From 9469ef10b673fc4623ace5bb06ee104122a3678c Mon Sep 17 00:00:00 2001
From: netadmin <netadmin@exa.local>
Date: Thu, 22 Oct 2026 20:45:13 +0300
Subject: [PATCH] version a0.0.1

---
 .gitignore                |    3 +
 Cargo.lock                | 1935 +++++++++++++++++++++++++++++++++++++
 Cargo.toml                |   23 +
 Cargo.toml.bak            |   23 +
 src-bak/main.rs           |  179 ++++
 src-bak/mdns.rs           |   60 ++
 src-bak/models.rs         |  123 +++
 src-bak/p2p.rs            |   81 ++
 src-bak/static/index.html |  261 +++++
 src-bak/tls.rs            |  138 +++
 src-bak/ui.rs             |  165 ++++
 src/discovery.rs          |  113 +++
 src/main.rs               |  180 ++++
 src/mdns.rs               |   60 ++
 src/models.rs             |  119 +++
 src/p2p.rs                |   91 ++
 src/static/index.html     |  293 ++++++
 src/tls.rs                |  215 +++++
 src/ui.rs                 |  219 +++++
 19 files changed, 4281 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 Cargo.toml.bak
 create mode 100644 src-bak/main.rs
 create mode 100644 src-bak/mdns.rs
 create mode 100644 src-bak/models.rs
 create mode 100644 src-bak/p2p.rs
 create mode 100644 src-bak/static/index.html
 create mode 100644 src-bak/tls.rs
 create mode 100644 src-bak/ui.rs
 create mode 100644 src/discovery.rs
 create mode 100644 src/main.rs
 create mode 100644 src/mdns.rs
 create mode 100644 src/models.rs
 create mode 100644 src/p2p.rs
 create mode 100644 src/static/index.html
 create mode 100644 src/tls.rs
 create mode 100644 src/ui.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..42b9d94
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+++ b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..1352532
--- /dev/null
+++ b/Cargo.lock
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+ "zerofrom",
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+ "synstructure",
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+ "syn 3.0.9",
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+]
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+ "proc-macro2",
+ "quote",
+ "syn 3.0.9",
+]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..15e3d35
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,23 @@
+[package]
+name = "ramshare_ui"
+version = "0.2.0"
+edition = "2021"
+
+[dependencies]
+tokio = { version = "1.40", features = ["full"] }
+axum = { version = "0.7" }
+axum-server = { version = "0.7", features = ["tls-rustls"] }
+bytes = "1.7"
+socket2 = "0.5"
+
+reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "json"] }
+
+rcgen = "0.13"
+rustls = { version = "0.23", default-features = false, features = ["ring", "std", "tls12"] }
+sha2 = "0.10"
+hex = "0.4"
+
+local-ip-address = "0.6"
+
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
diff --git a/Cargo.toml.bak b/Cargo.toml.bak
new file mode 100644
index 0000000..3eb50b4
--- /dev/null
+++ b/Cargo.toml.bak
@@ -0,0 +1,23 @@
+[package]
+name = "ramshare_ui"
+version = "0.2.0"
+edition = "2021"
+
+[dependencies]
+tokio = { version = "1.40", features = ["full"] }
+axum = { version = "0.7" }
+axum-server = { version = "0.7", features = ["tls-rustls"] }
+bytes = "1.7"
+
+reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "json"] }
+
+rcgen = "0.13"
+rustls = { version = "0.23", default-features = false, features = ["ring", "std", "tls12"] }
+sha2 = "0.10"
+hex = "0.4"
+
+mdns-sd = "0.11"
+local-ip-address = "0.6"
+
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
diff --git a/src-bak/main.rs b/src-bak/main.rs
new file mode 100644
index 0000000..0022fe1
--- /dev/null
+++ b/src-bak/main.rs
@@ -0,0 +1,179 @@
+mod mdns;
+mod models;
+mod p2p;
+mod tls;
+mod ui;
+
+use axum::{
+    extract::DefaultBodyLimit,
+    routing::{get, post},
+    Router,
+};
+use axum_server::tls_rustls::RustlsConfig;
+use local_ip_address::local_ip;
+use models::{AppState, MAX_PAYLOAD_SIZE, MAX_RAM_TEXTS, MEDIA_DIR};
+use std::{
+    collections::{HashMap, VecDeque},
+    net::SocketAddr,
+    sync::{Arc, RwLock},
+};
+
+#[tokio::main]
+async fn main() {
+    // 0. Регистрация глобального CryptoProvider (ring) для rustls 0.23+
+    let _ = rustls::crypto::ring::default_provider().install_default();
+
+    let args: Vec<String> = std::env::args().collect();
+
+    // Значения по умолчанию
+    let mut device_name = "My-Device".to_string();
+    let mut p2p_port: u16 = 8443;
+    let mut ui_port: u16 = 8080;
+    let mut custom_ip: Option<String> = None;
+
+    // Парсинг как именованных флагов (--ip, --name), так и позиционных аргументов
+    let mut i = 1;
+    let mut positional_idx = 0;
+    while i < args.len() {
+        match args[i].as_str() {
+            "--ip" => {
+                if i + 1 < args.len() {
+                    custom_ip = Some(args[i + 1].clone());
+                    i += 1;
+                }
+            }
+            "--name" => {
+                if i + 1 < args.len() {
+                    device_name = args[i + 1].clone();
+                    i += 1;
+                }
+            }
+            "--p2p-port" => {
+                if i + 1 < args.len() {
+                    if let Ok(p) = args[i + 1].parse() {
+                        p2p_port = p;
+                    }
+                    i += 1;
+                }
+            }
+            "--ui-port" => {
+                if i + 1 < args.len() {
+                    if let Ok(p) = args[i + 1].parse() {
+                        ui_port = p;
+                    }
+                    i += 1;
+                }
+            }
+            arg if !arg.starts_with("--") => {
+                match positional_idx {
+                    0 => device_name = arg.to_string(),
+                    1 => {
+                        if let Ok(p) = arg.parse() {
+                            p2p_port = p;
+                        }
+                    }
+                    2 => {
+                        if let Ok(p) = arg.parse() {
+                            ui_port = p;
+                        }
+                    }
+                    3 => custom_ip = Some(arg.to_string()),
+                    _ => {}
+                }
+                positional_idx += 1;
+            }
+            _ => {}
+        }
+        i += 1;
+    }
+
+    // Определение адреса привязки (bind_ip) и сетевого IP для сертификата/mDNS
+    let (bind_ip, my_ip) = match custom_ip {
+        Some(ip) => {
+            if ip == "0.0.0.0" {
+                let detected = local_ip()
+                    .map(|addr| addr.to_string())
+                    .unwrap_or_else(|_| "127.0.0.1".to_string());
+                ("0.0.0.0".to_string(), detected)
+            } else {
+                (ip.clone(), ip)
+            }
+        }
+        None => {
+            let detected = local_ip().expect("Не удалось определить локальный IP").to_string();
+            ("0.0.0.0".to_string(), detected)
+        }
+    };
+
+    tokio::fs::create_dir_all(MEDIA_DIR)
+        .await
+        .expect("Не удалось создать папку received_media на диске");
+
+    // 1. Генерация сертификата в ОЗУ под выбранный IP и настройка HTTPS-клиента
+    let (cert_der, key_der, my_fingerprint) = tls::generate_in_memory_cert(&my_ip);
+    let trusted_fingerprints = Arc::new(RwLock::new(HashMap::new()));
+    let http_client = tls::build_pinned_http_client(trusted_fingerprints.clone());
+
+    let state = Arc::new(AppState {
+        device_name: device_name.clone(),
+        my_ip: my_ip.clone(),
+        p2p_port,
+        my_fingerprint: my_fingerprint.clone(),
+        ram_texts: RwLock::new(VecDeque::with_capacity(MAX_RAM_TEXTS)),
+        disk_media: RwLock::new(VecDeque::new()),
+        peers: RwLock::new(HashMap::new()),
+        trusted_fingerprints,
+        http_client,
+    });
+
+    // 2. Запуск mDNS-обнаружения
+    mdns::start_mdns_service(state.clone());
+
+    // 3. Запуск внешнего P2P HTTPS-сервера на указанном IP
+    let tls_config = RustlsConfig::from_der(vec![cert_der], key_der)
+        .await
+        .expect("Ошибка конфигурации TLS");
+
+    let p2p_router = Router::new()
+        .route("/p2p/text", post(p2p::p2p_receive_text))
+        .route("/p2p/media", post(p2p::p2p_receive_media))
+        .layer(DefaultBodyLimit::max(MAX_PAYLOAD_SIZE))
+        .with_state(state.clone());
+
+    let p2p_addr: SocketAddr = format!("{}:{}", bind_ip, p2p_port)
+        .parse()
+        .unwrap_or_else(|_| panic!("Некорректный IP или порт: {}:{}", bind_ip, p2p_port));
+
+    tokio::spawn(async move {
+        axum_server::bind_rustls(p2p_addr, tls_config)
+            .serve(p2p_router.into_make_service())
+            .await
+            .expect("Ошибка P2P HTTPS-сервера");
+    });
+
+    // 4. Запуск локального UI-сервера (127.0.0.1)
+    let ui_router = Router::new()
+        .route("/", get(ui::ui_index))
+        .route("/ui/state", get(ui::ui_get_state))
+        .route("/ui/trust", post(ui::ui_trust_peer))
+        .route("/ui/clear-ram", post(ui::ui_clear_ram))
+        .route("/ui/send-text", post(ui::ui_send_text))
+        .route("/ui/send-media", post(ui::ui_send_media))
+        .route("/ui/files/:filename", get(ui::ui_serve_saved_file))
+        .layer(DefaultBodyLimit::max(MAX_PAYLOAD_SIZE))
+        .with_state(state);
+
+    let ui_addr: SocketAddr = format!("127.0.0.1:{}", ui_port).parse().unwrap();
+    println!("==============================================================");
+    println!(" Устройство:                   {}", device_name);
+    println!(" P2P сокет (порт открыт на):   https://{}:{}", bind_ip, p2p_port);
+    println!(" Сетевой IP (mDNS / TLS SAN):  {}", my_ip);
+    println!(" КОД СВЕРКИ СЕРТИФИКАТА (PIN): [ {} ]", &my_fingerprint[..8].to_uppercase());
+    println!(" Папка для медиа на диске:     ./{}/", MEDIA_DIR);
+    println!("--------------------------------------------------------------");
+    println!(" ОТКРОЙТЕ ИНТЕРФЕЙС В БРАУЗЕРЕ: http://127.0.0.1:{}", ui_port);
+    println!("==============================================================");
+
+    let listener = tokio::net::TcpListener::bind(ui_addr).await.unwrap();
+    axum::serve(listener, ui_router).await.unwrap();
+}
diff --git a/src-bak/mdns.rs b/src-bak/mdns.rs
new file mode 100644
index 0000000..b4904db
--- /dev/null
+++ b/src-bak/mdns.rs
@@ -0,0 +1,60 @@
+use crate::models::{AppState, PeerNode, SERVICE_TYPE};
+use mdns_sd::{ServiceDaemon, ServiceEvent, ServiceInfo};
+use std::sync::Arc;
+
+pub fn start_mdns_service(state: Arc<AppState>) {
