class Net::HTTPResponse

HTTP response class.

This class wraps together the response header and the response body (the entity requested).

It mixes in the HTTPHeader module, which provides access to response header values both via hash-like methods and via individual readers.

Note that each possible HTTP response code defines its own HTTPResponse subclass. All classes are defined under the Net module. Indentation indicates inheritance. For a list of the classes see Net::HTTP.

Correspondence HTTP code => class is stored in CODE_TO_OBJ constant:

Net::HTTPResponse::CODE_TO_OBJ['404'] #=> Net::HTTPNotFound

Constants

CODE_CLASS_TO_OBJ
CODE_TO_OBJ

Attributes

body_encoding[R]

The encoding to use for the response body. If Encoding, use that encoding. If other true value, attempt to detect the appropriate encoding, and use that.

code[R]

The HTTP result code string. For example, ‘302’. You can also determine the response type by examining which response subclass the response object is an instance of.

decode_content[RW]

Set to true automatically when the request did not contain an Accept-Encoding header from the user.

http_version[R]

The HTTP version supported by the server.

ignore_eof[RW]

Whether to ignore EOF when reading bodies with a specified Content-Length header.

message[R]

The HTTP result message sent by the server. For example, ‘Not Found’.

msg[R]

The HTTP result message sent by the server. For example, ‘Not Found’.

uri[R]

The URI used to fetch this response. The response URI is only available if a URI was used to create the request.

Public Class Methods

body_permitted?() click to toggle source

true if the response has a body.

# File net/http/response.rb, line 22
def body_permitted?
  self::HAS_BODY
end

Private Class Methods

each_response_header(sock) { |key, value| ... } click to toggle source

# File net/http/response.rb, line 54
def each_response_header(sock)
  key = value = nil
  while true
    line = sock.readuntil("\n", true).sub(/\s+\z/, '')
    break if line.empty?
    if line[0] == ?\s or line[0] == ?\t and value
      value << ' ' unless value.empty?
      value << line.strip
    else
      yield key, value if key
      key, value = line.strip.split(/\s*:\s*/, 2)
      raise Net::HTTPBadResponse, 'wrong header line format' if value.nil?
    end
  end
  yield key, value if key
end

read_status_line(sock) click to toggle source

# File net/http/response.rb, line 41
def read_status_line(sock)
  str = sock.readline
  m = /\AHTTP(?:\/(\d+\.\d+))?\s+(\d\d\d)(?:\s+(.*))?\z/in.match(str) or
    raise Net::HTTPBadResponse, "wrong status line: #{str.dump}"
  m.captures
end

response_class(code) click to toggle source

# File net/http/response.rb, line 48
def response_class(code)
  CODE_TO_OBJ[code] or
  CODE_CLASS_TO_OBJ[code[0,1]] or
  Net::HTTPUnknownResponse
end

Public Instance Methods

body() click to toggle source

Returns the full entity body.

Calling this method a second or subsequent time will return the string already read.

http.request_get('/index.html') {|res|
  puts res.body
}

http.request_get('/index.html') {|res|
  p res.body.object_id   # 538149362
  p res.body.object_id   # 538149362
}

# File net/http/response.rb, line 263
def body
  read_body()
end

Also aliased as: entity

body=(value) click to toggle source

Because it may be necessary to modify the body, Eg, decompression this method facilitates that.

# File net/http/response.rb, line 269
def body=(value)
  @body = value
end

body_encoding=(value) click to toggle source

Set the encoding to use for the response body. If given a String, find the related Encoding.

# File net/http/response.rb, line 118
def body_encoding=(value)
  value = Encoding.find(value) if value.is_a?(String)
  @body_encoding = value
end

entity()

Alias for: body

inspect() click to toggle source

# File net/http/response.rb, line 127
def inspect
  "#<#{self.class} #{@code} #{@message} readbody=#{@read}>"
end

read_body(dest = nil, &block) click to toggle source

Gets the entity body returned by the remote HTTP server.

If a block is given, the body is passed to the block, and the body is provided in fragments, as it is read in from the socket.

If dest argument is given, response is read into that variable, with dest#<< method (it could be String or IO, or any other object responding to <<).

Calling this method a second or subsequent time for the same HTTPResponse object will return the value already read.

http.request_get('/index.html') {|res|
  puts res.read_body
}

http.request_get('/index.html') {|res|
  p res.read_body.object_id   # 538149362
  p res.read_body.object_id   # 538149362
}

# using iterator
http.request_get('/index.html') {|res|
  res.read_body do |segment|
    print segment
  end
}

# File net/http/response.rb, line 220
def read_body(dest = nil, &block)
  if @read
    raise IOError, "#{self.class}\#read_body called twice" if dest or block
    return @body
  end
  to = procdest(dest, block)
  stream_check
  if @body_exist
    read_body_0 to
    @body = to
  else
    @body = nil
  end
  @read = true

  case enc = @body_encoding
  when Encoding, false, nil
    # Encoding: force given encoding
    # false/nil: do not force encoding
  else
    # other value: detect encoding from body
    enc = detect_encoding(@body)
  end

  @body.force_encoding(enc) if enc

  @body
end

value() click to toggle source

Raises an HTTP error if the response is not 2xx (success).

# File net/http/response.rb, line 150
def value
  error! unless self.kind_of?(Net::HTTPSuccess)
end