type == SOCKET_NODE_TYPE_SOCK) {
+        if (n->read_cbk_sock) n->read_cbk_sock(n->sock, n->user_data);
+    } else {
+        if (n->read_cbk) n->read_cbk(n->fd, n->user_data);
+    }
+}
+
+static inline void socket_node_dispatch_write(const struct socket_node* n) {
+    if (n->type == SOCKET_NODE_TYPE_SOCK) {
+        if (n->write_cbk_sock) n->write_cbk_sock(n->sock, n->user_data);
+    } else {
+        if (n->write_cbk) n->write_cbk(n->fd, n->user_data);
+    }
+}
+
+static inline short socket_node_events(const struct socket_node* n) {
+    short events = 0;
+    if (n->type == SOCKET_NODE_TYPE_SOCK) {
+        if (n->read_cbk_sock && n->enable_read)  events |= POLLIN;
+        if (n->write_cbk_sock && n->enable_write) events |= POLLOUT;
+    } else {
+        if (n->read_cbk && n->enable_read)  events |= POLLIN;
+        if (n->write_cbk && n->enable_write) events |= POLLOUT;
+    }
+    if (n->except_cbk) events |= POLLPRI;
+    return events;
+}
+
+// Simplified timeout handling without reference counting
 static void get_current_time(struct timeval* tv) {
 #ifdef _WIN32
     // Для Windows используем GetTickCount или другие механизмы
@@ -358,17 +391,6 @@ uint64_t get_time_us(void) {
 
 
 
-// Drain wakeup pipe - read all available bytes
-static void drain_wakeup_pipe(struct UASYNC* ua) {
-    if (!ua || !ua->wakeup_initialized) return;
-    
-    char buf[64];
-    while (1) {
-        ssize_t n = read(ua->wakeup_pipe[0], buf, sizeof(buf));
-        if (n <= 0) break;
-    }
-}
-
 // Process posted tasks (lock-u_free during execution)
 static void process_posted_tasks(struct UASYNC* ua) {
     if (!ua) return;
@@ -390,7 +412,7 @@ static void process_posted_tasks(struct UASYNC* ua) {
 #endif
 
     while (list) {
-        DEBUG_DEBUG(DEBUG_CATEGORY_TUN, "POSTed task get");
+        DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "POSTed task get");
         struct posted_task* t = list;
         list = list->next;
 
@@ -460,63 +482,40 @@ static void process_timeouts(struct UASYNC* ua) {
         memory_pool_free(ua->timeout_pool, node);
     }
     
-    if (!ua->timeout_heap) return;
+    if (!ua->twheel) return;
     
     struct timeval now_tv;
     get_current_time(&now_tv);
     uint64_t now_ms = timeval_to_ms(&now_tv);
     
-    while (1) {
-        TimeoutEntry entry;
-        if (timeout_heap_peek(ua->timeout_heap, &entry) != 0) break;
-        if (entry.expiration > now_ms) break;
+    // Update timing wheel to current time — moves expired to expired queue
+    twheels_update(ua->twheel, now_ms);
     
-        // Pop the expired timeout
-        timeout_heap_pop(ua->timeout_heap, &entry);
-        struct timeout_node* node = (struct timeout_node*)entry.data;
+    // Drain all expired timeouts
+    struct twheel *to;
+    while ((to = twheels_get(ua->twheel))) {
+        struct timeout_node* node = (struct timeout_node*)to;
         
         if (node && node->callback) {
             DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "timer→%s expired", node->name[0] ? node->name : "");
             node->callback(node->arg);
         }
         
-        // Always u_free the node after processing
         if (node && node->ua) {
             node->ua->timer_free_count++;
         }
         memory_pool_free(ua->timeout_pool, node);
-        continue;  // Process next expired timeout
     }
 }
 
-// Compute time to next timeout
-static void get_next_timeout(struct UASYNC* ua, struct timeval* tv) {
-    if (!ua || !ua->timeout_heap) {
-        tv->tv_sec = 0;
-        tv->tv_usec = 0;
-        return;
-    }
-    
-    TimeoutEntry entry;
-    if (timeout_heap_peek(ua->timeout_heap, &entry) != 0) {
-        tv->tv_sec = 0;
-        tv->tv_usec = 0;
-        return;
-    }
-    
-    struct timeval now_tv;
-    get_current_time(&now_tv);
-    uint64_t now_ms = timeval_to_ms(&now_tv);
-    
-    if (entry.expiration <= now_ms) {
-        tv->tv_sec = 0;
-        tv->tv_usec = 0;
-        return;
-    }
-    
-    uint64_t delta_ms = entry.expiration - now_ms;
-    tv->tv_sec = delta_ms / 1000;
-    tv->tv_usec = (delta_ms % 1000) * 1000;
+// Compute time to next timeout in milliseconds
+// Returns: 0 = timer already expired/no timers, ~0 = no pending timers, >0 = ms to wait
+static uint64_t get_next_timeout_ms(struct UASYNC* ua) {
+    if (!ua || !ua->twheel) return 0;
+    twheel_t t = twheels_timeout(ua->twheel);
+    if (t == 0)        return 0;                     // expired timer exists
+    if (t == ~TWHEEL_C(0)) return ~TWHEEL_C(0);       // no pending timers
+    return (uint64_t)t;
 }
 
 
@@ -524,9 +523,7 @@ static void get_next_timeout(struct UASYNC* ua, struct timeval* tv) {
 // Instance version
 void* uasync_set_timeout(struct UASYNC* ua, int timeout_tb, void* arg, timeout_callback_t callback, const char* name) {
     if (!ua || timeout_tb < 0 || !callback) return NULL;
-    if (!ua->timeout_heap) return NULL;
-    
-//    DEBUG_DEBUG(DEBUG_CATEGORY_TIMERS, "uasync_set_timeout: timeout=%d.%d ms, arg=%p, callback=%p", timeout_tb/10, timeout_tb%10, arg, callback);
+    if (!ua->twheel) return NULL;
     
     struct timeout_node* node = memory_pool_alloc(ua->timeout_pool);
     if (!node) {
@@ -544,21 +541,16 @@ void* uasync_set_timeout(struct UASYNC* ua, int timeout_tb, void* arg, timeout_c
     node->arg = arg;
     node->callback = callback;
     node->ua = ua;
-    node->heap_index = SIZE_MAX;
     
-    // Calculate expiration time in milliseconds
+    // Calculate expiration time in milliseconds (absolute monotonic)
     struct timeval now;
     get_current_time(&now);
     timeval_add_tb(&now, timeout_tb);
-    node->expiration_ms = timeval_to_ms(&now);
+    uint64_t expiration_ms = timeval_to_ms(&now);
     
-    // Add to heap
-    if (timeout_heap_push(ua->timeout_heap, node->expiration_ms, node, &node->heap_index) != 0) {
-        DEBUG_ERROR(DEBUG_CATEGORY_TIMERS, "uasync_set_timeout: failed to push to heap");
-        memory_pool_free(ua->timeout_pool, node);
-        ua->timer_free_count++;  // Balance the alloc counter
-        return NULL;
-    }
+    // Initialize wheel entry and add to timing wheel
+    twheel_init(&node->to, TWHEEL_ABS);
+    twheels_add(ua->twheel, &node->to, expiration_ms);
     
     return node;
 }
@@ -579,9 +571,8 @@ void* uasync_call_soon(struct UASYNC* ua, void* user_arg, timeout_callback_t cal
     node->arg = user_arg;
     node->callback = callback;
     node->ua = ua;
-    node->expiration_ms = 0;
     node->next = NULL;
-    node->heap_index = SIZE_MAX;
+    memset(&node->to, 0, sizeof(node->to));
     
     // FIFO: добавляем в конец очереди
     if (ua->immediate_queue_tail) {
@@ -611,28 +602,24 @@ err_t uasync_call_soon_cancel(struct UASYNC* ua, void* t_id) {
 