+    let mdns = ServiceDaemon::new().expect("Не удалось запустить mDNS");
+
+    let instance_name = format!("{}_{}", state.device_name, &state.my_fingerprint[..6]);
+    let host_name = format!("{}.local.", instance_name);
+    let properties = [
+        ("fp", state.my_fingerprint.as_str()),
+        ("name", state.device_name.as_str()),
+    ];
+
+    let service_info = ServiceInfo::new(
+        SERVICE_TYPE,
+        &instance_name,
+        &host_name,
+        &state.my_ip,
+        state.p2p_port,
+        &properties[..],
+    )
+    .expect("Ошибка создания mDNS записи");
+
+    mdns.register(service_info).expect("Ошибка регистрации mDNS");
+
+    let receiver = mdns.browse(SERVICE_TYPE).expect("Ошибка mDNS browse");
+    tokio::spawn(async move {
+        while let Ok(event) = receiver.recv_async().await {
+            if let ServiceEvent::ServiceResolved(info) = event {
+                let fp = info
+                    .get_property_val_str("fp")
+                    .unwrap_or_default()
+                    .to_string();
+                let name = info
+                    .get_property_val_str("name")
+                    .unwrap_or("Unknown")
+                    .to_string();
+
+                if fp == state.my_fingerprint || fp.len() < 8 {
+                    continue;
+                }
+
+                if let Some(ip) = info.get_addresses().iter().next() {
+                    let ip_str = ip.to_string();
+                    let pin_code = fp[..8].to_uppercase();
+                    let peer = PeerNode {
+                        name,
+                        ip: ip_str.clone(),
+                        port: info.get_port(),
+                        fingerprint: fp,
+                        pin_code,
+                        verified: false,
+                    };
+                    state.peers.write().unwrap().insert(ip_str, peer);
+                }
+            }
+        }
+    });
+}
diff --git a/src-bak/models.rs b/src-bak/models.rs
new file mode 100644
index 0000000..2637011
--- /dev/null
+++ b/src-bak/models.rs
@@ -0,0 +1,123 @@
+use serde::{Deserialize, Serialize};
+use std::{
+    collections::{HashMap, VecDeque},
+    sync::{Arc, RwLock},
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+/// Лимит одного передаваемого медиафайла (200 МБ)
+pub const MAX_PAYLOAD_SIZE: usize = 200 * 1024 * 1024;
+/// Максимум текстовых сообщений, хранимых в ОЗУ
+pub const MAX_RAM_TEXTS: usize = 50;
+/// Папка на диске для сохранения входящего медиаконтента
+pub const MEDIA_DIR: &str = "received_media";
+/// Тип сервиса для обнаружения через mDNS
+pub const SERVICE_TYPE: &str = "_ramshare._tcp.local.";
+
+/// Текстовое сообщение (хранится ТОЛЬКО в ОЗУ)
+#[derive(Clone, Serialize, Deserialize)]
+pub struct TextItem {
+    pub sender: String,
+    pub text: String,
+    pub timestamp: u64,
+}
+
+/// Метаданные медиафайла (сам файл сохраняется НА ДИСК)
+#[derive(Clone, Serialize, Deserialize)]
+pub struct MediaItem {
+    pub sender: String,
+    pub filename: String,
+    pub saved_path: String,
+    pub mime: String,
+    pub size: usize,
+    pub timestamp: u64,
+}
+
+/// Устройство в локальной сети, найденное через mDNS
+#[derive(Clone, Serialize, Deserialize)]
+pub struct PeerNode {
+    pub name: String,
+    pub ip: String,
+    pub port: u16,
+    pub fingerprint: String,
+    pub pin_code: String,
+    pub verified: bool,
+}
+
+/// Глобальное состояние приложения
+pub struct AppState {
+    pub device_name: String,
+    pub my_ip: String,
+    pub p2p_port: u16,
+    pub my_fingerprint: String,
+    pub ram_texts: RwLock<VecDeque<TextItem>>,
+    pub disk_media: RwLock<VecDeque<MediaItem>>,
+    pub peers: RwLock<HashMap<String, PeerNode>>,
+    pub trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+    pub http_client: reqwest::Client,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct IncomingTextPayload {
+    pub sender: String,
+    pub text: String,
+}
+
+#[derive(Deserialize)]
+pub struct UiSendTextRequest {
+    pub target_ip: String,
+    pub text: String,
+}
+
+#[derive(Deserialize)]
+pub struct UiTrustRequest {
+    pub target_ip: String,
+    pub trust: bool,
+}
+
+pub fn now_sec() -> u64 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
+}
+
+/// Декодирование URL-encoded имени файла (для поддержки кириллицы и пробелов)
+pub fn url_decode(input: &str) -> String {
+    let mut bytes = Vec::with_capacity(input.len());
+    let mut chars = input.as_bytes().iter().copied();
+    while let Some(b) = chars.next() {
+        if b == b'%' {
+            if let (Some(c1), Some(c2)) = (chars.next(), chars.next()) {
+                if let Ok(decoded) = u8::from_str_radix(&format!("{}{}", c1 as char, c2 as char), 16)
+                {
+                    bytes.push(decoded);
+                    continue;
+                }
+            }
+        } else if b == b'+' {
+            bytes.push(b' ');
+        } else {
+            bytes.push(b);
+        }
+    }
+    String::from_utf8_lossy(&bytes).into_owned()
+}
+
+/// Защита от Path Traversal при сохранении медиа на диск
+pub fn sanitize_filename(name: &str) -> String {
+    let decoded = url_decode(name);
+    let clean: String = decoded
+        .chars()
+        .map(|c| match c {
+            '/' | '\\' | ':' | '*' | '?' | '"' | '<' | '>' | '|' | '\0' => '_',
+            _ => c,
+        })
+        .collect();
+    let trimmed = clean.trim_matches('.').trim();
+    if trimmed.is_empty() {
+        "media_file.bin".to_string()
+    } else {
+        trimmed.to_string()
+    }
+}
diff --git a/src-bak/p2p.rs b/src-bak/p2p.rs
new file mode 100644
index 0000000..1727721
--- /dev/null
+++ b/src-bak/p2p.rs
@@ -0,0 +1,81 @@
+use crate::models::{
+    now_sec, sanitize_filename, url_decode, AppState, IncomingTextPayload, MediaItem, TextItem,
+    MAX_RAM_TEXTS, MEDIA_DIR,
+};
+use axum::{
+    body::Bytes,
+    extract::State,
+    http::{header, HeaderMap, StatusCode},
+    Json,
+};
+use std::{path::PathBuf, sync::Arc};
+
+/// Прием текста от другого устройства -> сохраняется СТРОГО В ОЗУ
+pub async fn p2p_receive_text(
+    State(state): State<Arc<AppState>>,
+    Json(payload): Json<IncomingTextPayload>,
+) -> StatusCode {
+    let mut ram_texts = state.ram_texts.write().unwrap();
+    if ram_texts.len() >= MAX_RAM_TEXTS {
+        ram_texts.pop_back();
+    }
+    ram_texts.push_front(TextItem {
+        sender: payload.sender,
+        text: payload.text,
+        timestamp: now_sec(),
+    });
+    StatusCode::OK
+}
+
+/// Прием медиаконтента от другого устройства -> сохраняется НА ДИСК
+pub async fn p2p_receive_media(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    body: Bytes,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let sender = headers
+        .get("X-Sender")
+        .and_then(|v| v.to_str().ok())
+        .map(url_decode)
+        .unwrap_or_else(|| "Unknown".to_string());
+
+    let raw_filename = headers
+        .get("X-Filename")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("file.bin");
+
+    let mime = headers
+        .get(header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/octet-stream")
+        .to_string();
+
+    tokio::fs::create_dir_all(MEDIA_DIR)
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let safe_name = sanitize_filename(raw_filename);
+    let final_filename = format!("{}_{}", now_sec(), safe_name);
+    let file_path = PathBuf::from(MEDIA_DIR).join(&final_filename);
+
+    tokio::fs::write(&file_path, &body)
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let abs_path = std::fs::canonicalize(&file_path)
+        .unwrap_or_else(|_| file_path.clone())
+        .display()
+        .to_string();
+
+    let mut media_list = state.disk_media.write().unwrap();
+    media_list.push_front(MediaItem {
+        sender,
+        filename: final_filename,
+        saved_path: abs_path,
+        mime,
+        size: body.len(),
+        timestamp: now_sec(),
+    });
+
+    Ok(StatusCode::OK)
+}
diff --git a/src-bak/static/index.html b/src-bak/static/index.html
new file mode 100644
index 0000000..6c190f6
--- /dev/null
+++ b/src-bak/static/index.html
@@ -0,0 +1,261 @@
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>LAN Share — Текст в ОЗУ / Медиа на Диск</title>
+<style>
+  :root { --bg: #0f172a; --card: #1e293b; --border: #334155; --accent: #3b82f6; --green: #10b981; --red: #ef4444; --text: #f8fafc; --muted: #94a3b8; }
+  * { box-sizing: border-box; font-family: system-ui, -apple-system, sans-serif; }
+  body { margin: 0; padding: 20px; background: var(--bg); color: var(--text); }
+  .container { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
+  @media (max-width: 800px) { .container { grid-template-columns: 1fr; } }
+  .header { grid-column: 1 / -1; background: var(--card); border: 1px solid var(--border); padding: 16px 20px; border-radius: 12px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
+  .pin-badge { background: #1d4ed8; padding: 6px 14px; border-radius: 8px; font-weight: 700; letter-spacing: 1px; font-family: monospace; font-size: 1.1rem; }
+  .card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
+  h2 { margin: 0; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
+  .tag { font-size: 0.75rem; padding: 3px 8px; border-radius: 6px; font-weight: 600; }
+  .tag-ram { background: rgba(16, 185, 129, 0.2); color: #34d399; }
+  .tag-disk { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
+  select, textarea, input[type="file"] { width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 10px; font-size: 0.95rem; }
+  textarea { resize: vertical; min-height: 80px; }
+  button { background: var(--accent); color: white; border: none; border-radius: 8px; padding: 10px 16px; font-weight: 600; cursor: pointer; transition: opacity 0.15s; }
+  button:hover { opacity: 0.9; }
+  button.btn-green { background: var(--green); }
+  button.btn-red { background: var(--red); }
+  button.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
+  .peer-item, .msg-item { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; display: flex; justify-content: space-between; align-items: center; gap: 10px; }
+  .msg-item { flex-direction: column; align-items: flex-start; }
+  .msg-meta { width: 100%; display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--muted); }
+  .msg-text { font-size: 0.95rem; white-space: pre-wrap; word-break: break-word; width: 100%; margin: 4px 0; }
