scripts/testing: Add general "uses gzip" script

scripts/testing/gateway-responses/test-gzip-plain-json.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import json
+import requests
+import sys
+import urllib3
+import zlib
+
+if len(sys.argv) != 2:
+  print('test-sender.py <filename>')
+  sys.exit(-1)
+
+with open(sys.argv[1], 'r') as f:
+  # Read from provided file
+  msg = f.read()
+
+  # Compress it
+  msg_gzip = zlib.compress(msg.encode('utf-8'))
+
+  http = urllib3.PoolManager()
+
+  # Send that compressed data as a POST body
+  r = http.request(
+    'POST',
+    'https://dev.eddn.edcd.io:4432/upload/',
+    headers={
+      'Content-Encoding': 'gzip'
+    },
+    body=msg_gzip
+  )
+
+  print(f'Response: {r.status!r}')
+  print(f'Body:\n{r.data.decode()}\n')
+