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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.
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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.
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To limit the number of testcases being run.
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To exercise the new traffic_counters option.
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Which has had no negative effect.
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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.
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Since the number is now under 50K again. Also make testing of individual
groups or testcases easier.
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Use the same [MsgName | Avps] representation as for the list decode, but
with Avps a map instead of a AVP name/values list. As a result, don't
set the message/AVP name on an additional key in the map, which felt a
bit odd. Messages are [MsgName :: atom() | map()], Grouped AVPs are just
map().
Fix at least one problem in the traffic suite along the way: with
decode_format false, the own decode in to_map/2 didn't know whether or
not to decode strings, resulting on some failures.
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For slightly better readability in the ct logs
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To reduce the number of combinations tested, as in the parent commit.
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To reduce the number of config combinations that are tested. The
encoding is the format in which messages are provided to diameter for
encode (to binary), and if there is any difference in the end result
then the peer will detect this at decode, independently of its encoding
format.
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{record_decode, map} is a bit too quirky.
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One for each server decoding/encoding/container combination is overkill.
Just want a few from which one can be chosen in the pick_peer callback.
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Instead of to lists, to simplify matching.
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Matched a byte instead of a bit, and increment/decrement wasn't
symmetric. Allow more requests since some requests timeout.
Bungled in commit 09089872.
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Only exercising the standard dictionaries has missed some problems in
the past.
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* anders/diameter/capx_vs_dpr/OTP-14338:
Let candidate peers be passed to diameter:call/4
Comment on RFC ambiguity regarding application identifiers
Remove trailing whitespace
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* anders/diameter/performance/OTP-14343: (50 commits)
Let spawn_opt config replace erlang:spawn_opt/2 for request processes
Move (most of) diameter_gen.hrl to diameter_gen.erl
Change signature associated with dictionary @custom_type/@codecs
Avoid sending answer terms between processes unnecessarily
Refactor handling of incoming requests
Restore diameter_codec:decode/2, update diameter_codec(3)
Add diameter_codec option ordered_encode
Restore undocumented Failed-AVP setting convenience
Fix/simplify setting of one Failed-AVP
Avoid recreating records
Avoid recreating records
Avoid recreating records
Avoid recreating records
Adapt test suites to modified encode/decode
Simplify diameter_caps construction
Don't compute URI defaults unnecessarily
Don't deconstruct {TPid, Caps} unnecessarily
Remove use of process dictionary in decode
Remove minor diameter_config bloat
Fix maximum AVP arity check
...
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By accepting an MFA that is applied to the fun that is otherwise spawned
for each incoming request, to allow handler processes to be reused. This
is not yet documented and may change, but the motivation is to let spawn
be replaced by process pool, from which the MFA selects. A list-valued
spawn_opt is equivalent to {erlang, spawn_opt, [Opts]}.
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Outgoing requests no longer write to the request table, as of commit
a4da06a5.
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Decode on both ends or not, since the choice doesn't affect the peer.
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To determine the wrapping of messages passed to recv callbacks and into
diameter. The default passing of the input stream in transport_data is
probably of no practical use, but has been set since time immemorial.
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Corresponding to diameter_tcp callbacks a few commits back. Exercise the
callbacks in the traffic suite.
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Since the number of configuration variants tested makes for (too) many.
Randomly select a subset of testcases in each configuration group.
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Faster than lists:duplicate/2.
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By explicitly skipping instead of omitting testcases from groups.
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Autoskip traffic testcases if transport isn't established instead of
having traffic cases run and fail.
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Testcase is already run elsewhere on the suite.
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Since the large strings copied between processes cause testcases to fail
randomly.
Option string_decode was added in commit 1590920c.
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Listening transports weren't removed, which diameter_reg:subs/0 revealed.
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Each service process maintains a dictionary of peers, mapping an
application alias to a {pid(), #diameter_caps{}} list of connected
peers. These lists are potentially large, peers were appended to the end
of the list for no particular reason, and these long lists were
constructed/deconstructed when filtering them for pick_peer callbacks.
Many simultaneous outgoing request could then slow the VM to a crawl,
with many scheduled processes mired in list manipulation.
