Initial import: clean snapshot from /home/olafn/infoscreen-dev (2025-10-25)

scripts/test_cdp_origins.py

@@ -0,0 +1,76 @@
+#!/usr/bin/env python3
+# scripts/test_cdp_origins.py
+# Tries several Origin headers when connecting to Chromium DevTools websocket
+import requests, websocket, json, sys, time
+
+def try_origin(ws_url, origin_header):
+    try:
+        # websocket-client accepts header=[...] or origin=... depending on version
+        try:
+            ws = websocket.create_connection(ws_url, timeout=5, header=[f"Origin: {origin_header}"])
+        except TypeError:
+            ws = websocket.create_connection(ws_url, timeout=5, origin=origin_header)
+        return True, "connected"
+    except Exception as e:
+        return False, str(e)
+
+def main():
+    try:
+        tabs = requests.get('http://127.0.0.1:9222/json', timeout=3).json()
+    except Exception as e:
+        print("ERROR: could not fetch DevTools json:", e)
+        return
+
+    if not tabs:
+        print("No DevTools targets found")
+        return
+
+    target = tabs[0]
+    ws_url = target.get('webSocketDebuggerUrl')
+    print("Using target url:", target.get('url'))
+    print("DevTools websocket:", ws_url)
+    if not ws_url:
+        print("No webSocketDebuggerUrl found in target")
+        return
+
+    # candidate origins to try
+    candidates = [
+        "http://127.0.0.1",
+        "http://localhost",
+        "https://www.computerbase.de",  # page origin (use the exact scheme + host of the page)
+        "https://computerbase.de",
+        "null",
+        "chrome-devtools://devtools",
+        ""
+    ]
+
+    print("\nTrying origins (may need to match page origin exactly):")
+    for orig in candidates:
+        ok, msg = try_origin(ws_url, orig)
+        print(f"Origin={repr(orig):30} -> {ok} : {msg}")
+
+    # If one of them connected, try to send a Runtime.evaluate to confirm:
+    # (try the first that succeeded)
+    for orig in candidates:
+        try:
+            try:
+                ws = websocket.create_connection(ws_url, timeout=5, header=[f"Origin: {orig}"])
+            except TypeError:
+                ws = websocket.create_connection(ws_url, timeout=5, origin=orig)
+            print("\nConnected with origin:", orig)
+            msg_id = 1
+            payload = {"id": msg_id, "method": "Runtime.enable"}
+            ws.send(json.dumps(payload))
+            print("Runtime.enable ->", ws.recv())
+            msg_id += 1
+            payload = {"id": msg_id, "method": "Runtime.evaluate", "params": {"expression": "1+2", "returnByValue": True}}
+            ws.send(json.dumps(payload))
+            print("Runtime.evaluate ->", ws.recv())
+            ws.close()
+            break
+        except Exception as e:
+            # try next origin
+            continue
+
+if __name__ == "__main__":
+    main()