Class: AVP

Inherits:
Object
  • Object
show all
Includes:
AVPParser, AVPType
Defined in:
lib/diameter/avp.rb

Overview

Represents a Diameter AVP. Use this for non-vendor-specific AVPs, and its subclass VendorSpecificAVP for ones defined for a particular vendor.

Direct Known Subclasses

VendorSpecificAVP

Constant Summary

Constant Summary

Constants included from AVPType

AVPType::GROUPED, AVPType::IPADDR, AVPType::OCTETSTRING, AVPType::U32

Instance Attribute Summary (collapse)

Data getters/setters for different AVP types (collapse)

Class Method Summary (collapse)

Instance Method Summary (collapse)

Methods included from AVPParser

mandatory_bit, parse_avps_int, vendor_id_bit

Constructor Details

- (AVP) initialize(code, options = {})

Returns a new instance of AVP



88
89
90
91
92
93
# File 'lib/diameter/avp.rb', line 88

def initialize(code, options = {})
  @code = code
  @content = options[:content] || ''
  @mandatory = options[:mandatory]
  @mandatory = true if @mandatory.nil?
end

Instance Attribute Details

- (Fixnum) code (readonly)

Returns The AVP Code

Returns:

  • (Fixnum)

    The AVP Code



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
# File 'lib/diameter/avp.rb', line 82

class AVP
  include AVPType
  attr_reader :code, :mandatory

  include AVPParser

  def initialize(code, options = {})
    @code = code
    @content = options[:content] || ''
    @mandatory = options[:mandatory]
    @mandatory = true if @mandatory.nil?
  end

  # Creates an AVP by name, and assigns it a value.
  #
  # @param name The name of the AVP, e.g. "Origin-Host"
  # @param val The value of the AVP. Must be of the type defined for
  #   that AVP - e.g. a Fixnum for an AVP defined as Unsigned32, a
  #   String for an AVP defined as OctetString, or an IPAddr for an AVP
  #   defined as IPAddress.
  # @return [AVP] The AVP that was created.
  def self.create(name, val, options={})
    code, type, vendor = AVPNames.get(name)
    avp = if (vendor != 0)
            VendorSpecificAVP.new(code, vendor, options)
          else
            AVP.new(code, options)
          end

    set_content(avp, type, val)

    avp
  end

  # Returns this AVP encoded properly as bytes in network byte order,
  # suitable for sending over a TCP or SCTP connection. See
  # {http://tools.ietf.org/html/rfc6733#section-4.1} for the
  # format.
  #
  # @return [String] The bytes representing this AVP
  def to_wire
    length_8, length_16 = UInt24.to_u8_and_u16(@content.length + 8)
    avp_flags = @mandatory ? '01000000' : '00000000'
    header = [@code, avp_flags, length_8, length_16].pack('NB8Cn')
    header + self.padded_content
  end

  # Guessing the type of an AVP and displaying it sensibly is complex,
  # so this is a complex method (but one that has a unity of purpose,
  # so can't easily be broken down). Disable several Rubocop
  # complexity metrics to reflect this.

  # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity
  # rubocop:disable Metrics/MethodLength, Metrics/PerceivedComplexity

  # Returns a string representation of this AVP. Makes a best-effort
  # attempt to guess the type of the content (even for unknown AVPs)
  # and display it sensibly.
  #
  # @example
  #   avp.to_s => "AVP 267, mandatory: true, content as int32: 1"
  def to_s
    has_all_ascii_values =
      @content.bytes.reject { |c| (32 < c && c < 126) }.empty?

