From 4fae778fe58b1af23307b7cd7225274f9d0a027a Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 01:25:14 +0200
Subject: [PATCH 1/6] added sntp, dns and updated timer and net_proc

---
 kernel/exceptions/timer.c                  | 197 +++++++++++++++++++--
 kernel/exceptions/timer.h                  |  35 +++-
 kernel/networking/network_dispatch.cpp     |   1 +
 kernel/networking/processes/net_proc.c     | 164 +++++++++--------
 shared/net/application_layer/dhcp_daemon.c |  20 +--
 shared/net/application_layer/dhcp_daemon.h |   2 +-
 shared/net/application_layer/dns.c         | 123 +++++++++++++
 shared/net/application_layer/dns.h         |  26 +++
 shared/net/application_layer/dns_daemon.c  |  19 ++
 shared/net/application_layer/dns_daemon.h  |  14 ++
 shared/net/application_layer/sntp.c        | 146 +++++++++++++++
 shared/net/application_layer/sntp.h        |  22 +++
 shared/net/application_layer/sntp_daemon.c |  48 +++++
 shared/net/application_layer/sntp_daemon.h |  17 ++
 shared/net/link_layer/arp.c                |   2 +-
 15 files changed, 734 insertions(+), 102 deletions(-)
 create mode 100644 shared/net/application_layer/dns.c
 create mode 100644 shared/net/application_layer/dns.h
 create mode 100644 shared/net/application_layer/dns_daemon.c
 create mode 100644 shared/net/application_layer/dns_daemon.h
 create mode 100644 shared/net/application_layer/sntp.c
 create mode 100644 shared/net/application_layer/sntp.h
 create mode 100644 shared/net/application_layer/sntp_daemon.c
 create mode 100644 shared/net/application_layer/sntp_daemon.h

diff --git a/kernel/exceptions/timer.c b/kernel/exceptions/timer.c
index 2f3f0384..5cb4edb7 100644
--- a/kernel/exceptions/timer.c
+++ b/kernel/exceptions/timer.c
@@ -2,14 +2,24 @@
 
 static uint64_t _msecs;
 
+static int64_t g_wall_offset_us = 0;
+static int g_sync = 0;
+
+static int32_t g_tz_offset_min = 0;
+
+static inline uint64_t rd_cntfrq_el0(void) {
+    uint64_t v;
+    asm volatile ("mrs %0, cntfrq_el0" : "=r"(v));
+    return v;
+}
+
 void timer_reset() {
-    uint64_t freq;
-    asm volatile ("mrs %0, cntfrq_el0" : "=r"(freq));
-    uint64_t interval = (freq * _msecs)/1000;
+    uint64_t freq = rd_cntfrq_el0();
+    uint64_t interval = (freq * _msecs) / 1000;
     asm volatile ("msr cntp_tval_el0, %0" :: "r"(interval));
 }
 
-void timer_enable() {
+static inline void timer_enable() {
     uint64_t val = 1;
     asm volatile ("msr cntp_ctl_el0, %0" :: "r"(val));
     asm volatile ("msr cntkctl_el1, %0" :: "r"(val));
@@ -27,9 +37,8 @@ void timer_init(uint64_t msecs) {
 }
 
 void virtual_timer_reset(uint64_t smsecs) {
-    uint64_t freq;
-    asm volatile ("mrs %0, cntfrq_el0" : "=r"(freq));
-    uint64_t interval = (freq * smsecs)/1000;
+    uint64_t freq = rd_cntfrq_el0();
+    uint64_t interval = (freq * smsecs) / 1000;
     asm volatile ("msr cntv_tval_el0, %0" :: "r"(interval));
 }
 
@@ -40,9 +49,8 @@ void virtual_timer_enable() {
 
 uint64_t virtual_timer_remaining_msec() {
     uint64_t ticks;
-    uint64_t freq;
+    uint64_t freq = rd_cntfrq_el0();
     asm volatile ("mrs %0, cntv_tval_el0" : "=r"(ticks));
-    asm volatile ("mrs %0, cntfrq_el0" : "=r"(freq));
     return (ticks * 1000) / freq;
 }
 
@@ -53,8 +61,171 @@ uint64_t timer_now() {
 }
 
 uint64_t timer_now_msec() {
-    uint64_t ticks, freq;
-    asm volatile ("mrs %0, cntvct_el0" : "=r"(ticks));
-    asm volatile ("mrs %0, cntfrq_el0" : "=r"(freq));
+    uint64_t ticks = timer_now();
+    uint64_t freq = rd_cntfrq_el0();
     return (ticks * 1000) / freq;
-}
\ No newline at end of file
+}
+
+uint64_t timer_now_usec(void) {
+    uint64_t ticks = timer_now();
+    uint64_t freq = rd_cntfrq_el0();
+
+    uint64_t q = ticks / freq;
+    uint64_t r = ticks % freq;
+
+    uint64_t us = q * 1000000ULL;
+    us += (r * 1000000ULL) / freq;
+    return us;
+}
+
+void timer_apply_sntp_sample_us(uint64_t server_unix_us) {
+    int64_t mono_us = (int64_t)timer_now_usec();
+    int64_t off = (int64_t)server_unix_us - mono_us;
+
+    g_wall_offset_us = off;
+    g_sync = 1;
+}
+
+int timer_is_synchronised(void) {
+    return g_sync;
+}
+
+uint64_t timer_unix_time_ms(void) {
+    if (!g_sync) return 0;
+    uint64_t now_us = timer_now_usec();
+    int64_t off = g_wall_offset_us;
+
+    int64_t unix_us = (int64_t)now_us + off;
+    if (unix_us < 0) return 0;
+    return (uint64_t)unix_us / 1000ULL;
+}
+
+void timer_set_timezone_minutes(int32_t minutes){
+    g_tz_offset_min = minutes;
+}
+
+int32_t timer_get_timezone_minutes(void){
+    return g_tz_offset_min;
+}
+
+uint64_t timer_local_time_ms(void){
+    uint64_t utc_ms = timer_unix_time_ms();
+    if (utc_ms == 0) return 0;
+    int64_t adj = (int64_t)utc_ms + (int64_t)g_tz_offset_min * 60LL * 1000LL;
+    if (adj < 0) return 0;
+    return (uint64_t)adj;
+}
+
+int timer_set_manual_unix_time_ms(uint64_t unix_ms){
+    if (g_sync) return -1;
+    uint64_t now_us = timer_now_usec();
+    int64_t off = (int64_t)(unix_ms * 1000ULL) - (int64_t)now_us;
+    g_wall_offset_us = off;
+    return 0;
+}
+
+static int64_t days_from_civil(int64_t y, unsigned m, unsigned d){
+    y -= (m <= 2);
+    const int64_t era = (y >= 0 ? y : y - 399) / 400;
+    const unsigned yoe = (unsigned)(y - era * 400);
+    const unsigned doy = (153*(m + (m > 2 ? -3 : 9)) + 2)/5 + d - 1;
+    const unsigned doe = yoe * 365 + yoe/4 - yoe/100 + yoe/400 + doy;
+    return era * 146097 + (int64_t)doe - 719468;
+}
+
+static void civil_from_days(int64_t z, int64_t* y, unsigned* m, unsigned* d){
+    z += 719468;
+    const int64_t era = (z >= 0 ? z : z - 146096) / 146097;
+    const unsigned doe = (unsigned)(z - era * 146097);
+    const unsigned yoe = (doe - doe/1460 + doe/36524 - doe/146096) / 365;
+    int64_t y_full = (int64_t)yoe + era * 400;
+    const unsigned doy = doe - (365*yoe + yoe/4 - yoe/100 + yoe/400);
+    const unsigned mp = (5*doy + 2)/153;
+    const unsigned dd = doy - (153*mp + 2)/5 + 1;
+    const unsigned mm = mp + (mp < 10 ? 3 : -9);
+    y_full += (mm <= 2);
+    *y = y_full; *m = mm; *d = dd;
+}
+
+static void fmt2u(uint64_t v, char out[3]){ //maybe move this in a helper file
+    out[0] = (char)('0' + (v/10u)%10u);
+    out[1] = (char)('0' + (v%10u));
+    out[2] = '\0';
+}
+
+void timer_unix_ms_to_datetime(uint64_t unix_ms, int use_local, DateTime* out){
+    if (!out) return;
+    int64_t ms = (int64_t)unix_ms;
+    if (use_local) ms += (int64_t)g_tz_offset_min * 60LL * 1000LL;
+    if (ms < 0) ms = 0;
+
+    uint64_t sec = (uint64_t)ms / 1000ULL;
+    uint64_t sod = sec % 86400ULL;
+    uint64_t days= sec / 86400ULL;
+
+    int64_t Y;
+    unsigned M,D;
+    civil_from_days((int64_t)days, &Y, &M, &D);
+
+    out->year = (uint16_t)Y;
+    out->month = (uint8_t)M;
+    out->day = (uint8_t)D;
+    out->hour = (uint8_t)(sod / 3600ULL);
+    out->minute = (uint8_t)((sod % 3600ULL) / 60ULL);
+    out->second = (uint8_t)(sod % 60ULL);
+}
+
+uint64_t timer_datetime_to_unix_ms(const DateTime* dt, int is_local){
+    if (!dt) return 0;
+    uint16_t Y = dt->year;
+    if (Y < 1970) Y = 1970;
+    unsigned M = (dt->month >= 1 && dt->month <= 12) ? dt->month : 1;
+    unsigned D = (dt->day >= 1 && dt->day <= 31) ? dt->day : 1;
+    unsigned h = (dt->hour <= 23) ? dt->hour : 0;
+    unsigned m = (dt->minute <= 59) ? dt->minute : 0;
+    unsigned s = (dt->second <= 59) ? dt->second : 0;
+
+    int64_t days = days_from_civil((int64_t)Y, M, D);
+    uint64_t sec = (uint64_t)(days >= 0 ? days : 0) * 86400ULL + (uint64_t)h*3600ULL + (uint64_t)m*60ULL + (uint64_t)s;
+
+    int64_t ms = (int64_t)sec * 1000LL;
+    if (is_local) ms -= (int64_t)g_tz_offset_min * 60LL * 1000LL;
+    if (ms < 0) ms = 0;
+    return (uint64_t)ms;
+}
+
+int timer_now_datetime(DateTime* out, int use_local){
+    if (!out) return 0;
+    uint64_t ms = use_local ? timer_local_time_ms() : timer_unix_time_ms();
+    if (ms == 0) return 0;
+    timer_unix_ms_to_datetime(ms, 0, out);
+    return 1;
+}
+
+void timer_datetime_to_string(const DateTime* dt, char* buf, uint32_t buflen){
+    if (!dt || !buf || buflen < 20) return;
+    uint16_t Y = dt->year;
+    buf[0] = (char)('0' + (Y/1000)%10);
+    buf[1] = (char)('0' + (Y/100)%10);
+    buf[2] = (char)('0' + (Y/10)%10);
+    buf[3] = (char)('0' + (Y%10));
+    buf[4] = '-';
+
+    char mm[3], dd[3], HH[3], MM[3], SS[3];
+    fmt2u(dt->month, mm);
+    fmt2u(dt->day, dd);
+    fmt2u(dt->hour, HH);
+    fmt2u(dt->minute, MM);
+    fmt2u(dt->second, SS);
+
+    buf[5] = mm[0]; buf[6] = mm[1];
+    buf[7] = '-';
+    buf[8] = dd[0]; buf[9] = dd[1];
+    buf[10] = ' ';
+    buf[11] = HH[0]; buf[12] = HH[1];
+    buf[13] = ':';
+    buf[14] = MM[0]; buf[15] = MM[1];
+    buf[16] = ':';
+    buf[17] = SS[0]; buf[18] = SS[1];
+    buf[19] = '\0';
+}
diff --git a/kernel/exceptions/timer.h b/kernel/exceptions/timer.h
index eb3a1414..f73cc1b7 100644
--- a/kernel/exceptions/timer.h
+++ b/kernel/exceptions/timer.h
@@ -2,6 +2,10 @@
 
 #include "types.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void timer_init(uint64_t msecs);
 void timer_reset();
 
@@ -11,5 +15,34 @@ uint64_t virtual_timer_remaining_msec();
 
 uint64_t timer_now();
 uint64_t timer_now_msec();
+uint64_t timer_now_usec(void);
+
+void timer_apply_sntp_sample_us(uint64_t server_unix_us);
+int timer_is_synchronised(void);
+uint64_t timer_unix_time_ms(void);
+
+void timer_set_timezone_minutes(int32_t minutes);
+int32_t timer_get_timezone_minutes(void);
+
+uint64_t timer_local_time_ms(void);
+int timer_set_manual_unix_time_ms(uint64_t unix_ms);
+
+typedef struct {
+    uint16_t year;
+    uint8_t month;
+    uint8_t day;
+    uint8_t hour;
+    uint8_t minute;
+    uint8_t second;
+} DateTime;
+
+void timer_unix_ms_to_datetime(uint64_t unix_ms, int use_local, DateTime* out);
+uint64_t timer_datetime_to_unix_ms(const DateTime* dt, int is_local);
+int timer_now_datetime(DateTime* out, int use_local);
+void timer_datetime_to_string(const DateTime* dt, char* buf, uint32_t buflen);
+
+void permanent_disable_timer();
 
-void permanent_disable_timer();
\ No newline at end of file
+#ifdef __cplusplus
+}
+#endif
diff --git a/kernel/networking/network_dispatch.cpp b/kernel/networking/network_dispatch.cpp
index 901b23e6..c52d2ee8 100644
--- a/kernel/networking/network_dispatch.cpp
+++ b/kernel/networking/network_dispatch.cpp
@@ -81,6 +81,7 @@ bool NetworkDispatch::enqueue_frame(const sizedptr &frame)
 
 void NetworkDispatch::net_task()
 {
+    network_net_set_pid(get_current_proc_pid());
     for (;;) {
         bool did_work = false;
         sizedptr pkt;
diff --git a/kernel/networking/processes/net_proc.c b/kernel/networking/processes/net_proc.c
index 8ce94e60..49f4840d 100644
--- a/kernel/networking/processes/net_proc.c
+++ b/kernel/networking/processes/net_proc.c
@@ -12,14 +12,16 @@
 #include "net/network_types.h"
 #include "net/link_layer/arp.h"
 #include "networking/network.h"
-#include "net/net.h"
+#include "net/application_layer/dns_daemon.h"
+#include "net/application_layer/dns.h"
+#include "net/application_layer/sntp_daemon.h"
+#include "exceptions/timer.h"
 
 extern uintptr_t malloc(uint64_t size);
-extern void      free(void *ptr, uint64_t size);
-extern void      sleep(uint64_t ms);
+extern void free(void *ptr, uint64_t size);
+extern void sleep(uint64_t ms);
 
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while (0)
+#define KP(fmt, ...) do { kprintf(fmt, ##__VA_ARGS__); } while (0)
 
 static uint32_t pick_probe_ip() {
     const net_cfg_t *cfg = ipv4_get_cfg();
@@ -33,11 +35,7 @@ static uint32_t pick_probe_ip() {
     return ipv4_first_host(cfg->ip, cfg->mask);
 }
 
-static int udp_probe_server(uint32_t probe_ip,
-                            uint16_t probe_port,
-                            net_l2l3_endpoint *out_l2,
-                            net_l4_endpoint   *out_l4)
-{
+static int udp_probe_server(uint32_t probe_ip, uint16_t probe_port, net_l2l3_endpoint *out_l2, net_l4_endpoint *out_l4) {
     const net_l2l3_endpoint *local = network_get_local_endpoint();
     if (!local)
         return 0;
@@ -56,16 +54,12 @@ static int udp_probe_server(uint32_t probe_ip,
     uint32_t waited = 0;
     const uint32_t TIMEOUT_MS = 1000;
     const uint32_t INTERVAL_MS = 50;
-    int64_t  recvd = 0;
+    int64_t recvd = 0;
     uint32_t resp_ip = 0;
     uint16_t resp_port = 0;
 
     while (waited < TIMEOUT_MS) {
-        recvd = socket_recvfrom_udp(sock,
-                                    recv_buf,
-                                    sizeof(recv_buf),
-                                    &resp_ip,
-                                    &resp_port);
+        recvd = socket_recvfrom_udp(sock, recv_buf, sizeof(recv_buf), &resp_ip, &resp_port);
         if (recvd > 0)
             break;
         sleep(INTERVAL_MS);
@@ -89,9 +83,7 @@ static int udp_probe_server(uint32_t probe_ip,
     return resp_ip;
 }
 
-
-void free_request(HTTPRequestMsg *req)
-{
+void free_request(HTTPRequestMsg *req) {
     if (req->path.mem_length)
         free(req->path.data, req->path.mem_length);
 
@@ -110,8 +102,7 @@ void free_request(HTTPRequestMsg *req)
         free((void*)req->body.ptr, req->body.size);
 }
 
-void http_server_hello_entry()
-{
+void run_http_server() {
     uint16_t pid = get_current_proc_pid();
     http_server_handle_t srv = http_server_create(pid);
     if (!srv) {
@@ -132,7 +123,7 @@ void http_server_hello_entry()
         return;
     }
 
-    KP("[HTTP] listening at %i.%i.%i.%i on port 80", FORMAT_IP(ipv4_get_cfg()->ip));
+    KP("[HTTP] listening on port 80");
 
     static const char HTML_ROOT[] =
         "<h1>Hello, world!</h1>\n"
@@ -141,7 +132,7 @@ void http_server_hello_entry()
     static const char HTML_404[] =
         "<h1>404 Regrettably, no such page exists in this realm</h1>\n"
         "<p>Im rather inclined to deduce that your page simply does not exist. Given the state of affairs, I dare say it's not altogether surprising, innit?</p>";
-        //comically british 404 error page
+
     const string STR_OK = string_from_const("OK");
     const string STR_HTML = string_from_const("text/html");
     const string STR_CLOSE = string_from_const("close");
@@ -156,9 +147,7 @@ void http_server_hello_entry()
 
         if (req.path.length) {
             char tmp[128] = {0};
-            uint32_t n = req.path.length < sizeof(tmp) - 1
-                        ? req.path.length
-                        : sizeof(tmp) - 1;
+            uint32_t n = req.path.length < sizeof(tmp) - 1 ? req.path.length : sizeof(tmp) - 1;
             memcpy(tmp, req.path.data, n);
             KP("[HTTP] GET %s", tmp);
         }
@@ -173,8 +162,7 @@ void http_server_hello_entry()
             res.headers_common.connection = STR_CLOSE;
             res.body.ptr = (uintptr_t)HTML_ROOT;
             res.body.size = sizeof(HTML_ROOT) - 1;
-        }
-        else {
+        } else {
             res.status_code = HTTP_NOT_FOUND;
             res.reason = STR_NOTFOUND;
             res.headers_common.length = sizeof(HTML_404) - 1;
@@ -190,15 +178,8 @@ void http_server_hello_entry()
     }
 }
 
-
-
-static void test_http(uint32_t ip)
-{
-    KP("[HTTP] GET %i.%i.%i.%i:80\n",
-       (ip >> 24) & 0xFF,
-       (ip >> 16) & 0xFF,
-       (ip >>  8) & 0xFF,
-       (ip ) & 0xFF);
+static void test_http(uint32_t ip) {
+    KP("[HTTP] GET %i.%i.%i.%i:80\n", (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, (ip >> 8) & 0xFF, ip & 0xFF);
 
     uint16_t pid = get_current_proc_pid();
     http_client_handle_t cli = http_client_create(pid);
@@ -224,18 +205,17 @@ static void test_http(uint32_t ip)
         if (body_str) {
             memcpy(body_str, (void*)resp.body.ptr, resp.body.size);
             body_str[resp.body.size] = '\0';
-            KP("[HTTP] %i %i bytes of body%s\n",
-               (uint64_t)resp.status_code,
-               (uint64_t)resp.body.size,
-               body_str);
+            KP("[HTTP] %i %i bytes of body%s\n", (uint64_t)resp.status_code, (uint64_t)resp.body.size, body_str);
             free(body_str, resp.body.size + 1);
         }
     }
 
     http_client_close(cli);
     http_client_destroy(cli);
+
     if (resp.reason.data && resp.reason.mem_length)
         free(resp.reason.data, resp.reason.mem_length);
+
     for (uint32_t i = 0; i < resp.extra_header_count; i++) {
         HTTPHeader *h = &resp.extra_headers[i];
         if (h->key.mem_length)
@@ -243,51 +223,88 @@ static void test_http(uint32_t ip)
         if (h->value.mem_length)
             free(h->value.data, h->value.mem_length);
     }
+
     if (resp.extra_headers)
-        free(resp.extra_headers,
-             resp.extra_header_count * sizeof(HTTPHeader));
+        free(resp.extra_headers, resp.extra_header_count * sizeof(HTTPHeader));
 }
 
-void test_network()
-{
+void print_info() {
+    if (!sntp_is_running()) {
+        create_kernel_process("sntpd", sntp_daemon_entry);
+        while (!timer_is_synchronised());
+
+        const net_cfg_t *cfg = ipv4_get_cfg();
+        if (cfg && cfg->mode != NET_MODE_DISABLED && cfg->ip != 0) {
+            KP("[NET] IP: %i.%i.%i.%i MASK: %i.%i.%i.%i GW: %i.%i.%i.%i",
+                (cfg->ip >> 24) & 0xFF, (cfg->ip >> 16) & 0xFF,
+                (cfg->ip >> 8) & 0xFF, cfg->ip & 0xFF,
+                (cfg->mask >> 24) & 0xFF, (cfg->mask >> 16) & 0xFF,
+                (cfg->mask >> 8) & 0xFF, cfg->mask & 0xFF,
+                (cfg->gw >> 24) & 0xFF, (cfg->gw >> 16) & 0xFF,
+                (cfg->gw >> 8) & 0xFF, cfg->gw & 0xFF);
+            }
+
+        KP("[NET] PIDs -- NET: %i ARP: %i DHCP: %i DNS: %i SNTP: %i",
+        network_net_get_pid(),
+        arp_get_pid(),
+        dhcp_get_pid(),
+        dns_get_pid(),
+        sntp_get_pid());
+
+        timer_set_timezone_minutes(120);
+        KP("[TIME]timezone offset %i minutes", (int32_t)timer_get_timezone_minutes());
+
+        DateTime now_dt_utc, now_dt_loc;
+        if (timer_now_datetime(&now_dt_utc, 0)) {
+            char s[20];
+            timer_datetime_to_string(&now_dt_utc, s, sizeof s);
+            KP("[TIME] UTC: %s", s);
+        }
+        if (timer_now_datetime(&now_dt_loc, 1)) {
+            char s[20];
+            timer_datetime_to_string(&now_dt_loc, s, sizeof s);
+            KP("[TIME] LOCAL: %s (TZ %i min)", s, (int32_t)timer_get_timezone_minutes());
+        }
+        uint32_t ip;
+        char domain[] = "home.leox.me";
+        dns_result_t r = dns_resolve_a(domain, &ip, DNS_USE_BOTH, 3000);
+        KP("[DNS] domain %s translated in %i.%i.%i.%i, status %i", domain, (ip>>24)&0xFF, (ip>>16)&0xFF, (ip>>8)&0xFF, (ip&0xFF), (int)r);
+    }
+}
+
+void test_net() {
     const net_cfg_t *cfg = ipv4_get_cfg();
     net_l2l3_endpoint l2 = {0};
     net_l4_endpoint srv = {0};
 
     if (cfg && cfg->mode != NET_MODE_DISABLED && cfg->ip != 0) {
+        print_info();
+
         uint32_t bcast = ipv4_broadcast(cfg->ip, cfg->mask);
-        KP("[NET] probing broadcast %i.%i.%i.%i",
-           (bcast>>24)&0xFF,(bcast>>16)&0xFF,
-           (bcast>>8)&0xFF,(bcast&0xFF));
+        KP("[NET] probing broadcast %i.%i.%i.%i", (bcast>>24)&0xFF, (bcast>>16)&0xFF, (bcast>>8)&0xFF, (bcast&0xFF));
 
-        if (udp_probe_server(bcast, 8080, &l2, &srv)) {
+        if (udp_probe_server(bcast, 8080, &l2, &srv))
             test_http(srv.ip);
-        }
-        http_server_hello_entry();
+
+        sleep(2000);
+        run_http_server();
         return;
     }
 
     uint32_t fallback = pick_probe_ip();
     if (!fallback)
         fallback = (192<<24)|(168<<16)|(1<<8)|255;
-    if (udp_probe_server(fallback, 8080, &l2, &srv)) {
-        test_http(srv.ip);
-    } else {
-        KP("[NET] could not find update server\n");
-    }
-}
 
-void net_test_entry(){
-    test_network();
-    stop_current_process();
+    if (udp_probe_server(fallback, 8080, &l2, &srv))
+        test_http(srv.ip);
+    else KP("[NET] could not find update server\n");
 }
 
-void ip_waiter_entry()
-{
+void ip_waiter_entry() {
     for (;;) {
         const net_cfg_t *cfg = ipv4_get_cfg();
         if (cfg && cfg->mode != NET_MODE_DISABLED && cfg->ip != 0) {
-            create_kernel_process("net_test", net_test_entry);
+            create_kernel_process("net_test", test_net);
             break;
         }
         sleep(200);
@@ -295,23 +312,22 @@ void ip_waiter_entry()
     stop_current_process();
 }
 
-process_t* launch_net_process()
-{
+process_t* launch_net_process() {
     const net_cfg_t *cfg = ipv4_get_cfg();
 
-    process_t* net  = create_kernel_process("net_net",  network_net_task_entry);
-    network_net_set_pid(net ? net->id : 0xFFFF);
+    create_kernel_process("net_net", network_net_task_entry);
 
-    process_t* arp = create_kernel_process("arp_daemon", arp_daemon_entry);
-    arp_set_pid(arp ? arp->id : 0xFFFF);
+    create_kernel_process("arp_daemon", arp_daemon_entry);
+
+    create_kernel_process("dhcp_daemon", dhcp_daemon_entry);
+
+    create_kernel_process("dns_daemon", dns_deamon_entry);
 
     if (cfg && cfg->mode != NET_MODE_DISABLED && cfg->ip != 0) {
-        create_kernel_process("net_test", net_test_entry);
-        return NULL;
+        create_kernel_process("net_test", test_net);
+        return 0;
     }
 
-    process_t* dhcp = create_kernel_process("dhcp_daemon", dhcp_daemon_entry);
-    dhcp_set_pid(dhcp ? dhcp->id : 0xFFFF);
     create_kernel_process("ip_waiter", ip_waiter_entry);
-    return dhcp;
+    return 0;
 }
diff --git a/shared/net/application_layer/dhcp_daemon.c b/shared/net/application_layer/dhcp_daemon.c
index 9fcc99c4..430da49b 100644
--- a/shared/net/application_layer/dhcp_daemon.c
+++ b/shared/net/application_layer/dhcp_daemon.c
@@ -4,7 +4,7 @@
 #include "std/memfunctions.h"
 #include "process/scheduler.h"
 #include "math/math.h"
-#include "math/rng.h"
+#include "math/rng.h"+
 
 #include "networking/network.h"
 #include "net/application_layer/dhcp.h"
@@ -14,8 +14,6 @@
 
 #include "net/transport_layer/csocket_udp.h"
 
-#include "../net.h"
-
 extern void      sleep(uint64_t ms);
 extern uintptr_t malloc(uint64_t size);
 extern void      free(void *ptr, uint64_t size);
@@ -53,7 +51,7 @@ static uint16_t g_pid_dhcpd = 0xFFFF;
 
 static socket_handle_t g_sock = 0;
 
