diff options
Diffstat (limited to 'lib/diameter/doc')
| -rw-r--r-- | lib/diameter/doc/src/diameter.xml | 224 | ||||
| -rw-r--r-- | lib/diameter/doc/src/diameter_app.xml | 9 | ||||
| -rw-r--r-- | lib/diameter/doc/src/diameter_codec.xml | 23 | ||||
| -rw-r--r-- | lib/diameter/doc/src/diameter_sctp.xml | 3 | ||||
| -rw-r--r-- | lib/diameter/doc/src/diameter_tcp.xml | 13 | ||||
| -rw-r--r-- | lib/diameter/doc/src/seealso.ent | 5 |
6 files changed, 188 insertions, 89 deletions
diff --git a/lib/diameter/doc/src/diameter.xml b/lib/diameter/doc/src/diameter.xml index 2cbe48ecce..0169afb619 100644 --- a/lib/diameter/doc/src/diameter.xml +++ b/lib/diameter/doc/src/diameter.xml @@ -397,10 +397,10 @@ from the peer offers it.</p> Note that each tuple communicates one or more AVP values. It is an error to specify duplicate tuples.</p> -<marker id="evaluable"/> +<marker id="eval"/> </item> -<tag><c>evaluable() = {M,F,A} | fun() | [evaluable() | A]</c></tag> +<tag><c>eval() = {M,F,A} | fun() | [eval() | A]</c></tag> <item> <p> An expression that can be evaluated as a function in the following @@ -418,7 +418,7 @@ eval(F) -> </pre> <p> -Applying an <c>&evaluable;</c> +Applying an <c>&eval;</c> <c>E</c> to an argument list <c>A</c> is meant in the sense of <c>eval([E|A])</c>.</p> @@ -484,11 +484,11 @@ Matches only those peers whose Origin-Realm has the specified value, or all peers if the atom <c>any</c>.</p> </item> -<tag><c>{eval, &evaluable;}</c></tag> +<tag><c>{eval, &eval;}</c></tag> <item> <p> Matches only those peers for which the specified -<c>&evaluable;</c> returns +<c>&eval;</c> returns <c>true</c> when applied to the connection's <c>diameter_caps</c> record. Any other return value or exception is equivalent to <c>false</c>.</p> @@ -650,7 +650,7 @@ Result = ResultCode | {capabilities_cb, CB, ResultCode|discard} Caps = #diameter_caps{} Pkt = #diameter_packet{} ResultCode = integer() -CB = &evaluable; +CB = &eval; </pre> <p> @@ -798,15 +798,31 @@ be matched by corresponding &capability; configuration, of </item> <tag> -<marker id="incoming_maxlen"/><c>{incoming_maxlen, 0..16777215}</c></tag> +<marker id="decode_format"/> +<c>{decode_format, record | list | map | none}</c></tag> <item> <p> -Bound on the expected size of incoming Diameter messages. -Messages larger than the specified number of bytes are discarded.</p> +The format of decoded messages and grouped AVPs in the <c>msg</c> field +of diameter_packet records and <c>value</c> field of diameter_avp +records respectively. +If <c>record</c> then a record whose definition is generated from the +dictionary file in question. +If <c>list</c> or <c>map</c> then a <c>[Name | Avps]</c> pair where +<c>Avps</c> is a list of AVP name/values pairs or a map keyed on +AVP names respectively. +If <c>none</c> then the atom-value message name, or <c>undefined</c> +for a Grouped AVP. +See also &codec_message;.</p> <p> -Defaults to <c>16777215</c>, the maximum value of the 24-bit Message -Length field in a Diameter Header.</p> +Defaults to <c>record</c>.</p> + +<note> +<p> +AVPs are decoded into a list of diameter_avp records in <c>avps</c> +field of diameter_packet records independently of +<c>decode_format</c>.</p> +</note> </item> @@ -814,7 +830,7 @@ Length field in a Diameter Header.</p> | node | nodes | [node()] - | evaluable()}</c></tag> + | eval()}</c></tag> <item> <p> The degree to which the service allows multiple transport @@ -825,7 +841,7 @@ at capabilities exchange.</p> If <c>[node()]</c> then a connection is rejected if another already exists on any of the specified nodes. Types <c>false</c>, <c>node</c>, <c>nodes</c> and -&evaluable; are equivalent to +&eval; are equivalent to <c>[]</c>, <c>[node()]</c>, <c>[node()|nodes()]</c> and the evaluated value respectively, evaluation of each expression taking place whenever a new connection is to be established. @@ -840,7 +856,7 @@ by their own peer and watchdog state machines.</p> Defaults to <c>nodes</c>.</p> </item> -<tag><c>{sequence, {H,N} | &evaluable;}</c></tag> +<tag><c>{sequence, {H,N} | &eval;}</c></tag> <item> <p> A constant value <c>H</c> for the topmost <c>32-N</c> bits of @@ -875,7 +891,7 @@ outgoing requests.