Add an mdns check to connected timeout

Author: davesteele

comitup/mdns.py

@@ -17,6 +17,7 @@
 from typing import TYPE_CHECKING, Dict, List, Optional
 
 import dbus
+import socket
 
 from comitup import config, nm
 
@@ -190,6 +191,22 @@ def add_hosts(hosts: List[str]) -> None:
         group.Commit()
 
 
+def check_mdns(hosts: List[str]) -> None:
+    reset = False
+
+    log.debug("Checking mdns")
+
+    try:
+        socket.gethostbyname(hosts[0])
+    except socket.gaierror:
+        reset = True
+
+    if reset:
+        log.error("Mdns check failed - resetting records and services.")
+        clear_entries(emphatic=True)
+        add_hosts(*hosts)
+
+
 if __name__ == "__main__":
     add_hosts(["comitup-1111.local", "comitup.local"])
 

comitup/states.py

@@ -296,6 +296,8 @@ def connected_timeout(dummy: int) -> None:
             log.error("AP is holding default route while CONNECTED, kicking")
             nm.disconnect(link_dev)
 
+    mdns.check_mdns(dns_names)
+
 
 #
 # State Management