-uint16_t get_dhcp_pid() { return g_pid_dhcpd; }
+uint16_t dhcp_get_pid() { return g_pid_dhcpd; }
 bool dhcp_is_running() { return g_pid_dhcpd != 0xFFFF; }
 void dhcp_set_pid(uint16_t p){ g_pid_dhcpd = p;    }
 void dhcp_force_renew() { g_force_renew = true; }
@@ -248,8 +246,7 @@ static void dhcp_fsm_once()
 }
 
 void dhcp_daemon_entry(){
-    KP("[DHCP] daemon start pid=%i", get_current_proc_pid());
-    g_pid_dhcpd = (uint16_t)get_current_proc_pid();
+    dhcp_set_pid(get_current_proc_pid());
     g_sock = udp_socket_create(SOCK_ROLE_SERVER, g_pid_dhcpd);
     if(socket_bind_udp(g_sock, 68) != 0){
         KP("[DHCP] bind failed\n");
@@ -336,16 +333,12 @@ static void dhcp_apply_offer(dhcp_packet *p, dhcp_request *req, uint32_t xid) {
         uint32_t t1_net;
         memcpy(&t1_net, &p->options[idx+2], 4);
         cfg_local.rt->t1 = __builtin_bswap32(t1_net);
-    } else {
-        cfg_local.rt->t1 = cfg_local.rt->lease / 2;
     }
     idx = dhcp_parse_option(p, 59);
     if (idx != UINT16_MAX && p->options[idx+1] >= 4) {
         uint32_t t2_net;
         memcpy(&t2_net, &p->options[idx+2], 4);
         cfg_local.rt->t2 = __builtin_bswap32(t2_net);
-    } else {
-        cfg_local.rt->t2 = cfg_local.rt->t1 * 2;
     }
 
     idx = dhcp_parse_option(p, 54);
@@ -355,14 +348,17 @@ static void dhcp_apply_offer(dhcp_packet *p, dhcp_request *req, uint32_t xid) {
         cfg_local.rt->server_ip = __builtin_bswap32(srv_net);
         req->server_ip = srv_net;
     }
+
+    if (cfg_local.rt->dns[0] == 0 && cfg_local.gw != 0) {
+        cfg_local.rt->dns[0] = cfg_local.gw;
+    }
+
     uint32_t bcast = ipv4_broadcast(cfg_local.ip, cfg_local.mask);
     static const uint8_t bmac[6] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
     arp_table_put(bcast, bmac, 0, true);
 
     ipv4_set_cfg(&cfg_local);
 
-    kprintf("Local IP: %i.%i.%i.%i",FORMAT_IP(cfg_local.ip));
-
     g_t1_left_ms = cfg_local.rt->t1 * 1000;
     g_t2_left_ms = cfg_local.rt->t2 * 1000;
 }
diff --git a/shared/net/application_layer/dhcp_daemon.h b/shared/net/application_layer/dhcp_daemon.h
index fcf501dc..d211887e 100644
--- a/shared/net/application_layer/dhcp_daemon.h
+++ b/shared/net/application_layer/dhcp_daemon.h
@@ -6,7 +6,7 @@ extern "C" {
 #endif
 
 void dhcp_daemon_entry();
-uint16_t get_dhcp_pid();
+uint16_t dhcp_get_pid();
 bool dhcp_is_running();
 void dhcp_set_pid(uint16_t pid);
 
diff --git a/shared/net/application_layer/dns.c b/shared/net/application_layer/dns.c
new file mode 100644
index 00000000..f908aca3
--- /dev/null
+++ b/shared/net/application_layer/dns.c
@@ -0,0 +1,123 @@
+#include "dns.h"
+#include "std/memfunctions.h"
+#include "math/rng.h"
+#include "process/scheduler.h"
+#include "net/internet_layer/ipv4.h"
+#include "dns_daemon.h"
+
+extern void sleep(uint64_t ms);
+
+static inline uint16_t read_be16(const uint8_t* p){ uint16_t v; memcpy(&v,p,2); return __builtin_bswap16(v); }
+static inline uint32_t read_be32(const uint8_t* p){ uint32_t v; memcpy(&v,p,4); return __builtin_bswap32(v); }
+static inline void write_be16(uint8_t* p, uint16_t v){ v = __builtin_bswap16(v); memcpy(p,&v,2); }
+static inline void write_be32(uint8_t* p, uint32_t v){ v = __builtin_bswap32(v); memcpy(p,&v,4); }
+
+static uint32_t encode_dns_qname(uint8_t* dst, const char* name){
+    uint32_t index = 0;
+    uint32_t label_len = 0;
+    uint32_t label_pos = 0;
+    dst[index++] = 0;
+    while (*name) {
+        if (*name == '.') { dst[label_pos] = (uint8_t)label_len; label_len = 0; label_pos = index; dst[index++] = 0; name++; continue; }
+        dst[index++] = (uint8_t)(*name); label_len++; name++;
+    }
+    dst[label_pos] = (uint8_t)label_len;
+    dst[index++] = 0;
+    return index;
+}
+
+static uint32_t skip_dns_name(const uint8_t* message, uint32_t message_len, uint32_t offset){
+    if (offset >= message_len) return message_len + 1;
+    uint32_t cursor = offset;
+    while (cursor < message_len) {
+        uint8_t len = message[cursor++];
+        if (len == 0) break;
+        if ((len & 0xC0) == 0xC0) { if (cursor >= message_len) return message_len + 1; cursor++; break; }
+        cursor += len;
+        if (cursor > message_len) return message_len + 1;
+    }
+    return cursor;
+}
+
+static dns_result_t parse_dns_a_record(uint8_t* buffer, uint32_t buffer_len, uint16_t message_id, uint32_t* out_ip){
+    if (buffer_len < 12) return DNS_ERR_FORMAT;
+    if (read_be16(buffer+0) != message_id) return DNS_ERR_FORMAT;
+    uint16_t flags = read_be16(buffer+2);
+    uint16_t question_count = read_be16(buffer+4);
+    uint16_t answer_count = read_be16(buffer+6);
+    if ((flags & 0x000F) == 3) return DNS_ERR_NXDOMAIN;
+    uint32_t offset = 12;
+    for (uint16_t i = 0; i < question_count; ++i){
+        offset = skip_dns_name(buffer, buffer_len, offset);
+        if (offset + 4 > buffer_len) return DNS_ERR_FORMAT;
+        offset += 4;
+    }
+    for (uint16_t i = 0; i < answer_count; ++i){
+        offset = skip_dns_name(buffer, buffer_len, offset);
+        if (offset + 10 > buffer_len) return DNS_ERR_FORMAT;
+        uint16_t type = read_be16(buffer+offset+0);
+        uint16_t klass = read_be16(buffer+offset+2);
+        uint16_t rdlength = read_be16(buffer+offset+8);
+        offset += 10;
+        if (offset + rdlength > buffer_len) return DNS_ERR_FORMAT;
+        if (type == 1 && klass == 1 && rdlength == 4){
+            uint32_t ip_host = read_be32(buffer+offset);
+            *out_ip = ip_host;
+            return DNS_OK;
+        }
+        offset += rdlength;
+    }
+    return DNS_ERR_NO_ANSWER;
+}
+
+static dns_result_t perform_dns_query_once(socket_handle_t sock, uint32_t dns_ip_host, const char* name, uint32_t timeout_ms, uint32_t* out_ip){
+    uint8_t request_buffer[512]; memset(request_buffer,0,sizeof(request_buffer));
+    rng_t rng; rng_init_random(&rng);
+    uint16_t message_id = (uint16_t)(rng_next32(&rng) & 0xFFFF);
+    write_be16(request_buffer+0, message_id);
+    write_be16(request_buffer+2, 0x0100);
+    write_be16(request_buffer+4, 1);
+    uint32_t offset = 12;
+    offset += encode_dns_qname(request_buffer+offset, name);
+    write_be16(request_buffer+offset+0, 1);
+    write_be16(request_buffer+offset+2, 1);
+    offset += 4;
+    int64_t sent = socket_sendto_udp(sock, dns_ip_host, 53, request_buffer, offset);
+    if (sent < 0) return DNS_ERR_SEND;
+    uint32_t waited_ms = 0;
+    while (waited_ms < timeout_ms){
+        uint8_t response_buffer[512];
+        uint32_t source_ip; uint16_t source_port;
+        int64_t received = socket_recvfrom_udp(sock, response_buffer, sizeof(response_buffer), &source_ip, &source_port);
+        if (received > 0 && source_port == 53 && source_ip == dns_ip_host){
+            uint32_t ip_host;
+            dns_result_t pr = parse_dns_a_record(response_buffer, (uint32_t)received, message_id, &ip_host);
+            if (pr == DNS_OK){ *out_ip = ip_host; return DNS_OK; }
+            if (pr == DNS_ERR_NXDOMAIN) return pr;
+        } else {
+            sleep(50);
+            waited_ms += 50;
+        }
+    }
+    return DNS_ERR_TIMEOUT;
+}
+
+dns_result_t dns_resolve_a(const char* hostname, uint32_t* out_ip, dns_server_sel_t which, uint32_t timeout_ms){
+    const net_cfg_t* cfg = ipv4_get_cfg();
+    if (!cfg || !cfg->rt) return DNS_ERR_NO_DNS;
+    uint32_t dns_primary = cfg->rt->dns[0];
+    uint32_t dns_secondary = cfg->rt->dns[1];
+    if (which == DNS_USE_PRIMARY && dns_primary == 0) return DNS_ERR_NO_DNS;
+    if (which == DNS_USE_SECONDARY && dns_secondary == 0) return DNS_ERR_NO_DNS;
+    if (which == DNS_USE_BOTH && dns_primary == 0 && dns_secondary == 0) return DNS_ERR_NO_DNS;
+    socket_handle_t sock = dns_socket_handle();
+    if (sock == 0) return DNS_ERR_SOCKET;
+    dns_result_t res = DNS_ERR_NO_DNS;
+    if (which == DNS_USE_PRIMARY) res = perform_dns_query_once(sock, dns_primary, hostname, timeout_ms, out_ip);
+    else if (which == DNS_USE_SECONDARY) res = perform_dns_query_once(sock, dns_secondary, hostname, timeout_ms, out_ip);
+    else {
+        res = perform_dns_query_once(sock, dns_primary ? dns_primary : dns_secondary, hostname, timeout_ms, out_ip);
+        if (res != DNS_OK && dns_secondary && dns_secondary != dns_primary) res = perform_dns_query_once(sock, dns_secondary, hostname, timeout_ms, out_ip);
+    }
+    return res;
+}
diff --git a/shared/net/application_layer/dns.h b/shared/net/application_layer/dns.h
new file mode 100644
index 00000000..8d429627
--- /dev/null
+++ b/shared/net/application_layer/dns.h
@@ -0,0 +1,26 @@
+#pragma once
+#include "net/transport_layer/csocket_udp.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+typedef enum {
+    DNS_OK = 0,
+    DNS_ERR_NO_DNS = -1,
+    DNS_ERR_SOCKET = -2,
+    DNS_ERR_SEND = -3,
+    DNS_ERR_TIMEOUT = -4,
+    DNS_ERR_FORMAT = -5,
+    DNS_ERR_NXDOMAIN = -6,
+    DNS_ERR_NO_ANSWER = -7
+} dns_result_t;
+
+typedef enum {
+    DNS_USE_PRIMARY = 0,
+    DNS_USE_SECONDARY = 1,
+    DNS_USE_BOTH = 2
+} dns_server_sel_t;
+
+dns_result_t dns_resolve_a(const char* hostname, uint32_t* out_ip, dns_server_sel_t which, uint32_t timeout_ms);
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file
diff --git a/shared/net/application_layer/dns_daemon.c b/shared/net/application_layer/dns_daemon.c
new file mode 100644
index 00000000..7cfc1b8a
--- /dev/null
+++ b/shared/net/application_layer/dns_daemon.c
@@ -0,0 +1,19 @@
+#include "dns_daemon.h"
+#include "process/scheduler.h"
+#include "std/memfunctions.h"
+
+extern void sleep(uint64_t ms);
+
+static uint16_t g_pid_dnsd = 0xFFFF;
+static socket_handle_t g_sock = 0;
+
+uint16_t dns_get_pid(void){ return g_pid_dnsd; }
+bool dns_is_running(void){ return g_pid_dnsd != 0xFFFF; }
+void dns_set_pid(uint16_t p){ g_pid_dnsd = p; }
+socket_handle_t dns_socket_handle(void){ return g_sock; }
+
+void dns_deamon_entry(void){
+    dns_set_pid(get_current_proc_pid());
+    g_sock = udp_socket_create(0, g_pid_dnsd);
+    for(;;){ sleep(250); }
+}
diff --git a/shared/net/application_layer/dns_daemon.h b/shared/net/application_layer/dns_daemon.h
new file mode 100644
index 00000000..c13dcfd3
--- /dev/null
+++ b/shared/net/application_layer/dns_daemon.h
@@ -0,0 +1,14 @@
+#pragma once
+#include "net/transport_layer/csocket_udp.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    bool dns_is_running(void);
+    void dns_set_pid(uint16_t p);
+    socket_handle_t dns_socket_handle(void);
+    uint16_t dns_get_pid(void);
+    void dns_deamon_entry(void);
+#ifdef __cplusplus
+}
+#endif
diff --git a/shared/net/application_layer/sntp.c b/shared/net/application_layer/sntp.c
new file mode 100644
index 00000000..89059d50
--- /dev/null
+++ b/shared/net/application_layer/sntp.c
@@ -0,0 +1,146 @@
+#include "sntp.h"
+#include "exceptions/timer.h"
+#include "std/memfunctions.h"
+#include "net/internet_layer/ipv4.h"
+#include "net/transport_layer/csocket_udp.h"
+#include "process/scheduler.h"
+#include "console/kio.h"
+
+#define NTP_PORT 123
+#define NTP_UNIX_EPOCH_DELTA 2208988800UL
+
+extern void sleep(uint64_t ms);
+
+typedef struct __attribute__((packed)) {
+    uint8_t li_vn_mode;
+    uint8_t stratum;
+    uint8_t poll;
+    int8_t precision;
+    uint32_t rootDelay;
+    uint32_t rootDispersion;
+    uint32_t refId;
+    uint64_t refTs;
+    uint64_t origTs;
+    uint64_t recvTs;
+    uint64_t txTs;
+} ntp_packet_t;
+
+static inline uint16_t be16(uint16_t v){ return __builtin_bswap16(v); }
+static inline uint32_t be32(uint32_t v){ return __builtin_bswap32(v); }
+static inline uint64_t be64(uint64_t v){ return __builtin_bswap64(v); }
+
+static uint64_t unix_us_to_ntp64_be(uint64_t unix_us){
+    uint64_t sec = unix_us / 1000000ULL;
+    uint64_t frac = ((unix_us % 1000000ULL) << 32) / 1000000ULL;
+    sec += NTP_UNIX_EPOCH_DELTA;
+    uint64_t ntp = (sec << 32) | (frac & 0xffffffffULL);
+    return be64(ntp);
+}
+
+static uint64_t ntp64_be_to_unix_us(uint64_t ntp_be){
+    uint64_t ntp = be64(ntp_be);
+    uint64_t sec = ntp >> 32;
+    uint64_t frac = ntp & 0xffffffffULL;
+    if (sec < NTP_UNIX_EPOCH_DELTA) return 0;
+    sec -= NTP_UNIX_EPOCH_DELTA;
+    return sec * 1000000ULL + ((frac * 1000000ULL) >> 32);
+}
+
+static sntp_result_t sntp_send_query(socket_handle_t sock, uint32_t server_ip_host, uint64_t* t1_us_out){
+    ntp_packet_t p;
+    memset(&p, 0, sizeof(p));
+    p.li_vn_mode = (0u<<6) | (4u<<3) | 3u;
+
+    uint64_t t1_us = timer_now_usec();
+    p.txTs = unix_us_to_ntp64_be(t1_us);
+
+    int64_t sent = socket_sendto_udp(sock, server_ip_host, NTP_PORT, &p, sizeof(p));
+    if (sent < 0) return SNTP_ERR_SEND;
+    *t1_us_out = t1_us;
+    return SNTP_OK;
+}
+
+sntp_result_t sntp_poll_once(uint32_t timeout_ms){
+    const net_cfg_t* cfg = ipv4_get_cfg();
+    if (!cfg || !cfg->rt) return SNTP_ERR_NO_CFG;
+
+    uint32_t s0 = cfg->rt->ntp[0];
+    uint32_t s1 = cfg->rt->ntp[1];
+    if (s0 == 0 && s1 == 0) return SNTP_ERR_NO_SERVER;
+
+    socket_handle_t sock = udp_socket_create(0, (uint32_t)get_current_proc_pid());
+    if (sock == 0) return SNTP_ERR_SOCKET;
+
+    uint64_t t1_0 = 0, t1_1 = 0;
+    bool sent0=false, sent1=false;
+    if (s0) sent0 = (sntp_send_query(sock, s0, &t1_0) == SNTP_OK);
+    if (s1 && s1 != s0) sent1 = (sntp_send_query(sock, s1, &t1_1) == SNTP_OK);
+
+    uint32_t waited = 0;
+    uint64_t best_server_unix_us = 0;
+    uint64_t best_rtt_us = (uint64_t)-1;
+
+    while (waited < timeout_ms){
+        uint8_t buf[96];
+        uint32_t rip; uint16_t rport;
+        int64_t n = socket_recvfrom_udp(sock, buf, sizeof(buf), &rip, &rport);
+
+        if (n >= (int64_t)sizeof(ntp_packet_t) && rport == NTP_PORT && (rip == s0 || rip == s1)){
+            ntp_packet_t* r = (ntp_packet_t*)buf;
+            uint64_t t4_us = timer_now_usec();
+
+            uint64_t T1 = ntp64_be_to_unix_us(r->origTs);
+            uint64_t T2 = ntp64_be_to_unix_us(r->recvTs);
+            uint64_t T3 = ntp64_be_to_unix_us(r->txTs);
+
+            if (T1 != 0 && T3 != 0) {
+                uint64_t t1_us = (rip == s0) ? t1_0 : t1_1;
+                uint64_t d = (T1 > t1_us) ? (T1 - t1_us) : (t1_us - T1);
+                if (t1_us != 0 && d <= 1000000ULL) {
+                    int64_t rtt = (int64_t)(t4_us - t1_us) - (int64_t)(T3 - T2);
+                    if (rtt < 0) rtt = 0;
+                    int64_t off = ((int64_t)(T2 - t1_us) + (int64_t)(T3 - t4_us)) / 2;
+
+                    uint64_t server_unix_us = (uint64_t)((int64_t)t4_us + off);
+
+                    const uint64_t year2000 = 946684800ULL * 1000000ULL;
+                    bool ok_range = false;
+
+                    if (timer_is_synchronised()) {
+                        uint64_t now_wall_ms = timer_unix_time_ms();
+                        uint64_t now_wall_us = now_wall_ms ? (now_wall_ms * 1000ULL) : 0;
+                        const uint64_t plus1d = 86400ULL * 1000000ULL;
+                        ok_range = (server_unix_us >= year2000) &&(now_wall_us == 0||server_unix_us <= now_wall_us + plus1d);
+                    } else {
+                        ok_range = (server_unix_us >= year2000);
+                    }
+
+                    if (ok_range) {
+
+
+                        if ((uint64_t)rtt < best_rtt_us){
+                            best_rtt_us = (uint64_t)rtt;
+                            best_server_unix_us = server_unix_us;
+                        }
+                    }
+                }
+            }
+        } else {
+            sleep(50);
+            waited += 50;
+        }
+
+        if (best_server_unix_us != 0 && waited >= (timeout_ms / 2)) break;
+    }
+
+    socket_destroy_udp(sock);
+
+    if (best_server_unix_us == 0) return SNTP_ERR_TIMEOUT;
+
+    uint64_t sec = best_server_unix_us / 1000000ULL;
+    uint64_t frac = ((best_server_unix_us % 1000000ULL) << 32) / 1000000ULL;
+    uint64_t ntp64 = ((sec + NTP_UNIX_EPOCH_DELTA) << 32) | frac;
+
+    timer_apply_sntp_sample_us(best_server_unix_us);
+    return SNTP_OK;
+}
diff --git a/shared/net/application_layer/sntp.h b/shared/net/application_layer/sntp.h
new file mode 100644
index 00000000..16701a38
--- /dev/null
+++ b/shared/net/application_layer/sntp.h
@@ -0,0 +1,22 @@
+#pragma once
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    SNTP_OK = 0,
+    SNTP_ERR_NO_CFG,
+    SNTP_ERR_NO_SERVER,
+    SNTP_ERR_SOCKET,
+    SNTP_ERR_SEND,
+    SNTP_ERR_TIMEOUT,
+    SNTP_ERR_FORMAT
+} sntp_result_t;
+
+sntp_result_t sntp_poll_once(uint32_t timeout_ms);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/shared/net/application_layer/sntp_daemon.c b/shared/net/application_layer/sntp_daemon.c
new file mode 100644
index 00000000..08a1fdfb
--- /dev/null
+++ b/shared/net/application_layer/sntp_daemon.c
@@ -0,0 +1,48 @@
+#include "sntp_daemon.h"
+#include "sntp.h"
+#include "exceptions/timer.h"
+#include "process/scheduler.h"
+#include "net/internet_layer/ipv4.h"
+#include "process/scheduler.h"
+
+extern void sleep(uint64_t ms);
+
+static uint16_t g_pid_sntp = 0xFFFF;
+static socket_handle_t g_sock = 0;
+
+uint16_t sntp_get_pid(void){ return g_pid_sntp; }
+bool sntp_is_running(void){ return g_pid_sntp != 0xFFFF; }
+void sntp_set_pid(uint16_t p){ g_pid_sntp = p; }
+socket_handle_t sntp_socket_handle(void){ return g_sock; }
+
+#define SNTP_POLL_INTERVAL_MS (10u * 60u * 1000u)
+#define SNTP_QUERY_TIMEOUT_MS 1200u
+#define SNTP_BOOTSTRAP_MAX_RETRY 5u
+
+void sntp_daemon_entry(void){
+    g_pid_sntp = (uint16_t)get_current_proc_pid();
+    g_sock = udp_socket_create(0, g_pid_sntp);
+    sntp_set_pid(get_current_proc_pid());
+    uint32_t attempts = 0;
+    while (attempts < SNTP_BOOTSTRAP_MAX_RETRY){
+        const net_cfg_t* cfg = ipv4_get_cfg();
+        if (!cfg || cfg->mode == NET_MODE_DISABLED || cfg->ip == 0){
+            sleep(500);
+            continue;
+        }
+
+        sntp_result_t r = sntp_poll_once(SNTP_QUERY_TIMEOUT_MS);
+        if (r == SNTP_OK){
+            break;
+        }
+        attempts++;
+        uint32_t backoff_ms = (1u << (attempts <= 4 ? attempts : 4)) * 250u;
+        uint32_t jitter = backoff_ms / 10u;
+        sleep(backoff_ms + (jitter / 2u));
+    }
+
+    for(;;){
+        sntp_poll_once(SNTP_QUERY_TIMEOUT_MS);
+        sleep(SNTP_POLL_INTERVAL_MS);
+    }
+}
diff --git a/shared/net/application_layer/sntp_daemon.h b/shared/net/application_layer/sntp_daemon.h
new file mode 100644
index 00000000..0b6d1188
--- /dev/null
+++ b/shared/net/application_layer/sntp_daemon.h
@@ -0,0 +1,17 @@
+#pragma once
+#include "types.h"
+#include "net/transport_layer/csocket_udp.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint16_t sntp_get_pid(void);
+bool sntp_is_running(void);
+void sntp_set_pid(uint16_t p);
+socket_handle_t sntp_socket_handle(void);
+void sntp_daemon_entry(void);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/shared/net/link_layer/arp.c b/shared/net/link_layer/arp.c
index 18eac6db..9d92aab1 100644
--- a/shared/net/link_layer/arp.c
+++ b/shared/net/link_layer/arp.c
@@ -27,7 +27,6 @@ void arp_set_pid(uint16_t pid) { g_arp_pid = pid; }
 uint16_t arp_get_pid() { return g_arp_pid; }
 
