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Class: Rack::ContentLength

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, Utils
Inherits: Object
Defined in: lib/rack/content_length.rb

Overview

Sets the content-length header on responses that do not specify a content-length or transfer-encoding header. Note that this does not fix responses that have an invalid content-length header specified.

Constant Summary

Utils - Included

ALLOWED_FORWARDED_PARAMS, COMMON_SEP, DEFAULT_SEP, HTTP_STATUS_CODES, InvalidParameterError, KeySpaceConstrainedParams, NULL_BYTE, OBSOLETE_SYMBOLS_TO_STATUS_CODES, OBSOLETE_SYMBOL_MAPPINGS, PATH_SEPS, ParameterTypeError, ParamsTooDeepError, STATUS_WITH_NO_ENTITY_BODY, SYMBOL_TO_STATUS_CODE, URI_PARSER, VALID_COOKIE_KEY

Class Method Summary

Instance Method Summary

Utils - Included

#best_q_match

Return best accept value to use, based on the algorithm in RFC 2616 Section 14.
#build_nested_query, #build_query,
#byte_ranges

Parses the “Range:” header, if present, into an array of Range objects.
#clean_path_info,
#clock_time

:nocov:
#delete_cookie_header!,
#delete_set_cookie_header

Generate an encoded string based on the given key and value using set_cookie_header for the purpose of causing the specified cookie to be deleted.
#delete_set_cookie_header!

Set an expired cookie in the specified headers with the given cookie key and value using delete_set_cookie_header.
#escape

URI escapes.
#escape_html

Escape ampersands, brackets and quotes to their HTML/XML entities.
#escape_path

Like URI escaping, but with %20 instead of +.
#forwarded_values, #get_byte_ranges,
#parse_cookies

Parse cookies from the provided request environment using parse_cookies_header.
#parse_cookies_header

Parse cookies from the provided header value according to RFC6265.
#parse_nested_query, #parse_query, #q_values, #rfc2822,
#secure_compare

Constant time string comparison.
#select_best_encoding

Given an array of available encoding strings, and an array of acceptable encodings for a request, where each element of the acceptable encodings array is an array where the first element is an encoding name and the second element is the numeric priority for the encoding, return the available encoding with the highest priority.
#set_cookie_header

Generate an encoded string using the provided key and value suitable for the set-cookie header according to RFC6265.
#set_cookie_header!

Append a cookie in the specified headers with the given cookie key and value using set_cookie_header.
#status_code,
#unescape

Unescapes a URI escaped string with encoding.
#unescape_path

Unescapes the path component of a URI.
#valid_path?

Constructor Details

.new(app) ⇒ ContentLength

[ GitHub ] 

  


# File 'lib/rack/content_length.rb', line 15



def initialize(app)
  @app = app
end


  







Instance Method Details



  

    #call(env)  
  

  [ GitHub ]


  

  


# File 'lib/rack/content_length.rb', line 19



def call(env)
  status, headers, body = response = @app.call(env)

  if !STATUS_WITH_NO_ENTITY_BODY.key?(status.to_i) &&
     !headers[CONTENT_LENGTH] &&
     !headers[TRANSFER_ENCODING] &&
     body.respond_to?(:to_ary)

    response[2] = body = body.to_ary
    headers[CONTENT_LENGTH] = body.sum(&:bytesize).to_s
  end

  response
end