+  .path-box { font-family: monospace; font-size: 0.78rem; color: #93c5fd; background: rgba(59,130,246,0.1); padding: 4px 8px; border-radius: 4px; word-break: break-all; }
+  .preview-img { max-width: 100%; max-height: 180px; border-radius: 6px; margin-top: 6px; }
+  #status { grid-column: 1 / -1; padding: 10px 16px; border-radius: 8px; display: none; font-weight: 500; }
+</style>
+</head>
+<body>
+<div class="container">
+  <div class="header">
+    <div>
+      <div style="font-size: 1.2rem; font-weight: 700;" id="my-name">Загрузка...</div>
+      <div style="font-size: 0.85rem; color: var(--muted);" id="my-ip"></div>
+    </div>
+    <div>
+      <span style="font-size: 0.85rem; color: var(--muted); margin-right: 8px;">Код сверки сертификата (PIN):</span>
+      <span class="pin-badge" id="my-pin">--------</span>
+    </div>
+  </div>
+
+  <div id="status"></div>
+
+  <div class="card">
+    <h2>1. Устройства в сети (mDNS) <span class="tag tag-disk">TLS Pinning</span></h2>
+    <div id="peers-list" style="display:flex; flex-direction:column; gap:8px;">
+      <div style="color:var(--muted); font-size:0.9rem;">Поиск устройств...</div>
+    </div>
+  </div>
+
+  <div class="card">
+    <h2>2. Отправка данных</h2>
+    <label style="font-size:0.85rem; color:var(--muted);">Получатель (должен быть заверен):</label>
+    <select id="target-peer"><option value="">-- Выберите устройство --</option></select>
+
+    <textarea id="text-input" placeholder="Введите текст (Enter — отправить, Shift+Enter — новая строка)..."></textarea>
+    <button onclick="sendText()">Отправить текст в ОЗУ</button>
+
+    <hr style="border:0; border-top:1px solid var(--border); width:100%; margin: 4px 0;">
+    <input type="file" id="media-input">
+    <button class="btn-green" onclick="sendMedia()">Отправить медиа на диск получателя</button>
+  </div>
+
+  <div class="card">
+    <h2>
+      <span>Входящий текст <span class="tag tag-ram">ТОЛЬКО В ОЗУ</span></span>
+      <button class="btn-red btn-sm" onclick="clearRam()">Очистить ОЗУ</button>
+    </h2>
+    <div id="ram-texts" style="display:flex; flex-direction:column; gap:10px; max-height: 400px; overflow-y: auto;"></div>
+  </div>
+
+  <div class="card">
+    <h2>Входящие медиафайлы <span class="tag tag-disk">НА ДИСКЕ (./received_media)</span></h2>
+    <div id="disk-media" style="display:flex; flex-direction:column; gap:10px; max-height: 400px; overflow-y: auto;"></div>
+  </div>
+</div>
+
+<script>
+let knownPeersKey = "";
+
+function showStatus(msg, isError = false) {
+  const el = document.getElementById('status');
+  el.style.display = 'block';
+  el.style.background = isError ? 'rgba(239, 68, 68, 0.2)' : 'rgba(16, 185, 129, 0.2)';
+  el.style.border = `1px solid ${isError ? '#ef4444' : '#10b981'}`;
+  el.textContent = msg;
+  setTimeout(() => { el.style.display = 'none'; }, 4000);
+}
+
+async function fetchState() {
+  try {
+    const res = await fetch('/ui/state');
+    const data = await res.json();
+
+    document.getElementById('my-name').textContent = `Устройство: ${data.device_name}`;
+    document.getElementById('my-ip').textContent = `HTTPS P2P: ${data.my_ip}:${data.p2p_port} | SHA-256: ${data.my_fingerprint.slice(0, 24)}...`;
+    document.getElementById('my-pin').textContent = data.my_pin;
+
+    const peersContainer = document.getElementById('peers-list');
+    if (data.peers.length === 0) {
+      peersContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Устройства в локальной сети пока не обнаружены</div>';
+    } else {
+      peersContainer.innerHTML = data.peers.map(p => `
+        <div class="peer-item">
+          <div>
+            <div style="font-weight:600;">${escapeHtml(p.name)} <span style="color:var(--muted); font-size:0.85rem;">(${p.ip}:${p.port})</span></div>
+            <div style="font-size:0.8rem; color:var(--muted); font-family:monospace;">PIN: <b style="color:#fff;">[${p.pin_code}]</b> | Статус: ${p.verified ? '<span style="color:#34d399;">Заверен</span>' : '<span style="color:#f87171;">Не заверен</span>'}</div>
+          </div>
+          <button class="btn-sm ${p.verified ? 'btn-red' : 'btn-green'}" onclick="toggleTrust('${p.ip}', ${!p.verified})">
+            ${p.verified ? 'Отозвать' : 'Заверить'}
+          </button>
+        </div>
+      `).join('');
+    }
+
+    const currentSelectKey = data.peers.map(p => `${p.ip}:${p.verified}`).join('|');
+    if (currentSelectKey !== knownPeersKey) {
+      knownPeersKey = currentSelectKey;
+      const select = document.getElementById('target-peer');
+      const prevVal = select.value;
+      select.innerHTML = '<option value="">-- Выберите устройство --</option>' +
+        data.peers.map(p => `<option value="${p.ip}">${escapeHtml(p.name)} (${p.ip}) ${p.verified ? '✓' : '🔒 [Не заверен]'}</option>`).join('');
+      if (prevVal) select.value = prevVal;
+    }
+
+    const textsContainer = document.getElementById('ram-texts');
+    if (data.texts.length === 0) {
+      textsContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Буфер ОЗУ пуст</div>';
+    } else {
+      textsContainer.innerHTML = data.texts.map(t => `
+        <div class="msg-item">
+          <div class="msg-meta">
+            <span>От: <b>${escapeHtml(t.sender)}</b></span>
+            <button class="btn-sm" onclick="copyText(${JSON.stringify(t.text).replace(/"/g, '&quot;')})">Скопировать</button>
+          </div>
+          <div class="msg-text">${escapeHtml(t.text)}</div>
+        </div>
+      `).join('');
+    }
+
+    const mediaContainer = document.getElementById('disk-media');
+    if (data.media.length === 0) {
+      mediaContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Нет сохраненных медиафайлов</div>';
+    } else {
+      mediaContainer.innerHTML = data.media.map(m => {
+        const isImg = m.mime.startsWith('image/');
+        const fileUrl = `/ui/files/${encodeURIComponent(m.filename)}`;
+        return `
+          <div class="msg-item">
+            <div class="msg-meta">
+              <span>От: <b>${escapeHtml(m.sender)}</b></span>
+              <span>${(m.size / 1024).toFixed(1)} КБ</span>
+            </div>
+            <div style="font-weight:600; margin:2px 0;">
+              <a href="${fileUrl}" target="_blank" style="color:#60a5fa; text-decoration:none;">${escapeHtml(m.filename)} ↗</a>
+            </div>
+            <div class="path-box">Диск: ${escapeHtml(m.saved_path)}</div>
+            ${isImg ? `<img src="${fileUrl}" class="preview-img">` : ''}
+          </div>
+        `;
+      }).join('');
+    }
+  } catch (e) {}
+}
+
+async function toggleTrust(ip, trust) {
+  const res = await fetch('/ui/trust', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ target_ip: ip, trust })
+  });
+  if (res.ok) {
+    showStatus(trust ? `Сертификат узла ${ip} заверен в ОЗУ` : `Доверие узлу ${ip} отозвано`);
+    fetchState();
+  }
+}
+
+async function sendText() {
+  const target_ip = document.getElementById('target-peer').value;
+  const input = document.getElementById('text-input');
+  const text = input.value.trim();
+  if (!target_ip) return showStatus('Выберите устройство-получатель!', true);
+  if (!text) return showStatus('Введите текст для отправки!', true);
+
+  const res = await fetch('/ui/send-text', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ target_ip, text })
+  });
+
+  if (res.ok) {
+    input.value = '';
+    showStatus(`Текст доставлен в ОЗУ узла ${target_ip}`);
+  } else {
+    const err = await res.text();
+    showStatus(err, true);
+  }
+}
+
+async function sendMedia() {
+  const target_ip = document.getElementById('target-peer').value;
+  const fileInput = document.getElementById('media-input');
+  if (!target_ip) return showStatus('Выберите устройство-получатель!', true);
+  if (!fileInput.files.length) return showStatus('Выберите медиафайл!', true);
+
+  const file = fileInput.files[0];
+  showStatus(`Отправка файла "${file.name}"...`);
+
+  const res = await fetch('/ui/send-media', {
+    method: 'POST',
+    headers: {
+      'X-Target-Ip': target_ip,
+      'X-Filename': encodeURIComponent(file.name),
+      'Content-Type': file.type || 'application/octet-stream'
+    },
+    body: file
+  });
+
+  if (res.ok) {
+    fileInput.value = '';
+    showStatus(`Файл "${file.name}" сохранен на диске узла ${target_ip}`);
+  } else {
+    const err = await res.text();
+    showStatus(err, true);
+  }
+}
+
+async function clearRam() {
+  await fetch('/ui/clear-ram', { method: 'POST' });
+  fetchState();
+  showStatus('Буфер текстовых сообщений в ОЗУ очищен');
+}
+
+function copyText(text) {
+  navigator.clipboard.writeText(text);
+  showStatus('Текст скопирован в буфер обмена');
+}
+
+function escapeHtml(str) {
+  return String(str).replace(/[&<>"']/g, s => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[s]));
+}
+
+document.getElementById('text-input').addEventListener('keydown', (e) => {
+  if (e.key === 'Enter' && !e.shiftKey) {
+    e.preventDefault();
+    sendText();
+  }
+});
+
+setInterval(fetchState, 1500);
+fetchState();
+</script>
+</body>
+</html>
diff --git a/src-bak/tls.rs b/src-bak/tls.rs
new file mode 100644
index 0000000..ffa8c02
--- /dev/null
+++ b/src-bak/tls.rs
@@ -0,0 +1,138 @@
+use rcgen::{generate_simple_self_signed, CertifiedKey};
+use rustls::{
+    client::danger::{HandshakeSignatureValid, ServerCertVerified, ServerCertVerifier},
+    crypto::{verify_tls12_signature, verify_tls13_signature, CryptoProvider},
+    pki_types::{CertificateDer, ServerName, UnixTime},
+    ClientConfig, DigitallySignedStruct, Error as TlsError, SignatureScheme,
+};
+use sha2::{Digest, Sha256};
+use std::{
+    collections::HashMap,
+    sync::{Arc, RwLock},
+    time::Duration,
+};
+
+#[derive(Debug)]
+pub struct PinnedCertVerifier {
+    trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+    provider: Arc<CryptoProvider>,
+}
+
+impl PinnedCertVerifier {
+    pub fn new(trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>) -> Self {
+        Self {
+            trusted_fingerprints,
+            provider: Arc::new(rustls::crypto::ring::default_provider()),
+        }
+    }
+
+    fn cert_fingerprint(cert: &CertificateDer<'_>) -> String {
+        let mut hasher = Sha256::new();
+        hasher.update(cert.as_ref());
+        hex::encode(hasher.finalize())
+    }
+}
+
+impl ServerCertVerifier for PinnedCertVerifier {
+    fn verify_server_cert(
+        &self,
+        end_entity: &CertificateDer<'_>,
+        _intermediates: &[CertificateDer<'_>],
+        server_name: &ServerName<'_>,
+        _ocsp_response: &[u8],
+        _now: UnixTime,
