diff options
Diffstat (limited to 'lib/diameter/doc/src')
| -rw-r--r-- | lib/diameter/doc/src/diameter_dict.xml | 147 |
1 files changed, 90 insertions, 57 deletions
diff --git a/lib/diameter/doc/src/diameter_dict.xml b/lib/diameter/doc/src/diameter_dict.xml index 01616f519d..cc638dbc18 100644 --- a/lib/diameter/doc/src/diameter_dict.xml +++ b/lib/diameter/doc/src/diameter_dict.xml @@ -36,7 +36,7 @@ under the License. <!-- ===================================================================== --> <file>diameter_dict</file> -<filesummary>Dictionary inteface of the diameter application.</filesummary> +<filesummary>Dictionary interface of the diameter application.</filesummary> <description> <p> @@ -74,7 +74,7 @@ corresponding to applications defined in section 2.4 of RFC 3588: application with application identifier 0, <c>diameter_gen_accounting</c> for the Diameter Base Accounting application with application identifier 3 and -<c>diameter_gen_relay</c>the Relay application with application +<c>diameter_gen_relay</c> the Relay application with application identifier 0xFFFFFFFF. The Common Message and Relay applications are the only applications that diameter itself has any specific knowledge of. @@ -94,18 +94,16 @@ defined.</p> <p> A dictionary file consists of distinct sections. -Each section starts with a line consisting of a tag -followed by zero or more arguments. -Each section ends at the the start of the next section or end of file. +Each section starts with a tag followed by zero or more arguments +and ends at the the start of the next section or end of file. Tags consist of an ampersand character followed by a keyword and are separated from their arguments by whitespace. -Whitespace within a section separates individual tokens but its -quantity is insignificant.</p> +Whitespace separates individual tokens but is otherwise insignificant.</p> <p> The tags, their arguments and the contents of each corresponding section are as follows. -Each section can occur at most once unless otherwise specified. +Each section can occur multiple times unless otherwise specified. The order in which sections are specified is unimportant.</p> <taglist> @@ -115,7 +113,8 @@ The order in which sections are specified is unimportant.</p> <p> Defines the integer Number as the Diameter Application Id of the application in question. -Required if the dictionary defines <c>@messages</c>. +Can occur at most once and is required if the dictionary defines +<c>@messages</c>. The section has empty content.</p> <p> @@ -136,16 +135,13 @@ Example:</p> <item> <p> Defines the name of the generated dictionary module. -The section has empty content. -Mod must match the regular expression '^[a-zA-Z0-9][-_a-zA-Z0-9]*$'; -that is, contains only alphanumerics, hyphens and underscores begin with an -alphanumeric.</p> +Can occur at most once and defaults to the name of the dictionary file +minus any extension if unspecified. +The section has empty content.</p> <p> -A name is optional and defaults to the name of the dictionary file -minus any extension. -Note that a generated module must have a unique name an not colide -with another module in the system.</p> +Note that a dictionary module should have a unique name so as not collide +with existing modules in the system.</p> <p> Example:</p> @@ -159,22 +155,22 @@ Example:</p> <tag><c>@prefix Name</c></tag> <item> <p> -Defines Name as the prefix to be added to record and constant names in -the generated dictionary module and hrl. -The section has empty content. -Name must be of the same form as a @name.</p> +Defines Name as the prefix to be added to record and constant names +(followed by a <c>'_'</c> character) in the generated dictionary +module and hrl. +Can occur at most once. +The section has empty content.</p> <p> -A prefix is optional but can -be used to disambiguate record and constant names -resulting from similarly named messages and AVPs in different -Diameter applications.</p> +A prefix is optional but can be be used to disambiguate between record +and constant names resulting from similarly named messages and AVPs in +different Diameter applications.</p> <p> Example:</p> <code> -@prefix etsi_e2_ +@prefix etsi_e2 </code> </item> @@ -182,10 +178,12 @@ Example:</p> <tag><c>@vendor Number Name</c></tag> <item> <p> -Defines the integer Number as the the default Vendor-ID of AVPs for +Defines the integer Number as the the default Vendor-Id of AVPs for which the V flag is set. Name documents the owner of the application but is otherwise unused. +Can occur at most once and is required if an AVP sets the V flag and +is not otherwise assigned a Vendor-Id. The section has empty content.</p> <p> @@ -200,10 +198,9 @@ Example:</p> <tag><c>@avp_vendor_id Number</c></tag> <item> <p> -Defines the integer Number as the Vendor-ID of the AVPs listed in the +Defines the integer Number as the Vendor-Id of the AVPs listed in the section content, overriding the <c>@vendor</c> default. -The section content consists of AVP names. -Can occur zero or more times (with different values of Number).