    could_be_32bit_num = (@content.length == 4)
    could_be_64bit_num = (@content.length == 8)

    could_be_ip = ((@content.length == 6 && @content[0..1] == "\x00\x01") ||
                   (@content.length == 18 && @content[0..1] == "\x00\x02"))

    maybe_grouped = !(has_all_ascii_values ||
                      could_be_64bit_num   ||
                      could_be_32bit_num   ||
                      could_be_ip)

    s = to_s_first_line
    s += ", content as string: #{@content}" if has_all_ascii_values
    s += ", content as int32: #{uint32}" if could_be_32bit_num
    s += ", content as int64: #{uint64}" if could_be_64bit_num
    s += ", content as ip: #{ip_address}" if could_be_ip
    s += ", grouped AVP, #{grouped_value.collect(&:to_s)}" if maybe_grouped

    s
  end
  # rubocop:enable Metrics/AbcSize, Metrics/CyclomaticComplexity
  # rubocop:enable Metrics/MethodLength, Metrics/PerceivedComplexity

  # @!attribute [r] vendor_specific? 
  #   @return [true, false] Whether this AVP is mandatory (i.e. its M flag is set)
  def vendor_specific?
    false
  end

  # @!group Data getters/setters for different AVP types
  
  # Returns this AVP's byte data, interpreted as a {http://tools.ietf.org/html/rfc6733#section-4.4 Grouped AVP}.
  #
  # @return [Array<AVP>] The contained AVPs.
  def grouped_value
    AVPParser::parse_avps_int(@content)
  end

  # Sets this AVP's byte data to a {http://tools.ietf.org/html/rfc6733#section-4.4 Grouped AVP}.
  #
  # @param [Array<AVP>] avps The AVPs that should be contained within
  #   this AVP.
  # @return [void]
  def grouped_value=(avps)
    new_content = ''
    avps.each { |a| new_content += a.to_wire }
    @content = new_content
  end

  # For a grouped AVP, returns the first AVP with this name it
  # contains.
  #
  # @param [String] name The AVP name
  # @return [AVP] if this AVP is found inside the Grouped AVP
  # @return [nil] if this AVP is not found inside the Grouped AVP
  def inner_avp(name)
    avps = inner_avps(name)

    if avps.empty?
      nil
    else
      avps[0]
    end
  end

  # For a grouped AVP, returns all AVPs it contains with this name.
  #
  # @param [String] name The AVP name
  # @return [Array<AVP>]
  def inner_avps(name)
    code, _type, _vendor = AVPNames.get(name)

    self.grouped_value.select { |a| a.code == code}
  end

  # Even though it is just "the raw bytes in the content",
  # octet_string is only one way of interpreting the AVP content and
  # shouldn't be treated differently to the others, so disable the
  # TrivialAccessors warning.

  # rubocop:disable Style/TrivialAccessors

  # Returns this AVP's byte data, interpreted as an OctetString.
  #
  # @return [String] The contained OctetString.
  def octet_string
    @content
  end

  # Sets this AVP's byte data to an OctetString.
  #
  # @param [String] value The octets to use as the value.
  # @return [void]
  def octet_string=(value)
    @content = value
  end

  # rubocop:enable Style/TrivialAccessors

  # Returns this AVP's byte data, interpreted as an Integer32.
  #
  # @return [Fixnum] The contained Integer32.
  def int32
    @content.unpack('l>')[0]
  end

  # Sets this AVP's byte data to an Integer32.
  #
  # @param [Fixnum] value
  # @return [void]
  def int32=(value)
    @content = [value].pack('l>')
  end

  # Returns this AVP's byte data, interpreted as an Integer64.
  #
  # @return [Fixnum] The contained Integer64.
  def int64
    @content.unpack('q>')[0]
  end

  # Sets this AVP's byte data to an Integer64.
  #
  # @param [Fixnum] value
  # @return [void]
  def int64=(value)
    @content = [value].pack('q>')
  end

  # Returns this AVP's byte data, interpreted as an Unsigned32.
  #
  # @return [Fixnum] The contained Unsigned32.
  def uint32
    @content.unpack('N')[0]
  end

  # Sets this AVP's byte data to an Unsigned32.
  #
  # @param [Fixnum] value
  # @return [void]
  def uint32=(value)
    @content = [value].pack('N')
  end

  # Returns this AVP's byte data, interpreted as an Unsigned64.
  #
  # @return [Fixnum] The contained Unsigned64.
  def uint64
    @content.unpack('Q>')[0]
  end

