zoukankan      html  css  js  c++  java
  • Django WSGI响应过程之WSGIHandler

    class WSGIHandler(base.BaseHandler):
        request_class = WSGIRequest
    
        def __init__(self, *args, **kwargs):
            super().__init__(*args, **kwargs)
            self.load_middleware() #载入中间件装饰器
    
        def __call__(self, environ, start_response):#每次请求被调用
            set_script_prefix(get_script_name(environ))
            signals.request_started.send(sender=self.__class__, environ=environ)
            request = self.request_class(environ)  #获取WSGIrequest对象,保存header
            response = self.get_response(request)  #获取response对象,见下方
    
            response._handler_class = self.__class__
    
            status = '%d %s' % (response.status_code, response.reason_phrase)   #准备返回状态
            response_headers = [
                *response.items(),
                *(('Set-Cookie', c.output(header='')) for c in response.cookies.values()),
            ]  #准备返回header
            start_response(status, response_headers)  #返回响应体
            if getattr(response, 'file_to_stream', None) is not None and environ.get('wsgi.file_wrapper'):
                response = environ['wsgi.file_wrapper'](response.file_to_stream)
            return response
    handlers/base中:
    def get_response(self, request):
        """Return an HttpResponse object for the given HttpRequest."""
        # Setup default url resolver for this thread
        set_urlconf(settings.ROOT_URLCONF)  #设置urls/base.py中的_urlconf.value
        response = self._middleware_chain(request)  #依次调用中间件后返回response
        response._closable_objects.append(request)
        if response.status_code >= 400: #异常处理
            log_response(
                '%s: %s', response.reason_phrase, request.path,
                response=response,
                request=request,
            )
        return response
  • 相关阅读:
    zzuli-2259 matrix
    【vlan之四种方式链路认证组网]
    【ppp-chap,pap,mp,mp-group】
    【ospf-基础配置】
    【rip-基础配置】
    【静态路由】
    【nat---basic,napt,easy ip】
    【acl-访问控制列表】
    【交换接口的-绑定-认证-隔离】
    【vlan-给予mac地址认证】
  • 原文地址:https://www.cnblogs.com/EmptyRabbit/p/11389786.html
Copyright © 2011-2022 走看看