add zeroconf discovery

docker/Dockerfile.base

@@ -30,6 +30,7 @@ RUN apt-get -qq update \
 
 RUN pip3 install \
  peewee \
+ zeroconf \
  voluptuous
 
 COPY nginx/nginx.conf /etc/nginx/nginx.conf

frigate/app.py

@@ -20,6 +20,7 @@
 from frigate.record import RecordingMaintainer
 from frigate.video import capture_camera, track_camera
 from frigate.watchdog import FrigateWatchdog
+from frigate.zeroconf import broadcast_zeroconf
 
 logger = logging.getLogger(__name__)
 
@@ -152,6 +153,7 @@ def start(self):
  self.start_event_cleanup()
  self.start_recording_maintainer()
  self.start_watchdog()
+ self.zeroconf = broadcast_zeroconf(self.config.mqtt.client_id)
  self.flask_app.run(host='127.0.0.1', port=5001, debug=False)
  self.stop()
 

frigate/zeroconf.py

@@ -0,0 +1,58 @@
+import logging
+import socket
+
+from zeroconf import (
+ ServiceInfo,
+ NonUniqueNameException,
+ InterfaceChoice,
+ IPVersion,
+ Zeroconf,
+)
+
+logger = logging.getLogger(__name__)
+
+ZEROCONF_TYPE = "_frigate._tcp.local."
+
+# Taken from: http:https://stackoverflow.com/a/11735897
+def get_local_ip() -> str:
+ """Try to determine the local IP address of the machine."""
+ try:
+ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+ # Use Google Public DNS server to determine own IP
+ sock.connect(("8.8.8.8", 80))
+
+ return sock.getsockname()[0] # type: ignore
+ except OSError:
+ try:
+ return socket.gethostbyname(socket.gethostname())
+ except socket.gaierror:
+ return "127.0.0.1"
+ finally:
+ sock.close()
+
+def broadcast_zeroconf(frigate_id):
+ zeroconf = Zeroconf(interfaces=InterfaceChoice.Default, ip_version=IPVersion.V4Only)
+
+ host_ip = get_local_ip()
+
+ try:
+ host_ip_pton = socket.inet_pton(socket.AF_INET, host_ip)
+ except OSError:
+ host_ip_pton = socket.inet_pton(socket.AF_INET6, host_ip)
+
+ info = ServiceInfo(
+ ZEROCONF_TYPE,
+ name=f"{frigate_id}.{ZEROCONF_TYPE}",
+ addresses=[host_ip_pton],
+ port=5000,
+ )
+
+ logger.info("Starting Zeroconf broadcast")
+ try:
+ zeroconf.register_service(info)
+ except NonUniqueNameException:
+ logger.error(
+ "Frigate instance with identical name present in the local network"
+ )
+ return zeroconf