  # Sets this AVP's byte data to an Unsigned64.
  #
  # @param [Fixnum] value
  # @return [void]
  def uint64=(value)
    @content = [value].pack('Q>')
  end

  # Returns this AVP's byte data, interpreted as a Float32.
  #
  # @return [Float] The contained Float32.
  def float32
    @content.unpack('g')[0]
  end

  # Sets this AVP's byte data to a Float32.
  #
  # @param [Float] value
  # @return [void]
  def float32=(value)
    @content = [value].pack('g')
  end

  # Returns this AVP's byte data, interpreted as a Float64.
  #
  # @return [Float] The contained Float64.
  def float64
    @content.unpack('G')[0]
  end

  # Sets this AVP's byte data to a Float64.
  #
  # @param [Float] value
  # @return [void]
  def float64=(value)
    @content = [value].pack('G')
  end

  # Returns this AVP's byte data, interpreted as an {http://tools.ietf.org/html/rfc6733#section-4.3.1 Address}.
  #
  # @return [IPAddr] The contained {http://tools.ietf.org/html/rfc6733#section-4.3.1 Address}.
  def ip_address
    IPAddr.new_ntoh(@content[2..-1])
  end

  # Sets this AVP's byte data to an Address.
  #
  # @param [IPAddr] value
  # @return [void]
  def ip_address=(value)
    bytes = if value.ipv4?
              [1].pack('n')
            else
              [2].pack('n')
            end

    bytes += value.hton
    @content = bytes
  end

  # @!endgroup
  
  private
  
  def self.set_content(avp, type, val)
    case type
    when GROUPED
      avp.grouped_value = val
    when U32
      avp.uint32 = val
    when OCTETSTRING
      avp.octet_string = val
    when IPADDR
      avp.ip_address = val
    end
  end

  def to_s_first_line
    "AVP #{@code}, mandatory: #{@mandatory}"
  end

  protected
  def padded_content
    wire_content = @content
    while ((wire_content.length % 4) != 0)
      wire_content += "\x00"
    end
    wire_content
  end 
end

- (true, false) mandatory (readonly)

Returns Whether this AVP is mandatory (i.e. its M flag is set)

Returns:

  • (true, false)

    Whether this AVP is mandatory (i.e. its M flag is set)



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
# File 'lib/diameter/avp.rb', line 82

class AVP
  include AVPType
  attr_reader :code, :mandatory

  include AVPParser

  def initialize(code, options = {})
    @code = code
    @content = options[:content] || ''
    @mandatory = options[:mandatory]
    @mandatory = true if @mandatory.nil?
  end

  # Creates an AVP by name, and assigns it a value.
  #
  # @param name The name of the AVP, e.g. "Origin-Host"
  # @param val The value of the AVP. Must be of the type defined for
  #   that AVP - e.g. a Fixnum for an AVP defined as Unsigned32, a
  #   String for an AVP defined as OctetString, or an IPAddr for an AVP
  #   defined as IPAddress.
  # @return [AVP] The AVP that was created.
  def self.create(name, val, options={})
    code, type, vendor = AVPNames.get(name)
    avp = if (vendor != 0)
            VendorSpecificAVP.new(code, vendor, options)
          else
            AVP.new(code, options)
          end

    set_content(avp, type, val)

    avp
  end

  # Returns this AVP encoded properly as bytes in network byte order,
  # suitable for sending over a TCP or SCTP connection. See
  # {http://tools.ietf.org/html/rfc6733#section-4.1} for the
  # format.
  #
  # @return [String] The bytes representing this AVP
  def to_wire
    length_8, length_16 = UInt24.to_u8_and_u16(@content.length + 8)
    avp_flags = @mandatory ? '01000000' : '00000000'
    header = [@code, avp_flags, length_8, length_16].pack('NB8Cn')
    header + self.padded_content
  end

  # Guessing the type of an AVP and displaying it sensibly is complex,
  # so this is a complex method (but one that has a unity of purpose,
  # so can't easily be broken down). Disable several Rubocop
  # complexity metrics to reflect this.

  # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity
  # rubocop:disable Metrics/MethodLength, Metrics/PerceivedComplexity

  # Returns a string representation of this AVP. Makes a best-effort
  # attempt to guess the type of the content (even for unknown AVPs)
  # and display it sensibly.
  #
  # @example
  #   avp.to_s => "AVP 267, mandatory: true, content as int32: 1"
  def to_s
    has_all_ascii_values =
      @content.bytes.reject { |c| (32 < c && c < 126) }.empty?

    could_be_32bit_num = (@content.length == 4)
    could_be_64bit_num = (@content.length == 8)

    could_be_ip = ((@content.length == 6 && @content[0..1] == "\x00\x01") ||
                   (@content.length == 18 && @content[0..1] == "\x00\x02"))

    maybe_grouped = !(has_all_ascii_values ||
                      could_be_64bit_num   ||
                      could_be_32bit_num   ||
                      could_be_ip)

    s = to_s_first_line
    s += ", content as string: #{@content}" if has_all_ascii_values
    s += ", content as int32: #{uint32}" if could_be_32bit_num
    s += ", content as int64: #{uint64}" if could_be_64bit_num
    s += ", content as ip: #{ip_address}" if could_be_ip
    s += ", grouped AVP, #{grouped_value.collect(&:to_s)}" if maybe_grouped

    s
  end
  # rubocop:enable Metrics/AbcSize, Metrics/CyclomaticComplexity
  # rubocop:enable Metrics/MethodLength, Metrics/PerceivedComplexity

  # @!attribute [r] vendor_specific? 
  #   @return [true, false] Whether this AVP is mandatory (i.e. its M flag is set)
  def vendor_specific?
    false
  end

  # @!group Data getters/setters for different AVP types
  
  # Returns this AVP's byte data, interpreted as a {http://tools.ietf.org/html/rfc6733#section-4.4 Grouped AVP}.
  #
  # @return [Array<AVP>] The contained AVPs.
  def grouped_value
    AVPParser::parse_avps_int(@content)
  end

  # Sets this AVP's byte data to a {http://tools.ietf.org/html/rfc6733#section-4.4 Grouped AVP}.
  #
  # @param [Array<AVP>] avps The AVPs that should be contained within
  #   this AVP.
  # @return [void]
  def grouped_value=(avps)
    new_content = ''
    avps.each { |a| new_content += a.to_wire }
    @content = new_content
  end

  # For a grouped AVP, returns the first AVP with this name it
  # contains.
  #
  # @param [String] name The AVP name
  # @return [AVP] if this AVP is found inside the Grouped AVP
  # @return [nil] if this AVP is not found inside the Grouped AVP
  def inner_avp(name)
    avps = inner_avps(name)

    if avps.empty?
      nil
    else
      avps[0]
    end
  end

  # For a grouped AVP, returns all AVPs it contains with this name.
  #
  # @param [String] name The AVP name
  # @return [Array<AVP>]
  def inner_avps(name)
    code, _type, _vendor = AVPNames.get(name)

    self.grouped_value.select { |a| a.code == code}
  end

  # Even though it is just "the raw bytes in the content",
  # octet_string is only one way of interpreting the AVP content and
  # shouldn't be treated differently to the others, so disable the
  # TrivialAccessors warning.

  # rubocop:disable Style/TrivialAccessors

  # Returns this AVP's byte data, interpreted as an OctetString.
  #
  # @return [String] The contained OctetString.
  def octet_string
    @content
  end

  # Sets this AVP's byte data to an OctetString.
  #
  # @param [String] value The octets to use as the value.
  # @return [void]
  def octet_string=(value)
    @content = value
  end

  # rubocop:enable Style/TrivialAccessors

  # Returns this AVP's byte data, interpreted as an Integer32.
  #
  # @return [Fixnum] The contained Integer32.
  def int32
    @content.unpack('l>')[0]
  end

  # Sets this AVP's byte data to an Integer32.
  #
  # @param [Fixnum] value
  # @return [void]
  def int32=(value)
    @content = [value].pack('l>')
  end

