Add ping latency measurements

backend/main.py

@@ -1,5 +1,6 @@
 from pathlib import Path
 from datetime import datetime
+import re
 
 from fastapi import FastAPI, Depends, Request
 from fastapi.middleware.cors import CORSMiddleware
@@ -53,6 +54,27 @@ def get_db():
         db.close()
 
 
+def _ping(host: str) -> float | None:
+    """Return the ping time to ``host`` in milliseconds.
+
+    Returns ``None`` if the command fails or the output cannot be parsed.
+    """
+    try:
+        result = subprocess.run(
+            ["ping", "-c", "1", host],
+            capture_output=True,
+            text=True,
+            timeout=5,
+        )
+        if result.returncode == 0:
+            match = re.search(r"time[=<]([0-9.]+) ms", result.stdout)
+            if match:
+                return float(match.group(1))
+    except Exception:
+        pass
+    return None
+
+
 @app.get("/", response_class=HTMLResponse, include_in_schema=False)
 def read_root(request: Request, db: Session = Depends(get_db)):
     """Default homepage.
@@ -65,6 +87,10 @@ def read_root(request: Request, db: Session = Depends(get_db)):
     client_ip = request.client.host
     data = {"client_ip": client_ip, "test_target": "default"}
 
+    ping_ms = _ping(client_ip)
+    if ping_ms is not None:
+        data["ping_ms"] = ping_ms
+
     try:
         resp = requests.get(f"https://ipapi.co/{client_ip}/json/")
         if resp.ok:
@@ -138,6 +164,12 @@ def create_test(
         except Exception:
             pass
 
+    if not data.get("ping_ms"):
+        host = data.get("test_target") or client_ip
+        ping_ms = _ping(host)
+        if ping_ms is not None:
+            data["ping_ms"] = ping_ms
+
     db_record = models.TestRecord(**data)
     db.add(db_record)
     db.commit()

backend/templates/index.html

@@ -31,13 +31,14 @@ <h1>Your Connection Info</h1>
       {% if info.location %}<li>Location: {{ info.location }}</li>{% endif %}
       {% if info.asn %}<li>ASN: {{ info.asn }}</li>{% endif %}
       {% if info.isp %}<li>ISP: {{ info.isp }}</li>{% endif %}
+      {% if info.ping_ms %}<li>Ping: {{ '%.2f'|format(info.ping_ms) }} ms</li>{% endif %}
       <li>Recorded at: {{ info.timestamp|short_ts }}</li>
     </ul>
 
     <h2>Recent Tests</h2>
     <ul>
       {% for r in records %}
-      <li>{{ r.client_ip|mask_ip }}{% if r.location %} - {{ r.location }}{% endif %} - {{ r.timestamp|short_ts }}</li>
+      <li>{{ r.client_ip|mask_ip }}{% if r.location %} - {{ r.location }}{% endif %}{% if r.ping_ms %} - {{ '%.2f'|format(r.ping_ms) }} ms{% endif %} - {{ r.timestamp|short_ts }}</li>
       {% endfor %}
     </ul>
 

frontend/src/App.tsx

@@ -90,6 +90,9 @@ function App() {
             )}
             {info.asn && <div>ASN: {info.asn}</div>}
             {info.isp && <div>ISP: {info.isp}</div>}
+            {typeof info.ping_ms === 'number' && (
+              <div>Ping: {info.ping_ms.toFixed(2)} ms</div>
+            )}
             <div className="text-sm text-gray-400">
               Recorded at: {new Date(info.timestamp).toLocaleString()}
             </div>
@@ -109,6 +112,7 @@ function App() {
                   <li key={r.id}>
                     {maskIp(r.client_ip)}
                     {r.location && r.location !== 'Unknown' && ` - ${r.location}`} -{' '}
+                    {typeof r.ping_ms === 'number' && `${r.ping_ms.toFixed(2)} ms - `}
                     {new Date(r.timestamp).toLocaleString()}
                   </li>
                 ))}