</p> +The section content consists of AVP names.</p> <p> Example:</p> @@ -221,13 +218,27 @@ Region-Set <tag><c>@inherits Mod</c></tag> <item> <p> -Defines the name of a generated dictionary module containing AVP -definitions referenced by the dictionary but not defined by it. -The section content is empty.</p> +Defines the name of a dictionary module containing AVP +definitions that should be imported into the current dictionary. +The section content consists of the names of those AVPs whose +definitions should be imported from the dictionary, an empty list +causing all to be imported. +Any listed AVPs must not be defined in the current dictionary and +it is an error to inherit the same AVP from more than one +dictionary.</p> + +<p> +Note that an inherited AVP that sets the V flag takes its Vendor-Id +from either <c>@avp_vendor_id</c> in the inheriting dictionary or +<c>@vendor</c> in the inherited dictionary. +In particular, <c>@avp_vendor_id</c> in the inherited dictionary is +ignored. +Inheriting from a dictionary that specifies the required <c>@vendor</c> +is equivalent to using <c>@avp_vendor_id</c> with a copy of the +dictionary's definitions but the former makes for easier reuse.</p> <p> -Can occur 0 or more times (with different values of Mod) but all -dictionaries should typically inherit RFC3588 AVPs from +All dictionaries should typically inherit RFC3588 AVPs from <c>diameter_gen_base_rfc3588</c>.</p> <p> @@ -248,13 +259,11 @@ The section consists of definitions of the form</p> <p><c>Name Code Type Flags</c></p> <p> -where Code is the integer AVP code, Flags is a string of V, -M and P characters indicating the flags to be -set on an outgoing AVP or a single - (minus) character if none are to -be set. -Type identifies either an AVP Data Format as defined in <seealso -marker="#DATA_TYPES">DATA TYPES</seealso> below or a -type as defined by a <c>@custom_types</c> section.</p> +where Code is the integer AVP code, Type identifies an AVP Data Format +as defined in <seealso marker="#DATA_TYPES">DATA TYPES</seealso> below, +and Flags is a string of V, M and P characters indicating the flags to be +set on an outgoing AVP or a single <c>'-'</c> (minus) character if +none are to be set.</p> <p> Example:</p> @@ -262,8 +271,8 @@ Example:</p> <code> @avp_types -Location-Information 350 Grouped VM -Requested-Information 353 Enumerated V +Location-Information 350 Grouped MV +Requested-Information 353 Enumerated V </code> <p> @@ -276,21 +285,36 @@ to 0 as mandated by the current draft standard.</p> <tag><c>@custom_types Mod</c></tag> <item> <p> -Defines AVPs for which module Mod provides encode/decode. +Specifies AVPs for which module Mod provides encode/decode functions. The section contents consists of AVP names. -For each AVP Name in the content, <c>Mod:Name(encode|decode, Type, Data)</c> -is expected to provide encode/decode for values of the AVP, where Type -is the type of the AVP as declared in the <c>@avp_types</c> section -of the dictionary and Data is the value to encoded/decoded.</p> +For each such name, <c>Mod:Name(encode|decode, Type, Data)</c> is +expected to provide encode/decode for values of the AVP, where Name is +the name of the AVP, Type is it's type as declared in the +<c>@avp_types</c> section of the dictionary and Data is the value to +encode/decode.</p> + +<p> +Example:</p> + +<code> +@custom_types rfc4005_avps + +Framed-IP-Address +</code> +</item> +<tag><c>@codecs Mod</c></tag> +<item> <p> -Can occur 0 or more times (with different values of Mod).</p> +Like <c>@custom_types</c> but requires the specified module to export +<c>Mod:Type(encode|decode, Name, Data)</c> rather than +<c>Mod:Name(encode|decode, Type, Data)</c>.</p> <p> Example:</p> <code> -@custom_types rfc4005_avps +@codecs rfc4005_avps Framed-IP-Address </code> @@ -360,6 +384,10 @@ SIP-Deregistration-Reason ::= < AVP Header: 383 > [ SIP-Reason-Info ] * [ AVP ] </code> + +<p> +Specifying a Vendor-Id in the definition of a grouped AVP is +equivalent to specifying it with <c>@avp_vendor_id</c>.</p> </item> <tag><c>@enum Name</c></tag> @@ -371,11 +399,9 @@ Integer values can be prefixed with 0x to be interpreted as hexidecimal.</p> <p> -Can occur 0 or more times (with different values of Name). -The AVP in question can be defined in an inherited dictionary in order -to introduce additional values. -An AVP so extended must be referenced by in a <c>@messages</c> or -<c>@grouped</c> section.</p> +Note that the AVP in question can be defined in an inherited +dictionary in order to introduce additional values to an enumeration +otherwise defined in another dictionary.</p> <p> Example:</p> @@ -390,11 +416,18 @@ REMOVE_SIP_SERVER 3 </code> </item> +<tag><c>@end</c></tag> +<item> +<p> +Causes parsing of the dictionary to terminate: +any remaining content is ignored.</p> +</item> + </taglist> <p> Comments can be included in a dictionary file using semicolon: -text from a semicolon to end of line is ignored.</p> +characters from a semicolon to end of line are ignored.</p> <marker id="MESSAGE_RECORDS"/> </section> |