Add attribute check for #31 and remove version pin

daphne/http_protocol.py

@@ -110,9 +110,9 @@ class WebRequest(http.Request):
                     logger.debug("Connection %s did not get successful WS handshake.", self.reply_channel)
                 del self.factory.reply_protocols[self.reply_channel]
                 self.reply_channel = None
-
-                # Resume the producer so we keep getting data
-                self.channel.resumeProducing()
+                # Resume the producer so we keep getting data, if it's available as a method
+                if hasattr(self.channel, "resumeProducing"):
+                    self.channel.resumeProducing()
 
             # Boring old HTTP.
             else:

setup.py

@@ -22,7 +22,7 @@ setup(
     include_package_data=True,
     install_requires=[
         'asgiref>=0.13',
-        'twisted>=15.5,<16.3',
+        'twisted>=16.0',
         'autobahn>=0.12',
     ],
     entry_points={'console_scripts': [