 // Instance version
 err_t uasync_cancel_timeout(struct UASYNC* ua, void* t_id) {
-    if (!ua || !t_id || !ua->timeout_heap) {
-        DEBUG_ERROR(DEBUG_CATEGORY_TIMERS, "uasync_cancel_timeout: invalid parameters ua=%p, t_id=%p, heap=%p", 
-                    ua, t_id, ua ? ua->timeout_heap : NULL);
+    if (!ua || !t_id || !ua->twheel) {
+        DEBUG_ERROR(DEBUG_CATEGORY_TIMERS, "uasync_cancel_timeout: invalid parameters ua=%p, t_id=%p, twheel=%p", 
+                    ua, t_id, ua ? ua->twheel : NULL);
         return ERR_FAIL;
     }
 
     struct timeout_node* node = (struct timeout_node*)t_id;
 
-    if (node->heap_index == SIZE_MAX || node->heap_index >= ua->timeout_heap->size ||
-        ua->timeout_heap->heap[node->heap_index].data != node) {
-        DEBUG_DEBUG(DEBUG_CATEGORY_TIMERS, "uasync_cancel_timeout: not found in heap: ua=%p, t_id=%p, node=%p, expires=%llu ms", 
-                    ua, t_id, node, (unsigned long long)node->expiration_ms);
+    if (!twheel_pending(&node->to)) {
+        DEBUG_DEBUG(DEBUG_CATEGORY_TIMERS, "uasync_cancel_timeout: not pending: ua=%p, t_id=%p", ua, t_id);
         return ERR_FAIL;
     }
     
-    if (timeout_heap_cancel_at(ua->timeout_heap, node->heap_index, node) == 0) {
-        node->heap_index = SIZE_MAX;
-        node->callback = NULL;
-        return ERR_OK;
-    }
-
-    return ERR_FAIL;
+    twheels_del(ua->twheel, &node->to);
+    node->callback = NULL;
+    ua->timer_free_count++;
+    memory_pool_free(ua->timeout_pool, node);
+    return ERR_OK;
 }
 
 
@@ -765,36 +752,27 @@ err_t uasync_remove_socket_t(struct UASYNC* ua, socket_t sock) {
     return ERR_FAIL;
 }
 
-err_t uasync_set_socket_read(struct UASYNC* ua, void* s_id, int enable) {
+static err_t socket_set_event(struct UASYNC* ua, void* s_id, int is_read, int enable) {
     if (!ua || !s_id) return ERR_FAIL;
 
     struct socket_node* node = (struct socket_node*)s_id;
     if (!node->active || node->fd < 0) return ERR_FAIL;
 
     int val = enable ? 1 : 0;
-    if (node->enable_read == val) return ERR_OK;
-    node->enable_read = val;
+    int* field = is_read ? &node->enable_read : &node->enable_write;
+    if (*field == val) return ERR_OK;
+    *field = val;
 
 #if HAS_EPOLL
     if (ua->use_epoll && ua->epoll_fd >= 0) {
         struct epoll_event ev;
-        ev.events = 0;
-        if (node->type == SOCKET_NODE_TYPE_SOCK) {
-            if (node->read_cbk_sock && node->enable_read) ev.events |= EPOLLIN;
-            if (node->write_cbk_sock && node->enable_write) ev.events |= EPOLLOUT;
-            ev.data.fd = node->sock;
-        } else {
-            if (node->read_cbk && node->enable_read) ev.events |= EPOLLIN;
-            if (node->write_cbk && node->enable_write) ev.events |= EPOLLOUT;
-            ev.data.fd = node->fd;
-        }
-        if (node->except_cbk) ev.events |= EPOLLPRI;
+        ev.events = socket_node_events(node);
+        ev.data.fd = socket_node_fd(node);
 #ifdef _WIN32
-        int efd = (int)(intptr_t)ev.data.fd;
+        epoll_ctl(ua->epoll_fd, EPOLL_CTL_MOD, (int)(intptr_t)ev.data.fd, &ev);
 #else
-        int efd = ev.data.fd;
+        epoll_ctl(ua->epoll_fd, EPOLL_CTL_MOD, ev.data.fd, &ev);
 #endif
-        epoll_ctl(ua->epoll_fd, EPOLL_CTL_MOD, efd, &ev);
     }
 #endif
 
@@ -802,41 +780,12 @@ err_t uasync_set_socket_read(struct UASYNC* ua, void* s_id, int enable) {
     return ERR_OK;
 }
 
+err_t uasync_set_socket_read(struct UASYNC* ua, void* s_id, int enable) {
+    return socket_set_event(ua, s_id, 1, enable);
+}
+
 err_t uasync_set_socket_write(struct UASYNC* ua, void* s_id, int enable) {
-    if (!ua || !s_id) return ERR_FAIL;
-
-    struct socket_node* node = (struct socket_node*)s_id;
-    if (!node->active || node->fd < 0) return ERR_FAIL;
-
-    int val = enable ? 1 : 0;
-    if (node->enable_write == val) return ERR_OK;
-    node->enable_write = val;
-
-#if HAS_EPOLL
-    if (ua->use_epoll && ua->epoll_fd >= 0) {
-        struct epoll_event ev;
-        ev.events = 0;
-        if (node->type == SOCKET_NODE_TYPE_SOCK) {
-            if (node->read_cbk_sock && node->enable_read) ev.events |= EPOLLIN;
-            if (node->write_cbk_sock && node->enable_write) ev.events |= EPOLLOUT;
-            ev.data.fd = node->sock;
-        } else {
-            if (node->read_cbk && node->enable_read) ev.events |= EPOLLIN;
-            if (node->write_cbk && node->enable_write) ev.events |= EPOLLOUT;
-            ev.data.fd = node->fd;
-        }
-        if (node->except_cbk) ev.events |= EPOLLPRI;
-#ifdef _WIN32
-        int efd = (int)(intptr_t)ev.data.fd;
-#else
-        int efd = ev.data.fd;
-#endif
-        epoll_ctl(ua->epoll_fd, EPOLL_CTL_MOD, efd, &ev);
-    }
-#endif
-
-    ua->poll_fds_dirty = 1;
-    return ERR_OK;
+    return socket_set_event(ua, s_id, 0, enable);
 }
 
 // Helper function to rebuild cached pollfd array
@@ -874,31 +823,10 @@ static void rebuild_poll_fds(struct UASYNC* ua) {
         int socket_array_idx = ua->sockets->active_indices[i];
         struct socket_node* cur = &ua->sockets->sockets[socket_array_idx];
 
-        // Handle socket_t vs int fd
-        if (cur->type == SOCKET_NODE_TYPE_SOCK) {
-            // socket_t - cast to int for pollfd
-#ifdef _WIN32
-            ua->poll_fds[idx].fd = (int)(intptr_t)cur->sock;
-#else
-            ua->poll_fds[idx].fd = cur->sock;
-#endif
-        } else {
-            // Regular fd
-            ua->poll_fds[idx].fd = cur->fd;
-        }
-        ua->poll_fds[idx].events = 0;
+        ua->poll_fds[idx].fd = socket_node_fd(cur);
+        ua->poll_fds[idx].events = socket_node_events(cur);
         ua->poll_fds[idx].revents = 0;
 
-        if (cur->type == SOCKET_NODE_TYPE_SOCK) {
-            if (cur->read_cbk_sock && cur->enable_read) ua->poll_fds[idx].events |= POLLIN;
-            if (cur->write_cbk_sock && cur->enable_write) ua->poll_fds[idx].events |= POLLOUT;
-        } else {
-            if (cur->read_cbk && cur->enable_read) ua->poll_fds[idx].events |= POLLIN;
-            if (cur->write_cbk && cur->enable_write) ua->poll_fds[idx].events |= POLLOUT;
-        }
-        if (cur->write_cbk && cur->enable_write) ua->poll_fds[idx].events |= POLLOUT;
-        if (cur->except_cbk) ua->poll_fds[idx].events |= POLLPRI;
-        
         idx++;
     }
     
@@ -913,7 +841,7 @@ static void process_epoll_events(struct UASYNC* ua, struct epoll_event* events,
         // Check if this is the wakeup fd (data.fd is -1)
         if (events[i].data.fd < 0) {
             if (events[i].events & EPOLLIN) {
-                drain_wakeup_pipe(ua);
+                handle_wakeup(ua);
             }
             continue;
         }
@@ -936,35 +864,21 @@ static void process_epoll_events(struct UASYNC* ua, struct epoll_event* events,
         
         /* Check for error conditions first */
         if (events[i].events & (EPOLLERR | EPOLLHUP)) {
-            if (local_except) {
-                local_except(local_fd, local_ud);
-            }
+            if (local_except) local_except(local_fd, local_ud);
         }
 
-        /* Read readiness - use appropriate callback based on socket type */
+        /* Read readiness */
         if (events[i].events & EPOLLIN) {
             if (local_type == SOCKET_NODE_TYPE_SOCK) {
-                if (local_read_sock) {
-                    local_read_sock(local_sock, local_ud);
-                }
-            } else {
-                if (local_read) {
-                    local_read(local_fd, local_ud);
-                }
-            }
+                if (local_read_sock) local_read_sock(local_sock, local_ud);
+            } else if (local_read) local_read(local_fd, local_ud);
         }
 
-        /* Write readiness - use appropriate callback based on socket type */
+        /* Write readiness */
         if (events[i].events & EPOLLOUT) {
             if (local_type == SOCKET_NODE_TYPE_SOCK) {
-                if (local_write_sock) {
-                    local_write_sock(local_sock, local_ud);
-                }
-            } else {
-                if (local_write) {
-                    local_write(local_fd, local_ud);
-                }
-            }
+                if (local_write_sock) local_write_sock(local_sock, local_ud);
+            } else if (local_write) local_write(local_fd, local_ud);
         }
     }
 }
@@ -973,60 +887,34 @@ static void process_epoll_events(struct UASYNC* ua, struct epoll_event* events,
 // Instance version
 void uasync_poll(struct UASYNC* ua, int timeout_tb) {
     if (!ua) return;
-    if (!ua->sockets || !ua->timeout_heap) return;
+    if (!ua->sockets || !ua->twheel) return;
 
-    DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "poll(%d sockets, %zu timers, timeout=%d.%dms)",
-                ua->sockets->count, ua->timeout_heap->size, timeout_tb >= 0 ? timeout_tb / 10000 : -1,
+    DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "poll(%d sockets, timeout=%d.%dms)",
+                ua->sockets->count, timeout_tb >= 0 ? timeout_tb / 10000 : -1,
                 timeout_tb >= 0 ? (timeout_tb % 10000) / 10 : 0);
     
-    // Handle negative or zero timeout
-    if (timeout_tb < 0) timeout_tb = -1;  // Infinite wait
-    else if (timeout_tb == 0) timeout_tb = 0;  // No wait
-    
-    // Get next timeout
-    struct timeval next_timeout;
-    get_next_timeout(ua, &next_timeout);
-    
-    // Convert requested timeout to timeval
-    struct timeval req_timeout = {0};
-    if (timeout_tb >= 0) {
-        req_timeout.tv_sec = timeout_tb / 10000;
-        req_timeout.tv_usec = (timeout_tb % 10000) * 100;
-    }
-    
-    struct timeval poll_timeout;
-    if (timeout_tb < 0) {
-        poll_timeout = next_timeout;
-    } else {
-        if (next_timeout.tv_sec < req_timeout.tv_sec ||
-            (next_timeout.tv_sec == req_timeout.tv_sec && next_timeout.tv_usec < req_timeout.tv_usec)) {
-            poll_timeout = next_timeout;
-        } else {
-            poll_timeout = req_timeout;
-        }
-    }
-    if (poll_timeout.tv_sec == 0 && poll_timeout.tv_usec == 0 && timeout_tb > 0) poll_timeout = req_timeout;
-
+    uint64_t next_ms = get_next_timeout_ms(ua);  // 0=expired, ~0=no timers, >0=ms to wait
     
     int timeout_ms;
-    if (timeout_tb < 0 && (next_timeout.tv_sec > 0 || next_timeout.tv_usec > 0)) {
-        timeout_ms = (poll_timeout.tv_sec * 1000) + (poll_timeout.tv_usec / 1000);
-    } else if (timeout_tb < 0) {
-        timeout_ms = -1;  // Infinite
+    if (timeout_tb < 0) {
+        // Infinite wait or until next timer
+        if (next_ms == 0)         timeout_ms = 0;    // Expired timer, don't wait
+        else if (next_ms != ~TWHEEL_C(0)) timeout_ms = (int)next_ms; // Wait for next timer
+        else                     timeout_ms = -1;   // No timers, infinite wait
     } else {
-        timeout_ms = (poll_timeout.tv_sec * 1000) + (poll_timeout.tv_usec / 1000);
+        int req_ms = timeout_tb / 10;  // timebase to ms
+        if (next_ms == 0)        timeout_ms = 0;    // Expired timer, don't wait
+        else if (next_ms != ~TWHEEL_C(0)) timeout_ms = (int)(next_ms < (uint64_t)req_ms ? next_ms : (uint64_t)req_ms);
+        else                     timeout_ms = req_ms;
     }
     
-    // Count active sockets
     int socket_count = ua->sockets->count;
     if (socket_count == 0 && timeout_ms == -1) {
-        // No sockets and infinite wait - but we have timers? Wait for timer
-        if (ua->timeout_heap->size > 0) {
-            timeout_ms = (poll_timeout.tv_sec * 1000) + (poll_timeout.tv_usec / 1000);
-        } else {
-            // Nothing to do - return immediately
-            return;
-        }
+        // No sockets and infinite wait — but we might have timers
+        if (twheels_pending(ua->twheel) || twheels_expired(ua->twheel))
+            timeout_ms = 0;  // Let process_timeouts handle them
+        else
+            return;          // Nothing to do
     }
     
 #if HAS_EPOLL
@@ -1144,34 +1032,11 @@ void uasync_poll(struct UASYNC* ua, int timeout_tb) {
             DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "select→fd=%d r=%d w=%d e=%d", (int)s, has_read, has_write, has_except);
             
             if (has_except) {
-                if (node->except_cbk) {
-                    node->except_cbk(node->fd, node->user_data);
-                }
+                if (node->except_cbk) node->except_cbk(node->fd, node->user_data);
             }
 
-            if (has_read) {
-                if (node->type == SOCKET_NODE_TYPE_SOCK) {
-                    if (node->read_cbk_sock) {
-                        node->read_cbk_sock(node->sock, node->user_data);
-                    }
-                } else {
-                    if (node->read_cbk) {
-                        node->read_cbk(node->fd, node->user_data);
-                    }
-                }
-            }
-            
-            if (has_write) {
-                if (node->type == SOCKET_NODE_TYPE_SOCK) {
-                    if (node->write_cbk_sock) {
-                        node->write_cbk_sock(node->sock, node->user_data);
-                    }
-                } else {
-                    if (node->write_cbk) {
-                        node->write_cbk(node->fd, node->user_data);
-                    }
-                }
-            }
+            if (has_read)  socket_node_dispatch_read(node);
+            if (has_write) socket_node_dispatch_write(node);
         }
     }
 #else
@@ -1202,14 +1067,6 @@ void uasync_poll(struct UASYNC* ua, int timeout_tb) {
             if (ua->poll_fds[i].revents == 0) continue;
             DEBUG_DEBUG(DEBUG_CATEGORY_UASYNC, "poll→fd=%d rev=0x%x", ua->poll_fds[i].fd, ua->poll_fds[i].revents);
             
-            /* Handle wakeup fd separately */
-            if (wakeup_fd_present && i == 0) {
-                if (ua->poll_fds[i].revents & POLLIN) {
-                    drain_wakeup_pipe(ua);
-                }
-                continue;
-            }
-            
             /* Socket event - lookup by fd */
             struct socket_node* node = socket_array_get(ua->sockets, ua->poll_fds[i].fd);
             if (!node) {  // Try by socket_t (in case this is a socket)
@@ -1220,44 +1077,16 @@ void uasync_poll(struct UASYNC* ua, int timeout_tb) {
             
             /* Check for error conditions first */
             if (ua->poll_fds[i].revents & (POLLERR | POLLHUP | POLLNVAL)) {
-                /* Treat as exceptional condition */
-                if (node->except_cbk) {
-                    node->except_cbk(node->fd, node->user_data);
-                }
+                if (node->except_cbk) node->except_cbk(node->fd, node->user_data);
             }
 
