响应头名称大写¶
Falcon始终以小写形式呈现WSGI响应标头名称;另请参阅: 为什么Falcon要把我的标题名改成小写?
对于符合标准的HTTP客户端来说,这通常不会成为问题,但是可以使用 generic WSGI middleware :
class CustomHeadersMiddleware:
def __init__(self, app, title_case=True, custom_capitalization=None):
self._app = app
self._title_case = title_case
self._capitalization = custom_capitalization or {}
def __call__(self, environ, start_response):
def start_response_wrapper(status, response_headers, exc_info=None):
if self._title_case:
headers = [
(self._capitalization.get(name, name.title()), value)
for name, value in response_headers]
else:
headers = [
(self._capitalization.get(name, name), value)
for name, value in response_headers]
start_response(status, headers, exc_info)
return self._app(environ, start_response_wrapper)
我们现在可以使用此中间件包装Falcon应用程序:
import falcon
# Import or define CustomHeadersMiddleware from the above snippet...
class FunkyResource:
def on_get(self, req, resp):
resp.set_header('X-Funky-Header', 'test')
resp.media = {'message': 'Hello'}
app = falcon.App()
app.add_route('/test', FunkyResource())
app = CustomHeadersMiddleware(
app,
custom_capitalization={'x-funky-header': 'X-FuNkY-HeADeR'},
)
作为一个额外的好处,这个配方也适用于非FalconWSGi应用程序。