+    ) -> Result<ServerCertVerified, TlsError> {
+        let actual_fp = Self::cert_fingerprint(end_entity);
+        let host = match server_name {
+            ServerName::DnsName(name) => name.as_ref().to_string(),
+            ServerName::IpAddress(ip) => std::net::IpAddr::from(*ip).to_string(),
+            _ => return Err(TlsError::General("Неподдерживаемое имя узла".into())),
+        };
+
+        let trusted = self.trusted_fingerprints.read().unwrap();
+        match trusted.get(&host) {
+            Some(expected_fp) if expected_fp.eq_ignore_ascii_case(&actual_fp) => {
+                Ok(ServerCertVerified::assertion())
+            }
+            Some(_) => Err(TlsError::General(format!(
+                "ВНИМАНИЕ: Сертификат узла {} не совпадает с заверенным!",
+                host
+            ))),
+            None => Err(TlsError::General(format!(
+                "Узел {} не заверен! Нажмите «Заверить» в списке устройств.",
+                host
+            ))),
+        }
+    }
+
+    fn verify_tls12_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls12_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn verify_tls13_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls13_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn supported_verify_schemes(&self) -> Vec<SignatureScheme> {
+        self.provider
+            .signature_verification_algorithms
+            .supported_schemes()
+    }
+}
+
+/// Генерирует самоподписанный сертификат и приватный ключ в ОЗУ
+pub fn generate_in_memory_cert(ip: &str) -> (Vec<u8>, Vec<u8>, String) {
+    let san = vec!["localhost".to_string(), ip.to_string()];
+    let CertifiedKey { cert, key_pair } =
+        generate_simple_self_signed(san).expect("Ошибка генерации сертификата");
+
+    let cert_der = cert.der().to_vec();
+    let key_der = key_pair.serialize_der();
+
+    let mut hasher = Sha256::new();
+    hasher.update(&cert_der);
+    let fingerprint = hex::encode(hasher.finalize());
+
+    (cert_der, key_der, fingerprint)
+}
+
+/// Создает преднастроенный HTTPS-клиент с кастомным верификатором
+pub fn build_pinned_http_client(
+    trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+) -> reqwest::Client {
+    let verifier = Arc::new(PinnedCertVerifier::new(trusted_fingerprints));
+    let rustls_client_config = ClientConfig::builder_with_provider(Arc::new(
+        rustls::crypto::ring::default_provider(),
+    ))
+    .with_safe_default_protocol_versions()
+    .unwrap()
+    .dangerous()
+    .with_custom_certificate_verifier(verifier)
+    .with_no_client_auth();
+
+    reqwest::Client::builder()
+        .use_preconfigured_tls(rustls_client_config)
+        .timeout(Duration::from_secs(30))
+        .build()
+        .expect("Ошибка создания HTTPS-клиента")
+}
diff --git a/src-bak/ui.rs b/src-bak/ui.rs
new file mode 100644
index 0000000..2c76b14
--- /dev/null
+++ b/src-bak/ui.rs
@@ -0,0 +1,165 @@
+use crate::models::{
+    sanitize_filename, AppState, IncomingTextPayload, MediaItem, PeerNode, TextItem,
+    UiSendTextRequest, UiTrustRequest, MEDIA_DIR,
+};
+use axum::{
+    body::Bytes,
+    extract::{Path, State},
+    http::{header, HeaderMap, StatusCode},
+    response::{Html, IntoResponse},
+    Json,
+};
+use std::{path::PathBuf, sync::Arc};
+
+/// Вшиваем внешний файл src/static/index.html в бинарник на этапе компиляции
+const INDEX_HTML: &str = include_str!("static/index.html");
+
+pub async fn ui_index() -> Html<&'static str> {
+    Html(INDEX_HTML)
+}
+
+pub async fn ui_get_state(State(state): State<Arc<AppState>>) -> Json<serde_json::Value> {
+    let trusted_map = state.trusted_fingerprints.read().unwrap();
+    let mut peers_list: Vec<PeerNode> = state
+        .peers
+        .read()
+        .unwrap()
+        .values()
+        .cloned()
+        .map(|mut p| {
+            p.verified = trusted_map
+                .get(&p.ip)
+                .map(|fp| fp.eq_ignore_ascii_case(&p.fingerprint))
+                .unwrap_or(false);
+            p
+        })
+        .collect();
+    peers_list.sort_by(|a, b| a.name.cmp(&b.name));
+
+    let texts: Vec<TextItem> = state.ram_texts.read().unwrap().iter().cloned().collect();
+    let media: Vec<MediaItem> = state.disk_media.read().unwrap().iter().cloned().collect();
+
+    Json(serde_json::json!({
+        "device_name": state.device_name,
+        "my_ip": state.my_ip,
+        "p2p_port": state.p2p_port,
+        "my_fingerprint": state.my_fingerprint,
+        "my_pin": state.my_fingerprint[..8].to_uppercase(),
+        "peers": peers_list,
+        "texts": texts,
+        "media": media
+    }))
+}
+
+pub async fn ui_trust_peer(
+    State(state): State<Arc<AppState>>,
+    Json(req): Json<UiTrustRequest>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let peers = state.peers.read().unwrap();
+    let peer = peers
+        .get(&req.target_ip)
+        .ok_or((StatusCode::NOT_FOUND, "Узел не найден".to_string()))?;
+
+    let mut trusted = state.trusted_fingerprints.write().unwrap();
+    if req.trust {
+        trusted.insert(peer.ip.clone(), peer.fingerprint.clone());
+    } else {
+        trusted.remove(&peer.ip);
+    }
+    Ok(StatusCode::OK)
+}
+
+pub async fn ui_clear_ram(State(state): State<Arc<AppState>>) -> StatusCode {
+    state.ram_texts.write().unwrap().clear();
+    StatusCode::OK
+}
+
+pub async fn ui_send_text(
+    State(state): State<Arc<AppState>>,
+    Json(req): Json<UiSendTextRequest>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let port = state
+        .peers
+        .read()
+        .unwrap()
+        .get(&req.target_ip)
+        .map(|p| p.port)
+        .unwrap_or(state.p2p_port);
+
+    let url = format!("https://{}:{}/p2p/text", req.target_ip, port);
+    let payload = IncomingTextPayload {
+        sender: state.device_name.clone(),
+        text: req.text,
+    };
+
+    let resp = state
+        .http_client
+        .post(&url)
+        .json(&payload)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::BAD_GATEWAY, format!("Ошибка TLS/Сети: {}", e)))?;
+
+    if resp.status().is_success() {
+        Ok(StatusCode::OK)
+    } else {
+        Err((resp.status(), "Удаленный узел отклонил запрос".to_string()))
+    }
+}
+
+pub async fn ui_send_media(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    body: Bytes,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let target_ip = headers
+        .get("X-Target-Ip")
+        .and_then(|v| v.to_str().ok())
+        .ok_or((StatusCode::BAD_REQUEST, "Не указан IP получателя".to_string()))?;
+
+    let filename = headers
+        .get("X-Filename")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("file.bin");
+
+    let mime = headers
+        .get(header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/octet-stream");
+
+    let port = state
+        .peers
+        .read()
+        .unwrap()
+        .get(target_ip)
+        .map(|p| p.port)
+        .unwrap_or(state.p2p_port);
+
+    let url = format!("https://{}:{}/p2p/media", target_ip, port);
+
+    let resp = state
+        .http_client
+        .post(&url)
+        .header("X-Sender", &state.device_name)
+        .header("X-Filename", filename)
+        .header(header::CONTENT_TYPE, mime)
+        .body(body)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::BAD_GATEWAY, format!("Ошибка TLS/Сети: {}", e)))?;
+
+    if resp.status().is_success() {
+        Ok(StatusCode::OK)
+    } else {
+        Err((resp.status(), "Удаленный узел отклонил медиафайл".to_string()))
+    }
+}
+
+pub async fn ui_serve_saved_file(Path(filename): Path<String>) -> impl IntoResponse {
+    let safe_name = sanitize_filename(&filename);
+    let path = PathBuf::from(MEDIA_DIR).join(&safe_name);
+    match tokio::fs::read(&path).await {
+        Ok(bytes) => (StatusCode::OK, bytes).into_response(),
+        Err(_) => (StatusCode::NOT_FOUND, "Файл не найден на диске").into_response(),
+    }
+}
diff --git a/src/discovery.rs b/src/discovery.rs
new file mode 100644
index 0000000..3a62bd8
--- /dev/null
+++ b/src/discovery.rs
@@ -0,0 +1,113 @@
+use crate::models::{AppState, PeerNode};
+use serde::{Deserialize, Serialize};
+use socket2::{Domain, Protocol, Socket, Type};
+use std::{net::SocketAddr, sync::Arc, time::Duration};
+use tokio::net::UdpSocket;
+
+const BROADCAST_PORT: u16 = 5354;
+const BROADCAST_TARGET: &str = "255.255.255.255:5354";
+
+#[derive(Serialize, Deserialize)]
+struct BeaconPayload {
+    name: String,
+    port: u16,
+    fingerprint: String,
+}
+
+pub fn start_discovery(state: Arc<AppState>) {
+    // 1. Поток передачи маяка (Broadcast Transmitter)
+    let send_state = state.clone();
+    tokio::spawn(async move {
+        let sender = match UdpSocket::bind("0.0.0.0:0").await {
+            Ok(s) => s,
+            Err(e) => {
+                eprintln!("[UDP Beacon] Не удалось открыть сокет отправки: {}", e);
+                return;
+            }
+        };
+        let _ = sender.set_broadcast(true);
+
+        loop {
+            let payload = BeaconPayload {
+                name: send_state.device_name.clone(),
+                port: send_state.p2p_port,
+                fingerprint: send_state.my_fingerprint.clone(),
+            };
+
+            if let Ok(data) = serde_json::to_vec(&payload) {
+                let _ = sender.send_to(&data, BROADCAST_TARGET).await;
+            }
+            tokio::time::sleep(Duration::from_secs(2)).await;
+        }
+    });
+
+    // 2. Поток прослушивания маяков (Broadcast Receiver)
+    tokio::spawn(async move {
+        let bind_addr: SocketAddr = format!("0.0.0.0:{}", BROADCAST_PORT).parse().unwrap();
+        let socket = Socket::new(Domain::IPV4, Type::DGRAM, Some(Protocol::UDP))
+            .expect("Ошибка создания UDP сокета");
+
+        // Кроссплатформенное разрешение повторного использования порта
+        let _ = socket.set_reuse_address(true);
+        let _ = socket.set_broadcast(true);
+        let _ = socket.set_nonblocking(true);
+
+        if let Err(e) = socket.bind(&bind_addr.into()) {
+            eprintln!(
+                "[UDP Beacon] Порт {} занят. Фоновое автообнаружение ограничено: {}",
+                BROADCAST_PORT, e
+            );
+            return;
+        }
+
+        let std_socket: std::net::UdpSocket = socket.into();
+        let receiver = match UdpSocket::from_std(std_socket) {
+            Ok(s) => s,
+            Err(e) => {
+                eprintln!("[UDP Beacon] Ошибка tokio::UdpSocket: {}", e);
+                return;
