Update app.py

app.py

@@ -217,13 +217,25 @@ app = gr.mount_gradio_app(app, demo, path="/")
 
 print("Application startup script finished. Waiting for requests.")
 if __name__ == "__main__":
-    import uvicorn
-    port_env = int(os.getenv("PORT", "7860"))
-    try:
-        uvicorn.run(app, host="0.0.0.0", port=port_env, workers=1, log_level="info")
-    except OSError as e:
-        if e.errno == 98 and port_env != 7860:
-            print(f"⚠️ Port {port_env} busy → falling back to 7860")
-            uvicorn.run(app, host="0.0.0.0", port=7860, workers=1, log_level="info")
-        else:
-            raise
+    import os, time, socket, uvicorn
+
+    def port_is_free(port: int) -> bool:
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+            return s.connect_ex(("0.0.0.0", port)) != 0
+
+    port = int(os.getenv("PORT", 7860))
+    timeout_sec = 30          # 30 秒だけ待つ
+    poll_interval = 2         # 2 秒ごとに再チェック
+
+    t0 = time.time()
+    while not port_is_free(port):
+        waited = time.time() - t0
+        if waited >= timeout_sec:
+            raise RuntimeError(f"Port {port} is still busy after {timeout_sec}s")
+        print(f"⚠️ Port {port} busy, retrying in {poll_interval}s …")
+        time.sleep(poll_interval)
+
+    # 空いたら起動
+    uvicorn.run(
+        app, host="0.0.0.0", port=port,
+        workers=1, log_level="info"