Example ASGI apps now ensure scope['type'] is expected message type. (#348)

docs/index.md

@@ -100,6 +100,7 @@ from starlette.responses import PlainTextResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):

docs/requests.md

@@ -13,6 +13,7 @@ from starlette.response import Response
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -95,6 +96,7 @@ from starlette.responses import Response
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):

docs/responses.md

@@ -24,6 +24,7 @@ from starlette.responses import Response
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -62,6 +63,7 @@ from starlette.responses import HTMLResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -79,6 +81,7 @@ from starlette.responses import PlainTextResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -107,6 +110,7 @@ env = Environment(loader=FileSystemLoader('templates'))
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -141,6 +145,7 @@ from starlette.responses import JSONResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -164,6 +169,7 @@ from starlette.responses import UJSONResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -181,6 +187,7 @@ from starlette.responses import PlainTextResponse, RedirectResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -210,6 +217,7 @@ async def slow_numbers(minimum, maximum):
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -237,6 +245,7 @@ from starlette.responses import FileResponse
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):

docs/testclient.md

@@ -9,6 +9,7 @@ from starlette.testclient import TestClient
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'http'
         self.scope = scope
 
     async def __call__(self, receive, send):
@@ -49,6 +50,7 @@ from starlette.websockets import WebSocket
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'websocket'
         self.scope = scope
 
     async def __call__(self, receive, send):

docs/websockets.md

@@ -12,6 +12,7 @@ from starlette.websockets import WebSocket
 
 class App:
     def __init__(self, scope):
+        assert scope['type'] == 'websocket'
         self.scope = scope
 
     async def __call__(self, receive, send):