add port search

app.py

@@ -30,6 +30,25 @@ from minigpt4.processors import *
 from minigpt4.runners import *
 from minigpt4.tasks import *
 
+import socket
+import os
+
+def find_free_port(start_port, end_port):
+    for port in range(start_port, end_port + 1):
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+            if sock.connect_ex(('localhost', port)) != 0:  # Port is not open
+                return port
+    raise OSError(f"Cannot find empty port in range: {start_port}-{end_port}")
+
+def set_gradio_server_port():
+    start_port = 7870
+    end_port = 9999
+    free_port = find_free_port(start_port, end_port)
+    os.environ["GRADIO_SERVER_PORT"] = str(free_port)
+    print(f"Set GRADIO_SERVER_PORT to {free_port}")
+
+# Set GRADIO_SERVER_PORT
+set_gradio_server_port()
 
 def parse_args():
     parser = argparse.ArgumentParser(description="Demo")