如何在WSGI中间件中添加http头？

Question

如何在WSGI中间件中添加http标头？

Answer 1

我从塔的书中找到了一个很好的例子.

class Middleware(object):
    def __init__(self, app):
        self.app = app

    def __call__(self, environ, start_response):

        def custom_start_response(status, headers, exc_info=None):
            headers.append(('Set-Cookie', "name=value"))
            return start_response(status, headers, exc_info)

        return self.app(environ, custom_start_response)

诀窍是使用嵌套方法.