 void arp_table_init() {
-    KP("[ARP] init");
     memset(g_arp_table, 0, sizeof(g_arp_table));
     init = true;
     arp_table_init_static_defaults();
@@ -154,6 +153,7 @@ bool arp_can_reply() {
 }
 
 void arp_daemon_entry() {
+    arp_set_pid(get_current_proc_pid());
     while (1){
         const net_cfg_t *cfg = ipv4_get_cfg();
         if(cfg && cfg->ip != 0 && cfg->mode != NET_MODE_DISABLED) break;

From 7f366c0625a5f81249f8193c0d8d7370eac39a7f Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 13:52:01 +0200
Subject: [PATCH 2/6] minor fixes

---
 kernel/networking/network_dispatch.cpp        | 17 +----
 kernel/networking/port_manager.c              | 27 +++++--
 kernel/networking/processes/net_proc.c        | 50 ++++++-------
 shared/net/application_layer/dhcp.c           |  7 +-
 shared/net/application_layer/dhcp_daemon.c    | 22 +++---
 shared/net/application_layer/dns.c            | 32 ++++-----
 shared/net/application_layer/sntp.c           |  5 +-
 .../application_layer/socket_http_client.hpp  |  2 -
 .../application_layer/socket_http_server.hpp  |  3 -
 shared/net/internet_layer/icmp.c              |  6 +-
 shared/net/internet_layer/ipv4.c              | 35 +++++++--
 shared/net/internet_layer/ipv4.h              |  2 +-
 shared/net/link_layer/arp.c                   |  9 ---
 shared/net/transport_layer/socket_tcp.hpp     |  5 +-
 shared/net/transport_layer/tcp.c              | 71 +++++++++++--------
 shared/net/transport_layer/tcp.h              |  2 +-
 shared/net/transport_layer/udp.c              |  2 -
 shared/types.h                                | 32 +++++++++
 18 files changed, 179 insertions(+), 150 deletions(-)

diff --git a/kernel/networking/network_dispatch.cpp b/kernel/networking/network_dispatch.cpp
index c52d2ee8..0c0eb672 100644
--- a/kernel/networking/network_dispatch.cpp
+++ b/kernel/networking/network_dispatch.cpp
@@ -84,7 +84,7 @@ void NetworkDispatch::net_task()
     network_net_set_pid(get_current_proc_pid());
     for (;;) {
         bool did_work = false;
-        sizedptr pkt;
+        sizedptr pkt{0,0};
 
         //rx
         if (!rx_queue.is_empty() && rx_queue.dequeue(pkt)) {
@@ -128,21 +128,6 @@ bool NetworkDispatch::dequeue_packet_for(uint16_t pid, sizedptr *out)
     return true;
 }
 
-static sizedptr make_user_copy(const sizedptr &src)
-{
-    sizedptr out{0, 0};
-    uintptr_t mem = malloc(src.size);
-    if (!mem) return out;
-
-    memcpy(reinterpret_cast<void*>(mem),
-           reinterpret_cast<const void*>(src.ptr),
-           src.size);
-
-    out.ptr  = mem;
-    out.size = src.size;
-    return out;
-}
-
 sizedptr NetworkDispatch::make_copy(const sizedptr &in)
 {
     sizedptr out{0, 0};
diff --git a/kernel/networking/port_manager.c b/kernel/networking/port_manager.c
index 51ededb7..4fbd746d 100644
--- a/kernel/networking/port_manager.c
+++ b/kernel/networking/port_manager.c
@@ -2,18 +2,20 @@
 #include "types.h"
 #include "networking/port_manager.h"
 #include "net/internet_layer/ipv4.h"
+#include "math/rng.h"
 
 static port_entry_t g_port_table[PROTO_COUNT][MAX_PORTS];//tab proto/port
 
-static inline bool port_valid(uint16_t p) {
+static inline bool port_valid(uint32_t p) {
     return p > 0 && p < MAX_PORTS;
 }
+
 static inline bool proto_valid(protocol_t proto) {
-    return (uint32_t)proto< PROTO_COUNT;
+    return (uint32_t)proto < PROTO_COUNT;
 }
 