  # Returns this AVP's byte data, interpreted as an Integer64.
  #
  # @return [Fixnum] The contained Integer64.
  def int64
    @content.unpack('q>')[0]
  end

  # Sets this AVP's byte data to an Integer64.
  #
  # @param [Fixnum] value
  # @return [void]
  def int64=(value)
    @content = [value].pack('q>')
  end

  # Returns this AVP's byte data, interpreted as an Unsigned32.
  #
  # @return [Fixnum] The contained Unsigned32.
  def uint32
    @content.unpack('N')[0]
  end

  # Sets this AVP's byte data to an Unsigned32.
  #
  # @param [Fixnum] value
  # @return [void]
  def uint32=(value)
    @content = [value].pack('N')
  end

  # Returns this AVP's byte data, interpreted as an Unsigned64.
  #
  # @return [Fixnum] The contained Unsigned64.
  def uint64
    @content.unpack('Q>')[0]
  end

  # Sets this AVP's byte data to an Unsigned64.
  #
  # @param [Fixnum] value
  # @return [void]
  def uint64=(value)
    @content = [value].pack('Q>')
  end

  # Returns this AVP's byte data, interpreted as a Float32.
  #
  # @return [Float] The contained Float32.
  def float32
    @content.unpack('g')[0]
  end

  # Sets this AVP's byte data to a Float32.
  #
  # @param [Float] value
  # @return [void]
  def float32=(value)
    @content = [value].pack('g')
  end

  # Returns this AVP's byte data, interpreted as a Float64.
  #
  # @return [Float] The contained Float64.
  def float64
    @content.unpack('G')[0]
  end

  # Sets this AVP's byte data to a Float64.
  #
  # @param [Float] value
  # @return [void]
  def float64=(value)
    @content = [value].pack('G')
  end

  # Returns this AVP's byte data, interpreted as an {http://tools.ietf.org/html/rfc6733#section-4.3.1 Address}.
  #
  # @return [IPAddr] The contained {http://tools.ietf.org/html/rfc6733#section-4.3.1 Address}.
  def ip_address
    IPAddr.new_ntoh(@content[2..-1])
  end

  # Sets this AVP's byte data to an Address.
  #
  # @param [IPAddr] value
  # @return [void]
  def ip_address=(value)
    bytes = if value.ipv4?
              [1].pack('n')
            else
              [2].pack('n')
            end

    bytes += value.hton
    @content = bytes
  end

  # @!endgroup
  
  private
  
  def self.set_content(avp, type, val)
    case type
    when GROUPED
      avp.grouped_value = val
    when U32
      avp.uint32 = val
    when OCTETSTRING
      avp.octet_string = val
    when IPADDR
      avp.ip_address = val
    end
  end

  def to_s_first_line
    "AVP #{@code}, mandatory: #{@mandatory}"
  end

  protected
  def padded_content
    wire_content = @content
    while ((wire_content.length % 4) != 0)
      wire_content += "\x00"
    end
    wire_content
  end 
end

- (Boolean) vendor_specific? (readonly)

Returns:

  • (Boolean)


172
173
174
# File 'lib/diameter/avp.rb', line 172

def vendor_specific?
  false
end

Class Method Details

+ (AVP) create(name, val, options = {})

Creates an AVP by name, and assigns it a value.

Parameters:

  • name

    The name of the AVP, e.g. “Origin-Host”

  • val

    The value of the AVP. Must be of the type defined for that AVP - e.g. a Fixnum for an AVP defined as Unsigned32, a String for an AVP defined as OctetString, or an IPAddr for an AVP defined as IPAddress.

Returns:

  • (AVP)

    The AVP that was created.



103
104
105
106
107
108
109
110
111
112
113
114
# File 'lib/diameter/avp.rb', line 103

def self.create(name, val, options={})
  code, type, vendor = AVPNames.get(name)
  avp = if (vendor != 0)
          VendorSpecificAVP.new(code, vendor, options)
        else
          AVP.new(code, options)
        end

  set_content(avp, type, val)

  avp
end

Instance Method Details

- (Float) float32

Returns this AVP's byte data, interpreted as a Float32.

