Update README

diagnose_domains.py

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+"""Diagnose gfil-lab.com redirect loop and gfil-intel.xyz bot blocking"""
+import urllib.request
+import http.client
+
+# Test gfil-lab.com
+print("=== gfil-lab.com ===")
+try:
+    r = urllib.request.urlopen("https://gfil-lab.com", timeout=15)
+    print(f"Status: {r.status}")
+    print(f"URL after redirects: {r.url}")
+    print(f"Headers: {dict(r.headers)}")
+except urllib.error.HTTPError as e:
+    print(f"HTTPError: {e.code} {e.reason}")
+    print(f"Headers: {dict(e.headers)}")
+    print(f"Redirect location: {e.headers.get('Location', 'N/A')}")
+except Exception as e:
+    print(f"Error: {type(e).__name__}: {e}")
+
+# Test with manual redirect following
+print("\n=== Manual redirect trace for gfil-lab.com ===")
+url = "https://gfil-lab.com"
+for i in range(10):
+    try:
+        req = urllib.request.Request(url, headers={"User-Agent": "Mozilla/5.0"})
+        r = urllib.request.urlopen(req, timeout=10)
+        print(f"Hop {i}: {url} -> {r.url} (status {r.status})")
+        break
+    except urllib.error.HTTPError as e:
+        loc = e.headers.get("Location", "")
+        print(f"Hop {i}: {url} -> {e.code} {e.reason}, Location: {loc}")
+        if loc:
+            url = loc
+        else:
+            break
+    except Exception as e:
+        print(f"Hop {i}: {url} -> Error: {e}")
+        break
+
+# Test gfil-intel.xyz
+print("\n=== gfil-intel.xyz ===")
+try:
+    req = urllib.request.Request("https://gfil-intel.xyz", headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"})
+    r = urllib.request.urlopen(req, timeout=15)
+    print(f"Status: {r.status}")
+    print(f"Size: {len(r.read())} bytes")
+except urllib.error.HTTPError as e:
+    print(f"HTTPError: {e.code} {e.reason}")
+    body = e.read().decode()[:500]
+    print(f"Body: {body}")
+except Exception as e:
+    print(f"Error: {type(e).__name__}: {e}")
+
+# Check DNS
+print("\n=== DNS Check ===")
+import socket
+for domain in ["gfil-lab.com", "gfil-intel.xyz"]:
+    try:
+        ips = socket.getaddrinfo(domain, 443, socket.AF_INET)
+        print(f"{domain}: {[x[4][0] for x in ips[:3]]}")
+    except Exception as e:
+        print(f"{domain}: DNS error - {e}")