|  AcceptHeader  |   Represents an Accept-* header.  |  
  |  AcceptHeaderItem  |   Represents an Accept-* header item.  |  
  |  ApacheRequest  |   Request represents an HTTP request from an Apache server.  |  
  |  BinaryFileResponse  |   BinaryFileResponse represents an HTTP response delivering a file.  |  
  |  Cookie  |   Represents a cookie  |  
  |  FileBag  |   FileBag is a container for HTTP headers.  |  
  |  HeaderBag  |   HeaderBag is a container for HTTP headers.  |  
  |  IpUtils  |   Http utility functions.  |  
  |  JsonResponse  |   Response represents an HTTP response in JSON format.  |  
  |  ParameterBag  |   ParameterBag is a container for key/value pairs.  |  
  |  RedirectResponse  |   RedirectResponse represents an HTTP response doing a redirect.  |  
  |  Request  |   Request represents an HTTP request.  |  
  |  RequestMatcher  |   RequestMatcher compares a pre-defined set of checks against a Request instance.  |  
  |  Response  |   Response represents an HTTP response.  |  
  |  ResponseHeaderBag  |   ResponseHeaderBag is a container for Response HTTP headers.  |  
  |  ServerBag  |   ServerBag is a container for HTTP headers from the $_SERVER variable.  |  
  |  StreamedResponse  |   StreamedResponse represents a streamed HTTP response.  |