             /* Exceptional data (out-of-band) */
             if (ua->poll_fds[i].revents & POLLPRI) {
-                if (node->except_cbk) {
-                    node->except_cbk(node->fd, node->user_data);
-                }
+                if (node->except_cbk) node->except_cbk(node->fd, node->user_data);
             }
 
-            /* Read readiness - use appropriate callback based on socket type */
-            if (ua->poll_fds[i].revents & POLLIN) {
-                if (node->type == SOCKET_NODE_TYPE_SOCK) {
-                    if (node->read_cbk_sock) {
-                        node->read_cbk_sock(node->sock, node->user_data);
-                    }
-                } else {
-                    if (node->read_cbk) {
-                        node->read_cbk(node->fd, node->user_data);
-                    }
-                }
-            }
-            
-            /* Write readiness - use appropriate callback based on socket type */
-            if (ua->poll_fds[i].revents & POLLOUT) {
-                if (node->type == SOCKET_NODE_TYPE_SOCK) {
-                    if (node->write_cbk_sock) {
-                        node->write_cbk_sock(node->sock, node->user_data);
-                    }
-                } else {
-                    if (node->write_cbk) {
-                        node->write_cbk(node->fd, node->user_data);
-                    }
-                }
-            }
+            if (ua->poll_fds[i].revents & POLLIN)  socket_node_dispatch_read(node);
+            if (ua->poll_fds[i].revents & POLLOUT) socket_node_dispatch_write(node);
         }
     }
 #endif
@@ -1267,9 +1096,6 @@ void uasync_poll(struct UASYNC* ua, int timeout_tb) {
 }
 
 
-// Put this near the top of u_async.c, after includes and before uasync_create
-
-
 #ifdef _WIN32
 static void wakeup_read_callback_win(socket_t sock, void* arg) {
     (void)sock;                     // не нужен
@@ -1330,8 +1156,8 @@ struct UASYNC* uasync_create(void) {
         return NULL;
     }
 
-    ua->timeout_heap = timeout_heap_create(16);
-    if (!ua->timeout_heap) {
+    ua->twheel = twheels_open(TWHEEL_mHZ);
+    if (!ua->twheel) {
         socket_array_destroy(ua->sockets);
         if (ua->wakeup_initialized) {
 #ifdef _WIN32
@@ -1347,9 +1173,9 @@ struct UASYNC* uasync_create(void) {
     }
 
     // Initialize timeout pool
-    ua->timeout_pool = memory_pool_init(sizeof(struct timeout_node));
+    ua->timeout_pool = memory_pool_init(sizeof(struct timeout_node), "timeout_pool");
     if (!ua->timeout_pool) {
-        timeout_heap_destroy(ua->timeout_heap);
+        twheels_close(ua->twheel);
         socket_array_destroy(ua->sockets);
         if (ua->wakeup_initialized) {
 #ifdef _WIN32
@@ -1364,9 +1190,6 @@ struct UASYNC* uasync_create(void) {
         return NULL;
     }
 
-    // Set callback to u_free timeout nodes and update counters
-    timeout_heap_set_free_callback(ua->timeout_heap, ua, timeout_node_free_callback);
-
     DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "Creating TH1...");
     // Initialize epoll on Linux
     ua->epoll_fd = -1;
@@ -1479,18 +1302,11 @@ void uasync_print_resources(struct UASYNC* ua, const char* prefix) {
            (ssize_t)(ua->socket_alloc_count - ua->socket_free_count));
     
     // Показать активные таймеры
-    if (ua->timeout_heap) {
-        size_t active_timers = 0;
-        // Безопасное чтение без извлечения - просто итерируем по массиву
-        for (size_t i = 0; i < ua->timeout_heap->size; i++) {
-            if (!ua->timeout_heap->heap[i].deleted) {
-                active_timers++;
-                struct timeout_node* node = (struct timeout_node*)ua->timeout_heap->heap[i].data;
-                DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "   Timer: node=%p, expires=%llu ms",
-                       node, (unsigned long long)ua->timeout_heap->heap[i].expiration);
-            }
-        }
-        DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "   Active timers in heap: %zu", active_timers);
+    if (ua->twheel) {
+        bool has_pending = twheels_pending(ua->twheel);
+        bool has_expired = twheels_expired(ua->twheel);
+        DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "   Timing wheel: pending=%d expired=%d curtime=%llu",
+               has_pending, has_expired, (unsigned long long)ua->twheel->curtime);
     }
     
     // Показать активные сокеты
@@ -1549,21 +1365,30 @@ void uasync_destroy(struct UASYNC* ua, int close_fds) {
     }
     ua->immediate_queue_tail = NULL;
     
-    // Очистить heap
-    if (ua->timeout_heap) {
-        while (1) {
-            TimeoutEntry entry;
-            if (timeout_heap_pop(ua->timeout_heap, &entry) != 0) break;
-            struct timeout_node* node = (struct timeout_node*)entry.data;
-
-            // Free all timer nodes (avoid double-u_free bug)
-            if (node) {
-                ua->timer_free_count++;
-                memory_pool_free(ua->timeout_pool, node);
+    // Очистить timing wheel
+    if (ua->twheel) {
+        for (int w = 0; w < 4; w++) {
+            for (int s = 0; s < 64; s++) {
+                struct twheel *to;
+                while (!TAILQ_EMPTY(&ua->twheel->wheel[w][s])) {
+                    to = TAILQ_FIRST(&ua->twheel->wheel[w][s]);
+                    TAILQ_REMOVE(&ua->twheel->wheel[w][s], to, tqe);
+                    struct timeout_node* node = (struct timeout_node*)to;
+                    ua->timer_free_count++;
+                    memory_pool_free(ua->timeout_pool, node);
+                }
             }
         }
-        timeout_heap_destroy(ua->timeout_heap);
-        ua->timeout_heap = NULL;
+        struct twheel *to;
+        while (!TAILQ_EMPTY(&ua->twheel->expired)) {
+            to = TAILQ_FIRST(&ua->twheel->expired);
+            TAILQ_REMOVE(&ua->twheel->expired, to, tqe);
+            struct timeout_node* node = (struct timeout_node*)to;
+            ua->timer_free_count++;
+            memory_pool_free(ua->timeout_pool, node);
+        }
+        twheels_close(ua->twheel);
+        ua->twheel = NULL;
     }
 
     // Destroy timeout pool

lib/u_async.h

@@ -6,9 +6,9 @@
 #define UASYNC_H
 
 #include "platform_compat.h"
+#include "memory_pool.h"
 #include <stddef.h>
 #include <signal.h>
-#include "timeout_heap.h"
 #include "socket_compat.h"
 
 typedef void (*timeout_callback_t)(void* user_arg);// передаёт user_arg из uasync_set_timeout
@@ -28,9 +28,8 @@ typedef int err_t;
 
 typedef void (*uasync_post_callback_t)(void* user_arg);
 
-#include "memory_pool.h"
-
-struct timeout_node;  // Forward declaration
+struct timeout_node;
+struct twheels;
 
 struct posted_task {
         uasync_post_callback_t callback;
@@ -43,7 +42,7 @@ struct UASYNC {
     struct memory_pool* timeout_pool;  // Pool for timeout_node allocation
     struct timeout_node* immediate_queue_head;  // FIFO queue for immediate execution
     struct timeout_node* immediate_queue_tail;
-    TimeoutHeap* timeout_heap;  // Heap for timeout management
+    struct twheels* twheel;  // Timing wheel for timeout management
     struct socket_array* sockets; // Array-based socket management
     // Debug counters for memory allocation tracking
     size_t timer_alloc_count;
@@ -74,7 +73,6 @@ struct UASYNC {
 
 // Type definitions
 typedef struct UASYNC uasync_t;
-typedef struct UASYNC UASYNC_t;
 
 // Instance API - основной API для работы с uasync
 struct UASYNC* uasync_create(void);

src/control_server.c

@@ -14,7 +14,6 @@
 #include "pkt_normalizer.h"
 #include "../tools/etcpmon/etcpmon_protocol.h"
 #include "../lib/u_async.h"
-#include "../lib/timeout_heap.h"
 #include "../lib/memory_pool.h"
 #include "../lib/debug_config.h"
 #include "../lib/mem.h"
@@ -1028,11 +1027,7 @@ static void send_metrics(struct control_server* server, struct control_client* c
     }
 
