feat: Реализован новый веб-интерфейс и бэкенд для управления VPN-клиентом, включая списки серверов, элементы управления прокси и опции конфигурации.

web/app/network.py

@@ -0,0 +1,108 @@
+import socket
+import time
+import urllib.request
+from .config import PROXY_PORT
+
+def measure_tcp_latency(host: str, port: int, timeout: float = 2.0) -> int:
+    """Measure TCP latency to a host:port in milliseconds"""
+    start_time = time.time()
+    try:
+        with socket.create_connection((host, port), timeout=timeout):
+            latency = (time.time() - start_time) * 1000
+            return int(latency)
+    except Exception:
+        return -1
+
+
+def measure_proxy_performance(enable_speed_test: bool = False) -> dict:
+    """Measure proxy latency, speed and public IP via local proxy"""
+    proxy_url = f"http://127.0.0.1:{PROXY_PORT}"
+    proxies = {"http": proxy_url, "https": proxy_url}
+    
+    # 1. Measure Latency (Ping)
+    latency = "Timeout"
+    try:
+        start_time = time.time()
+        # Use a reliable endpoint for ping
+        opener = urllib.request.build_opener(urllib.request.ProxyHandler(proxies))
+        req = urllib.request.Request("http://www.gstatic.com/generate_204", headers={"User-Agent": "singbox-test"})
+        with opener.open(req, timeout=5) as response:
+            lat_ms = int((time.time() - start_time) * 1000)
+            latency = f"{lat_ms}ms"
+    except Exception as e:
+        latency = "Error"
+
+    # 2. Get Public IP (IPv4)
+    ip = "Unknown"
+    try:
+        opener = urllib.request.build_opener(urllib.request.ProxyHandler(proxies))
+        # Use v4.ident.me to force IPv4
+        req = urllib.request.Request("http://v4.ident.me", headers={"User-Agent": "curl/7.68.0"})
+        with opener.open(req, timeout=5) as response:
+            ip = response.read().decode('utf-8').strip()
+    except Exception:
+        # Fallback to ipify if ident.me fails or returns garbage
+        try:
+            req = urllib.request.Request("http://api.ipify.org", headers={"User-Agent": "curl/7.68.0"})
+            with opener.open(req, timeout=5) as response:
+                ip = response.read().decode('utf-8').strip()
+        except Exception:
+            pass
+
+    # 3. Measure Download Speed
+    speed_mbps = 0.0
+    if enable_speed_test:
+        test_files = [
+            # Tele2 Speedtest (Usually very reliable and fast)
+            ("https://speedtest.selectel.ru/100MB", 100),
+            # ThinkBroadband (Reliable backup)
+            ("https://speedtest.selectel.ru/1GB", 1000)
+        ]
+        
+        for url, size_mb in test_files:
+            try:
+                print(f"[WebUI] Testing speed with: {url}")
+                start_time = time.time()
+                opener = urllib.request.build_opener(urllib.request.ProxyHandler(proxies))
+                # Set a longer timeout for speed tests
+                with opener.open(url, timeout=30) as response:
+                    downloaded = 0
+                    # Larger chunk size for better throughput measurement
+                    chunk_size = 1024 * 256  # 256KB chunks
+                    
+                    # Download for at least 2 seconds or up to 25MB for accurate measurement
+                    min_test_duration = 2.0  # seconds
+                    max_download_bytes = 25 * 1024 * 1024  # 25MB
+                    
+                    while True:
+                        chunk = response.read(chunk_size)
+                        if not chunk:
+                            break
+                        downloaded += len(chunk)
+                        
+                        elapsed = time.time() - start_time
+                        # Stop if we've downloaded enough AND tested for minimum duration
+                        if downloaded >= max_download_bytes or (elapsed >= min_test_duration and downloaded >= 2 * 1024 * 1024):
+                            break
+                    
+                    duration = time.time() - start_time
+                    if duration > 0.1 and downloaded > 0:
+                        # Calculate speed in Mbps (megabits per second)
+                        # downloaded bytes * 8 bits/byte / 1,000,000 / seconds
+                        speed_mbps = round((downloaded * 8) / (1000 * 1000) / duration, 1)
+                        print(f"[WebUI] Speed test: downloaded {downloaded / (1024*1024):.1f}MB in {duration:.1f}s = {speed_mbps} Mbps")
+                        break  # Stop if successful
+            except Exception as e:
+                print(f"[WebUI] Speed test failed for {url}: {e}")
+                continue
+
+    result = {
+        "latency": latency,
+        "ip": ip
+    }
+    
+    if enable_speed_test:
+        # If speed is still 0.0 but we tried, return Error or 0.0
+        result["speed"] = f"{speed_mbps} Mbps"
+    
+    return result