Returns:

  • (Float)

    The contained Float32.



309
310
311
# File 'lib/diameter/avp.rb', line 309

def float32
  @content.unpack('g')[0]
end

- (void) float32=(value)

This method returns an undefined value.

Sets this AVP's byte data to a Float32.

Parameters:

  • value (Float)


317
318
319
# File 'lib/diameter/avp.rb', line 317

def float32=(value)
  @content = [value].pack('g')
end

- (Float) float64

Returns this AVP's byte data, interpreted as a Float64.

Returns:

  • (Float)

    The contained Float64.



324
325
326
# File 'lib/diameter/avp.rb', line 324

def float64
  @content.unpack('G')[0]
end

- (void) float64=(value)

This method returns an undefined value.

Sets this AVP's byte data to a Float64.

Parameters:

  • value (Float)


332
333
334
# File 'lib/diameter/avp.rb', line 332

def float64=(value)
  @content = [value].pack('G')
end

- (Array<AVP>) grouped_value

Returns this AVP's byte data, interpreted as a Grouped AVP.

Returns:

  • (Array<AVP>)

    The contained AVPs.



181
182
183
# File 'lib/diameter/avp.rb', line 181

def grouped_value
  AVPParser::parse_avps_int(@content)
end

- (void) grouped_value=(avps)

This method returns an undefined value.

Sets this AVP's byte data to a Grouped AVP.

Parameters:

  • avps (Array<AVP>)

    The AVPs that should be contained within this AVP.



190
191
192
193
194
# File 'lib/diameter/avp.rb', line 190

def grouped_value=(avps)
  new_content = ''
  avps.each { |a| new_content += a.to_wire }
  @content = new_content
end

- (AVP?) inner_avp(name)

For a grouped AVP, returns the first AVP with this name it contains.

Parameters:

  • name (String)

    The AVP name

Returns:

  • (AVP)

    if this AVP is found inside the Grouped AVP

  • (nil)

    if this AVP is not found inside the Grouped AVP



202
203
204
205
206
207
208
209
210
# File 'lib/diameter/avp.rb', line 202

def inner_avp(name)
  avps = inner_avps(name)

  if avps.empty?
    nil
  else
    avps[0]
  end
end

- (Array<AVP>) inner_avps(name)

For a grouped AVP, returns all AVPs it contains with this name.

Parameters:

  • name (String)

    The AVP name

Returns:



216
217
218
219
220
# File 'lib/diameter/avp.rb', line 216

def inner_avps(name)
  code, _type, _vendor = AVPNames.get(name)

  self.grouped_value.select { |a| a.code == code}
end

- (Fixnum) int32

Returns this AVP's byte data, interpreted as an Integer32.

Returns:

  • (Fixnum)

    The contained Integer32.



249
250
251
# File 'lib/diameter/avp.rb', line 249

def int32
  @content.unpack('l>')[0]
end

- (void) int32=(value)

This method returns an undefined value.

Sets this AVP's byte data to an Integer32.

Parameters:

  • value (Fixnum)


257
258
259
# File 'lib/diameter/avp.rb', line 257

def int32=(value)
  @content = [value].pack('l>')
end

- (Fixnum) int64

Returns this AVP's byte data, interpreted as an Integer64.

Returns:

  • (Fixnum)

    The contained Integer64.



264
265
266
# File 'lib/diameter/avp.rb', line 264

def int64
  @content.unpack('q>')[0]
end

- (void) int64=(value)

This method returns an undefined value.

Sets this AVP's byte data to an Integer64.

Parameters:

  • value (Fixnum)


272
273
274
# File 'lib/diameter/avp.rb', line 272

def int64=(value)
  @content = [value].pack('q>')
end

- (IPAddr) ip_address

Returns this AVP's byte data, interpreted as an Address.

Returns:

  • (IPAddr)

    The contained Address.



