some small improvements and fixes for zeroconf

ledd/daemon.py

@@ -26,7 +26,7 @@ import asyncio
 
 import spectra
 
-from zeroconf import Zeroconf
+from zeroconf import Zeroconf, ServiceInfo
 
 from ledd import controller, VERSION
 from ledd.decorators import ledd_protocol
@@ -59,8 +59,8 @@ class Daemon:
                 log.info("No config file found!")
 
             # create zeroconf service info
-            # self.zinfo = ServiceInfo("_ledd._tcp", "LedD Daemon",
-            #                         port=self.config.get(self.daemonSection, 'port', fallback=1425))
+            self.zinfo = ServiceInfo("_ledd._tcp.local.", "LedD Daemon._ledd._tcp.local.",
+                                     port=self.config.get(self.daemonSection, 'port', fallback=1425))
 
             # SQL init
             self.sqldb = sqlite3.connect(self.config.get(self.databaseSection, 'name', fallback='ledd.sqlite'))
@@ -77,7 +77,7 @@ class Daemon:
             logging.getLogger("asyncio").setLevel(logging.DEBUG)
 
             # announce server to network
-            #self.register_zeroconf()
+            self.register_zeroconf()
 
             # main loop
             self.loop = asyncio.get_event_loop()
@@ -129,13 +129,22 @@ class Daemon:
         self.check_db()
 
     def register_zeroconf(self):
+        try:
             zeroconf = Zeroconf()
             zeroconf.register_service(self.zinfo)
             log.info("Registered ledd daemon with zeroconf")
+        except OSError as e:
+            log.warning("Failed to register service with ZeroConf: %s", e)
+            pass
 
     def deregister_zeroconf(self):
+        try:
             zeroconf = Zeroconf()
             zeroconf.unregister_service(self.zinfo)
+            log.info("Unregistered ledd daemon with zeroconf")
+        except OSError as e:
+            log.warning("Failed to deregister service with ZeroConf: %s", e)
+            pass
 
     @ledd_protocol(protocol)
     def start_effect(self, req_json):