Code import

venv/lib/python2.7/site-packages/engineio/middleware.py

@@ -0,0 +1,52 @@
+class Middleware(object):
+    """WSGI middleware for Engine.IO.
+
+    This middleware dispatches traffic to an Engine.IO application, and
+    optionally forwards regular HTTP traffic to a WSGI application.
+
+    :param engineio_app: The Engine.IO server.
+    :param wsgi_app: The WSGI app that receives all other traffic.
+    :param engineio_path: The endpoint where the Engine.IO application should
+                          be installed. The default value is appropriate for
+                          most cases.
+
+    Example usage::
+
+        import engineio
+        import eventlet
+        from . import wsgi_app
+
+        eio = engineio.Server()
+        app = engineio.Middleware(eio, wsgi_app)
+        eventlet.wsgi.server(eventlet.listen(('', 8000)), app)
+    """
+    def __init__(self, engineio_app, wsgi_app=None, engineio_path='engine.io'):
+        self.engineio_app = engineio_app
+        self.wsgi_app = wsgi_app
+        self.engineio_path = engineio_path.strip('/')
+
+    def __call__(self, environ, start_response):
+        if 'gunicorn.socket' in environ:
+            # gunicorn saves the socket under environ['gunicorn.socket'], while
+            # eventlet saves it under environ['eventlet.input']. Eventlet also
+            # stores the socket inside a wrapper class, while gunicon writes it
+            # directly into the environment. To give eventlet's WebSocket
+            # module access to this socket when running under gunicorn, here we
+            # copy the socket to the eventlet format.
+            class Input(object):
+                def __init__(self, socket):
+                    self.socket = socket
+
+                def get_socket(self):
+                    return self.socket
+
+            environ['eventlet.input'] = Input(environ['gunicorn.socket'])
+        path = environ['PATH_INFO']
+        if path is not None and \
+                path.startswith('/{0}/'.format(self.engineio_path)):
+            return self.engineio_app.handle_request(environ, start_response)
+        elif self.wsgi_app is not None:
+            return self.wsgi_app(environ, start_response)
+        else:
+            start_response("404 Not Found", [('Content-type', 'text/plain')])
+            return ['Not Found']