+            }
+        };
+
+        let mut buf = [0u8; 1500];
+        loop {
+            match receiver.recv_from(&mut buf).await {
+                Ok((len, remote_addr)) => {
+                    if let Ok(beacon) = serde_json::from_slice::<BeaconPayload>(&buf[..len]) {
+                        // Игнорируем собственный маяк
+                        if beacon.fingerprint == state.my_fingerprint || beacon.fingerprint.len() < 8 {
+                            continue;
+                        }
+
+                        let ip_str = remote_addr.ip().to_string();
+                        let pin_code = beacon.fingerprint[..8].to_uppercase();
+
+                        let mut peers = state.peers.write().unwrap();
+                        let is_verified = state
+                            .trusted_fingerprints
+                            .read()
+                            .unwrap()
+                            .get(&ip_str)
+                            .map(|trusted_fp| trusted_fp.eq_ignore_ascii_case(&beacon.fingerprint))
+                            .unwrap_or(false);
+
+                        peers.insert(
+                            ip_str.clone(),
+                            PeerNode {
+                                name: beacon.name,
+                                ip: ip_str,
+                                port: beacon.port,
+                                fingerprint: beacon.fingerprint,
+                                pin_code,
+                                verified: is_verified,
+                            },
+                        );
+                    }
+                }
+                Err(_) => {
+                    tokio::time::sleep(Duration::from_millis(100)).await;
+                }
+            }
+        }
+    });
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cf2fc78
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,180 @@
+mod discovery;
+mod models;
+mod p2p;
+mod tls;
+mod ui;
+
+use axum::{
+    extract::DefaultBodyLimit,
+    routing::{get, post},
+    Router,
+};
+use axum_server::tls_rustls::RustlsConfig;
+use local_ip_address::local_ip;
+use models::{AppState, MAX_PAYLOAD_SIZE, MAX_RAM_TEXTS, MEDIA_DIR};
+use std::{
+    collections::{HashMap, VecDeque},
+    net::SocketAddr,
+    sync::{Arc, RwLock},
+};
+
+#[tokio::main]
+async fn main() {
+    // 0. Регистрация глобального CryptoProvider (ring) для rustls 0.23+
+    let _ = rustls::crypto::ring::default_provider().install_default();
+
+    let args: Vec<String> = std::env::args().collect();
+
+    let mut device_name = "My-Device".to_string();
+    let mut p2p_port: u16 = 8443;
+    let mut ui_port: u16 = 8080;
+    let mut custom_ip: Option<String> = None;
+
+    let mut i = 1;
+    let mut positional_idx = 0;
+    while i < args.len() {
+        match args[i].as_str() {
+            "--ip" => {
+                if i + 1 < args.len() {
+                    custom_ip = Some(args[i + 1].clone());
+                    i += 1;
+                }
+            }
+            "--name" => {
+                if i + 1 < args.len() {
+                    device_name = args[i + 1].clone();
+                    i += 1;
+                }
+            }
+            "--p2p-port" => {
+                if i + 1 < args.len() {
+                    if let Ok(p) = args[i + 1].parse() {
+                        p2p_port = p;
+                    }
+                    i += 1;
+                }
+            }
+            "--ui-port" => {
+                if i + 1 < args.len() {
+                    if let Ok(p) = args[i + 1].parse() {
+                        ui_port = p;
+                    }
+                    i += 1;
+                }
+            }
+            arg if !arg.starts_with("--") => {
+                match positional_idx {
+                    0 => device_name = arg.to_string(),
+                    1 => {
+                        if let Ok(p) = arg.parse() {
+                            p2p_port = p;
+                        }
+                    }
+                    2 => {
+                        if let Ok(p) = arg.parse() {
+                            ui_port = p;
+                        }
+                    }
+                    3 => custom_ip = Some(arg.to_string()),
+                    _ => {}
+                }
+                positional_idx += 1;
+            }
+            _ => {}
+        }
+        i += 1;
+    }
+
+    let (bind_ip, my_ip) = match custom_ip {
+        Some(ip) => {
+            if ip == "0.0.0.0" {
+                let detected = local_ip()
+                    .map(|addr| addr.to_string())
+                    .unwrap_or_else(|_| "127.0.0.1".to_string());
+                ("0.0.0.0".to_string(), detected)
+            } else {
+                (ip.clone(), ip)
+            }
+        }
+        None => {
+            let detected = local_ip().expect("Не удалось определить локальный IP").to_string();
+            ("0.0.0.0".to_string(), detected)
+        }
+    };
+
+    tokio::fs::create_dir_all(MEDIA_DIR)
+        .await
+        .expect("Не удалось создать папку received_media на диске");
+
+    // 1. Генерация сертификата в ОЗУ под выбранный IP и настройка HTTPS-клиентов
+    let (cert_der, key_der, my_fingerprint) = tls::generate_in_memory_cert(&my_ip);
+    let trusted_fingerprints = Arc::new(RwLock::new(HashMap::new()));
+    let http_client = tls::build_pinned_http_client(trusted_fingerprints.clone());
+    let probe_client = tls::build_probe_http_client();
+
+    let state = Arc::new(AppState {
+        device_name: device_name.clone(),
+        my_ip: my_ip.clone(),
+        p2p_port,
+        my_fingerprint: my_fingerprint.clone(),
+        ram_texts: RwLock::new(VecDeque::with_capacity(MAX_RAM_TEXTS)),
+        disk_media: RwLock::new(VecDeque::new()),
+        peers: RwLock::new(HashMap::new()),
+        trusted_fingerprints,
+        http_client,
+        probe_client,
+    });
+
+    // 2. Запуск широковещательного UDP-маяка на порт 5354
+    discovery::start_discovery(state.clone());
+
+    // 3. Запуск внешнего P2P HTTPS-сервера
+    let tls_config = RustlsConfig::from_der(vec![cert_der], key_der)
+        .await
+        .expect("Ошибка конфигурации TLS");
+
+    let p2p_router = Router::new()
+        .route("/p2p/info", get(p2p::p2p_info))
+        .route("/p2p/text", post(p2p::p2p_receive_text))
+        .route("/p2p/media", post(p2p::p2p_receive_media))
+        .layer(DefaultBodyLimit::max(MAX_PAYLOAD_SIZE))
+        .with_state(state.clone());
+
+    let p2p_addr: SocketAddr = format!("{}:{}", bind_ip, p2p_port)
+        .parse()
+        .unwrap_or_else(|_| panic!("Некорректный сокет: {}:{}", bind_ip, p2p_port));
+
+    tokio::spawn(async move {
+        axum_server::bind_rustls(p2p_addr, tls_config)
+            .serve(p2p_router.into_make_service())
+            .await
+            .expect("Ошибка P2P HTTPS-сервера");
+    });
+
+    // 4. Запуск локального UI-сервера (127.0.0.1)
+    let ui_router = Router::new()
+        .route("/", get(ui::ui_index))
+        .route("/ui/state", get(ui::ui_get_state))
+        .route("/ui/manual-peer", post(ui::ui_add_manual_peer))
+        .route("/ui/trust", post(ui::ui_trust_peer))
+        .route("/ui/clear-ram", post(ui::ui_clear_ram))
+        .route("/ui/send-text", post(ui::ui_send_text))
+        .route("/ui/send-media", post(ui::ui_send_media))
+        .route("/ui/files/:filename", get(ui::ui_serve_saved_file))
+        .layer(DefaultBodyLimit::max(MAX_PAYLOAD_SIZE))
+        .with_state(state);
+
+    let ui_addr: SocketAddr = format!("127.0.0.1:{}", ui_port).parse().unwrap();
+    println!("==============================================================");
+    println!(" Устройство:                   {}", device_name);
+    println!(" P2P сокет (HTTPS):            https://{}:{}", bind_ip, p2p_port);
+    println!(" Маяк обнаружения (UDP):       255.255.255.255:5354");
+    println!(" КОД СВЕРКИ СЕРТИФИКАТА (PIN): [ {} ]", &my_fingerprint[..8].to_uppercase());
+    println!(" Хранилище медиа:              ./{}/", MEDIA_DIR);
+    println!("--------------------------------------------------------------");
+    println!(" ОТКРОЙТЕ ИНТЕРФЕЙС В БРАУЗЕРЕ: http://127.0.0.1:{}", ui_port);
+    println!("==============================================================");
+
+    let listener = tokio::net::TcpListener::bind(ui_addr).await.unwrap();
+    axum::serve(listener, ui_router).await.unwrap();
+}
diff --git a/src/mdns.rs b/src/mdns.rs
new file mode 100644
index 0000000..b4904db
--- /dev/null
+++ b/src/mdns.rs
@@ -0,0 +1,60 @@
+use crate::models::{AppState, PeerNode, SERVICE_TYPE};
+use mdns_sd::{ServiceDaemon, ServiceEvent, ServiceInfo};
+use std::sync::Arc;
+
+pub fn start_mdns_service(state: Arc<AppState>) {
+    let mdns = ServiceDaemon::new().expect("Не удалось запустить mDNS");
+
+    let instance_name = format!("{}_{}", state.device_name, &state.my_fingerprint[..6]);
+    let host_name = format!("{}.local.", instance_name);
+    let properties = [
+        ("fp", state.my_fingerprint.as_str()),
+        ("name", state.device_name.as_str()),
+    ];
+
+    let service_info = ServiceInfo::new(
+        SERVICE_TYPE,
+        &instance_name,
+        &host_name,
+        &state.my_ip,
+        state.p2p_port,
+        &properties[..],
+    )
+    .expect("Ошибка создания mDNS записи");
+
+    mdns.register(service_info).expect("Ошибка регистрации mDNS");
+
+    let receiver = mdns.browse(SERVICE_TYPE).expect("Ошибка mDNS browse");
+    tokio::spawn(async move {
+        while let Ok(event) = receiver.recv_async().await {
+            if let ServiceEvent::ServiceResolved(info) = event {
+                let fp = info
+                    .get_property_val_str("fp")
+                    .unwrap_or_default()
+                    .to_string();
+                let name = info
+                    .get_property_val_str("name")
+                    .unwrap_or("Unknown")
+                    .to_string();
+
+                if fp == state.my_fingerprint || fp.len() < 8 {
+                    continue;
+                }
+
+                if let Some(ip) = info.get_addresses().iter().next() {
+                    let ip_str = ip.to_string();
+                    let pin_code = fp[..8].to_uppercase();
+                    let peer = PeerNode {
+                        name,
+                        ip: ip_str.clone(),
+                        port: info.get_port(),
+                        fingerprint: fp,
