1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#!/usr/bin/env python3
"""
Example for rewriting response headers by middleware.
"""
import asyncio
from aiohttp.web import Application, HTTPException, Response, run_app
@asyncio.coroutine
def handler(request):
return Response(text="Everything is fine")
@asyncio.coroutine
def middleware_factory(app, next_handler):
@asyncio.coroutine
def middleware(request):
try:
response = yield from next_handler(request)
except HTTPException as exc:
response = exc
if not response.prepared:
response.headers['SERVER'] = "Secured Server Software"
return response
return middleware
def init(loop):
app = Application(loop=loop, middlewares=[middleware_factory])
app.router.add_get('/', handler)
return app
loop = asyncio.get_event_loop()
app = init(loop)
run_app(app)
|