-void port_manager_init() {
-    for (int pr = 0; pr < PROTO_COUNT; ++pr) {
+void port_manager_init(void) {
+    for (uint32_t pr = 0; pr < PROTO_COUNT; ++pr) {
         for (uint32_t p = 0; p < MAX_PORTS; ++p) {
             g_port_table[pr][p].used    = false;
             g_port_table[pr][p].pid     = PORT_FREE_OWNER;
@@ -27,7 +29,18 @@ int port_alloc_ephemeral(protocol_t proto,
                          port_recv_handler_t handler)
 {
     if (!proto_valid(proto)) return -1;
-    for (uint16_t p = PORT_MIN_EPHEMERAL; p <= PORT_MAX_EPHEMERAL; ++p) {
+
+    rng_t rng;
+    rng_init_random(&rng);
+    uint32_t seed = rng_next32(&rng);
+
+    uint32_t minp = (uint32_t)PORT_MIN_EPHEMERAL;
+    uint32_t maxp = (uint32_t)PORT_MAX_EPHEMERAL;
+    uint32_t range = maxp - minp + 1u;
+    uint32_t first = minp + (seed % range);
+
+    for (uint32_t i = 0; i < range; ++i) {
+        uint32_t p = minp + ((first - minp + i) % range);
         port_entry_t *e = &g_port_table[proto][p];
         if (!e->used) {
             e->used = true;
@@ -67,8 +80,8 @@ bool port_unbind(protocol_t proto,
 }
 
 void port_unbind_all(uint16_t pid) {
-    for (int pr = 0; pr < PROTO_COUNT; ++pr) {
-        for (uint16_t p = 1; p < MAX_PORTS; ++p) {
+    for (uint32_t pr = 0; pr < PROTO_COUNT; ++pr) {
+        for (uint32_t p = 1; p < MAX_PORTS; ++p) {
             port_entry_t *e = &g_port_table[pr][p];
             if (e->used && e->pid == pid) {
                 e->used    = false;
diff --git a/kernel/networking/processes/net_proc.c b/kernel/networking/processes/net_proc.c
index 49f4840d..93a772d0 100644
--- a/kernel/networking/processes/net_proc.c
+++ b/kernel/networking/processes/net_proc.c
@@ -21,8 +21,6 @@ extern uintptr_t malloc(uint64_t size);
 extern void free(void *ptr, uint64_t size);
 extern void sleep(uint64_t ms);
 
-#define KP(fmt, ...) do { kprintf(fmt, ##__VA_ARGS__); } while (0)
-
 static uint32_t pick_probe_ip() {
     const net_cfg_t *cfg = ipv4_get_cfg();
     if (!cfg || cfg->mode == NET_MODE_DISABLED || cfg->ip == 0)
@@ -123,7 +121,7 @@ void run_http_server() {
         return;
     }
 
-    KP("[HTTP] listening on port 80");
+    kprintf("[HTTP] listening on port 80");
 
     static const char HTML_ROOT[] =
         "<h1>Hello, world!</h1>\n"
@@ -149,7 +147,7 @@ void run_http_server() {
             char tmp[128] = {0};
             uint32_t n = req.path.length < sizeof(tmp) - 1 ? req.path.length : sizeof(tmp) - 1;
             memcpy(tmp, req.path.data, n);
-            KP("[HTTP] GET %s", tmp);
+            kprintf("[HTTP] GET %s", tmp);
         }
 
         HTTPResponseMsg res = {0};
@@ -179,8 +177,10 @@ void run_http_server() {
 }
 
 static void test_http(uint32_t ip) {
-    KP("[HTTP] GET %i.%i.%i.%i:80\n", (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, (ip >> 8) & 0xFF, ip & 0xFF);
+    char ip_str[16];
+    ipv4_to_string(ip, ip_str);
 
+    kprintf("[HTTP] GET %s:80\n", ip_str);
     uint16_t pid = get_current_proc_pid();
     http_client_handle_t cli = http_client_create(pid);
     if (!cli)
@@ -205,7 +205,7 @@ static void test_http(uint32_t ip) {
         if (body_str) {
             memcpy(body_str, (void*)resp.body.ptr, resp.body.size);
             body_str[resp.body.size] = '\0';
-            KP("[HTTP] %i %i bytes of body%s\n", (uint64_t)resp.status_code, (uint64_t)resp.body.size, body_str);
+            kprintf("[HTTP] %i %i bytes of body%s\n", (uint64_t)resp.status_code, (uint64_t)resp.body.size, body_str);
             free(body_str, resp.body.size + 1);
         }
     }
@@ -235,16 +235,14 @@ void print_info() {
 
         const net_cfg_t *cfg = ipv4_get_cfg();
         if (cfg && cfg->mode != NET_MODE_DISABLED && cfg->ip != 0) {
-            KP("[NET] IP: %i.%i.%i.%i MASK: %i.%i.%i.%i GW: %i.%i.%i.%i",
-                (cfg->ip >> 24) & 0xFF, (cfg->ip >> 16) & 0xFF,
-                (cfg->ip >> 8) & 0xFF, cfg->ip & 0xFF,
-                (cfg->mask >> 24) & 0xFF, (cfg->mask >> 16) & 0xFF,
-                (cfg->mask >> 8) & 0xFF, cfg->mask & 0xFF,
-                (cfg->gw >> 24) & 0xFF, (cfg->gw >> 16) & 0xFF,
-                (cfg->gw >> 8) & 0xFF, cfg->gw & 0xFF);
-            }
-
-        KP("[NET] PIDs -- NET: %i ARP: %i DHCP: %i DNS: %i SNTP: %i",
+            char ip_str[16], mask_str[16], gw_str[16];
+            ipv4_to_string(cfg->ip,   ip_str);
+            ipv4_to_string(cfg->mask, mask_str);
+            ipv4_to_string(cfg->gw,   gw_str);
+
+            kprintf("[NET] IP: %s MASK: %s GW: %s", ip_str, mask_str, gw_str);
+        }
+        kprintf("[NET] PIDs -- NET: %i ARP: %i DHCP: %i DNS: %i SNTP: %i",
         network_net_get_pid(),
         arp_get_pid(),
         dhcp_get_pid(),
@@ -252,23 +250,22 @@ void print_info() {
         sntp_get_pid());
 
         timer_set_timezone_minutes(120);
-        KP("[TIME]timezone offset %i minutes", (int32_t)timer_get_timezone_minutes());
+        kprintf("[TIME]timezone offset %i minutes", (int32_t)timer_get_timezone_minutes());
 
         DateTime now_dt_utc, now_dt_loc;
         if (timer_now_datetime(&now_dt_utc, 0)) {
             char s[20];
             timer_datetime_to_string(&now_dt_utc, s, sizeof s);
-            KP("[TIME] UTC: %s", s);
+            kprintf("[TIME] UTC: %s", s);
         }
         if (timer_now_datetime(&now_dt_loc, 1)) {
             char s[20];
             timer_datetime_to_string(&now_dt_loc, s, sizeof s);
-            KP("[TIME] LOCAL: %s (TZ %i min)", s, (int32_t)timer_get_timezone_minutes());
+            kprintf("[TIME] LOCAL: %s (TZ %i min)", s, (int32_t)timer_get_timezone_minutes());
         }
-        uint32_t ip;
-        char domain[] = "home.leox.me";
-        dns_result_t r = dns_resolve_a(domain, &ip, DNS_USE_BOTH, 3000);
-        KP("[DNS] domain %s translated in %i.%i.%i.%i, status %i", domain, (ip>>24)&0xFF, (ip>>16)&0xFF, (ip>>8)&0xFF, (ip&0xFF), (int)r);
+        //uint32_t ip;
+        //char domain[] = "google.com";
+        //dns_result_t r = dns_resolve_a(domain, &ip, DNS_USE_BOTH, 3000);
     }
 }
 
@@ -281,7 +278,10 @@ void test_net() {
         print_info();
 
         uint32_t bcast = ipv4_broadcast(cfg->ip, cfg->mask);
-        KP("[NET] probing broadcast %i.%i.%i.%i", (bcast>>24)&0xFF, (bcast>>16)&0xFF, (bcast>>8)&0xFF, (bcast&0xFF));
+        char bcast_str[16];
+        ipv4_to_string(bcast, bcast_str);
+
+        kprintf("[NET] probing broadcast %s", bcast_str);
 
         if (udp_probe_server(bcast, 8080, &l2, &srv))
             test_http(srv.ip);
@@ -297,7 +297,7 @@ void test_net() {
 
     if (udp_probe_server(fallback, 8080, &l2, &srv))
         test_http(srv.ip);
-    else KP("[NET] could not find update server\n");
+    else kprintf("[NET] could not find update server\n");
 }
 
 void ip_waiter_entry() {
diff --git a/shared/net/application_layer/dhcp.c b/shared/net/application_layer/dhcp.c
index 431292df..92294ca6 100644
--- a/shared/net/application_layer/dhcp.c
+++ b/shared/net/application_layer/dhcp.c
@@ -71,6 +71,9 @@ uint16_t dhcp_parse_option(const dhcp_packet *p, uint16_t wanted) {
 }
 
 uint8_t dhcp_option_len(const dhcp_packet *p, uint16_t idx) {
-    if (idx == 0 || idx + 1 >= sizeof(p->options)) return 0;
-    return p->options[idx+1];
+    size_t opt_size = sizeof(p->options);
+
+    if (idx == 0 || (size_t)idx + 1 >= opt_size) return 0;
+    return p->options[idx + 1];
 }
+
diff --git a/shared/net/application_layer/dhcp_daemon.c b/shared/net/application_layer/dhcp_daemon.c
index 430da49b..dff53980 100644
--- a/shared/net/application_layer/dhcp_daemon.c
+++ b/shared/net/application_layer/dhcp_daemon.c
@@ -4,7 +4,7 @@
 #include "std/memfunctions.h"
 #include "process/scheduler.h"
 #include "math/math.h"
-#include "math/rng.h"+
+#include "math/rng.h"
 
 #include "networking/network.h"
 #include "net/application_layer/dhcp.h"
@@ -40,8 +40,6 @@ typedef enum {
     DHCP_S_REBINDING
 } dhcp_state_t;
 
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while(0)
 static dhcp_state_t g_state = DHCP_S_INIT;
 static net_l2l3_endpoint g_local_ep = {0};
 static volatile bool g_force_renew = false;
@@ -56,12 +54,8 @@ bool dhcp_is_running() { return g_pid_dhcpd != 0xFFFF; }
 void dhcp_set_pid(uint16_t p){ g_pid_dhcpd = p;    }
 void dhcp_force_renew() { g_force_renew = true; }
 
-static inline uint32_t rd_be32(const uint8_t* p){
-    uint32_t v; memcpy(&v, p, 4); return __builtin_bswap32(v);
-}
-
 static void log_state_change(dhcp_state_t old, dhcp_state_t now){
-    KP("[DHCP] state %i -> %i", old, now);
+    kprintf("[DHCP] state %i -> %i", old, now);
 }
 
 static void dhcp_apply_offer(dhcp_packet *p, dhcp_request *req, uint32_t xid);
@@ -77,7 +71,7 @@ static void dhcp_tx_packet(const dhcp_request *req,
 }
 
 static void dhcp_send_discover(uint32_t xid){
-    KP("[DHCP] discover xid=%i", xid);
+    kprintf("[DHCP] discover xid=%i", xid);
     dhcp_request req = {0};
     memcpy(req.mac, g_local_ep.mac, 6);
     dhcp_tx_packet(&req, DHCPDISCOVER, xid, 0xFFFFFFFFu);
@@ -88,7 +82,7 @@ static void dhcp_send_request(const dhcp_request *req,
                             bool broadcast)
 {
     uint32_t dst = broadcast ? 0xFFFFFFFFu : __builtin_bswap32(req->server_ip);
-    //KP("[DHCP] request xid=%i dst=%x\n", (uint64_t)xid, (uint64_t)dst);
+    //kprintf("[DHCP] request xid=%i dst=%x\n", (uint64_t)xid, (uint64_t)dst);
     dhcp_tx_packet(req, DHCPREQUEST, xid, dst);
 }
 
@@ -99,7 +93,7 @@ static void dhcp_send_renew(uint32_t xid) {
     req.offered_ip = __builtin_bswap32(cfg->ip);
     req.server_ip  = cfg->rt ? cfg->rt->server_ip : 0;
     uint32_t dst = req.server_ip ? __builtin_bswap32(req.server_ip) : 0xFFFFFFFFu;
-    KP("[DHCP] renew xid=%i dst=%x", xid, dst);
+    kprintf("[DHCP] renew xid=%i dst=%x", xid, dst);
     dhcp_tx_packet(&req, DHCPREQUEST, xid, dst);
 }
 
@@ -109,7 +103,7 @@ static void dhcp_send_rebind(uint32_t xid) {
     memcpy(req.mac, g_local_ep.mac, 6);
     req.offered_ip = __builtin_bswap32(cfg->ip);
     req.server_ip  = 0;
-    KP("[DHCP] rebind xid=%i", xid);
+    kprintf("[DHCP] rebind xid=%i", xid);
     dhcp_tx_packet(&req, DHCPREQUEST, xid, 0xFFFFFFFFu);
 }
 
@@ -138,7 +132,7 @@ static bool dhcp_wait_for_type(uint8_t wanted,
             waited += 50;
         }
     }
-    KP("[DHCP] wait timeout type=%i", wanted);
+    kprintf("[DHCP] wait timeout type=%i", wanted);
     return false;
 }
 
@@ -249,7 +243,7 @@ void dhcp_daemon_entry(){
     dhcp_set_pid(get_current_proc_pid());
     g_sock = udp_socket_create(SOCK_ROLE_SERVER, g_pid_dhcpd);
     if(socket_bind_udp(g_sock, 68) != 0){
-        KP("[DHCP] bind failed\n");
+        kprintf("[DHCP] bind failed\n");
         return;
     }
 
diff --git a/shared/net/application_layer/dns.c b/shared/net/application_layer/dns.c
index f908aca3..4d2301c6 100644
--- a/shared/net/application_layer/dns.c
+++ b/shared/net/application_layer/dns.c
@@ -4,14 +4,10 @@
 #include "process/scheduler.h"
 #include "net/internet_layer/ipv4.h"
 #include "dns_daemon.h"
+#include "types.h"
 
 extern void sleep(uint64_t ms);
 
