From 8fd8f794a45ee9422090a0877a09d7822025ee6e Mon Sep 17 00:00:00 2001
From: Andrew Godwin <andrew@aeracode.org>
Date: Mon, 24 Jul 2017 10:41:54 -0700
Subject: [PATCH] Fixed #128: Could not use file descriptor 0

---
 daphne/server.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/daphne/server.py b/daphne/server.py
index 20b19cb..9340524 100755
--- a/daphne/server.py
+++ b/daphne/server.py
@@ -215,7 +215,7 @@ def build_endpoint_description_strings(
     if unix_socket:
         socket_descriptions.append('unix:%s' % unix_socket)
 
-    if file_descriptor:
+    if file_descriptor is not None:
         socket_descriptions.append('fd:fileno=%d' % int(file_descriptor))
 
     return socket_descriptions