The pseudo-dicts are now replaced by plain ets tables. The reason for
them was (once upon a time) to have an interface interchangeable with a
plain dict for debugging purposes, but strict swapablity hasn't been the
case for some time now, and in practice a swap has never taken place.
Additional tables mapping Origin-Host/Realm have also been introduced,
to minimize the size of the peers lists when peers are filtered on
host/realm. For example, a filter like
{any, [{all, [realm, host]}, realm]}
is probably a very common case: preferring a Destination-Realm/Host
match before falling back on Destination-Realm alone. This is now more
efficiently (but not equivalently) expressed as
{first, [{all, [realm, host]}, realm]}
to stop the search when the best match is made, and extracts peers from
host/realm tables instead of searching through the list of all peers
supporting the application in question. The code to try and start with a
lookup isn't exhaustive, and the 'any' filter is still as inefficient as
previously.
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* anders/diameter/17/time/OTP-12926:
Simplify time manipulation
Remove use of monotonic time in pre-18 code
Remove unnecessary redefinition of erlang:max/2
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By doing away with more wrapping that the parent commit started to
remove.
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OTP-12845
* bruce/change-license:
fix errors caused by changed line numbers
Change license text to APLv2
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* anders/diameter/sctp/OTP-12768:
Fix connection timeouts in test transports
Fix start order of alternate transports
Log discarded answers
Ensure accepting processes are first in, first out
Remove upgrade-related code
Be less parallel in traffic suite
Increase send/receive buffers for testsuite SCTP listeners
Decrease unnecessarily long testsuite timetraps
Simplify accepting transport start
Simplify peeloff signaling
Simplify socket close at terminate
Don't monitor listener after peeloff
Don't receive initial messages out of order
Remove assumption that SCTP association ids will be unique
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At the current count, there are 128 groups run in parallel, each of
which runs 52 testcases in parallel. That makes for 128*52 = 6656
testcases, which is probably also a factor in the sporadic failures
addressed by the parent commit. Don't run the 128 groups in parallel.
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RFC 6733 says this of Failed-AVP in 7.5:
In the case where the offending AVP is embedded within a Grouped AVP,
the Failed-AVP MAY contain the grouped AVP, which in turn contains
the single offending AVP. The same method MAY be employed if the
grouped AVP itself is embedded in yet another grouped AVP and so on.
In this case, the Failed-AVP MAY contain the grouped AVP hierarchy up
to the single offending AVP. This enables the recipient to detect
the location of the offending AVP when embedded in a group.
It says this of DIAMETER_INVALID_AVP_LENGTH in 7.1.5:
The request contained an AVP with an invalid length. A Diameter
message indicating this error MUST include the offending AVPs
within a Failed-AVP AVP. In cases where the erroneous AVP length
value exceeds the message length or is less than the minimum AVP
header length, it is sufficient to include the offending AVP
header and a zero filled payload of the minimum required length
for the payloads data type. If the AVP is a Grouped AVP, the
Grouped AVP header with an empty payload would be sufficient to
indicate the offending AVP. In the case where the offending AVP
header cannot be fully decoded when the AVP length is less than
the minimum AVP header length, it is sufficient to include an
offending AVP header that is formulated by padding the incomplete
AVP header with zero up to the minimum AVP header length.
The AVPs placed in the errors field of a diameter_packet record are
intended to be appropriate for inclusion in a Failed-AVP, but neither of
the above paragraphs has been followed in the Grouped case: the entire
faulty AVP (non-faulty components and all) has been included. This made
it impossible to identify the actual faulty AVP in all but simple case.
This commit adapts the decode to the RFC, and implements the suggested
single faulty AVP, nested in as many Grouped containers as required.
The best-effort decode of Failed-AVP in answer messages, initially
implemented in commit 0f9cdbaf, is also applied.
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Previously it was only run over TCP.
Configure a pool of accepting processes since simultaneous connections
are otherwise prone to rejection, as discussed in commit 4b691d8d.
Tweak timeouts to more reasonable values.
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The send_error testcase tested that Session-Id in an answer-message was
not undefined, but that's always the case since the AVP has arity 0 or
1. The correct test is that it's a list of length 1, to ensure that
diameter has inserted the session id as expected.
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