Fix ip response

app.py

@@ -11,8 +11,13 @@ class GetClientIpMixin:
         for header_name in ('x-real-ip', 'x-forwarded-for'):
             candidate_ip = None
             header_value = request.headers.get(header_name)
+            if not header_value:
+                continue
             for ip in header_value.split(',')[::-1]:
-                candidate_ip = ip_address(ip.strip())
+                try:
+                    candidate_ip = ip_address(ip.strip())
+                except ValueError:
+                    continue
                 if candidate_ip.is_global:
                     break
             if candidate_ip:
@@ -48,8 +53,8 @@ if __name__ == '__main__':
     import os
     from argparse import ArgumentParser
 
-    default_host = os.environ.get('APP_HOST', 'localhost')
-    default_port = int(os.environ.get('APP_PORT', 8081))
+    default_host = os.environ.get('APP_HOST', '0.0.0.0')
+    default_port = int(os.environ.get('APP_PORT', 8080))
     default_trusted = os.environ.get('TRUSTED_PROXIES') or None
 
     parser = ArgumentParser('app.py')
@@ -58,5 +63,5 @@ if __name__ == '__main__':
     parser.add_argument('--proxies', type=str, help='A list of trusted proxies, comma separated. you can use CIDRs.', default=default_trusted)
     args = parser.parse_args()
 
-    txip = Application(args)
-    txip.run()
+    zero_if = Application(args)
+    zero_if.run()