339
340
341
# File 'lib/diameter/avp.rb', line 339

def ip_address
  IPAddr.new_ntoh(@content[2..-1])
end

- (void) ip_address=(value)

This method returns an undefined value.

Sets this AVP's byte data to an Address.

Parameters:

  • value (IPAddr)


347
348
349
350
351
352
353
354
355
356
# File 'lib/diameter/avp.rb', line 347

def ip_address=(value)
  bytes = if value.ipv4?
            [1].pack('n')
          else
            [2].pack('n')
          end

  bytes += value.hton
  @content = bytes
end

- (String) octet_string

Returns this AVP's byte data, interpreted as an OctetString.

Returns:

  • (String)

    The contained OctetString.



232
233
234
# File 'lib/diameter/avp.rb', line 232

def octet_string
  @content
end

- (void) octet_string=(value)

This method returns an undefined value.

Sets this AVP's byte data to an OctetString.

Parameters:

  • value (String)

    The octets to use as the value.



240
241
242
# File 'lib/diameter/avp.rb', line 240

def octet_string=(value)
  @content = value
end

- (Object) to_s

Returns a string representation of this AVP. Makes a best-effort attempt to guess the type of the content (even for unknown AVPs) and display it sensibly.

Examples:

avp.to_s => "AVP 267, mandatory: true, content as int32: 1"


143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
# File 'lib/diameter/avp.rb', line 143

def to_s
  has_all_ascii_values =
    @content.bytes.reject { |c| (32 < c && c < 126) }.empty?

  could_be_32bit_num = (@content.length == 4)
  could_be_64bit_num = (@content.length == 8)

  could_be_ip = ((@content.length == 6 && @content[0..1] == "\x00\x01") ||
                 (@content.length == 18 && @content[0..1] == "\x00\x02"))

  maybe_grouped = !(has_all_ascii_values ||
                    could_be_64bit_num   ||
                    could_be_32bit_num   ||
                    could_be_ip)

  s = to_s_first_line
  s += ", content as string: #{@content}" if has_all_ascii_values
  s += ", content as int32: #{uint32}" if could_be_32bit_num
  s += ", content as int64: #{uint64}" if could_be_64bit_num
  s += ", content as ip: #{ip_address}" if could_be_ip
  s += ", grouped AVP, #{grouped_value.collect(&:to_s)}" if maybe_grouped

  s
end

- (String) to_wire

Returns this AVP encoded properly as bytes in network byte order, suitable for sending over a TCP or SCTP connection. See http://tools.ietf.org/html/rfc6733#section-4.1 for the format.

Returns:

  • (String)

    The bytes representing this AVP



122
123
124
125
126
127
# File 'lib/diameter/avp.rb', line 122

def to_wire
  length_8, length_16 = UInt24.to_u8_and_u16(@content.length + 8)
  avp_flags = @mandatory ? '01000000' : '00000000'
  header = [@code, avp_flags, length_8, length_16].pack('NB8Cn')
  header + self.padded_content
end

- (Fixnum) uint32

Returns this AVP's byte data, interpreted as an Unsigned32.

Returns:

  • (Fixnum)

    The contained Unsigned32.



279
280
281
# File 'lib/diameter/avp.rb', line 279

def uint32
  @content.unpack('N')[0]
end

- (void) uint32=(value)

This method returns an undefined value.

Sets this AVP's byte data to an Unsigned32.

Parameters:

  • value (Fixnum)


287
288
289
# File 'lib/diameter/avp.rb', line 287

def uint32=(value)
  @content = [value].pack('N')
end

- (Fixnum) uint64

Returns this AVP's byte data, interpreted as an Unsigned64.

Returns:

  • (Fixnum)

    The contained Unsigned64.



294
295
296
# File 'lib/diameter/avp.rb', line 294

def uint64
  @content.unpack('Q>')[0]
end

- (void) uint64=(value)

This method returns an undefined value.

Sets this AVP's byte data to an Unsigned64.

Parameters:

  • value (Fixnum)


302
303
304
# File 'lib/diameter/avp.rb', line 302

def uint64=(value)
  @content = [value].pack('Q>')
end