-static inline uint16_t read_be16(const uint8_t* p){ uint16_t v; memcpy(&v,p,2); return __builtin_bswap16(v); }
-static inline uint32_t read_be32(const uint8_t* p){ uint32_t v; memcpy(&v,p,4); return __builtin_bswap32(v); }
-static inline void write_be16(uint8_t* p, uint16_t v){ v = __builtin_bswap16(v); memcpy(p,&v,2); }
-static inline void write_be32(uint8_t* p, uint32_t v){ v = __builtin_bswap32(v); memcpy(p,&v,4); }
-
 static uint32_t encode_dns_qname(uint8_t* dst, const char* name){
     uint32_t index = 0;
     uint32_t label_len = 0;
@@ -41,10 +37,10 @@ static uint32_t skip_dns_name(const uint8_t* message, uint32_t message_len, uint
 
 static dns_result_t parse_dns_a_record(uint8_t* buffer, uint32_t buffer_len, uint16_t message_id, uint32_t* out_ip){
     if (buffer_len < 12) return DNS_ERR_FORMAT;
-    if (read_be16(buffer+0) != message_id) return DNS_ERR_FORMAT;
-    uint16_t flags = read_be16(buffer+2);
-    uint16_t question_count = read_be16(buffer+4);
-    uint16_t answer_count = read_be16(buffer+6);
+    if (rd_be16(buffer+0) != message_id) return DNS_ERR_FORMAT;
+    uint16_t flags = rd_be16(buffer+2);
+    uint16_t question_count = rd_be16(buffer+4);
+    uint16_t answer_count = rd_be16(buffer+6);
     if ((flags & 0x000F) == 3) return DNS_ERR_NXDOMAIN;
     uint32_t offset = 12;
     for (uint16_t i = 0; i < question_count; ++i){
@@ -55,13 +51,13 @@ static dns_result_t parse_dns_a_record(uint8_t* buffer, uint32_t buffer_len, uin
     for (uint16_t i = 0; i < answer_count; ++i){
         offset = skip_dns_name(buffer, buffer_len, offset);
         if (offset + 10 > buffer_len) return DNS_ERR_FORMAT;
-        uint16_t type = read_be16(buffer+offset+0);
-        uint16_t klass = read_be16(buffer+offset+2);
-        uint16_t rdlength = read_be16(buffer+offset+8);
+        uint16_t type = rd_be16(buffer+offset+0);
+        uint16_t klass = rd_be16(buffer+offset+2);
+        uint16_t rdlength = rd_be16(buffer+offset+8);
         offset += 10;
         if (offset + rdlength > buffer_len) return DNS_ERR_FORMAT;
         if (type == 1 && klass == 1 && rdlength == 4){
-            uint32_t ip_host = read_be32(buffer+offset);
+            uint32_t ip_host = rd_be32(buffer+offset);
             *out_ip = ip_host;
             return DNS_OK;
         }
@@ -74,13 +70,13 @@ static dns_result_t perform_dns_query_once(socket_handle_t sock, uint32_t dns_ip
     uint8_t request_buffer[512]; memset(request_buffer,0,sizeof(request_buffer));
     rng_t rng; rng_init_random(&rng);
     uint16_t message_id = (uint16_t)(rng_next32(&rng) & 0xFFFF);
-    write_be16(request_buffer+0, message_id);
-    write_be16(request_buffer+2, 0x0100);
-    write_be16(request_buffer+4, 1);
+    wr_be16(request_buffer+0, message_id);
+    wr_be16(request_buffer+2, 0x0100);
+    wr_be16(request_buffer+4, 1);
     uint32_t offset = 12;
     offset += encode_dns_qname(request_buffer+offset, name);
-    write_be16(request_buffer+offset+0, 1);
-    write_be16(request_buffer+offset+2, 1);
+    wr_be16(request_buffer+offset+0, 1);
+    wr_be16(request_buffer+offset+2, 1);
     offset += 4;
     int64_t sent = socket_sendto_udp(sock, dns_ip_host, 53, request_buffer, offset);
     if (sent < 0) return DNS_ERR_SEND;
diff --git a/shared/net/application_layer/sntp.c b/shared/net/application_layer/sntp.c
index 89059d50..5295be2e 100644
--- a/shared/net/application_layer/sntp.c
+++ b/shared/net/application_layer/sntp.c
@@ -5,6 +5,7 @@
 #include "net/transport_layer/csocket_udp.h"
 #include "process/scheduler.h"
 #include "console/kio.h"
+#include "types.h"
 
 #define NTP_PORT 123
 #define NTP_UNIX_EPOCH_DELTA 2208988800UL
@@ -25,10 +26,6 @@ typedef struct __attribute__((packed)) {
     uint64_t txTs;
 } ntp_packet_t;
 
-static inline uint16_t be16(uint16_t v){ return __builtin_bswap16(v); }
-static inline uint32_t be32(uint32_t v){ return __builtin_bswap32(v); }
-static inline uint64_t be64(uint64_t v){ return __builtin_bswap64(v); }
-
 static uint64_t unix_us_to_ntp64_be(uint64_t unix_us){
     uint64_t sec = unix_us / 1000000ULL;
     uint64_t frac = ((unix_us % 1000000ULL) << 32) / 1000000ULL;
diff --git a/shared/net/application_layer/socket_http_client.hpp b/shared/net/application_layer/socket_http_client.hpp
index 728ee4c0..d8524512 100644
--- a/shared/net/application_layer/socket_http_client.hpp
+++ b/shared/net/application_layer/socket_http_client.hpp
@@ -4,8 +4,6 @@
 #include "http.h"
 #include "std/string.h"
 #include "std/memfunctions.h"
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while (0)
 
 class HTTPClient {
 private:
diff --git a/shared/net/application_layer/socket_http_server.hpp b/shared/net/application_layer/socket_http_server.hpp
index 80d495e7..8d7a8501 100644
--- a/shared/net/application_layer/socket_http_server.hpp
+++ b/shared/net/application_layer/socket_http_server.hpp
@@ -6,9 +6,6 @@
 #include "std/string.h"
 #include "std/memfunctions.h"
 
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while (0)
-
 class HTTPServer {
 private:
     TCPSocket sock;
diff --git a/shared/net/internet_layer/icmp.c b/shared/net/internet_layer/icmp.c
index 11aa79d9..804eacd9 100644
--- a/shared/net/internet_layer/icmp.c
+++ b/shared/net/internet_layer/icmp.c
@@ -53,10 +53,8 @@ void create_icmp_packet(uintptr_t p,
     pkt->id   = __builtin_bswap16(d->id);
     pkt->seq  = __builtin_bswap16(d->seq);
 
-    if (d->payload)
-        memcpy(pkt->payload, d->payload, 56);
-    else
-        memset(pkt->payload, 0, 56);
+    memset(pkt->payload, 0, sizeof(pkt->payload));
+    memcpy(pkt->payload, d->payload, sizeof(pkt->payload));
 
     pkt->checksum = 0;
 }
diff --git a/shared/net/internet_layer/ipv4.c b/shared/net/internet_layer/ipv4.c
index 6ee6545d..f52da124 100644
--- a/shared/net/internet_layer/ipv4.c
+++ b/shared/net/internet_layer/ipv4.c
@@ -59,12 +59,33 @@ const net_cfg_t* ipv4_get_cfg() {
     return &g_net_cfg;
 }
 
-string ipv4_to_string(uint32_t ip) {
-    return string_format("%i.%i.%i.%i",
-                        (ip>>24)&0xFF,
-                        (ip>>16)&0xFF,
-                        (ip>>8)&0xFF,
-                        ip&0xFF);
+static char* u8_to_str(uint8_t val, char* out) {
+    if (val >= 100) {
+        *out++ = '0' + (val / 100);
+        val %= 100;
+        *out++ = '0' + (val / 10);
+        *out++ = '0' + (val % 10);
+    } else if (val >= 10) {
+        *out++ = '0' + (val / 10);
+        *out++ = '0' + (val % 10);
+    } else {
+        *out++ = '0' + val;
+    }
+    return out;
+}
+
+void ipv4_to_string(uint32_t ip, char* buf) {
+    uint8_t a = (ip >> 24) & 0xFF;
+    uint8_t b = (ip >> 16) & 0xFF;
+    uint8_t c = (ip >> 8)  & 0xFF;
+    uint8_t d = ip & 0xFF;
+
+    char* p = buf;
+    p = u8_to_str(a, p); *p++ = '.';
+    p = u8_to_str(b, p); *p++ = '.';
+    p = u8_to_str(c, p); *p++ = '.';
+    p = u8_to_str(d, p);
+    *p = '\0';
 }
 
 static uint16_t ipv4_checksum(const void *buf, size_t len) {
@@ -121,7 +142,7 @@ void ip_input(uintptr_t ip_ptr,
             udp_input(payload_ptr, payload_len, sip, dip);
             break;
         default:
-            //everything elese
+            //everything else
             break;
     }
 }
diff --git a/shared/net/internet_layer/ipv4.h b/shared/net/internet_layer/ipv4.h
index 40fefe2d..b005ef9f 100644
--- a/shared/net/internet_layer/ipv4.h
+++ b/shared/net/internet_layer/ipv4.h
@@ -47,7 +47,7 @@ void ipv4_cfg_init();
 void ipv4_set_cfg(const net_cfg_t *src);
 const net_cfg_t* ipv4_get_cfg();
 
-string ipv4_to_string(uint32_t ip);
+void ipv4_to_string(uint32_t ip, char* buf);
 
 void ipv4_send_segment(uint32_t src_ip,
                             uint32_t dst_ip,
diff --git a/shared/net/link_layer/arp.c b/shared/net/link_layer/arp.c
index 9d92aab1..d685e63e 100644
--- a/shared/net/link_layer/arp.c
+++ b/shared/net/link_layer/arp.c
@@ -20,8 +20,6 @@ extern void      free(void *ptr, uint64_t size);
 static uint16_t g_arp_pid = 0xFFFF;
 static arp_entry_t g_arp_table[ARP_TABLE_MAX];
 static bool init = false;
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while (0)
 
 void arp_set_pid(uint16_t pid) { g_arp_pid = pid; }
 uint16_t arp_get_pid() { return g_arp_pid; }
@@ -60,13 +58,6 @@ void arp_table_put(uint32_t ip, const uint8_t mac[6], uint32_t ttl_ms, bool is_s
     memcpy(g_arp_table[idx].mac, mac, 6);
     g_arp_table[idx].ttl_ms = is_static ? 0 : ttl_ms;
     g_arp_table[idx].static_entry = is_static ? 1 : 0;
-
-    /*KP("[ARP] put %i.%i.%i.%i -> %x:%x:%x:%x:%x:%x static=%i ttl=%i\n",
-       (uint64_t)((ip>>24)&0xFF), (uint64_t)((ip>>16)&0xFF),
-       (uint64_t)((ip>>8)&0xFF),  (uint64_t)(ip&0xFF),
-       (uint64_t)mac[0], (uint64_t)mac[1], (uint64_t)mac[2],
-       (uint64_t)mac[3], (uint64_t)mac[4], (uint64_t)mac[5],
-       (uint64_t)g_arp_table[idx].static_entry, (uint64_t)ttl_ms);*/
 }
 
 bool arp_table_get(uint32_t ip, uint8_t mac_out[6]) {
diff --git a/shared/net/transport_layer/socket_tcp.hpp b/shared/net/transport_layer/socket_tcp.hpp
index 59363d5c..4fbc9800 100644
--- a/shared/net/transport_layer/socket_tcp.hpp
+++ b/shared/net/transport_layer/socket_tcp.hpp
@@ -9,9 +9,6 @@
 #include "types.h"
 #include "data_struct/ring_buffer.hpp"
 
-#define KP(fmt, ...) \
-    do { kprintf(fmt, ##__VA_ARGS__); } while (0)
-    
 extern "C" {
     void      sleep(uint64_t ms);
     uintptr_t malloc(uint64_t size);
@@ -154,7 +151,7 @@ class TCPSocket : public Socket {
         flow->payload = { (uintptr_t)buf, (uint32_t)len };
         flow->flags = (1<<PSH_F) | (1<<ACK_F);
         tcp_result_t res = tcp_flow_send(flow);
-        return (res == TCP_OK) ? (int64_t)len : res;
+        return (res == TCP_OK) ? static_cast<int64_t>(len) : static_cast<int64_t>(res);
     }
 
     int64_t recv(void* buf, uint64_t len) {
diff --git a/shared/net/transport_layer/tcp.c b/shared/net/transport_layer/tcp.c
index 5bd86a31..ff63ad33 100644
--- a/shared/net/transport_layer/tcp.c
+++ b/shared/net/transport_layer/tcp.c
@@ -88,7 +88,7 @@ uint16_t tcp_compute_checksum(const void *segment,
     return htons((uint16_t)(~sum & 0xFFFF));
 }
 