     /* System resources */
-    if (instance->ua && instance->ua->timeout_heap) {
-        rsp->etcp.active_timeouts = (uint32_t)timeout_heap_get_size(instance->ua->timeout_heap);
-    } else {
-        rsp->etcp.active_timeouts = 0;
-    }
+    rsp->etcp.active_timeouts = 0;
 
     rsp->etcp.busy_memory_blocks = (uint32_t)(u_get_allocated_count() - memory_pool_get_total_free_blocks());
     

src/dummynet.c

@@ -355,7 +355,7 @@ struct dummynet* dummynet_create(struct UASYNC* ua, const char* bind_ip, uint16_
     dn->listen_port = listen_port;
 
     /* Создаём пул для пакетов */
-    dn->pkt_pool = memory_pool_init(sizeof(struct ll_entry) + sizeof(struct dummynet_pkt));
+    dn->pkt_pool = memory_pool_init(sizeof(struct ll_entry) + sizeof(struct dummynet_pkt), "pkt_pool");
     if (!dn->pkt_pool) {
         DEBUG_ERROR(DEBUG_CATEGORY_DUMMYNET, "Failed to create packet pool");
         u_free(dn);

src/etcp.c

@@ -205,8 +205,8 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance, char* n
     etcp->input_wait_ack = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE, 0, 4, "input_wait_ack"); // Hash for wait_ack
     etcp->recv_q = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE, 0, 4, "recv_q"); // Hash for recv_q
     etcp->ack_q = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE, 0, 4, "ack_q");
-    etcp->inflight_pool = memory_pool_init(sizeof(struct INFLIGHT_PACKET));
-    etcp->io_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT));
+    etcp->inflight_pool = memory_pool_init(sizeof(struct INFLIGHT_PACKET), "inflight_pool");
+    etcp->io_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT), "io_pool");
     etcp->optimal_inflight=100000;
     etcp->initialized=0;
     etcp->links_up=0;
@@ -752,6 +752,7 @@ static void ack_timeout_check(struct ETCP_CONN* etcp) {
             // shedule timer
             int64_t next_timeout=timeout - elapsed;
             if (next_timeout<0) next_timeout=0;
+            if (next_timeout>timeout) next_timeout=timeout;
             DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "[%s] retransmission timer set for %llu units", etcp->log_name, next_timeout);
             etcp->retrans_timer = uasync_set_timeout(etcp->instance->ua, next_timeout+10, etcp, ack_timeout_cb, "etcp_retrans");
             return;

src/etcp_connections.c

@@ -746,8 +746,6 @@ void etcp_socket_remove(struct ETCP_SOCKET* conn) {
 }
 
 
-static void bbr_cwnd_updated(void* ctx, uint32_t new_cwnd);
-
 struct ETCP_LINK* etcp_link_new(struct ETCP_CONN* etcp, struct ETCP_SOCKET* conn, struct sockaddr_storage* remote_addr, uint8_t is_server) {
     DEBUG_TRACE(DEBUG_CATEGORY_CONNECTION, "");
     if (!remote_addr) return NULL;
@@ -833,9 +831,12 @@ struct ETCP_LINK* etcp_link_new(struct ETCP_CONN* etcp, struct ETCP_SOCKET* conn
     while (l && l->next) l=l->next;
     if (l) l->next = link; else etcp->links = link;
 
-    etcp_link_update_inflight_lim(link, link->mtu * 4);
-    link->bbr->on_cwnd_update = bbr_cwnd_updated;
-    link->bbr->cwnd_update_ctx = link;
+    link->inflight_lim_bytes = link->mtu * 4;     // BBR init_cwnd (~4 packets)
+
+// пересчитать connection-level optimal_inflight
+    {   uint32_t sum = 0;
+        for (struct ETCP_LINK* tl = etcp->links; tl; tl = tl->next) sum += tl->inflight_lim_bytes;
+        etcp->optimal_inflight = sum; }
 
     DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "NEW link initialized on etcp=[%s] link=%p socket=%s id=%d is_server=%d mtu=%d", etcp->log_name, link, conn->name, link->local_link_id, link->is_server, link->mtu);
 
@@ -847,18 +848,6 @@ struct ETCP_LINK* etcp_link_new(struct ETCP_CONN* etcp, struct ETCP_SOCKET* conn
     return link;
 }
 
-static void bbr_cwnd_updated(void* ctx, uint32_t new_cwnd) {
-    etcp_link_update_inflight_lim((struct ETCP_LINK*)ctx, new_cwnd);
-}
-
-void etcp_link_update_inflight_lim(struct ETCP_LINK* link, uint32_t new_lim) {
-    link->inflight_lim_bytes = new_lim;
-    struct ETCP_CONN* etcp = link->etcp;
-    uint32_t sum = 0;
-    for (struct ETCP_LINK* tl = etcp->links; tl; tl = tl->next) sum += tl->inflight_lim_bytes;
-    etcp->optimal_inflight = sum;
-}
-
 void etcp_link_close(struct ETCP_LINK* link) {
     DEBUG_TRACE(DEBUG_CATEGORY_CONNECTION, "");
     if (!link) return;
@@ -940,7 +929,7 @@ int etcp_encrypt_send(struct ETCP_DGRAM* dgram) {
     dgram->timestamp=get_current_timestamp();
     
     dgram->link->total_encrypted += dgram->data_len;
-    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump("Before encryption", dgram->data, dgram->data_len);
+    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO, "Before encryption", dgram->data, dgram->data_len);
     sc_encrypt(sc, (uint8_t*)&dgram->timestamp, 3 + len, enc_buf, &enc_buf_len);
     if (enc_buf_len == 0) {
         DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "eencryption failed for node %016llx", (unsigned long long)dgram->link->etcp->instance->node_id);
@@ -950,7 +939,7 @@ int etcp_encrypt_send(struct ETCP_DGRAM* dgram) {
         dgram->link->send_errors++; errcode=3; goto es_err; }
     memcpy(enc_buf+enc_buf_len, dgram->data+len, dgram->noencrypt_len);
     
-    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump("Encrypted", enc_buf, enc_buf_len + dgram->noencrypt_len);
+    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO, "Encrypted", enc_buf, enc_buf_len + dgram->noencrypt_len);
     
     struct sockaddr_storage* addr=&dgram->link->remote_addr;
     socklen_t addr_len = (addr->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
@@ -1180,7 +1169,7 @@ void etcp_connections_read_callback_socket(socket_t sock, void* arg) {
     }
     
     // DUMP: Show received packet content
-    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump("RECV in:", data, recv_len); // link unknown at this point
+    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CRYPTO, "RECV in:", data, recv_len);
 
     struct ETCP_DGRAM* pkt = memory_pool_alloc(e_sock->instance->pkt_pool);
     if (!pkt) return;

src/etcp_connections.h

@@ -262,7 +262,6 @@ void etcp_socket_remove(struct ETCP_SOCKET* conn);
 // connection functions
 // создает новый канал связи для etcp подключения (ETCP_CONN)
 struct ETCP_LINK* etcp_link_new(struct ETCP_CONN* etcp, struct ETCP_SOCKET* conn, struct sockaddr_storage* remote_addr, uint8_t is_server);
-void etcp_link_update_inflight_lim(struct ETCP_LINK* link, uint32_t new_lim);
 void etcp_link_close(struct ETCP_LINK* link);
 //int etcp_input_cbk(struct packet_buffer* pkt, struct ETCP_SOCKET* conn);// получает расшифрованный пакет
 int etcp_encrypt_send(struct ETCP_DGRAM* dgram);// зашифровывает и отправляет пакет

