Class: HTTP::Message::Headers

Inherits:
Object
  • Object
show all
Defined in:
lib/httpclient/http.rb

Overview

Represents HTTP message header.

Constant Summary collapse

STATUS_CODE_MAP =

HTTP response status code to reason phrase mapping definition.

{
  Status::OK => 'OK',
  Status::CREATED => "Created",
  Status::NON_AUTHORITATIVE_INFORMATION => "Non-Authoritative Information",
  Status::NO_CONTENT => "No Content",
  Status::RESET_CONTENT => "Reset Content",
  Status::PARTIAL_CONTENT => "Partial Content",
  Status::MOVED_PERMANENTLY => 'Moved Permanently',
  Status::FOUND => 'Found',
  Status::SEE_OTHER => 'See Other',
  Status::TEMPORARY_REDIRECT => 'Temporary Redirect',
  Status::MOVED_TEMPORARILY => 'Temporary Redirect',
  Status::BAD_REQUEST => 'Bad Request',
  Status::INTERNAL => 'Internal Server Error',
}
CHARSET_MAP =

$KCODE to charset mapping definition.

{
  'NONE' => 'us-ascii',
  'EUC'  => 'euc-jp',
  'SJIS' => 'shift_jis',
  'UTF8' => 'utf-8',
}
NIL_URI =

Placeholder URI object for nil uri.

HTTPClient::Util.urify('http://nil-uri-given/')

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Headers

Creates a Message::Headers. Use init_request, init_response, or init_connect_request for acutual initialize.



162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
 
# File 'lib/httpclient/http.rb', line 162

def initialize
  @http_version = '1.1'
  @body_size = nil
  @chunked = false

  @request_method = nil
  @request_uri = nil
  @request_query = nil
  @request_absolute_uri = nil

  @status_code = nil
  @reason_phrase = nil

  @body_type = nil
  @body_charset = nil
  @body_date = nil
  @body_encoding = nil

  @is_request = nil
  @header_item = []
  @dumped = false
end

Instance Attribute Details

#body_charset ⇒ Object

Used for dumping response.



129
130
131
 
# File 'lib/httpclient/http.rb', line 129

def body_charset
  @body_charset
end

#body_date ⇒ Object

Used for dumping response.



131
132
133
 
# File 'lib/httpclient/http.rb', line 131

def body_date
  @body_date
end

#body_encoding ⇒ Object (readonly)

Used for keeping content encoding.



133
134
135
 
# File 'lib/httpclient/http.rb', line 133

def body_encoding
  @body_encoding
end

#body_size ⇒ Object

Size of body. nil when size is unknown (e.g. chunked response).



108
109
110
 
# File 'lib/httpclient/http.rb', line 108

def body_size
  @body_size
end

#body_type ⇒ Object

Used for dumping response.



127
128
129
 
# File 'lib/httpclient/http.rb', line 127

def body_type
  @body_type
end

#chunked ⇒ Object

Request/Response is chunked or not.



110
111
112
 
# File 'lib/httpclient/http.rb', line 110

def chunked
  @chunked
end

#http_version ⇒ Object

HTTP version in a HTTP header. String.



106
107
108
 
# File 'lib/httpclient/http.rb', line 106

def http_version
  @http_version
end

#reason_phrase ⇒ Object

Response only. HTTP status reason phrase.



124
125
126
 
# File 'lib/httpclient/http.rb', line 124

def reason_phrase
  @reason_phrase
end

#request_absolute_uri ⇒ Object

Request only. Requested via proxy or not.



119
120
121
 
# File 'lib/httpclient/http.rb', line 119

def request_absolute_uri
  @request_absolute_uri
end

#request_method ⇒ Object (readonly)

Request only. Requested method.



113
114
115
 
# File 'lib/httpclient/http.rb', line 113

def request_method
  @request_method
end

#request_query ⇒ Object

Request only. Requested query.



117
118
119
 
# File 'lib/httpclient/http.rb', line 117

def request_query
  @request_query
end

#request_uri ⇒ Object

Request only. Requested URI.



115
116
117
 
# File 'lib/httpclient/http.rb', line 115

def request_uri
  @request_uri
end

#status_code ⇒ Object

Response only. HTTP status



122
123
124
 
# File 'lib/httpclient/http.rb', line 122

def status_code
  @status_code
end

Instance Method Details

#[](key) ⇒ Object

Returns an Array of header values for the given key.



323
324
325
 
# File 'lib/httpclient/http.rb', line 323

def [](key)
  get(key).collect { |item| item[1] }
end

#[]=(key, value) ⇒ Object

Adds a header. See set.



318
319
320
 
# File 'lib/httpclient/http.rb', line 318

def []=(key, value)
  set(key, value)
end

#add(key, value) ⇒ Object

Adds a header. Addition order is preserved.