+                        pin_code,
+                        verified: false,
+                    };
+                    state.peers.write().unwrap().insert(ip_str, peer);
+                }
+            }
+        }
+    });
+}
diff --git a/src/models.rs b/src/models.rs
new file mode 100644
index 0000000..6bfcb0a
--- /dev/null
+++ b/src/models.rs
@@ -0,0 +1,119 @@
+use serde::{Deserialize, Serialize};
+use std::{
+    collections::{HashMap, VecDeque},
+    sync::{Arc, RwLock},
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+pub const MAX_PAYLOAD_SIZE: usize = 200 * 1024 * 1024;
+pub const MAX_RAM_TEXTS: usize = 50;
+pub const MEDIA_DIR: &str = "received_media";
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct TextItem {
+    pub sender: String,
+    pub text: String,
+    pub timestamp: u64,
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct MediaItem {
+    pub sender: String,
+    pub filename: String,
+    pub saved_path: String,
+    pub mime: String,
+    pub size: usize,
+    pub timestamp: u64,
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct PeerNode {
+    pub name: String,
+    pub ip: String,
+    pub port: u16,
+    pub fingerprint: String,
+    pub pin_code: String,
+    pub verified: bool,
+}
+
+pub struct AppState {
+    pub device_name: String,
+    pub my_ip: String,
+    pub p2p_port: u16,
+    pub my_fingerprint: String,
+    pub ram_texts: RwLock<VecDeque<TextItem>>,
+    pub disk_media: RwLock<VecDeque<MediaItem>>,
+    pub peers: RwLock<HashMap<String, PeerNode>>,
+    pub trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+    pub http_client: reqwest::Client,
+    pub probe_client: reqwest::Client,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct IncomingTextPayload {
+    pub sender: String,
+    pub text: String,
+}
+
+#[derive(Deserialize)]
+pub struct UiSendTextRequest {
+    pub target_ip: String,
+    pub text: String,
+}
+
+#[derive(Deserialize)]
+pub struct UiTrustRequest {
+    pub target_ip: String,
+    pub trust: bool,
+}
+
+#[derive(Deserialize)]
+pub struct UiManualPeerRequest {
+    pub ip: String,
+    pub port: Option<u16>,
+}
+
+pub fn now_sec() -> u64 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
+}
+
+pub fn url_decode(input: &str) -> String {
+    let mut bytes = Vec::with_capacity(input.len());
+    let mut chars = input.as_bytes().iter().copied();
+    while let Some(b) = chars.next() {
+        if b == b'%' {
+            if let (Some(c1), Some(c2)) = (chars.next(), chars.next()) {
+                if let Ok(decoded) = u8::from_str_radix(&format!("{}{}", c1 as char, c2 as char), 16)
+                {
+                    bytes.push(decoded);
+                    continue;
+                }
+            }
+        } else if b == b'+' {
+            bytes.push(b' ');
+        } else {
+            bytes.push(b);
+        }
+    }
+    String::from_utf8_lossy(&bytes).into_owned()
+}
+
+pub fn sanitize_filename(name: &str) -> String {
+    let decoded = url_decode(name);
+    let clean: String = decoded
+        .chars()
+        .map(|c| match c {
+            '/' | '\\' | ':' | '*' | '?' | '"' | '<' | '>' | '|' | '\0' => '_',
+            _ => c,
+        })
+        .collect();
+    let trimmed = clean.trim_matches('.').trim();
+    if trimmed.is_empty() {
+        "media_file.bin".to_string()
+    } else {
+        trimmed.to_string()
+    }
+}
diff --git a/src/p2p.rs b/src/p2p.rs
new file mode 100644
index 0000000..5b0f294
--- /dev/null
+++ b/src/p2p.rs
@@ -0,0 +1,91 @@
+use crate::models::{
+    now_sec, sanitize_filename, url_decode, AppState, IncomingTextPayload, MediaItem, TextItem,
+    MAX_RAM_TEXTS, MEDIA_DIR,
+};
+use axum::{
+    body::Bytes,
+    extract::State,
+    http::{header, HeaderMap, StatusCode},
+    Json,
+};
+use std::{path::PathBuf, sync::Arc};
+
+/// Информационный эндпоинт для прямого зондирования узла
+pub async fn p2p_info(State(state): State<Arc<AppState>>) -> Json<serde_json::Value> {
+    Json(serde_json::json!({
+        "name": state.device_name,
+        "port": state.p2p_port,
+        "fingerprint": state.my_fingerprint,
+        "pin": state.my_fingerprint[..8].to_uppercase()
+    }))
+}
+
+/// Прием текста -> СТРОГО В ОЗУ
+pub async fn p2p_receive_text(
+    State(state): State<Arc<AppState>>,
+    Json(payload): Json<IncomingTextPayload>,
+) -> StatusCode {
+    let mut ram_texts = state.ram_texts.write().unwrap();
+    if ram_texts.len() >= MAX_RAM_TEXTS {
+        ram_texts.pop_back();
+    }
+    ram_texts.push_front(TextItem {
+        sender: payload.sender,
+        text: payload.text,
+        timestamp: now_sec(),
+    });
+    StatusCode::OK
+}
+
+/// Прием медиаконтента -> НА ДИСК
+pub async fn p2p_receive_media(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    body: Bytes,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let sender = headers
+        .get("X-Sender")
+        .and_then(|v| v.to_str().ok())
+        .map(url_decode)
+        .unwrap_or_else(|| "Unknown".to_string());
+
+    let raw_filename = headers
+        .get("X-Filename")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("file.bin");
+
+    let mime = headers
+        .get(header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/octet-stream")
+        .to_string();
+
+    tokio::fs::create_dir_all(MEDIA_DIR)
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let safe_name = sanitize_filename(raw_filename);
+    let final_filename = format!("{}_{}", now_sec(), safe_name);
+    let file_path = PathBuf::from(MEDIA_DIR).join(&final_filename);
+
+    tokio::fs::write(&file_path, &body)
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let abs_path = std::fs::canonicalize(&file_path)
+        .unwrap_or_else(|_| file_path.clone())
+        .display()
+        .to_string();
+
+    let mut media_list = state.disk_media.write().unwrap();
+    media_list.push_front(MediaItem {
+        sender,
+        filename: final_filename,
+        saved_path: abs_path,
+        mime,
+        size: body.len(),
+        timestamp: now_sec(),
+    });
+
+    Ok(StatusCode::OK)
+}
diff --git a/src/static/index.html b/src/static/index.html
new file mode 100644
index 0000000..a06b377
--- /dev/null
+++ b/src/static/index.html
@@ -0,0 +1,293 @@
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>LAN Share — Текст в ОЗУ / Медиа на Диск</title>
+<style>
+  :root { --bg: #0f172a; --card: #1e293b; --border: #334155; --accent: #3b82f6; --green: #10b981; --red: #ef4444; --text: #f8fafc; --muted: #94a3b8; }
+  * { box-sizing: border-box; font-family: system-ui, -apple-system, sans-serif; }
+  body { margin: 0; padding: 20px; background: var(--bg); color: var(--text); }
+  .container { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
+  @media (max-width: 800px) { .container { grid-template-columns: 1fr; } }
+  .header { grid-column: 1 / -1; background: var(--card); border: 1px solid var(--border); padding: 16px 20px; border-radius: 12px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
+  .pin-badge { background: #1d4ed8; padding: 6px 14px; border-radius: 8px; font-weight: 700; letter-spacing: 1px; font-family: monospace; font-size: 1.1rem; }
+  .card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
+  h2 { margin: 0; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
+  .tag { font-size: 0.75rem; padding: 3px 8px; border-radius: 6px; font-weight: 600; }
+  .tag-ram { background: rgba(16, 185, 129, 0.2); color: #34d399; }
+  .tag-disk { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
+  input[type="text"], select, textarea, input[type="file"] { width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 10px; font-size: 0.95rem; }
+  textarea { resize: vertical; min-height: 80px; }
+  button { background: var(--accent); color: white; border: none; border-radius: 8px; padding: 10px 16px; font-weight: 600; cursor: pointer; transition: opacity 0.15s; }
+  button:hover { opacity: 0.9; }
+  button.btn-green { background: var(--green); }
+  button.btn-red { background: var(--red); }
+  button.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
+  .peer-item, .msg-item { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; display: flex; justify-content: space-between; align-items: center; gap: 10px; }
+  .msg-item { flex-direction: column; align-items: flex-start; }
+  .msg-meta { width: 100%; display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--muted); }
+  .msg-text { font-size: 0.95rem; white-space: pre-wrap; word-break: break-word; width: 100%; margin: 4px 0; }
+  .path-box { font-family: monospace; font-size: 0.78rem; color: #93c5fd; background: rgba(59,130,246,0.1); padding: 4px 8px; border-radius: 4px; word-break: break-all; }
+  .preview-img { max-width: 100%; max-height: 180px; border-radius: 6px; margin-top: 6px; }
+  #status { grid-column: 1 / -1; padding: 10px 16px; border-radius: 8px; display: none; font-weight: 500; }
+</style>
+</head>
+<body>
+<div class="container">
+  <div class="header">
+    <div>
+      <div style="font-size: 1.2rem; font-weight: 700;" id="my-name">Загрузка...</div>
+      <div style="font-size: 0.85rem; color: var(--muted);" id="my-ip"></div>
+    </div>
+    <div>
+      <span style="font-size: 0.85rem; color: var(--muted); margin-right: 8px;">Код сверки сертификата (PIN):</span>
+      <span class="pin-badge" id="my-pin">--------</span>
+    </div>
+  </div>
+
+  <div id="status"></div>
+
+  <!-- 1. Устройства в сети + ручной ввод -->
+  <div class="card">
+    <h2>1. Устройства в сети <span class="tag tag-disk">UDP Broadcast</span></h2>
+    
+    <div style="display: flex; gap: 8px;">
+      <input type="text" id="manual-ip-input" placeholder="IP устройства (напр. 192.168.1.55)">
+      <button class="btn-sm" style="white-space: nowrap;" onclick="addManualPeer()">Найти по IP</button>
+    </div>
+
+    <div id="peers-list" style="display:flex; flex-direction:column; gap:8px;">
+      <div style="color:var(--muted); font-size:0.9rem;">Поиск устройств через маяк 255.255.255.255:5354...</div>
+    </div>
+  </div>
+
+  <!-- 2. Панель отправки (Только по нажатию) -->
+  <div class="card">
+    <h2>2. Отправка данных</h2>
+    <label style="font-size:0.85rem; color:var(--muted);">Получатель (должен быть заверен):</label>
+    <select id="target-peer"><option value="">-- Выберите устройство --</option></select>
+
+    <textarea id="text-input" placeholder="Введите текст (Enter — отправить, Shift+Enter — новая строка)..."></textarea>