src/lwip_tcp/lwip_tcp.c

@@ -95,15 +95,15 @@ struct lwip_tcp_ctx *lwip_tcp_init(struct UASYNC *ua, tcp_output_fn output, void
     ctx->ua = ua;
     ctx->output = output;
     ctx->output_arg = output_arg;
-    ctx->pcb_pool = memory_pool_init(sizeof(struct tcp_pcb));
-    ctx->pcb_listen_pool = memory_pool_init(sizeof(struct tcp_pcb_listen));
-    ctx->seg_pool = memory_pool_init(sizeof(struct tcp_seg));
+    ctx->pcb_pool = memory_pool_init(sizeof(struct tcp_pcb), "pcb_pool");
+    ctx->pcb_listen_pool = memory_pool_init(sizeof(struct tcp_pcb_listen), "pcb_listen_pool");
+    ctx->seg_pool = memory_pool_init(sizeof(struct tcp_seg), "seg_pool");
     if (!ctx->pcb_pool || !ctx->pcb_listen_pool || !ctx->seg_pool) {
         lwip_tcp_destroy(ctx);
         return NULL;
     }
     ctx->iss_seed = (uint16_t)(get_time_tb() & 0xFFFF);
-    ctx->tmr_interval_ms = TCP_TMR_INTERVAL;
+    ctx->tmr_interval_ms = TCP_TMR_INTERVAL / 4;
     ctx->rto_min_ms = 3000;
     ctx->rto_max_ms = 0;
     ctx->timer = uasync_set_timeout(ua, ctx->tmr_interval_ms * 10, ctx, tcp_tmr_cb, "lwip_tcp_tmr");
@@ -749,7 +749,6 @@ void tcp_slowtmr(struct lwip_tcp_ctx *ctx)
             tcp_pcb_purge(pcb);
             if (prev != NULL) {
                 prev->next = pcb->next;
-                prev->next_owner = PCB_NEXT_SLOWTMR;
             } else {
                 ctx->active_pcbs = pcb->next;
             }
@@ -808,18 +807,16 @@ void tcp_slowtmr(struct lwip_tcp_ctx *ctx)
             tcp_pcb_purge(pcb);
             if (prev != NULL) {
                 prev->next = pcb->next;
-                prev->next_owner = PCB_NEXT_SLOWTMR;
             } else {
                 ctx->tw_pcbs = pcb->next;
             }
             pcb2 = pcb;
             pcb = pcb->next;
             int self_loop = (pcb == pcb2);
-            uint8_t sl_owner = pcb2->next_owner;
             tcp_free(pcb2);
             if (self_loop) {
-                DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in tcp_slowtmr: freed pcb=%p state=TIME_WAIT port=%u next_owner=%d, clearing tw_pcbs",
-                            (void*)pcb2, pcb2->local_port, sl_owner);
+                DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in tcp_slowtmr: freed pcb=%p state=TIME_WAIT port=%u, clearing tw_pcbs",
+                            (void*)pcb2, pcb2->local_port);
                 ctx->tw_pcbs = NULL;
                 break;
             }
@@ -1050,8 +1047,8 @@ static void tcp_kill_timewait(struct lwip_tcp_ctx *ctx)
     }
     if (inactive != NULL) {
         if (inactive->next == inactive) {
-            DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in tcp_kill_timewait: aborting pcb=%p next_owner=%d, clearing tw_pcbs",
-                        (void*)inactive, inactive->next_owner);
+            DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in tcp_kill_timewait: aborting pcb=%p, clearing tw_pcbs",
+                        (void*)inactive);
             ctx->tw_pcbs = NULL;
             tcp_free(inactive);
         } else {
@@ -1115,8 +1112,8 @@ struct tcp_pcb *tcp_alloc(struct lwip_tcp_ctx *ctx, uint8_t prio)
         pcb->rcv_wnd = pcb->rcv_ann_wnd = TCPWND16(TCP_WND);
         pcb->ttl = 64;
         pcb->mss = INITIAL_MSS;
-        pcb->rto = (int16_t)(ctx->rto_min_ms / TCP_SLOW_INTERVAL);
-        pcb->sv  = (int16_t)(ctx->rto_min_ms / TCP_SLOW_INTERVAL);
+        pcb->rto = (int16_t)(TCP_RTO_MIN_MS / TCP_SLOW_INTERVAL);
+        pcb->sv  = (int16_t)(TCP_RTO_MIN_MS / TCP_SLOW_INTERVAL);
         pcb->rtime = -1;
         pcb->cwnd = 1;
         DEBUG_INFO(DEBUG_CATEGORY_GENERAL, "tcp_alloc: cwnd=%u snd_buf=%u mss=%u snd_wnd=%u", pcb->cwnd, pcb->snd_buf, pcb->mss, pcb->snd_wnd);

src/lwip_tcp/lwip_tcp.h

@@ -67,15 +67,6 @@ enum tcp_err_enum {
     LERR_CLSD       = -15,
     LERR_ARG        = -16
 };
-
-// кто последним записал pcb->next (диагностика зацикливания tw_pcbs)
-enum pcb_next_owner {
-    PCB_NEXT_NONE     = 0,
-    PCB_NEXT_REG      = 1,
-    PCB_NEXT_RMV      = 2,
-    PCB_NEXT_SLOWTMR  = 3,
-    PCB_NEXT_INPUT    = 4,
-};
 typedef int err_t;
 
 // Forward declaration for callbacks
@@ -175,9 +166,6 @@ struct tcp_pcb {
     tcp_connected_fn connected;
     tcp_poll_fn poll;
     tcp_err_fn errf;
-
-    uint8_t next_owner;     // who last wrote pcb->next (enum pcb_next_owner)
-
     uint32_t keep_idle;
     uint8_t persist_cnt;
     uint8_t persist_backoff;
@@ -193,7 +181,6 @@ struct tcp_pcb_listen {
     uint8_t prio;
     uint16_t local_port;
     uint32_t local_ip;
-    uint8_t next_owner;
     tcp_accept_fn accept;
 };
 

src/lwip_tcp/lwip_tcp_in.c

@@ -198,9 +198,7 @@ void lwip_tcp_input(struct lwip_tcp_ctx *ctx, struct pbuf *p,
             pcb->local_ip    == dst_ip) {
             if (prev != NULL) {
                 prev->next = pcb->next;
-                prev->next_owner = PCB_NEXT_INPUT;
                 pcb->next = ctx->active_pcbs;
-                pcb->next_owner = PCB_NEXT_INPUT;
                 ctx->active_pcbs = pcb;
             }
             break;
@@ -225,8 +223,8 @@ void lwip_tcp_input(struct lwip_tcp_ctx *ctx, struct pbuf *p,
                 pcb->remote_ip   == src_ip &&
                 pcb->local_ip    == dst_ip) {
                 if (pcb->next == pcb) {
-                    DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in lwip_tcp_input: pcb=%p sport=%u dport=%u next_owner=%d, aborting",
-                                (void*)pcb, sport, dport, pcb->next_owner);
+                    DEBUG_ERROR(DEBUG_CATEGORY_ALL, "TW_PCBS SELF-LOOP in lwip_tcp_input: pcb=%p sport=%u dport=%u, aborting",
+                                (void*)pcb, sport, dport);
                     tcp_abort(pcb);
                 } else {
                     tcp_timewait_input(pcb);
@@ -249,9 +247,7 @@ void lwip_tcp_input(struct lwip_tcp_ctx *ctx, struct pbuf *p,
         if (lpcb != NULL) {
             if (prev != NULL) {
                 ((struct tcp_pcb_listen *)prev)->next = lpcb->next;
-                ((struct tcp_pcb_listen *)prev)->next_owner = PCB_NEXT_INPUT;
                 lpcb->next = ctx->listen_pcbs;
-                lpcb->next_owner = PCB_NEXT_INPUT;
                 ctx->listen_pcbs = (struct tcp_pcb *)lpcb;
             }
             tcp_listen_input(lpcb);

src/lwip_tcp/lwip_tcp_opts.h

@@ -14,9 +14,10 @@
 #define TCP_FAST_INTERVAL      TCP_TMR_INTERVAL
 #define TCP_SLOW_INTERVAL      (2 * TCP_TMR_INTERVAL)
 
-#define TCP_FIN_WAIT_TIMEOUT   6000      // ms
-#define TCP_SYN_RCVD_TIMEOUT   6000      // ms
-#define TCP_MSL                25000     // ms (2*MSL = 50s)
+#define TCP_RTO_MIN_MS         3000      // ms, initial RTO
+#define TCP_FIN_WAIT_TIMEOUT   20000     // ms
+#define TCP_SYN_RCVD_TIMEOUT   20000     // ms
+#define TCP_MSL                60000     // ms (2*MSL = 120s)
 #define TCP_OOSEQ_TIMEOUT      6         // x RTO
 
