Allow binding to UNIX sockets instead of TCP address/port.

daphne/cli.py

@@ -33,6 +33,13 @@ class CommandLineInterface(object):
             help='The host/address to bind to',
             default="127.0.0.1",
         )
+        self.parser.add_argument(
+            '-u',
+            '--unix-socket',
+            dest='unix_socket',
+            help='Bind to a UNIX socket rather than a TCP host/port',
+            default=None,
+        )
         self.parser.add_argument(
             '-v',
             '--verbosity',
@@ -83,14 +90,14 @@ class CommandLineInterface(object):
             channel_layer = getattr(channel_layer, bit)
         # Run server
         logger.info(
-            "Starting server on %s:%s, channel layer %s",
-            args.host,
-            args.port,
+            "Starting server at %s, channel layer %s",
+            (args.unix_socket if args.unix_socket else "%s:%s" % (args.host, args.port)),
             args.channel_layer,
         )
         Server(
             channel_layer=channel_layer,
             host=args.host,
             port=args.port,
+            unix_socket=args.unix_socket,
             http_timeout=args.http_timeout,
         ).run()

daphne/server.py

@@ -13,6 +13,7 @@ class Server(object):
         channel_layer,
         host="127.0.0.1",
         port=8000,
+        unix_socket=None,
         signal_handlers=True,
         action_logger=None,
         http_timeout=120,
@@ -21,6 +22,7 @@ class Server(object):
         self.channel_layer = channel_layer
         self.host = host
         self.port = port
+        self.unix_socket = unix_socket
         self.signal_handlers = signal_handlers
         self.action_logger = action_logger
         self.http_timeout = http_timeout
@@ -35,6 +37,9 @@ class Server(object):
             timeout=self.http_timeout,
             websocket_timeout=self.websocket_timeout,
         )
+        if self.unix_socket:
+            reactor.listenUNIX(self.unix_socket, self.factory)
+        else:
             reactor.listenTCP(self.port, self.factory, interface=self.host)
         reactor.callLater(0, self.backend_reader)
         reactor.callLater(2, self.timeout_checker)