</p> </warning> </item> -<tag><c>{share_peers, boolean() | [node()] | evaluable()}</c></tag> +<tag><c>{share_peers, boolean() | [node()] | eval()}</c></tag> <item> <p> Nodes to which peer connections established on the local @@ -888,7 +904,7 @@ configured to use them: see <c>use_shared_peers</c> below.</p> If <c>false</c> then peers are not shared. If <c>[node()]</c> then peers are shared with the specified list of nodes. -If <c>evaluable()</c> then peers are shared with the nodes returned +If <c>eval()</c> then peers are shared with the nodes returned by the specified function, evaluated whenever a peer connection becomes available or a remote service requests information about local connections. @@ -914,59 +930,36 @@ of a single Diameter node across multiple Erlang nodes.</p> </note> </item> -<tag><c>{spawn_opt, [term()]}</c></tag> -<item> -<p> -Options list passed to &spawn_opt; when spawning a process for an -incoming Diameter request, unless the transport in question -specifies another value. -Options <c>monitor</c> and <c>link</c> are ignored.</p> - -<p> -Defaults to the empty list.</p> -</item> - <tag> -<marker id="strict_mbit"/><c>{strict_mbit, boolean()}</c></tag> +<marker id="strict_arities"/><c>{strict_arities, boolean() + | encode + | decode}</c></tag> <item> <p> -Whether or not to regard an AVP setting the M-bit as erroneous when -the command grammar in question does not explicitly allow the AVP. -If <c>true</c> then such AVPs are regarded as 5001 errors, -DIAMETER_AVP_UNSUPPORTED. -If <c>false</c> then the M-bit is ignored and policing -it becomes the receiver's responsibility.</p> +Whether or not to require that the number of AVPs in a message or +grouped AVP agree with those specified in the dictionary in question +when passing messages to &man_app; callbacks. +If <c>true</c> then mismatches in an outgoing messages cause message +encoding to fail, while mismatches in an incoming message are reported +as 5005/5009 errors in the errors field of the diameter_packet record +passed to &app_handle_request; or &app_handle_answer; callbacks. +If <c>false</c> then neither error is enforced/detected. +If <c>encode</c> or <c>decode</c> then errors are only +enforced/detected on outgoing or incoming messages respectively.</p> <p> Defaults to <c>true</c>.</p> -<warning> -<p> -RFC 6733 is unclear about the semantics of the M-bit. -One the one hand, the CCF specification in section 3.2 documents AVP -in a command grammar as meaning <em>any</em> arbitrary AVP; on the -other hand, 1.3.4 states that AVPs setting the M-bit cannot be added -to an existing command: the modified command must instead be -placed in a new Diameter application.</p> -<p> -The reason for the latter is presumably interoperability: -allowing arbitrary AVPs setting the M-bit in a command makes its -interpretation implementation-dependent, since there's no -guarantee that all implementations will understand the same set of -arbitrary AVPs in the context of a given command. -However, interpreting <c>AVP</c> in a command grammar as any -AVP, regardless of M-bit, renders 1.3.4 meaningless, since the receiver -can simply ignore any AVP it thinks isn't relevant, regardless of the -sender's intent.</p> +<note> <p> -Beware of confusing mandatory in the sense of the M-bit with mandatory -in the sense of the command grammar. -The former is a semantic requirement: that the receiver understand the -semantics of the AVP in the context in question. -The latter is a syntactic requirement: whether or not the AVP must -occur in the message in question.</p> -</warning> - +Disabling arity checks affects the form of messages at encode/decode. +In particular, decoded AVPs are represented as lists of values, +regardless of the AVP's arity (ie. expected number in the message/AVP +grammar in question), and values are expected to be supplied as lists +at encode. +This differs from the historic decode behaviour of representing AVPs +of arity 1 as bare values, not wrapped in a list.