 #define TCP_KEEPIDLE_DEFAULT   7200000   // ms (unused, no keepalive)

src/lwip_tcp/lwip_tcp_priv.h

@@ -236,15 +236,13 @@ void lwip_tcp_stats_clear(struct lwip_tcp_ctx *ctx);
 
 // PCB list management
 #define TCP_REG(pcbs, npcb) do { \
-    (npcb)->next_owner = PCB_NEXT_REG; \
     (npcb)->next = *(pcbs); *(pcbs) = (npcb); \
 } while(0)
 
 #define TCP_RMV(pcbs, npcb) do { \
     if(*(pcbs) == (npcb)) { *(pcbs) = (*pcbs)->next; } \
-    else { struct tcp_pcb *_tmp; for(_tmp = *(pcbs); _tmp != NULL; _tmp = _tmp->next) { if(_tmp->next == (npcb)) { _tmp->next_owner = PCB_NEXT_SLOWTMR; _tmp->next = (npcb)->next; break; } } } \
+    else { struct tcp_pcb *_tmp; for(_tmp = *(pcbs); _tmp != NULL; _tmp = _tmp->next) { if(_tmp->next == (npcb)) { _tmp->next = (npcb)->next; break; } } } \
     (npcb)->next = NULL; \
-    (npcb)->next_owner = PCB_NEXT_RMV; \
 } while(0)
 
 #define TCP_REG_ACTIVE(ctx, npcb) TCP_REG(&(ctx)->active_pcbs, npcb)

src/pkt_normalizer.c

@@ -241,7 +241,7 @@ static void pn_send_to_etcp(struct PKTNORM* pn) {
     frag->ll.memlen     = pn->etcp->instance->data_pool->object_size;
     
     DEBUG_INFO(DEBUG_CATEGORY_NORMALIZER, "pn->etcp: size=%d memlen=%d frag_size=%d", frag->ll.len, frag->ll.memlen, pn->frag_size);
-    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump("NORM->ETCP", pn->data, frag->ll.len);
+    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP, "NORM->ETCP", pn->data, frag->ll.len);
 
     queue_data_put(pn->etcp->input_queue, (struct ll_entry*)frag);
     // Сбросить структуру (dgram передан во фрагмент, не освобождаем)
@@ -286,7 +286,7 @@ static void etcp_input_ready_cb(struct ll_queue* q, void* arg) {
         return;
         }
 
-    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump("->NORM", in_dgram->dgram, in_dgram->len);
+    if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP, "->NORM", in_dgram->dgram, in_dgram->len);
 
     pn_buf_renew(pn);
     // DEBUG_INFO(DEBUG_CATEGORY_NORMALIZER, "pn_packer: new pkt hdrpos=%d",pn->data_ptr);
@@ -350,7 +350,7 @@ static void pn_unpacker_cb(struct ll_queue* q, void* arg) {
         uint8_t* payload = frag->ll.dgram;
         uint16_t len = frag->ll.len;
         uint16_t ptr = 0;
-        if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump("ETCP->NORM", payload, len);
+        if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP, "ETCP->NORM", payload, len);
 
         DEBUG_DEBUG(DEBUG_CATEGORY_NORMALIZER, "unpacking fragment len=%d", len);
 
@@ -395,7 +395,7 @@ static void pn_unpacker_cb(struct ll_queue* q, void* arg) {
 
             if (pn->recvpart->len == pn->recvpart->memlen) {
                 DEBUG_DEBUG(DEBUG_CATEGORY_NORMALIZER, "unpacked dgram (size=%d)", pn->recvpart->len);
-                if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump("NORM->", pn->recvpart->dgram, pn->recvpart->len);
+                if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP)) log_dump(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_DUMP, "NORM->", pn->recvpart->dgram, pn->recvpart->len);
                 queue_data_put(pn->output, pn->recvpart);
                 pn->out_total_pkts++;
                 pn->out_total_bytes += pn->recvpart->len;

src/proxy/tcp_proxy_client.c

@@ -564,7 +564,7 @@ struct tcp_proxy_client* tcp_proxy_client_create(struct UTUN_INSTANCE* inst, str
     p->via_node_id = via_node_id;
     p->mappings = mappings; p->mapping_count = mapping_count;
 
-    p->entry_pool = memory_pool_init(sizeof(struct ll_entry));
+    p->entry_pool = memory_pool_init(sizeof(struct ll_entry), "entry_pool");
     if (!p->entry_pool) { DEBUG_ERROR(DEBUG_CATEGORY_SOCKET, "tcp_proxy_client_create: memory_pool_init failed"); u_free(p); return NULL; }
 
     p->tun = tun_init_nat(ua, tun_name, tun_ip, mtu > 0 ? mtu : 1500, test_mode);

src/proxy/tcp_proxy_server.c

@@ -325,6 +325,11 @@ int tcp_proxy_server_handle_data(struct UTUN_INSTANCE* inst, struct ETCP_CONN* c
     }
     size_t data_len = entry->len - TCP_PROXY_HDR_SIZE;
     if (data_len > 0) {
+        if (data_len > rc->tc->data_pool->object_size) {
+            DEBUG_ERROR(DEBUG_CATEGORY_SOCKET, "tcp_proxy_server: data_len=%zu > pool_sz=%zu, dropping sid=%08x",
+                        data_len, rc->tc->data_pool->object_size, stream_id);
+            queue_dgram_free(entry); queue_entry_free(entry); return -1;
+        }
         struct ll_entry* e = queue_entry_new_from_pool(rc->tc->entry_pool);
         uint8_t* buf = memory_pool_alloc(rc->tc->data_pool);
         if (e && buf) {

src/proxy/udp_proxy.c

@@ -40,7 +40,7 @@ static struct udp_flow* flow_find(struct udp_flow* head, uint64_t client_node_id
 static void flow_read_cb(socket_t sock, void* arg) {
     (void)sock; struct udp_flow* f = (struct udp_flow*)arg;
     if (!f || f->sock == SOCKET_INVALID || !g_udp_ctx) return;
-    uint8_t buf[65536];
+    uint8_t buf[1600];
     struct sockaddr_in from; socklen_t flen = sizeof(from);
     ssize_t n = recvfrom(f->sock, buf, sizeof(buf), 0, (struct sockaddr*)&from, &flen);
     if (n <= 0) return;

src/tun_if.c

@@ -161,7 +161,7 @@ struct tun_if* tun_init(struct UASYNC* ua, struct utun_config* config)
         tun->test_fd = fds[1];
     }
 
-    tun->pool = memory_pool_init(sizeof(struct ll_entry));
+    tun->pool = memory_pool_init(sizeof(struct ll_entry), "tun_pool");
     if (!tun->pool) goto fail;
 
     tun->output_queue = queue_new(ua, 0, 0, 0, "TUN output");
@@ -253,7 +253,7 @@ struct tun_if* tun_init_nat(struct UASYNC* ua, const char* ifname, const char* i
         tun->test_fd = fds[1];
     }
 
-    tun->pool = memory_pool_init(sizeof(struct ll_entry));
+    tun->pool = memory_pool_init(sizeof(struct ll_entry), "tun_pool");
     if (!tun->pool) goto fail2;
 
     tun->output_queue = queue_new(ua, 0, 0, 0, "NAT TUN output");

src/utun_instance.c

@@ -83,9 +83,9 @@ static int instance_init_common(struct UTUN_INSTANCE* instance, struct UASYNC* u
     }
     
     // Create memory pools
-    instance->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET));
-    instance->data_pool = memory_pool_init(PACKET_DATA_SIZE);
-    instance->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE);
+    instance->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET), "ack_pool");
+    instance->data_pool = memory_pool_init(PACKET_DATA_SIZE, "data_pool");
+    instance->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE, "pkt_pool");
     
     // Create routing module
     if (routing_create(instance) != 0) {

tests/Makefile.am

@@ -42,7 +42,6 @@ check_PROGRAMS = \
 	test_bbr_integration \
 	test_intensive_memory_pool \
 	test_tcp_io \
-	bench_timeout_heap \
 	bench_uasync_timeouts
 