278
279
280
281
282
283
284
285
286
 
# File 'lib/httpclient/http.rb', line 278

def add(key, value)
  if value.is_a?(Array)
    value.each do |v|
      @header_item.push([key, v])
    end
  else
    @header_item.push([key, value])
  end
end

#all ⇒ Object

Returns an Array of all headers.



307
308
309
 
# File 'lib/httpclient/http.rb', line 307

def all
  @header_item
end

#content_type ⇒ Object Also known as: contenttype

Returns ‘Content-Type’ header value.



225
226
227
 
# File 'lib/httpclient/http.rb', line 225

def content_type
  self['Content-Type'][0]
end

#content_type=(content_type) ⇒ Object Also known as: contenttype=

Sets ‘Content-Type’ header value. Overrides if already exists.



230
231
232
233
 
# File 'lib/httpclient/http.rb', line 230

def content_type=(content_type)
  delete('Content-Type')
  self['Content-Type'] = content_type
end

#create_query_part ⇒ Object 



346
347
348
349
350
351
352
353
354
355
356
357
358
359
 
# File 'lib/httpclient/http.rb', line 346

def create_query_part()
  query_str = nil
  if @request_uri.query
    query_str = @request_uri.query
  end
  if @request_query
    if query_str
      query_str += "&#{Message.create_query_part_str(@request_query)}"
    else
      query_str = Message.create_query_part_str(@request_query)
    end
  end
  query_str
end

#create_query_uri ⇒ Object 



334
335
336
337
338
339
340
341
342
343
344
 
# File 'lib/httpclient/http.rb', line 334

def create_query_uri()
  if @request_method == 'CONNECT'
    return "#{@request_uri.host}:#{@request_uri.port}"
  end
  path = @request_uri.path
  path = '/' if path.nil? or path.empty?
  if query_str = create_query_part()
    path += "?#{query_str}"
  end
  path
end

#delete(key) ⇒ Object

Deletes headers of the given key.



312
313
314
315
 
# File 'lib/httpclient/http.rb', line 312

def delete(key)
  key = key.upcase
  @header_item.delete_if { |k, v| k.upcase == key }
end

#dump ⇒ Object

Dumps message header part and returns a dumped String.



259
260
261
262
263
264
265
266
267
268
269
270
 
# File 'lib/httpclient/http.rb', line 259

def dump
  set_header
  str = nil
  if @is_request
    str = request_line
  else
    str = response_status_line
  end
  str + @header_item.collect { |key, value|
    "#{ key }: #{ value }#{ CRLF }"
  }.join
end

#get(key = nil) ⇒ Object

Returns an Array of headers for the given key. Each element is a pair of key and value. It returns an single element Array even if the only one header exists. If nil key given, it returns all headers.



297
298
299
300
301
302
303
304
 
# File 'lib/httpclient/http.rb', line 297

def get(key = nil)
  if key.nil?
    all
  else
    key = key.upcase
    @header_item.find_all { |k, v| k.upcase == key }
  end
end

#init_connect_request(uri) ⇒ Object

Initialize this instance as a CONNECT request.



186
187
188
189
190
191
192
 
# File 'lib/httpclient/http.rb', line 186

def init_connect_request(uri)
  @is_request = true
  @request_method = 'CONNECT'
  @request_uri = uri
  @request_query = nil
  @http_version = '1.0'
end

#init_request(method, uri, query = nil) ⇒ Object

Initialize this instance as a general request.



197
198
199
200
201
202
203
204
 
# File 'lib/httpclient/http.rb', line 197

def init_request(method, uri, query = nil)
  @is_request = true
  @request_method = method
  @request_uri = uri || NIL_URI
  @request_query = query
  @request_absolute_uri = false
  self
end

#init_response(status_code, req = nil) ⇒ Object

Initialize this instance as a response.



207
208
209
210
211
212
213
214
215
216
 
# File 'lib/httpclient/http.rb', line 207

def init_response(status_code, req = nil)
  @is_request = false
  self.status_code = status_code
  if req
    @request_method = req.request_method
    @request_uri = req.request_uri
    @request_query = req.request_query
  end
  self
end

#set(key, value) ⇒ Object

Sets a header.



289
290
291
292
 
# File 'lib/httpclient/http.rb', line 289

def set(key, value)
  delete(key)
  add(key, value)
end

#set_body_encoding ⇒ Object 



239
240
241
242
243
244
245
 
# File 'lib/httpclient/http.rb', line 239

def set_body_encoding
  if type = self.content_type
    OpenURI::Meta.init(o = '')
    o.meta_add_field('content-type', type)
    @body_encoding = o.encoding
  end
end

#set_date_header ⇒ Object

Set Date header



273
274
275
 
# File 'lib/httpclient/http.rb', line 273

def set_date_header
  set('Date', Time.now.httpdate)
end

#set_headers(headers) ⇒ Object 



327
328
329
330
331
332
 
# File 'lib/httpclient/http.rb', line 327

def set_headers(headers)
  headers.each do |key, value|
    add(key, value)
  end
  set_body_encoding
end