fixup! Different rate limits depending on HTTP method (#5555)

Author: dsotirho-ucsc

terraform/api_gateway.tf.json.template.py

@@ -2,9 +2,13 @@
     dataclass,
 )
 import importlib
+import ipaddress
 import json
 import logging
 
+from furl import (
+    furl,
+)
 from more_itertools import (
     one,
 )
@@ -124,11 +128,15 @@ def public_ip() -> str:
     """
     Return the public IPv4 address of the machine running this code.
     """
-    url = 'https://checkip.amazonaws.com'
+    url = furl('https://checkip.amazonaws.com')
     http = http_client(log)
-    response = http.request('GET', url)
+    response = http.request('GET', str(url))
     assert response.status == 200, R('Unexpected response', response)
-    ip_address = response.data.decode().strip()
+    ip_address = response.data.decode().strip() + '.0'
+    try:
+        ipaddress.IPv4Address(ip_address)
+    except ipaddress.AddressValueError as e:
+        raise ValueError('Not a valid IPv4 address', ip_address) from e
     return ip_address