+    <button onclick="sendText()">Отправить текст в ОЗУ</button>
+
+    <hr style="border:0; border-top:1px solid var(--border); width:100%; margin: 4px 0;">
+    <input type="file" id="media-input">
+    <button class="btn-green" onclick="sendMedia()">Отправить медиа на диск получателя</button>
+  </div>
+
+  <!-- 3. Принятый текст (Строго в ОЗУ) -->
+  <div class="card">
+    <h2>
+      <span>Входящий текст <span class="tag tag-ram">ТОЛЬКО В ОЗУ</span></span>
+      <button class="btn-red btn-sm" onclick="clearRam()">Очистить ОЗУ</button>
+    </h2>
+    <div id="ram-texts" style="display:flex; flex-direction:column; gap:10px; max-height: 400px; overflow-y: auto;"></div>
+  </div>
+
+  <!-- 4. Принятые медиафайлы (Сохранены на диске) -->
+  <div class="card">
+    <h2>Входящие медиафайлы <span class="tag tag-disk">НА ДИСКЕ (./received_media)</span></h2>
+    <div id="disk-media" style="display:flex; flex-direction:column; gap:10px; max-height: 400px; overflow-y: auto;"></div>
+  </div>
+</div>
+
+<script>
+let knownPeersKey = "";
+
+function showStatus(msg, isError = false) {
+  const el = document.getElementById('status');
+  el.style.display = 'block';
+  el.style.background = isError ? 'rgba(239, 68, 68, 0.2)' : 'rgba(16, 185, 129, 0.2)';
+  el.style.border = `1px solid ${isError ? '#ef4444' : '#10b981'}`;
+  el.textContent = msg;
+  setTimeout(() => { el.style.display = 'none'; }, 4000);
+}
+
+async function fetchState() {
+  try {
+    const res = await fetch('/ui/state');
+    const data = await res.json();
+
+    document.getElementById('my-name').textContent = `Устройство: ${data.device_name}`;
+    document.getElementById('my-ip').textContent = `HTTPS P2P: ${data.my_ip}:${data.p2p_port} | SHA-256: ${data.my_fingerprint.slice(0, 24)}...`;
+    document.getElementById('my-pin').textContent = data.my_pin;
+
+    const peersContainer = document.getElementById('peers-list');
+    if (data.peers.length === 0) {
+      peersContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Устройства пока не найдены. Введите IP вручную, если в сети отключен broadcast.</div>';
+    } else {
+      peersContainer.innerHTML = data.peers.map(p => `
+        <div class="peer-item">
+          <div>
+            <div style="font-weight:600;">${escapeHtml(p.name)} <span style="color:var(--muted); font-size:0.85rem;">(${p.ip}:${p.port})</span></div>
+            <div style="font-size:0.8rem; color:var(--muted); font-family:monospace;">PIN: <b style="color:#fff;">[${p.pin_code}]</b> | Статус: ${p.verified ? '<span style="color:#34d399;">Заверен</span>' : '<span style="color:#f87171;">Не заверен</span>'}</div>
+          </div>
+          <button class="btn-sm ${p.verified ? 'btn-red' : 'btn-green'}" onclick="toggleTrust('${p.ip}', ${!p.verified})">
+            ${p.verified ? 'Отозвать' : 'Заверить'}
+          </button>
+        </div>
+      `).join('');
+    }
+
+    const currentSelectKey = data.peers.map(p => `${p.ip}:${p.verified}`).join('|');
+    if (currentSelectKey !== knownPeersKey) {
+      knownPeersKey = currentSelectKey;
+      const select = document.getElementById('target-peer');
+      const prevVal = select.value;
+      select.innerHTML = '<option value="">-- Выберите устройство --</option>' +
+        data.peers.map(p => `<option value="${p.ip}">${escapeHtml(p.name)} (${p.ip}) ${p.verified ? '✓' : '🔒 [Не заверен]'}</option>`).join('');
+      if (prevVal) select.value = prevVal;
+    }
+
+    const textsContainer = document.getElementById('ram-texts');
+    if (data.texts.length === 0) {
+      textsContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Буфер ОЗУ пуст</div>';
+    } else {
+      textsContainer.innerHTML = data.texts.map(t => `
+        <div class="msg-item">
+          <div class="msg-meta">
+            <span>От: <b>${escapeHtml(t.sender)}</b></span>
+            <button class="btn-sm" onclick="copyText(${JSON.stringify(t.text).replace(/"/g, '&quot;')})">Скопировать</button>
+          </div>
+          <div class="msg-text">${escapeHtml(t.text)}</div>
+        </div>
+      `).join('');
+    }
+
+    const mediaContainer = document.getElementById('disk-media');
+    if (data.media.length === 0) {
+      mediaContainer.innerHTML = '<div style="color:var(--muted); font-size:0.9rem;">Нет сохраненных медиафайлов</div>';
+    } else {
+      mediaContainer.innerHTML = data.media.map(m => {
+        const isImg = m.mime.startsWith('image/');
+        const fileUrl = `/ui/files/${encodeURIComponent(m.filename)}`;
+        return `
+          <div class="msg-item">
+            <div class="msg-meta">
+              <span>От: <b>${escapeHtml(m.sender)}</b></span>
+              <span>${(m.size / 1024).toFixed(1)} КБ</span>
+            </div>
+            <div style="font-weight:600; margin:2px 0;">
+              <a href="${fileUrl}" target="_blank" style="color:#60a5fa; text-decoration:none;">${escapeHtml(m.filename)} ↗</a>
+            </div>
+            <div class="path-box">Диск: ${escapeHtml(m.saved_path)}</div>
+            ${isImg ? `<img src="${fileUrl}" class="preview-img">` : ''}
+          </div>
+        `;
+      }).join('');
+    }
+  } catch (e) {}
+}
+
+async function addManualPeer() {
+  const input = document.getElementById('manual-ip-input');
+  const ip = input.value.trim();
+  if (!ip) return showStatus('Введите IP-адрес для поиска', true);
+
+  showStatus(`Опрос узла ${ip}...`);
+  const res = await fetch('/ui/manual-peer', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ ip, port: 8443 })
+  });
+
+  if (res.ok) {
+    input.value = '';
+    showStatus(`Узел ${ip} успешно найден!`);
+    fetchState();
+  } else {
+    const err = await res.text();
+    showStatus(err, true);
+  }
+}
+
+async function toggleTrust(ip, trust) {
+  const res = await fetch('/ui/trust', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ target_ip: ip, trust })
+  });
+  if (res.ok) {
+    showStatus(trust ? `Сертификат узла ${ip} заверен в ОЗУ` : `Доверие узлу ${ip} отозвано`);
+    fetchState();
+  }
+}
+
+async function sendText() {
+  const target_ip = document.getElementById('target-peer').value;
+  const input = document.getElementById('text-input');
+  const text = input.value.trim();
+  if (!target_ip) return showStatus('Выберите устройство-получатель!', true);
+  if (!text) return showStatus('Введите текст для отправки!', true);
+
+  const res = await fetch('/ui/send-text', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ target_ip, text })
+  });
+
+  if (res.ok) {
+    input.value = '';
+    showStatus(`Текст доставлен в ОЗУ узла ${target_ip}`);
+  } else {
+    const err = await res.text();
+    showStatus(err, true);
+  }
+}
+
+async function sendMedia() {
+  const target_ip = document.getElementById('target-peer').value;
+  const fileInput = document.getElementById('media-input');
+  if (!target_ip) return showStatus('Выберите устройство-получатель!', true);
+  if (!fileInput.files.length) return showStatus('Выберите медиафайл!', true);
+
+  const file = fileInput.files[0];
+  showStatus(`Отправка файла "${file.name}"...`);
+
+  const res = await fetch('/ui/send-media', {
+    method: 'POST',
+    headers: {
+      'X-Target-Ip': target_ip,
+      'X-Filename': encodeURIComponent(file.name),
+      'Content-Type': file.type || 'application/octet-stream'
+    },
+    body: file
+  });
+
+  if (res.ok) {
+    fileInput.value = '';
+    showStatus(`Файл "${file.name}" сохранен на диске узла ${target_ip}`);
+  } else {
+    const err = await res.text();
+    showStatus(err, true);
+  }
+}
+
+async function clearRam() {
+  await fetch('/ui/clear-ram', { method: 'POST' });
+  fetchState();
+  showStatus('Буфер текстовых сообщений в ОЗУ очищен');
+}
+
+function copyText(text) {
+  navigator.clipboard.writeText(text);
+  showStatus('Текст скопирован в буфер обмена');
+}
+
+function escapeHtml(str) {
+  return String(str).replace(/[&<>"']/g, s => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[s]));
+}
+
+document.getElementById('text-input').addEventListener('keydown', (e) => {
+  if (e.key === 'Enter' && !e.shiftKey) {
+    e.preventDefault();
+    sendText();
+  }
+});
+
+setInterval(fetchState, 1500);
+fetchState();
+</script>
+</body>
+</html>
diff --git a/src/tls.rs b/src/tls.rs
new file mode 100644
index 0000000..3c4e708
--- /dev/null
+++ b/src/tls.rs
@@ -0,0 +1,215 @@
+use rcgen::{generate_simple_self_signed, CertifiedKey};
+use rustls::{
+    client::danger::{HandshakeSignatureValid, ServerCertVerified, ServerCertVerifier},
+    crypto::{verify_tls12_signature, verify_tls13_signature, CryptoProvider},
+    pki_types::{CertificateDer, ServerName, UnixTime},
+    ClientConfig, DigitallySignedStruct, Error as TlsError, SignatureScheme,
+};
+use sha2::{Digest, Sha256};
+use std::{
+    collections::HashMap,
+    sync::{Arc, RwLock},
+    time::Duration,
+};
+
+#[derive(Debug)]
+pub struct PinnedCertVerifier {
+    trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+    provider: Arc<CryptoProvider>,
+}
+
+impl PinnedCertVerifier {
+    pub fn new(trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>) -> Self {
+        Self {
+            trusted_fingerprints,
+            provider: Arc::new(rustls::crypto::ring::default_provider()),
+        }
+    }
+
+    fn cert_fingerprint(cert: &CertificateDer<'_>) -> String {
+        let mut hasher = Sha256::new();
+        hasher.update(cert.as_ref());
+        hex::encode(hasher.finalize())
+    }
+}
+
+impl ServerCertVerifier for PinnedCertVerifier {
+    fn verify_server_cert(
+        &self,
+        end_entity: &CertificateDer<'_>,
+        _intermediates: &[CertificateDer<'_>],
+        server_name: &ServerName<'_>,
+        _ocsp_response: &[u8],
+        _now: UnixTime,
+    ) -> Result<ServerCertVerified, TlsError> {
+        let actual_fp = Self::cert_fingerprint(end_entity);
+        let host = match server_name {
+            ServerName::DnsName(name) => name.as_ref().to_string(),
+            ServerName::IpAddress(ip) => std::net::IpAddr::from(*ip).to_string(),
+            _ => return Err(TlsError::General("Неподдерживаемое имя узла".into())),
+        };
+
+        let trusted = self.trusted_fingerprints.read().unwrap();
+        match trusted.get(&host) {
+            Some(expected_fp) if expected_fp.eq_ignore_ascii_case(&actual_fp) => {
+                Ok(ServerCertVerified::assertion())
+            }
+            Some(_) => Err(TlsError::General(format!(
+                "ВНИМАНИЕ: Сертификат узла {} не совпадает с заверенным!",
+                host