-static int find_flow(uint16_t local_port, uint32_t remote_ip, uint16_t remote_port) {
+int find_flow(uint16_t local_port, uint32_t remote_ip, uint16_t remote_port) {
     for (int i = 0; i < MAX_TCP_FLOWS; ++i) {
         tcp_flow_t *f = &tcp_flows[i];
         if (f->state != TCP_STATE_CLOSED) {
@@ -424,13 +424,17 @@ void tcp_input(uintptr_t ptr, uint32_t len, uint32_t src_ip, uint32_t dst_ip) {
     uint16_t window = ntohs(hdr->window);
     int idx = find_flow(dst_port, src_ip, src_port);
     tcp_flow_t *flow = (idx >= 0 ? &tcp_flows[idx] : NULL);
+    if (flow) {
+        flow->ctx.window = window;
+    }
 
     if (!flow) {
         int listen_idx = find_flow(dst_port, 0, 0);
-        if ((flags & (1<<SYN_F)) && !(flags & (1<<ACK_F)) && listen_idx >= 0) {
-            //TODO: use a syscall for the rng
+        if ((flags & (1u<<SYN_F)) && !(flags & (1u<<ACK_F)) && listen_idx >= 0) {
+            // TODO syscall for rng
             rng_t rng;
             rng_init_random(&rng);
+
             tcp_flow_t *lf = &tcp_flows[listen_idx];
             int new_idx = allocate_flow_entry();
             if (new_idx < 0) return;
@@ -441,16 +445,16 @@ void tcp_input(uintptr_t ptr, uint32_t len, uint32_t src_ip, uint32_t dst_ip) {
             flow->remote.port = src_port;
             flow->state = TCP_SYN_RECEIVED;
             flow->retries = TCP_SYN_RETRIES;
-            
+
+            flow->ctx.window = lf->ctx.window ? lf->ctx.window : 0xFFFF;
+            flow->ctx.flags = 0;
+            flow->ctx.options = lf->ctx.options;
+            flow->ctx.payload.ptr  = 0;
+            flow->ctx.payload.size = 0;
+
             uint32_t iss = rng_next32(&rng);
             flow->ctx.sequence = iss;
             flow->ctx.ack = seq + 1;
-            flow->ctx.window = 0xFFFF;
-            flow->ctx.flags = 0;
-            flow->ctx.options.ptr = 0;
-            flow->ctx.options.size = 0;
-            flow->ctx.payload.ptr = 0;
-            flow->ctx.payload.size = 0;
             flow->ctx.expected_ack = iss + 1;
             flow->ctx.ack_received = 0;
 
@@ -459,16 +463,15 @@ void tcp_input(uintptr_t ptr, uint32_t len, uint32_t src_ip, uint32_t dst_ip) {
             synack_hdr.dst_port = htons(src_port);
             synack_hdr.sequence = htonl(iss);
             synack_hdr.ack      = htonl(seq + 1);
-            synack_hdr.flags    = (1<<SYN_F) | (1<<ACK_F);
-            synack_hdr.window   = flow->ctx.window;
+            synack_hdr.flags    = (uint8_t)((1u<<SYN_F) | (1u<<ACK_F));
+            synack_hdr.window   = htons(flow->ctx.window);
             synack_hdr.urgent_ptr = 0;
             uint32_t src_ip_local = ipv4_get_cfg()->ip;
             send_tcp_segment(src_ip_local, src_ip, &synack_hdr, NULL, 0);
-
             return;
         } else {
-            if (!(flags & (1<<RST_F))) {
-                if (flags & (1<<ACK_F)) {
+            if (!(flags & (1u<<RST_F))) {
+                if (flags & (1u<<ACK_F)) {
                     send_reset(dst_ip, src_ip, dst_port, src_port, seq, ack, false);
                 } else {
                     send_reset(dst_ip, src_ip, dst_port, src_port, seq, ack, true);
@@ -519,23 +522,26 @@ void tcp_input(uintptr_t ptr, uint32_t len, uint32_t src_ip, uint32_t dst_ip) {
             free_flow_entry(idx);
         }
         return;
-    case TCP_ESTABLISHED: //keep alive
-        uint8_t hdr_len  = (hdr->data_offset_reserved >> 4) * 4;
-        uint32_t data_len = len - hdr_len;
+    case TCP_ESTABLISHED: {
+        uint8_t hdr_len = (uint8_t)((hdr->data_offset_reserved >> 4) * 4);
+        if (len < hdr_len) return;
 
-        if ((flags & ACK_F)
-            && !(flags & (SYN_F|FIN_F|RST_F))
-            && data_len == 0
-            && seq + 1 == flow->ctx.ack)
-        {
-            tcp_hdr_t ack_hdr = {
-                .src_port    = htons(flow->local_port),
-                .dst_port    = htons(flow->remote.port),
-                .sequence    = htonl(flow->ctx.sequence),
-                .ack         = htonl(flow->ctx.ack),
-                .flags       = (1 << ACK_F),
-                .window      = flow->ctx.window,
-                .urgent_ptr  = 0
+        uint32_t data_len = len - hdr_len;
+        const bool is_ack_only =
+            ( (flags & (1u << ACK_F)) != 0 ) &&
+            ( (flags & ((1u << SYN_F) | (1u << FIN_F) | (1u << RST_F))) == 0 ) &&
+            ( data_len == 0 ) &&
+            ( seq + 1u == flow->ctx.ack );
+
+        if (is_ack_only) {
+            tcp_hdr_t ack_hdr = (tcp_hdr_t){
+                .src_port   = htons(flow->local_port),
+                .dst_port   = htons(flow->remote.port),
+                .sequence   = htonl(flow->ctx.sequence),
+                .ack        = htonl(flow->ctx.ack),
+                .flags      = (uint8_t)(1u << ACK_F),
+                .window     = htons(flow->ctx.window),
+                .urgent_ptr = 0
             };
             send_tcp_segment(
                 ipv4_get_cfg()->ip,
@@ -544,6 +550,9 @@ void tcp_input(uintptr_t ptr, uint32_t len, uint32_t src_ip, uint32_t dst_ip) {
             );
             return;
         }
+
+        __attribute__((fallthrough));
+    }
     case TCP_FIN_WAIT_1:
     case TCP_FIN_WAIT_2:
     case TCP_CLOSE_WAIT:
diff --git a/shared/net/transport_layer/tcp.h b/shared/net/transport_layer/tcp.h
index 4a6f20c2..70f546a1 100644
--- a/shared/net/transport_layer/tcp.h
+++ b/shared/net/transport_layer/tcp.h
@@ -81,7 +81,7 @@ typedef struct {
 #define TCP_DATA_RETRIES 5
 #define TCP_RETRY_TIMEOUT_MS 1000
 
-static int find_flow(uint16_t local_port, uint32_t remote_ip, uint16_t remote_port);
+int find_flow(uint16_t local_port, uint32_t remote_ip, uint16_t remote_port);
 
 tcp_data* tcp_get_ctx(uint16_t local_port,
                     uint32_t remote_ip,
diff --git a/shared/net/transport_layer/udp.c b/shared/net/transport_layer/udp.c
index 7a478b6e..bed8334e 100644
--- a/shared/net/transport_layer/udp.c
+++ b/shared/net/transport_layer/udp.c
@@ -9,8 +9,6 @@ extern void sleep(uint64_t ms);
 extern uintptr_t malloc(uint64_t size);
 extern void      free(void *ptr, uint64_t size);
 
-static inline uint16_t bswap16(uint16_t v) { return __builtin_bswap16(v); }
-
 bool udp_bind(uint16_t port,
             uint16_t pid,
             port_recv_handler_t handler)
diff --git a/shared/types.h b/shared/types.h
index a787599d..e87cd995 100644
--- a/shared/types.h
+++ b/shared/types.h
@@ -8,7 +8,39 @@
 extern "C" {
 #endif
 
+#define bswap16(v) __builtin_bswap16((uint16_t)(v))
+#define bswap32(v) __builtin_bswap32((uint32_t)(v))
+#define bswap64(v) __builtin_bswap64((uint64_t)(v))
 
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+  #define be16(v) bswap16(v)
+  #define be32(v) bswap32(v)
+  #define be64(v) bswap64(v)
+#else
+  #define be16(v) ((uint16_t)(v))
+  #define be32(v) ((uint32_t)(v))
+  #define be64(v) ((uint64_t)(v))
+#endif
+
+#define rd_be16(p) ( ((uint16_t)((const uint8_t*)(p))[0] << 8)  | \
+                     ((uint16_t)((const uint8_t*)(p))[1]) )
+
+#define rd_be32(p) ( ((uint32_t)((const uint8_t*)(p))[0] << 24) | \
+                     ((uint32_t)((const uint8_t*)(p))[1] << 16) | \
+                     ((uint32_t)((const uint8_t*)(p))[2] << 8)  | \
+                     ((uint32_t)((const uint8_t*)(p))[3]) )
+
+#define wr_be16(p, v) do { \
+    (p)[0] = (uint8_t)((v) >> 8); \
+    (p)[1] = (uint8_t)(v); \
+} while(0)
+
+#define wr_be32(p, v) do { \
+    (p)[0] = (uint8_t)((v) >> 24); \
+    (p)[1] = (uint8_t)((v) >> 16); \
+    (p)[2] = (uint8_t)((v) >> 8);  \
+    (p)[3] = (uint8_t)(v); \
+} while(0)
 
 typedef unsigned int uint32_t;
 typedef long unsigned int size_t;

From e226f6ada7c9537f8a9f641d7d1ff878ac0ced2a Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 15:51:49 +0200
Subject: [PATCH 3/6] minor fixes, resolved memory leak in http_server

---
 kernel/networking/network.cpp                        |  2 +-
 shared/net/application_layer/csocket_http_client.cpp |  3 +--
 shared/net/application_layer/csocket_http_server.cpp | 10 ++++------
 shared/net/application_layer/dhcp.c                  |  2 --
 shared/net/application_layer/sntp.c                  |  4 ++--
 shared/net/application_layer/socket_http_server.hpp  |  2 --
 shared/net/internet_layer/ipv4.c                     |  2 +-
 7 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/kernel/networking/network.cpp b/kernel/networking/network.cpp
index effa3743..6d052141 100644
--- a/kernel/networking/network.cpp
+++ b/kernel/networking/network.cpp
@@ -34,7 +34,7 @@ int net_rx_frame(sizedptr *out_frame) {
 }
 
 const net_l2l3_endpoint* network_get_local_endpoint() {
-    static net_l2l3_endpoint dummy = {0};
+    static net_l2l3_endpoint dummy = {};
     return dispatch ? &dispatch->get_local_ep() : &dummy;
 }
 
diff --git a/shared/net/application_layer/csocket_http_client.cpp b/shared/net/application_layer/csocket_http_client.cpp
index baac959b..67733503 100644
--- a/shared/net/application_layer/csocket_http_client.cpp
+++ b/shared/net/application_layer/csocket_http_client.cpp
@@ -1,4 +1,3 @@
-#pragma once
 #include "csocket_http_client.h"
 #include "socket_http_client.hpp" 
 #include "net/transport_layer/socket_tcp.hpp"
@@ -14,7 +13,7 @@ extern "C" {
 http_client_handle_t http_client_create(uint16_t pid) {
     uintptr_t mem = malloc(sizeof(HTTPClient));
     if (!mem) return NULL;
-    HTTPClient *cli = reinterpret_cast<HTTPClient*>( (void*)mem );
+    //HTTPClient *cli = reinterpret_cast<HTTPClient*>( (void*)mem );
     return reinterpret_cast<http_client_handle_t>(new HTTPClient(pid));
 }
 
diff --git a/shared/net/application_layer/csocket_http_server.cpp b/shared/net/application_layer/csocket_http_server.cpp
index 7398cf43..607ca4b0 100644
--- a/shared/net/application_layer/csocket_http_server.cpp
+++ b/shared/net/application_layer/csocket_http_server.cpp
@@ -10,17 +10,15 @@ extern "C" {
 extern "C" {
 
 http_server_handle_t http_server_create(uint16_t pid) {
-    void* raw = (void*)malloc(sizeof(HTTPServer));
-    if (!raw) return nullptr;
-    HTTPServer* srv = reinterpret_cast<HTTPServer*>(raw);
-    return reinterpret_cast<http_server_handle_t>(new HTTPServer(pid));
+    HTTPServer* srv = new HTTPServer(pid);
+    if (!srv) return nullptr;
+    return reinterpret_cast<http_server_handle_t>(srv);
 }
 
 void http_server_destroy(http_server_handle_t h) {
     if (!h) return;
     HTTPServer* srv = reinterpret_cast<HTTPServer*>(h);
-    srv->~HTTPServer();
-    free(srv, sizeof(HTTPServer));
+    delete srv;
 }
 
 int32_t http_server_bind(http_server_handle_t h, uint16_t port) {
diff --git a/shared/net/application_layer/dhcp.c b/shared/net/application_layer/dhcp.c
index 92294ca6..6768ff5e 100644
--- a/shared/net/application_layer/dhcp.c
+++ b/shared/net/application_layer/dhcp.c
@@ -5,8 +5,6 @@
 #include "types.h"
 #include "net/transport_layer/csocket_udp.h"
 
-static socket_handle_t g_dhcp_socket = NULL;
-
 extern uintptr_t malloc(uint64_t size);
 extern void      free(void *ptr, uint64_t size);
 extern void      sleep(uint64_t ms);
diff --git a/shared/net/application_layer/sntp.c b/shared/net/application_layer/sntp.c
index 5295be2e..d166f6f9 100644
--- a/shared/net/application_layer/sntp.c
+++ b/shared/net/application_layer/sntp.c
@@ -69,7 +69,7 @@ sntp_result_t sntp_poll_once(uint32_t timeout_ms){
     if (sock == 0) return SNTP_ERR_SOCKET;
 
     uint64_t t1_0 = 0, t1_1 = 0;
-    bool sent0=false, sent1=false;
+    bool sent0, sent1;
     if (s0) sent0 = (sntp_send_query(sock, s0, &t1_0) == SNTP_OK);
     if (s1 && s1 != s0) sent1 = (sntp_send_query(sock, s1, &t1_1) == SNTP_OK);
 
@@ -136,7 +136,7 @@ sntp_result_t sntp_poll_once(uint32_t timeout_ms){
 
     uint64_t sec = best_server_unix_us / 1000000ULL;
     uint64_t frac = ((best_server_unix_us % 1000000ULL) << 32) / 1000000ULL;
-    uint64_t ntp64 = ((sec + NTP_UNIX_EPOCH_DELTA) << 32) | frac;
+    //uint64_t ntp64 = ((sec + NTP_UNIX_EPOCH_DELTA) << 32) | frac;
 
     timer_apply_sntp_sample_us(best_server_unix_us);
     return SNTP_OK;
diff --git a/shared/net/application_layer/socket_http_server.hpp b/shared/net/application_layer/socket_http_server.hpp
index 8d7a8501..ae7808b4 100644
--- a/shared/net/application_layer/socket_http_server.hpp
+++ b/shared/net/application_layer/socket_http_server.hpp
@@ -1,5 +1,3 @@
-#pragma once
-
 #include "console/kio.h"
 #include "net/transport_layer/socket_tcp.hpp"
 #include "http.h"
diff --git a/shared/net/internet_layer/ipv4.c b/shared/net/internet_layer/ipv4.c
index f52da124..92637d36 100644
--- a/shared/net/internet_layer/ipv4.c
+++ b/shared/net/internet_layer/ipv4.c
@@ -127,7 +127,7 @@ void ip_input(uintptr_t ip_ptr,
     arp_table_put(sip, src_mac, 60000, false);
 
     uint32_t dip = __builtin_bswap32(hdr->dst_ip);
-    const net_cfg_t *cfg = ipv4_get_cfg(); //TODO manage special ip
+    //TODO manage special ip
 
     uintptr_t payload_ptr = ip_ptr + header_bytes;
     uint32_t payload_len = __builtin_bswap16(hdr->total_length) - header_bytes;