</p> +</note> </item> <tag> @@ -993,7 +986,27 @@ The default value is for backwards compatibility.</p> </item> -<tag><c>{use_shared_peers, boolean() | [node()] | evaluable()}</c></tag> +<tag> +<marker id="traffic_counters"/><c>{traffic_counters, boolean()}</c></tag> +<item> +<p> +Whether or not to count application-specific messages; those for which +&man_app; callbacks take place. +If false then only messages handled by diameter itself are counted: +CER/CEA, DWR/DWA, DPR/DPA.</p> + +<p> +Defaults to <c>true</c>.</p> + +<note> +<p> +Disabling counters is a performance improvement, but means that the +omitted counters are not returned by &service_info;.</p> +</note> + +</item> + +<tag><c>{use_shared_peers, boolean() | [node()] | eval()}</c></tag> <item> <p> Nodes from which communicated peers are made available in @@ -1003,7 +1016,7 @@ the remote candidates list of &app_pick_peer; callbacks.</p> If <c>false</c> then remote peers are not used. If <c>[node()]</c> then only peers from the specified list of nodes are used. -If <c>evaluable()</c> then only peers returned by the specified +If <c>eval()</c> then only peers returned by the specified function are used, evaluated whenever a remote service communicates information about an available peer connection. The value <c>true</c> is equivalent to <c>fun &nodes;</c>. @@ -1028,6 +1041,15 @@ each node from which requests are sent.</p> </warning> </item> +<tag><c>&transport_opt;</c></tag> +<item> +<p> +Any transport option except <c>applications</c> or +<c>capabilities</c>. +Used as defaults for transport configuration, values passed to +&add_transport; overriding values configured on the service.</p> +</item> + </taglist> <marker id="transport_opt"/> @@ -1075,7 +1097,7 @@ TLS is desired over TCP as implemented by &man_tcp;.</p> </item> <tag> -<marker id="capabilities_cb"/><c>{capabilities_cb, &evaluable;}</c></tag> +<marker id="capabilities_cb"/><c>{capabilities_cb, &eval;}</c></tag> <item> <p> Callback invoked upon reception of CER/CEA during capabilities @@ -1169,7 +1191,7 @@ transport.</p> </item> <tag> -<marker id="disconnect_cb"/><c>{disconnect_cb, &evaluable;}</c></tag> +<marker id="disconnect_cb"/><c>{disconnect_cb, &eval;}</c></tag> <item> <p> Callback invoked prior to terminating the transport process of a @@ -1269,6 +1291,19 @@ Defaults to 5000.</p> </item> <tag> +<marker id="incoming_maxlen"/><c>{incoming_maxlen, 0..16777215}</c></tag> +<item> +<p> +Bound on the expected size of incoming Diameter messages. +Messages larger than the specified number of bytes are discarded.</p> + +<p> +Defaults to <c>16777215</c>, the maximum value of the 24-bit Message +Length field in a Diameter Header.</p> + +</item> + +<tag> <marker id="length_errors"/><c>{length_errors, exit|handle|discard}</c></tag> <item> <p> @@ -1326,7 +1361,64 @@ incoming Diameter request. Options <c>monitor</c> and <c>link</c> are ignored.</p> <p> -Defaults to the list configured on the service if not specified.</p> +Defaults to the empty list.</p> +</item> + +<tag> +<marker id="strict_capx"/><c>{strict_capx, boolean()]}</c></tag> +<item> +<p> +Whether or not to enforce the RFC 6733 requirement that any message +before capabilities exchange should close the peer connection. +If false then unexpected messages are discarded.</p> + +<p> +Defaults to true. +Changing this results in non-standard behaviour, but can be useful in +case peers are known to be behave badly.</p> +</item> + +<tag> +<marker id="strict_mbit"/><c>{strict_mbit, boolean()}</c></tag> +<item> +<p> +Whether or not to regard an AVP setting the M-bit as erroneous when +the command grammar in question does not explicitly allow the AVP. +If <c>true</c> then such AVPs are regarded as 5001 errors, +DIAMETER_AVP_UNSUPPORTED. +If <c>false</c> then the M-bit is ignored and policing +it becomes the receiver's responsibility.</p> + +<p> +Defaults to <c>true</c>.</p> + +<warning> +<p> +RFC 6733 is unclear about the semantics of the M-bit. +One the one hand, the CCF specification in section 3.2 documents AVP +in a command grammar as meaning <em>any</em> arbitrary AVP; on the +other hand, 1.3.4 states that AVPs setting the M-bit cannot be added +to an existing command: the modified command must instead be +placed in a new Diameter application.</p> +<p> +The reason for the latter is presumably interoperability: +allowing arbitrary AVPs setting the M-bit in a command makes its +interpretation implementation-dependent, since there's no +guarantee that all implementations will understand the same set of +arbitrary AVPs in the context of a given command. +However, interpreting <c>AVP</c> in a command grammar as any +AVP, regardless of M-bit, renders 1.3.4 meaningless, since the receiver +can simply ignore any AVP it thinks isn't relevant, regardless of the +sender's intent.</p> +<p> +Beware of confusing mandatory in the sense of the M-bit with mandatory +in the sense of the command grammar. +The former is a semantic requirement: that the receiver understand the +semantics of the AVP in the context in question. +The latter is a syntactic requirement: whether or not the AVP must +occur in the message in question.</p> +</warning> + </item> <tag> diff --git a/lib/diameter/doc/src/diameter_app.xml b/lib/diameter/doc/src/diameter_app.xml index dfcd00975b..aa334beb21 100644 --- a/lib/diameter/doc/src/diameter_app.xml +++ b/lib/diameter/doc/src/diameter_app.xml @@ -13,7 +13,8 @@ <header> <copyright> -<year>2011</year><year>2016</year> +<year>2011</year> +<year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -319,7 +320,7 @@ or &peer_down; callback.</p> <v>Action = Send | Discard | {eval_packet, Action, PostF}</v> <v>Send = {send, &packet; | &message;}</v> <v>Discard = {discard, Reason} | discard</v> -<v>PostF = &mod_evaluable;}</v> +<v>PostF = &mod_eval;}</v> </type> <desc> <p> @@ -371,7 +372,7 @@ discarded}</c>.</p> <v>Action = Send | Discard | {eval_packet, Action, PostF}</v> <v>Send = {send, &packet; | &message;}</v> <v>Discard = {discard, Reason} | discard</v> -<v>PostF = &mod_evaluable;}</v> +<v>PostF = &mod_eval;}</v> </type> <desc> <p> @@ -478,7 +479,7 @@ not selected.</p> | {answer_message, 3000..3999|5000..5999} | {protocol_error, 3000..3999}</v> <v>Opt = &mod_call_opt;</v> -<v>PostF = &mod_evaluable;</v> +<v>PostF = &mod_eval;</v> </type> <desc> <p> diff --git a/lib/diameter/doc/src/diameter_codec.xml b/lib/diameter/doc/src/diameter_codec.xml index 0117c1c88a..5124b49484 100644 --- a/lib/diameter/doc/src/diameter_codec.xml +++ b/lib/diameter/doc/src/diameter_codec.xml @@ -4,7 +4,10 @@ '<seealso marker="diameter_dict#MESSAGE_RECORDS">diameter_dict(4)</seealso>'> <!ENTITY types '<seealso marker="diameter_dict#DATA_TYPES">diameter_dict(4)</seealso>'> - <!ENTITY % also SYSTEM "seealso.ent" > + <!ENTITY decode_format + '<seealso marker="diameter#decode_format">decode format</seealso>'> + +<!ENTITY % also SYSTEM "seealso.ent" > <!ENTITY % here SYSTEM "seehere.ent" > %also; %here; @@ -145,7 +148,8 @@ question.</p> <p> The decoded value of an AVP. Will be <c>undefined</c> on decode if the data bytes could -not be decoded or the AVP is unknown. +not be decoded, the AVP is unknown, or if the &decode_format; is +<c>none</c>. The type of a decoded value is as document in &types;.</p> </item> @@ -230,7 +234,8 @@ header.</p> </item> <tag> -<marker id="message"/><c>message() = record() | list()</c></tag> +<marker id="message"/><c>message() = record() + | maybe_improper_list()</c></tag> <item> <p> The representation of a Diameter message as passed to @@ -240,7 +245,10 @@ a message as defined in a dictionary file is encoded as a record with one field for each component AVP. Equivalently, a message can also be encoded as a list whose head is the atom-valued message name (as specified in the relevant dictionary -file) and whose tail is a list of <c>{AvpName, AvpValue}</c> pairs.</p> +file) and whose tail is either a list of AVP name/values +pairs or a map with values keyed on AVP names. +The format at decode is determined by &mod_decode_format;. +Any of the formats is accepted at encode.</p> <p> Another list-valued representation allows a message to be specified @@ -283,15 +291,16 @@ value other than <c>undefined</c>.</p> <item> <p> The incoming/outgoing message. -For an incoming message, a record if the message can be -decoded in a non-relay application, <c>undefined</c> otherwise. +For an incoming message, a term corresponding to the configured +&decode_format; if the message can be decoded in a non-relay +application, <c>undefined</c> otherwise. For an outgoing message, setting a <c>[&header; | &avp;]</c> list is equivalent to setting the <c>header</c> and <c>avps</c> fields to the corresponding values.</p> <warning> <p> -A record-valued <c>msg</c> field does <em>not</em> imply an absence of +A value in the <c>msg</c> field does <em>not</em> imply an absence of decode errors. The <c>errors</c> field should also be examined.</p> </warning> diff --git a/lib/diameter/doc/src/diameter_sctp.xml b/lib/diameter/doc/src/diameter_sctp.xml index 9b6d629f79..c9b74a9ec5 100644 --- a/lib/diameter/doc/src/diameter_sctp.xml +++ b/lib/diameter/doc/src/diameter_sctp.xml @@ -16,7 +16,7 @@ <header> <copyright> <year>2011</year> -<year>2016</year> +<year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -116,7 +116,6 @@ and port respectively.</p> Multiple <c>ip</c> options can be specified for a multihomed peer. If none are specified then the values of <c>Host-IP-Address</c> in the <c>diameter_service</c> record are used. -(In particular, one of these must be specified.) Option <c>port</c> defaults to 3868 for a listening transport and 0 for a connecting transport.</p> diff --git a/lib/diameter/doc/src/diameter_tcp.xml b/lib/diameter/doc/src/diameter_tcp.xml index 6ca280c52b..1d65d14257 100644 --- a/lib/diameter/doc/src/diameter_tcp.xml +++ b/lib/diameter/doc/src/diameter_tcp.xml @@ -170,14 +170,11 @@ that will not be forthcoming, which will eventually cause the RFC 3539 watchdog to take down the connection.</p> <p> -If an <c>ip</c> option is not specified then the first element of a -non-empty <c>Host-IP-Address</c> list in <c>Svc</c> provides the local -IP address. -If neither is specified then the default address selected by &gen_tcp; -is used. -In all cases, the selected address is either returned from -&start; or passed in a <c>connected</c> message over the transport -interface.</p> +The first element of a non-empty <c>Host-IP-Address</c> list in +<c>Svc</c> provides the local IP address if an <c>ip</c> option is not +specified. +The local address is either returned from&start; or passed in a +<c>connected</c> message over the transport interface.</p> </desc> </func> diff --git a/lib/diameter/doc/src/seealso.ent b/lib/diameter/doc/src/seealso.ent index e5c284c6e8..c5a53670d0 100644 --- a/lib/diameter/doc/src/seealso.ent +++ b/lib/diameter/doc/src/seealso.ent @@ -4,7 +4,7 @@ %CopyrightBegin% -Copyright Ericsson AB 2012-2015. All Rights Reserved. +Copyright Ericsson AB 2012-2017. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. @@ -53,7 +53,7 @@ significant. <!ENTITY mod_application_opt '<seealso marker="diameter#application_opt">diameter:application_opt()</seealso>'> <!ENTITY mod_call_opt '<seealso marker="diameter#call_opt">diameter:call_opt()</seealso>'> <!ENTITY mod_capability '<seealso marker="diameter#capability">diameter:capability()</seealso>'> -<!ENTITY mod_evaluable '<seealso marker="diameter#evaluable">diameter:evaluable()</seealso>'> +<!ENTITY mod_eval '<seealso marker="diameter#eval">diameter:eval()</seealso>'> <!ENTITY mod_peer_filter '<seealso marker="diameter#peer_filter">diameter:peer_filter()</seealso>'> <!ENTITY mod_service_event '<seealso marker="diameter#service_event">diameter:service_event()</seealso>'> <!ENTITY mod_service_event_info '<seealso marker="diameter#service_event_info">diameter:service_event_info()</seealso>'> @@ -72,6 +72,7 @@ significant. <!ENTITY watchdog_timer '<seealso marker="#watchdog_timer">watchdog_timer</seealso>'> <!ENTITY mod_string_decode '<seealso marker="diameter#service_opt">diameter:service_opt()</seealso> <seealso marker="diameter#string_decode">string_decode</seealso>'> +<!ENTITY mod_decode_format '<seealso marker="diameter#service_opt">diameter:service_opt()</seealso> <seealso marker="diameter#decode_format">decode_format</seealso>'> <!-- diameter_app --> |