IPv6 support for listening on (#1267)

.github/workflows/test-only.yml

@@ -68,6 +68,9 @@ jobs:
           # Should return 0 (no error) when grep finds it
           curl -s http://localhost:5556 |grep -q checkbox-uuid
           curl -s http://localhost:5556/rss|grep -q rss-specification
+          # and IPv6
+          curl -s -g -6 "http://[::1]:5556"|grep -q checkbox-uuid
+          curl -s -g -6 "http://[::1]:5556/rss"|grep -q rss-specification
 
 #export WEBDRIVER_URL=http://localhost:4444/wd/hub
 #pytest tests/fetchers/test_content.py

changedetectionio/changedetection.py

@@ -9,6 +9,7 @@ import getopt
 import os
 import signal
 import sys
+import socket
 
 from . import store, changedetection_app, content_fetcher
 from . import __version__
@@ -126,11 +127,11 @@ def main():
 
     if ssl_mode:
         # @todo finalise SSL config, but this should get you in the right direction if you need it.
-        eventlet.wsgi.server(eventlet.wrap_ssl(eventlet.listen((host, port)),
+        eventlet.wsgi.server(eventlet.wrap_ssl(eventlet.listen((host, port), socket.AF_INET6),
                                                certfile='cert.pem',
                                                keyfile='privkey.pem',
                                                server_side=True), app)
 
     else:
-        eventlet.wsgi.server(eventlet.listen((host, int(port))), app)
+        eventlet.wsgi.server(eventlet.listen((host, int(port)), socket.AF_INET6), app)