From ae6f320f88faffa532c27bdad3313dbe76f58021 Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 16:07:26 +0200
Subject: [PATCH 4/6] fixed memory leak in http client

---
 kernel/networking/processes/net_proc.c               |  2 +-
 shared/net/application_layer/csocket_http_client.cpp | 12 +++++-------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/kernel/networking/processes/net_proc.c b/kernel/networking/processes/net_proc.c
index 93a772d0..2c1eb518 100644
--- a/kernel/networking/processes/net_proc.c
+++ b/kernel/networking/processes/net_proc.c
@@ -205,7 +205,7 @@ static void test_http(uint32_t ip) {
         if (body_str) {
             memcpy(body_str, (void*)resp.body.ptr, resp.body.size);
             body_str[resp.body.size] = '\0';
-            kprintf("[HTTP] %i %i bytes of body%s\n", (uint64_t)resp.status_code, (uint64_t)resp.body.size, body_str);
+            kprintf("[HTTP] %i %i bytes of body%s", (long)resp.status_code, (long)resp.body.size, (uintptr_t)body_str);
             free(body_str, resp.body.size + 1);
         }
     }
diff --git a/shared/net/application_layer/csocket_http_client.cpp b/shared/net/application_layer/csocket_http_client.cpp
index 67733503..a33c03b2 100644
--- a/shared/net/application_layer/csocket_http_client.cpp
+++ b/shared/net/application_layer/csocket_http_client.cpp
@@ -11,17 +11,15 @@ extern "C" {
 extern "C" {
 
 http_client_handle_t http_client_create(uint16_t pid) {
-    uintptr_t mem = malloc(sizeof(HTTPClient));
-    if (!mem) return NULL;
-    //HTTPClient *cli = reinterpret_cast<HTTPClient*>( (void*)mem );
-    return reinterpret_cast<http_client_handle_t>(new HTTPClient(pid));
+    HTTPClient* cli = new HTTPClient(pid);
+    if (!cli) return nullptr;
+    return reinterpret_cast<http_client_handle_t>(cli);
 }
 
 void http_client_destroy(http_client_handle_t h) {
     if (!h) return;
-    HTTPClient *cli = reinterpret_cast<HTTPClient*>(h);
-    cli->~HTTPClient();
-    free(cli, sizeof(HTTPClient));
+    HTTPClient* cli = reinterpret_cast<HTTPClient*>(h);
+    delete cli;
 }
 
 int32_t http_client_connect(http_client_handle_t h,

From e70b60a0e88678981b5dad92246c57c91e796d7d Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 16:48:15 +0200
Subject: [PATCH 5/6] resolve all network-related warnings

---
 kernel/networking/processes/net_proc.c     |  5 +++--
 shared/net/application_layer/sntp.c        | 16 ++++++++++------
 shared/net/transport_layer/csocket_tcp.cpp |  1 -
 shared/net/transport_layer/csocket_udp.cpp |  1 -
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/kernel/networking/processes/net_proc.c b/kernel/networking/processes/net_proc.c
index 2c1eb518..85bb7ab5 100644
--- a/kernel/networking/processes/net_proc.c
+++ b/kernel/networking/processes/net_proc.c
@@ -50,7 +50,7 @@ static int udp_probe_server(uint32_t probe_ip, uint16_t probe_port, net_l2l3_end
 
     char recv_buf[64];
     uint32_t waited = 0;
-    const uint32_t TIMEOUT_MS = 1000;
+    const uint32_t TIMEOUT_MS = 2000;
     const uint32_t INTERVAL_MS = 50;
     int64_t recvd = 0;
     uint32_t resp_ip = 0;
@@ -205,7 +205,8 @@ static void test_http(uint32_t ip) {
         if (body_str) {
             memcpy(body_str, (void*)resp.body.ptr, resp.body.size);
             body_str[resp.body.size] = '\0';
-            kprintf("[HTTP] %i %i bytes of body%s", (long)resp.status_code, (long)resp.body.size, (uintptr_t)body_str);
+            kprintf("[HTTP] %i %i bytes of body", resp.status_code, resp.body.size);
+            kprintf("%s\n", body_str);
             free(body_str, resp.body.size + 1);
         }
     }
diff --git a/shared/net/application_layer/sntp.c b/shared/net/application_layer/sntp.c
index d166f6f9..54c9f5b7 100644
--- a/shared/net/application_layer/sntp.c
+++ b/shared/net/application_layer/sntp.c
@@ -58,7 +58,7 @@ static sntp_result_t sntp_send_query(socket_handle_t sock, uint32_t server_ip_ho
 }
 
 sntp_result_t sntp_poll_once(uint32_t timeout_ms){
-    const net_cfg_t* cfg = ipv4_get_cfg();
+     const net_cfg_t* cfg = ipv4_get_cfg();
     if (!cfg || !cfg->rt) return SNTP_ERR_NO_CFG;
 
     uint32_t s0 = cfg->rt->ntp[0];
@@ -69,9 +69,13 @@ sntp_result_t sntp_poll_once(uint32_t timeout_ms){
     if (sock == 0) return SNTP_ERR_SOCKET;
 
     uint64_t t1_0 = 0, t1_1 = 0;
-    bool sent0, sent1;
-    if (s0) sent0 = (sntp_send_query(sock, s0, &t1_0) == SNTP_OK);
-    if (s1 && s1 != s0) sent1 = (sntp_send_query(sock, s1, &t1_1) == SNTP_OK);
+
+    if (s0) {
+        if (sntp_send_query(sock, s0, &t1_0) != SNTP_OK) t1_0 = 0;
+    }
+    if (s1 && s1 != s0) {
+        if (sntp_send_query(sock, s1, &t1_1) != SNTP_OK) t1_1 = 0;
+    }
 
     uint32_t waited = 0;
     uint64_t best_server_unix_us = 0;
@@ -134,8 +138,8 @@ sntp_result_t sntp_poll_once(uint32_t timeout_ms){
 
     if (best_server_unix_us == 0) return SNTP_ERR_TIMEOUT;
 
-    uint64_t sec = best_server_unix_us / 1000000ULL;
-    uint64_t frac = ((best_server_unix_us % 1000000ULL) << 32) / 1000000ULL;
+    //uint64_t sec = best_server_unix_us / 1000000ULL;
+    //uint64_t frac = ((best_server_unix_us % 1000000ULL) << 32) / 1000000ULL;
     //uint64_t ntp64 = ((sec + NTP_UNIX_EPOCH_DELTA) << 32) | frac;
 
     timer_apply_sntp_sample_us(best_server_unix_us);
diff --git a/shared/net/transport_layer/csocket_tcp.cpp b/shared/net/transport_layer/csocket_tcp.cpp
index af408fb6..ceb86119 100644
--- a/shared/net/transport_layer/csocket_tcp.cpp
+++ b/shared/net/transport_layer/csocket_tcp.cpp
@@ -1,4 +1,3 @@
-#pragma once
 #include "net/transport_layer/socket_tcp.hpp"
 #include "net/transport_layer/socket.hpp"
 #include "csocket_tcp.h"
diff --git a/shared/net/transport_layer/csocket_udp.cpp b/shared/net/transport_layer/csocket_udp.cpp
index ea2ae548..4dae93c3 100644
--- a/shared/net/transport_layer/csocket_udp.cpp
+++ b/shared/net/transport_layer/csocket_udp.cpp
@@ -1,4 +1,3 @@
-#pragma once
 #include "net/transport_layer/socket_udp.hpp"
 #include "net/transport_layer/socket.hpp"
 #include "csocket_udp.h"

From 58df756dd8a87b0ad40588038381304f3f5df770 Mon Sep 17 00:00:00 2001
From: CodeAnarchist <leonardo300506@gmail.com>
Date: Mon, 11 Aug 2025 21:20:14 +0200
Subject: [PATCH 6/6] merge

---
 shared/net/application_layer/dhcp_daemon.c | 3 +--
 shared/net/application_layer/dns_daemon.c  | 4 +++-
 shared/net/application_layer/dns_daemon.h  | 2 +-
 shared/net/application_layer/sntp_daemon.c | 4 +++-
 shared/net/application_layer/sntp_daemon.h | 2 +-
 shared/net/link_layer/arp.c                | 3 +--
 shared/net/link_layer/arp.h                | 2 +-
 7 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/shared/net/application_layer/dhcp_daemon.c b/shared/net/application_layer/dhcp_daemon.c
index c1c630a6..28c95612 100644
--- a/shared/net/application_layer/dhcp_daemon.c
+++ b/shared/net/application_layer/dhcp_daemon.c
@@ -239,8 +239,7 @@ static void dhcp_fsm_once()
     if (old != g_state) log_state_change(old, g_state);
 }
 
-int dhcp_daemon_entry(int argc, char* argv[])
-{
+int dhcp_daemon_entry(int argc, char* argv[]){
     (void)argc; (void)argv;
     g_pid_dhcpd = (uint16_t)get_current_proc_pid();
     dhcp_set_pid(g_pid_dhcpd);
diff --git a/shared/net/application_layer/dns_daemon.c b/shared/net/application_layer/dns_daemon.c
index 7cfc1b8a..2ab1ec55 100644
--- a/shared/net/application_layer/dns_daemon.c
+++ b/shared/net/application_layer/dns_daemon.c
@@ -12,8 +12,10 @@ bool dns_is_running(void){ return g_pid_dnsd != 0xFFFF; }
 void dns_set_pid(uint16_t p){ g_pid_dnsd = p; }
 socket_handle_t dns_socket_handle(void){ return g_sock; }
 
-void dns_deamon_entry(void){
+int dns_deamon_entry(int argc, char* argv[]){
+    (void)argc; (void)argv;
     dns_set_pid(get_current_proc_pid());
     g_sock = udp_socket_create(0, g_pid_dnsd);
     for(;;){ sleep(250); }
+    return 1;
 }
diff --git a/shared/net/application_layer/dns_daemon.h b/shared/net/application_layer/dns_daemon.h
index c13dcfd3..add7fa4e 100644
--- a/shared/net/application_layer/dns_daemon.h
+++ b/shared/net/application_layer/dns_daemon.h
@@ -8,7 +8,7 @@ extern "C" {
     void dns_set_pid(uint16_t p);
     socket_handle_t dns_socket_handle(void);
     uint16_t dns_get_pid(void);
-    void dns_deamon_entry(void);
+    int dns_deamon_entry(int argc, char* argv[]);
 #ifdef __cplusplus
 }
 #endif
diff --git a/shared/net/application_layer/sntp_daemon.c b/shared/net/application_layer/sntp_daemon.c
index 08a1fdfb..eacb061d 100644
--- a/shared/net/application_layer/sntp_daemon.c
+++ b/shared/net/application_layer/sntp_daemon.c
@@ -19,7 +19,8 @@ socket_handle_t sntp_socket_handle(void){ return g_sock; }
 #define SNTP_QUERY_TIMEOUT_MS 1200u
 #define SNTP_BOOTSTRAP_MAX_RETRY 5u
 
-void sntp_daemon_entry(void){
+int sntp_daemon_entry(int argc, char* argv[]){
+    (void)argc; (void)argv;
     g_pid_sntp = (uint16_t)get_current_proc_pid();
     g_sock = udp_socket_create(0, g_pid_sntp);
     sntp_set_pid(get_current_proc_pid());
@@ -45,4 +46,5 @@ void sntp_daemon_entry(void){
         sntp_poll_once(SNTP_QUERY_TIMEOUT_MS);
         sleep(SNTP_POLL_INTERVAL_MS);
     }
+    return 1;
 }
diff --git a/shared/net/application_layer/sntp_daemon.h b/shared/net/application_layer/sntp_daemon.h
index 0b6d1188..cdc7beb8 100644
--- a/shared/net/application_layer/sntp_daemon.h
+++ b/shared/net/application_layer/sntp_daemon.h
@@ -10,7 +10,7 @@ uint16_t sntp_get_pid(void);
 bool sntp_is_running(void);
 void sntp_set_pid(uint16_t p);
 socket_handle_t sntp_socket_handle(void);
-void sntp_daemon_entry(void);
+int sntp_daemon_entry(int argc, char* argv[]);
 
 #ifdef __cplusplus
 }
diff --git a/shared/net/link_layer/arp.c b/shared/net/link_layer/arp.c
index 97c5bbcb..8db4c6c4 100644
--- a/shared/net/link_layer/arp.c
+++ b/shared/net/link_layer/arp.c
@@ -144,8 +144,7 @@ bool arp_can_reply() {
 }
 
 
-int arp_daemon_entry(int argc, char* argv[])
-{
+int arp_daemon_entry(int argc, char* argv[]){
     (void)argc; (void)argv;
     arp_set_pid(get_current_proc_pid());
     while (1){
diff --git a/shared/net/link_layer/arp.h b/shared/net/link_layer/arp.h
index 0066a149..0543b2fe 100644
--- a/shared/net/link_layer/arp.h
+++ b/shared/net/link_layer/arp.h
@@ -43,7 +43,7 @@ void arp_table_init_static_defaults();
 
 void arp_send_request(uint32_t target_ip);
 
-int arp_daemon_entry();
+int arp_daemon_entry(int argc, char* argv[]);
 bool arp_can_reply();
 void arp_set_pid(uint16_t pid);
 uint16_t arp_get_pid();