 # Долгие тесты: запускаются только вручную, не включаются в make check

tests/bbr_integration/test_bbr_integration.c

@@ -111,9 +111,9 @@ static struct UTUN_INSTANCE* create_instance(struct UASYNC* u, uint64_t node_id,
     inst->ua       = u;
     inst->node_id  = node_id;
     if (sc_init_local_keys(&inst->my_keys, pub_hex, priv_hex) != SC_OK) { u_free(inst); return NULL; }
-    inst->ack_pool  = memory_pool_init(sizeof(struct ACK_PACKET));
-    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE);
-    inst->pkt_pool  = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE);
+    inst->ack_pool  = memory_pool_init(sizeof(struct ACK_PACKET), "ack_pool");
+    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE, "data_pool");
+    inst->pkt_pool  = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE, "pkt_pool");
     if (!inst->ack_pool || !inst->data_pool || !inst->pkt_pool) { u_free(inst); return NULL; }
     struct utun_config* cfg = u_calloc(1, sizeof(*cfg));
     if (!cfg) { u_free(inst); return NULL; }

tests/bench_uasync_timeouts.c

@@ -71,7 +71,7 @@ static void benchmark_without_sockets(void) {
     printf("Set %d zero timeouts:\n", NUM_TIMEOUTS);
     printf("  Total time: %.3f ms\n", set_time);
     printf("  Average per timeout: %.3f us\n", (set_time * 1000.0) / NUM_TIMEOUTS);
-    printf("  Heap size: %zu\n\n", ua->timeout_heap->size);
+    printf("  Heap size: N/A (timing wheel)\n\n");
 
     // Run mainloop 100 times
     clock_gettime(CLOCK_MONOTONIC, &start);
@@ -84,7 +84,7 @@ static void benchmark_without_sockets(void) {
     printf("Run mainloop (uasync_poll) %d times:\n", NUM_TIMEOUTS);
     printf("  Total time: %.3f ms\n", mainloop_time);
     printf("  Average per iteration: %.3f us\n", (mainloop_time * 1000.0) / NUM_TIMEOUTS);
-    printf("  Heap size after: %zu\n\n", ua->timeout_heap->size);
+    printf("  Heap size after: N/A (timing wheel)\n\n");
 
     printf("--- Results WITHOUT sockets ---\n");
     printf("Set timeouts: %.3f ms (%.3f us/op)\n", set_time, (set_time * 1000.0) / NUM_TIMEOUTS);
@@ -163,7 +163,7 @@ static void benchmark_with_sockets(void) {
     printf("Set %d zero timeouts (with %d sockets open):\n", NUM_TIMEOUTS, NUM_SOCKETS);
     printf("  Total time: %.3f ms\n", set_time);
     printf("  Average per timeout: %.3f us\n", (set_time * 1000.0) / NUM_TIMEOUTS);
-    printf("  Heap size: %zu\n\n", ua->timeout_heap->size);
+    printf("  Heap size: N/A (timing wheel)\n\n");
 
     // Run mainloop 100 times WITH sockets
     clock_gettime(CLOCK_MONOTONIC, &start);
@@ -176,7 +176,7 @@ static void benchmark_with_sockets(void) {
     printf("Run mainloop (uasync_poll) %d times (with sockets):\n", NUM_TIMEOUTS);
     printf("  Total time: %.3f ms\n", mainloop_time);
     printf("  Average per iteration: %.3f us\n", (mainloop_time * 1000.0) / NUM_TIMEOUTS);
-    printf("  Heap size after: %zu\n\n", ua->timeout_heap->size);
+    printf("  Heap size after: N/A (timing wheel)\n\n");
 
     printf("--- Results WITH %d sockets ---\n", NUM_SOCKETS);
     printf("Set timeouts: %.3f ms (%.3f us/op)\n", set_time, (set_time * 1000.0) / NUM_TIMEOUTS);

tests/test_etcp_congestion.c

@@ -102,9 +102,9 @@ static struct UTUN_INSTANCE* create_instance(struct UASYNC* u, uint64_t node_id,
     inst->ua = u;
     inst->node_id = node_id;
     if (sc_init_local_keys(&inst->my_keys, pub_hex, priv_hex) != SC_OK) { u_free(inst); return NULL; }
-    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET));
-    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE);
-    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE);
+    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET), "ack_pool");
+    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE, "data_pool");
+    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE, "pkt_pool");
     if (!inst->ack_pool || !inst->data_pool || !inst->pkt_pool) { u_free(inst); return NULL; }
     struct utun_config* cfg = u_calloc(1, sizeof(*cfg));
     if (!cfg) { u_free(inst); return NULL; }

tests/test_etcp_dummynet.c

@@ -111,9 +111,9 @@ static struct UTUN_INSTANCE* create_instance(struct UASYNC* u, uint64_t node_id,
         return NULL;
     }
     
-    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET));
-    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE);
-    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE);
+    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET), "ack_pool");
+    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE, "data_pool");
+    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE, "pkt_pool");
     
     if (!inst->ack_pool || !inst->data_pool || !inst->pkt_pool) {
         u_free(inst);

tests/test_etcp_reinit_inflight.c

@@ -53,9 +53,9 @@ static struct UTUN_INSTANCE* create_instance(struct UASYNC* u, uint64_t node_id,
     inst->ua = u;
     inst->node_id = node_id;
     if (sc_init_local_keys(&inst->my_keys, pub_hex, priv_hex) != SC_OK) { u_free(inst); return NULL; }
-    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET));
-    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE);
-    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE);
+    inst->ack_pool = memory_pool_init(sizeof(struct ACK_PACKET), "ack_pool");
+    inst->data_pool = memory_pool_init(PACKET_DATA_SIZE, "data_pool");
+    inst->pkt_pool = memory_pool_init(sizeof(struct ETCP_DGRAM) + PACKET_DATA_SIZE, "pkt_pool");
     if (!inst->ack_pool || !inst->data_pool || !inst->pkt_pool) { u_free(inst); return NULL; }
     struct utun_config* cfg = u_calloc(1, sizeof(*cfg));
     if (!cfg) { u_free(inst); return NULL; }

tests/test_intensive_memory_pool.c

@@ -65,7 +65,7 @@ static double test_with_pools(int iterations) {
     struct ll_queue* queue = queue_new(ua, 0, 0, 0,"q2");  // С пулами
     
     // Создать пул памяти для данных
-    struct memory_pool* pool = memory_pool_init(sizeof(struct ll_entry) + 64);
+    struct memory_pool* pool = memory_pool_init(sizeof(struct ll_entry) + 64, "test_pool");
     if (!pool) {
         queue_free(queue);
         uasync_destroy(ua, 0);

tests/test_ll_queue.c

@@ -354,7 +354,7 @@ static void test_limits_hash(void) {
 static void test_pool(void) {
     TEST("memory_pool integration + reuse");
     struct UASYNC *ua = uasync_create();
-    struct memory_pool *pool = memory_pool_init(sizeof(test_data_t));
+    struct memory_pool *pool = memory_pool_init(sizeof(test_data_t), "test_data_pool");
     struct ll_queue *q = queue_new(ua, 0, 0, 0, "q8");
 
     size_t alloc1 = 0, reuse1 = 0;

tests/test_pkt_normalizer_standalone.c

@@ -185,7 +185,7 @@ static int init_mock_etcp(void) {
     mock_etcp.instance = (struct UTUN_INSTANCE*)&mock_instance;
     
     // Create io_pool for ETCP_FRAGMENT allocation
-    mock_etcp.io_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT));
+    mock_etcp.io_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT), "io_pool");
     if (!mock_etcp.io_pool) {
         printf("Failed to create io_pool\n");
         return -1;
@@ -271,7 +271,7 @@ int main() {
     }
     
     // Initialize memory pool
-    mock_instance.data_pool = memory_pool_init(MTU_SIZE);
+    mock_instance.data_pool = memory_pool_init(MTU_SIZE, "data_pool");
     
     if (!mock_instance.data_pool) {
         printf("Failed to create memory pool\n");

tests/test_u_async_comprehensive.c

@@ -10,7 +10,6 @@
 #include "../lib/platform_compat.h"
 
 #include "u_async.h"
-#include "timeout_heap.h"
 #include "debug_config.h"
 #include "../lib/mem.h"