Rails controller request and response methods and instance_variables

class TestController < ApplicationController
  before_filter { |controller| p controller.request.methods.sort; p controller.request.instance_variables }
  after_filter { |controller| p controller.response.methods.sort; p controller.response.instance_variables }
  
  def index
  end
end

# ["==", "===", "=~", "__id__", "__send__", "`", "accepts", "b64encode", "blank?", "cgi", "cgi=", "class", "clone", "content_type", "cookies", "copy_instance_variables_from", "daemonize", "dclone", "decode64", "decode_b", "delete?", "display", "domain", "dup", "enable_warnings", "encode64", "env", "eql?", "equal?", "extend", "extend_with_included_modules_from", "extended_by", "formatted_post?", "freeze", "frozen?", "gem", "get?", "hash", "head?", "host", "host_with_port", "id", "inspect", "instance_eval", "instance_exec", "instance_of?", "instance_values", "instance_variable_get", "instance_variable_set", "instance_variables", "is_a?", "kind_of?", "load", "method", "method_missing", "methods", "nil?", "object_id", "parameters", "path", "path_parameters", "path_parameters=", "port", "port_string", "post?", "post_format", "pretty_inspect", "pretty_print", "pretty_print_cycle", "pretty_print_inspect", "pretty_print_instance_variables", "private_methods", "protected_methods", "protocol", "public_methods", "put?", "query_parameters", "query_string", "raw_post", "relative_url_root", "relative_url_root=", "remote_ip", "remove_subclasses_of", "request_parameters", "request_uri", "require", "require_gem", "require_library_or_gem", "reset_session", "respond_to?", "returning", "send", "server_software", "session", "session=", "session_options", "session_options=", "silence_stderr", "silence_stream", "silence_warnings", "singleton_methods", "ssl?", "standard_port", "subclasses_of", "subdomains", "suppress", "symbolized_path_parameters", "taguri", "taguri=", "taint", "tainted?", "to_a", "to_json", "to_param", "to_s", "to_yaml", "to_yaml_properties", "to_yaml_style", "type", "unloadable", "untaint", "with_options", "xhr?", "xml_http_request?", "xml_post?", "yaml_post?"]
# ["@session", "@request_method", "@query_parameters", "@parameters", "@content_type", "@request_parameters", "@session_options", "@session_options_with_string_keys", "@symbolized_path_parameters", "@env", "@cgi", "@path_parameters"]
# ["==", "===", "=~", "__id__", "__send__", "`", "assigns", "assigns=", "b64encode", "blank?", "body", "body=", "charset", "charset=", "class", "clone", "content_type", "content_type=", "cookies", "cookies=", "copy_instance_variables_from", "daemonize", "dclone", "decode64", "decode_b", "display", "dup", "enable_warnings", "encode64", "eql?", "equal?", "extend", "extend_with_included_modules_from", "extended_by", "freeze", "frozen?", "gem", "hash", "headers", "headers=", "id", "inspect", "instance_eval", "instance_exec", "instance_of?", "instance_values", "instance_variable_get", "instance_variable_set", "instance_variables", "is_a?", "kind_of?", "layout", "layout=", "load", "method", "methods", "nil?", "object_id", "out", "pretty_inspect", "pretty_print", "pretty_print_cycle", "pretty_print_inspect", "pretty_print_instance_variables", "private_methods", "protected_methods", "public_methods", "redirect", "redirected_to", "redirected_to=", "redirected_to_method_params", "redirected_to_method_params=", "remove_subclasses_of", "require", "require_gem", "require_library_or_gem", "respond_to?", "returning", "send", "session", "session=", "silence_stderr", "silence_stream", "silence_warnings", "singleton_methods", "subclasses_of", "suppress", "taguri", "taguri=", "taint", "tainted?", "template", "template=", "to_a", "to_json", "to_param", "to_s", "to_yaml", "to_yaml_properties", "to_yaml_style", "type", "unloadable", "untaint", "with_options"]
# ["@session", "@headers", "@assigns", "@body", "@redirected_to", "@cgi", "@template"]