show a more friendly error when a server that is not compatible with …

…gevent-socketio is used
miguelgrinberg · Apr 27, 2014 · a58879f · a58879f
1 parent 9300885
commit a58879f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/flask_socketio/__init__.py b/flask_socketio/__init__.py
@@ -21,6 +21,8 @@ def __init__(self, app, socket):
     def __call__(self, environ, start_response):
         path = environ['PATH_INFO'].strip('/')
         if path is not None and path.startswith('socket.io'):
+            if 'socketio' not in environ:
+                raise RuntimeError('You need to use a gevent-socketio server.')
             socketio_manage(environ, self.socket.get_namespaces(), self.app,
                             json_loads=json.loads, json_dumps=json.dumps)
         else: