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2017-09-04Rename field in codec map: dictionary -> app_dictionaryAnders Svensson
To better reflect what the field is: field 'module' is the dictionary module that's calling diameter_gen to decode a list of AVP, while field 'app_dictionary' is the dictionary module defining the message being decoded.
2017-09-04Add RFC 7683 Diameter Overload Indicator Conveyance text and dictionaryAnders Svensson
Which motivates the avp_dictionaries config that will be added in a subsequent commit.
2017-09-04Fix decode undefAnders Svensson
Function avp/5 isn't exported from dictionary modules. Not necessarily intentional, but don't just export it since that requires recompilation of all dictionary modules, since the function is in diameter_gen.hrl. Not having to recompile was the main motivation for moving most of the included code to module diameter_gen in commit 205521d3. This reveals a weakness in the decode of answers setting the E-bit: any AVP that isn't defined by the common application won't be decoded; the diameter_avp records that these are packed into (in the 'AVP' field of a message record, or equivalent) will have value = undefined. This is nothing new (same in OTP 19), but the values should be decoded. Fix it (and the lack of test coverage) in a subsequent commit that will add avp_dictionaries config.
2017-09-04Fix dictionary compilation error messageAnders Svensson
Adding a second {Vendor-Id} to the common CER definition results in this error: ** AVP CER at line 85 already referenced at line 84 That is, the error incorrectly refers to the message name (CER) where the AVP name (Vendor-Id) is expected.
2017-09-01Map less in traffic suiteAnders Svensson
By just decoding to map in the client, instead of to record first. The record decode is exercised enough in the server and in other suites.
2017-09-01Fix decode_format doc oversightsAnders Svensson
diameter_codec(3) referred only to the record format in places. The configurable format was added in commits 722fa415 and then 55e65b26.
2017-09-01Rename decode_format false to noneAnders Svensson
Which reads better and makes it easier to distinguish this false from others.
2017-09-01Tweak {decode_format, false} semanticsAnders Svensson
Represent the decoded message by its atom-valued name in diameter_packet.msg, which makes trace much more readable. A diameter_avp.value is untouched (ie. undefined): the AVP name is already in the name field.
2017-09-01Fix dialyzer specAnders Svensson
Which dialyzer hasn't noticed.
2017-09-01Merge branch 'anders/diameter/config_consistency/OTP-14555' into ↵Anders Svensson
anders/diameter/decode_format/OTP-14511 * anders/diameter/config_consistency/OTP-14555: Fix strict_arities blunder Fix minor error-handling blunder Let strict_mbit and incoming_maxlen be configured per transport Let a service configure default transport options Rename type evaluable -> eval Document transport_opt() strict_capx Rename transport_opt() capx_strictness to strict_capx
2017-09-01Fix strict_arities blunderAnders Svensson
Remove value from the merged map, not from the maps being merged. Bundled in commit 5f3becad.
2017-08-31Fix minor error-handling blunderAnders Svensson
Leading to this admonition from dialyzer: diameter_config.erl:670: The variable No can never match since previous clauses completely covered the type 'ok' The throw was caught, but resulted in an error return without the intended information.
2017-08-31Fix handling of Proxy-Info in answers formulated by diameterAnders Svensson
RFC 6733 says this: 6.2. Diameter Answer Processing When a request is locally processed, the following procedures MUST be applied to create the associated answer, in addition to any additional procedures that MAY be discussed in the Diameter application defining the command: ... o Any Proxy-Info AVPs in the request MUST be added to the answer message, in the same order they were present in the request. This wasn't done when a handle_request callback returned a Result-Code in an 'answer-message' or protocol_error tuple, causing diameter itself to construct the answer message. This form of answer is just a convenience, since the callback can always return an answer that it constructs itself.
2017-08-31Fix extraction of Experimental-Result for counter keysAnders Svensson
The introduction of decode_format in commit 722fa415 (and then 55e65b26) meant the value was not necessarily the intended tuple.
2017-08-31Rename variableAnders Svensson
It's no longer the AVP name as of the parent commit, but the name of the field/member the value will be stored in. Typically the AVP name, but possibly 'AVP'.
2017-08-31Fix decode of too many generic AVPsAnders Svensson
That is, when the arity of an 'AVP' field has an upper bound. This shouldn't happen in practice, but if an AVP is known but its name not explicit in the message grammar then its count was confused with that of AVPs packed into the 'AVP' field.
2017-08-31Enumerate AVPs in diameter_avp.index (again)Anders Svensson
Commit 96cd627a changed the way the index field was used, but the enumeration is used in at least one known application (as a pointer from elements of diameter_packet.errors to elements of diameter_packet.avps) and the motivation for the change is questionable: the lookup that was avoided was unnecessary given that it was already performed in incrementing a counter. Revert to enumerating as before in the non-relay case, but not in the relay case since there's no corresponding usecase.
2017-08-28Fix influence of decode_format on service eventsAnders Svensson
Decoded CER/CEA messages are passed in events messages that can be subscribed to using diameter:subscribe/1. A configured decode_format was not reflected in these, messages always being passed as records. Clarify that strict_arities only applies to message callbacks.
2017-08-25Let strict_mbit and incoming_maxlen be configured per transportAnders Svensson
Since these can make sense per peer. The remaining service-only options either belong there or make little sense being configured per transport.
2017-08-25Let a service configure default transport optionsAnders Svensson
Only a default spawn_opt has been possible to configure, but there's no reason why most others should need to be configured per transport. Those options that still only make sense on a transport are transport_module/config (because of the semantics of multiple values), applications/capabilities (since these override service options), and private (since it's only to allow user-specific options in a backwards compatible way).
2017-08-24Rename type evaluable -> evalAnders Svensson
Export the old type as a synonym for backwards compatability. The name evaluable is a bit too awkward.
2017-08-24Document transport_opt() strict_capxAnders Svensson
2017-08-24Rename transport_opt() capx_strictness to strict_capxAnders Svensson
To follow the naming of options like strict_mbit and more. Still accept capx_strictness since this is known to be used. Introduced in commit e4f28f3b.
2017-08-22Work around more common_test woeAnders Svensson
Testcase init functions are getting Config from groups and suites they're not in. Presumably related to the problems worked around in the parent commit.
2017-08-17Work around unexpected common_test behaviourAnders Svensson
diameter_traffic_SUITE has four layers of nested groups, so when a testcase is run it should get Config from four init_per_group plus one init_per_testcase. This isn't what happens: Config is being accumulated from several init_per_group in some manner that isn't clear, and the skip in the parent commit somehow results in growing test_server_gl:init/1 processes that eventually consume all memory. Replacing rather than prepending to Config in init_per_group works around this, but the common_test behaviour seems wrong.
2017-08-11Randomly skip groups in traffic suiteAnders Svensson
To limit the number of testcases being run.
2017-08-11Randomly disable traffic counters in traffic suiteAnders Svensson
To exercise the new traffic_counters option.
2017-08-10Add service_opt() traffic_countersAnders Svensson
To be able to disable the counting of messages for which application callbacks take place. Messages sent/handled by diameter itself are always counted.
2017-08-10Fix type specAnders Svensson
That dialyzer hasn't noticed is broken.
2017-08-10Split AVPs at decodeAnders Svensson
Despite what the Efficiency Guide says about match being more efficient, split_binary appears to be slightly faster. (Although this one extraction is a drop in the bucket.) Binary optimizations aren't an issue during decode.
2017-08-10Avoid unnecessary copying of binaries in diameter_tcpAnders Svensson
Since messages are accumulated by appending binaries as of three commits back, the accumulated binary is prone to being copied, as discussed in the Efficiency Guide. Matching the Message Length header as bytes are being accumulated is one cause of this, so work around it by splitting the binary and extracting the length without a match. This doesn't feel like something that should be necessary: that matching a binary would cause an append to copy isn't obvious. The first attempt at simplifying the accumulation was simply to append an incoming binary to the current fragment, match against <<_, Len:24, _/binary>> to extract the length, and then test if there are enough bytes for a message. This lead to horrible performance (response times for 2 MB messages approximately 100 times worse than previously), and it wasn't at all obvious that the reason was the accumulated binary being copied with each append as a result of the match. Using split_binary avoids the match context that forces the copying.
2017-08-10Don't update diameter_tcp state unnecessarilyAnders Svensson
Not with each setopts to re-activate the socket.
2017-08-10Don't update diameter_tcp state unnecessarilyAnders Svensson
Only reset the fragment after all messages have been extracted.
2017-08-10Simplify extraction of incoming Diameter messages in diameter_tcpAnders Svensson
Appending to a binary is efficient, so just append message fragments Only match out the length once per message since doing so for every packet from TCP causes the binary to be copied.
2017-08-10Restructure/simplify message reception in diameter_peer_fsmAnders Svensson
Create less garbage.
2017-08-10Sleep randomly at the start of (parallel) traffic testcasesAnders Svensson
2017-08-10Fix ct return value in traffic suiteAnders Svensson
Which has had no negative effect.
2017-08-10Fix type specAnders Svensson
That dialyzer hasn't noticed is broken.
2017-08-03Optimize sub-binariesAnders Svensson
Also inline incr/8 and associated functions that were needed for the compiler to accept the optimization, since this does make for a measuable improvement.
2017-08-03Optimize sub-binariesAnders Svensson
With ERL_COMPILER_OPTIONS=bin_opt_info, before: base/diameter_codec.erl:508: Warning: NOT OPTIMIZED: the binary matching instruction that follows in the same function have problems that prevent delayed sub binary optimization (probably indicated by INFO warnings) And after: base/diameter_codec.erl:508: Warning: OPTIMIZED: creation of sub binary delayed This has a surprisingly large impact on the performance of diameter_codec:collect_avps/2: about 15% faster in one testcase on a RAR with 7 AVPs.
2017-08-03Count AVPs in #diameter_avp.indexAnders Svensson
The index field in record diameter_avp was previously used to enumerate AVPs so that the list could be returned in some cases, since diameter_codec:collect_avps/2 (now /1) reversed the order. That's no longer the case as of the grandparent commit, so use the field to enumerate instances of the same AVP instead, and only when arities are being checked, to save having to look them up in the map when checking for 5009 errors, or counting AVPs at all in diameter_codec:collect_avps/1.
2017-08-03Don't extract options unnecessarily at encodeAnders Svensson
Extract strict_arities once and pass it through as an argument.
2017-08-03Redo message decode as a single passAnders Svensson
Decode has previously been two passes: first chunk the message into a reversed list of toplevel diameter_avp records, then fold through the reversed list to build the full result. Various workarounds have made it a bit more convoluted than it should be however. Rework it completely, turning the previous 2-pass tail-recursive implementation into a 1-pass body recursive one. The relay decode still exists in diameter_codec, as a stripped down version of the full decode in diameter_gen.
2017-08-03Use relaxed arity checks in traffic suiteAnders Svensson
2017-08-03Be forgiving of non-list values at encodeAnders Svensson
2017-08-03Add service_opt() strict_aritiesAnders Svensson
To be able to disable the relatively expensive check that the number of AVPs received in a message or grouped AVP agrees with the dictionary in question. The may well be easier for the user in handle_request/answer callbacks, when digesting the received message, and in some cases may not be important. The check at encode can also be disabled, allowing messages that don't agree with the dictionary in question to be sent, which can be useful in test (at least).
2017-08-03Fix detection of 5009 errorsAnders Svensson
As noted in the parent commit, the wrong AVPs were reported, being counted from the back of the message instead of the front. Both 5005 and 5009 errors are now detected after the message is decoded.
2017-08-03Test Result-Code 5009 in traffic suiteAnders Svensson
Aka DIAMETER_AVP_OCCURS_TOO_MANY_TIMES. This reveals a fault. The RFC says this: A message was received that included an AVP that appeared more often than permitted in the message definition. The Failed-AVP AVP MUST be included and contain a copy of the first instance of the offending AVP that exceeded the maximum number of occurrences. The list of AVPs is reversed when diameter checks arities, so Failed-AVP contains the wrong AVP, causing the new testcase to fail.
2017-08-03Don't count AVPs unnecessarily at encodeAnders Svensson
Stop counting when there can be no arity errors.
2017-08-03Test decode_format record_from_map in traffic suiteAnders Svensson