+            ))),
+            None => Err(TlsError::General(format!(
+                "Узел {} не заверен! Нажмите «Заверить» в списке устройств.",
+                host
+            ))),
+        }
+    }
+
+    fn verify_tls12_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls12_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn verify_tls13_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls13_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn supported_verify_schemes(&self) -> Vec<SignatureScheme> {
+        self.provider
+            .signature_verification_algorithms
+            .supported_schemes()
+    }
+}
+
+/// Верификатор, используемый исключительно для зондирования узла при ручном добавлении по IP
+#[derive(Debug)]
+pub struct AnyCertVerifier {
+    provider: Arc<CryptoProvider>,
+}
+
+impl AnyCertVerifier {
+    pub fn new() -> Self {
+        Self {
+            provider: Arc::new(rustls::crypto::ring::default_provider()),
+        }
+    }
+}
+
+impl ServerCertVerifier for AnyCertVerifier {
+    fn verify_server_cert(
+        &self,
+        _end_entity: &CertificateDer<'_>,
+        _intermediates: &[CertificateDer<'_>],
+        _server_name: &ServerName<'_>,
+        _ocsp_response: &[u8],
+        _now: UnixTime,
+    ) -> Result<ServerCertVerified, TlsError> {
+        Ok(ServerCertVerified::assertion())
+    }
+
+    fn verify_tls12_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls12_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn verify_tls13_signature(
+        &self,
+        message: &[u8],
+        cert: &CertificateDer<'_>,
+        dss: &DigitallySignedStruct,
+    ) -> Result<HandshakeSignatureValid, TlsError> {
+        verify_tls13_signature(
+            message,
+            cert,
+            dss,
+            &self.provider.signature_verification_algorithms,
+        )
+    }
+
+    fn supported_verify_schemes(&self) -> Vec<SignatureScheme> {
+        self.provider
+            .signature_verification_algorithms
+            .supported_schemes()
+    }
+}
+
+pub fn generate_in_memory_cert(ip: &str) -> (Vec<u8>, Vec<u8>, String) {
+    let san = vec!["localhost".to_string(), ip.to_string()];
+    let CertifiedKey { cert, key_pair } =
+        generate_simple_self_signed(san).expect("Ошибка генерации сертификата");
+
+    let cert_der = cert.der().to_vec();
+    let key_der = key_pair.serialize_der();
+
+    let mut hasher = Sha256::new();
+    hasher.update(&cert_der);
+    let fingerprint = hex::encode(hasher.finalize());
+
+    (cert_der, key_der, fingerprint)
+}
+
+pub fn build_pinned_http_client(
+    trusted_fingerprints: Arc<RwLock<HashMap<String, String>>>,
+) -> reqwest::Client {
+    let verifier = Arc::new(PinnedCertVerifier::new(trusted_fingerprints));
+    let rustls_client_config = ClientConfig::builder_with_provider(Arc::new(
+        rustls::crypto::ring::default_provider(),
+    ))
+    .with_safe_default_protocol_versions()
+    .unwrap()
+    .dangerous()
+    .with_custom_certificate_verifier(verifier)
+    .with_no_client_auth();
+
+    reqwest::Client::builder()
+        .use_preconfigured_tls(rustls_client_config)
+        .timeout(Duration::from_secs(30))
+        .build()
+        .expect("Ошибка создания HTTPS-клиента")
+}
+
+pub fn build_probe_http_client() -> reqwest::Client {
+    let verifier = Arc::new(AnyCertVerifier::new());
+    let rustls_client_config = ClientConfig::builder_with_provider(Arc::new(
+        rustls::crypto::ring::default_provider(),
+    ))
+    .with_safe_default_protocol_versions()
+    .unwrap()
+    .dangerous()
+    .with_custom_certificate_verifier(verifier)
+    .with_no_client_auth();
+
+    reqwest::Client::builder()
+        .use_preconfigured_tls(rustls_client_config)
+        .timeout(Duration::from_secs(4))
+        .build()
+        .expect("Ошибка создания probe-клиента")
+}
diff --git a/src/ui.rs b/src/ui.rs
new file mode 100644
index 0000000..2462074
--- /dev/null
+++ b/src/ui.rs
@@ -0,0 +1,219 @@
+use crate::models::{
+    sanitize_filename, AppState, IncomingTextPayload, MediaItem, PeerNode, TextItem,
+    UiManualPeerRequest, UiSendTextRequest, UiTrustRequest, MEDIA_DIR,
+};
+use axum::{
+    body::Bytes,
+    extract::{Path, State},
+    http::{header, HeaderMap, StatusCode},
+    response::{Html, IntoResponse},
+    Json,
+};
+use std::{path::PathBuf, sync::Arc};
+
+const INDEX_HTML: &str = include_str!("static/index.html");
+
+pub async fn ui_index() -> Html<&'static str> {
+    Html(INDEX_HTML)
+}
+
+pub async fn ui_get_state(State(state): State<Arc<AppState>>) -> Json<serde_json::Value> {
+    let trusted_map = state.trusted_fingerprints.read().unwrap();
+    let mut peers_list: Vec<PeerNode> = state
+        .peers
+        .read()
+        .unwrap()
+        .values()
+        .cloned()
+        .map(|mut p| {
+            p.verified = trusted_map
+                .get(&p.ip)
+                .map(|fp| fp.eq_ignore_ascii_case(&p.fingerprint))
+                .unwrap_or(false);
+            p
+        })
+        .collect();
+    peers_list.sort_by(|a, b| a.name.cmp(&b.name));
+
+    let texts: Vec<TextItem> = state.ram_texts.read().unwrap().iter().cloned().collect();
+    let media: Vec<MediaItem> = state.disk_media.read().unwrap().iter().cloned().collect();
+
+    Json(serde_json::json!({
+        "device_name": state.device_name,
+        "my_ip": state.my_ip,
+        "p2p_port": state.p2p_port,
+        "my_fingerprint": state.my_fingerprint,
+        "my_pin": state.my_fingerprint[..8].to_uppercase(),
+        "peers": peers_list,
+        "texts": texts,
+        "media": media
+    }))
+}
+
+pub async fn ui_add_manual_peer(
+    State(state): State<Arc<AppState>>,
+    Json(req): Json<UiManualPeerRequest>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let ip = req.ip.trim().to_string();
+    let port = req.port.unwrap_or(8443);
+
+    let url = format!("https://{}:{}/p2p/info", ip, port);
+    let resp = state
+        .probe_client
+        .get(&url)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::BAD_REQUEST, format!("Узел недоступен: {}", e)))?;
+
+    if !resp.status().is_success() {
+        return Err((StatusCode::BAD_GATEWAY, "Узел вернул ошибку".into()));
+    }
+
+    let info: serde_json::Value = resp
+        .json()
+        .await
+        .map_err(|_| (StatusCode::BAD_GATEWAY, "Неверный ответ узла".into()))?;
+
+    let name = info["name"].as_str().unwrap_or("Manual-Node").to_string();
+    let fingerprint = info["fingerprint"].as_str().unwrap_or("").to_string();
+
+    if fingerprint.is_empty() {
+        return Err((StatusCode::BAD_GATEWAY, "Отсутствует отпечаток узла".into()));
+    }
+
+    let pin_code = fingerprint[..8].to_uppercase();
+    let is_verified = state
+        .trusted_fingerprints
+        .read()
+        .unwrap()
+        .get(&ip)
+        .map(|fp| fp.eq_ignore_ascii_case(&fingerprint))
+        .unwrap_or(false);
+
+    state.peers.write().unwrap().insert(
+        ip.clone(),
+        PeerNode {
+            name,
+            ip,
+            port,
+            fingerprint,
+            pin_code,
+            verified: is_verified,
+        },
+    );
+
+    Ok(StatusCode::OK)
+}
+
+pub async fn ui_trust_peer(
+    State(state): State<Arc<AppState>>,
+    Json(req): Json<UiTrustRequest>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let peers = state.peers.read().unwrap();
+    let peer = peers
+        .get(&req.target_ip)
+        .ok_or((StatusCode::NOT_FOUND, "Узел не найден".to_string()))?;
+
+    let mut trusted = state.trusted_fingerprints.write().unwrap();
+    if req.trust {
+        trusted.insert(peer.ip.clone(), peer.fingerprint.clone());
+    } else {
+        trusted.remove(&peer.ip);
+    }
+    Ok(StatusCode::OK)
+}
+
+pub async fn ui_clear_ram(State(state): State<Arc<AppState>>) -> StatusCode {
+    state.ram_texts.write().unwrap().clear();
+    StatusCode::OK
+}
+
+pub async fn ui_send_text(
+    State(state): State<Arc<AppState>>,
+    Json(req): Json<UiSendTextRequest>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let port = state
+        .peers
+        .read()
+        .unwrap()
+        .get(&req.target_ip)
+        .map(|p| p.port)
+        .unwrap_or(state.p2p_port);
+
+    let url = format!("https://{}:{}/p2p/text", req.target_ip, port);
+    let payload = IncomingTextPayload {
+        sender: state.device_name.clone(),
+        text: req.text,
+    };
+
+    let resp = state
+        .http_client
+        .post(&url)
+        .json(&payload)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::BAD_GATEWAY, format!("Ошибка TLS/Сети: {}", e)))?;
+
+    if resp.status().is_success() {
+        Ok(StatusCode::OK)
+    } else {
+        Err((resp.status(), "Удаленный узел отклонил запрос".to_string()))
+    }
+}
+
+pub async fn ui_send_media(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    body: Bytes,
+) -> Result<StatusCode, (StatusCode, String)> {
+    let target_ip = headers
+        .get("X-Target-Ip")
+        .and_then(|v| v.to_str().ok())
+        .ok_or((StatusCode::BAD_REQUEST, "Не указан IP получателя".to_string()))?;
+
+    let filename = headers
+        .get("X-Filename")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("file.bin");
+
+    let mime = headers
+        .get(header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/octet-stream");
+
+    let port = state
+        .peers
+        .read()
+        .unwrap()
+        .get(target_ip)
+        .map(|p| p.port)
+        .unwrap_or(state.p2p_port);
+
+    let url = format!("https://{}:{}/p2p/media", target_ip, port);
+
+    let resp = state
+        .http_client
+        .post(&url)
+        .header("X-Sender", &state.device_name)
+        .header("X-Filename", filename)
+        .header(header::CONTENT_TYPE, mime)
+        .body(body)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::BAD_GATEWAY, format!("Ошибка TLS/Сети: {}", e)))?;
+
+    if resp.status().is_success() {
+        Ok(StatusCode::OK)
+    } else {
+        Err((resp.status(), "Удаленный узел отклонил медиафайл".to_string()))
+    }
+}
+
+pub async fn ui_serve_saved_file(Path(filename): Path<String>) -> impl IntoResponse {
+    let safe_name = sanitize_filename(&filename);
+    let path = PathBuf::from(MEDIA_DIR).join(&safe_name);
+    match tokio::fs::read(&path).await {
+        Ok(bytes) => (StatusCode::OK, bytes).into_response(),
+        Err(_) => (StatusCode::NOT_FOUND, "Файл не найден на диске").into_response(),
+    }
+}