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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'.
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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.
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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.
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Make handling of match contexts stricter
OTP-14591
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* lukas/erts/port_SUITE_dropped_commands_fix:
erts: Fix port_SUITE:dropped_commands tc
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* dszoboszlay/run-dropped_commands-test:
Execute the dropped_commands test case in port_SUITE
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such as a sub-binary, of a correct utf8 string,
that ends in the middle of a character.
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* dgud/kernel/fix-hanging-io/OTP-14571:
Always reply to sync requests
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beam_validator could fail issue a diagnostic when a register
that was supposed to be a match context was not guaranteed to
be a match context.
The bug was in merging of types. Merging of a match context with
another term would result in a match context. That is wrong. Merging
should produce a more general type, not a narrower type. Also, the
valid slots in two match contexts should be combined with 'band', not
'bor'.
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There's no reason for sending ordered since request handling is
concurrent: different processes handling incoming requests can't know in
which order they were received on the transport, and different processes
sending requests can't know the order in which they're sent.
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For the same reason as unordered delivery is delayed in the grandparent
commit. Delivery is ordered only within a stream, so until a second
message is received from the peer, there's no guarantee that a second
outgoing request won't be received before the initial capablities
exchange message. Rotation begins upon reception of a second message
from the peer, messages being sent on stream 0 until then.
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* anders/diameter/config_consistency/OTP-14555:
Let strict_mbit and incoming_maxlen be configured per transport
Let a service configure default transport options
Rename type evaluable -> eval
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* anders/diameter/upgrade/OTP-14552:
Fix compatibility of remote send
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* anders/diameter/strict_capx/OTP-14546:
Document transport_opt() strict_capx
Rename transport_opt() capx_strictness to strict_capx
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* anders/diameter/performance/OTP-14521:
Fix influence of decode_format on service events
Work around more common_test woe
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* anders/diameter/loopback_any/OTP-14544:
Use loopback/any config in examples suite
Handle loopback/any as local address in diameter_tcp/sctp
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* anders/diameter/codec/OTP-14511:
Use map decoding in example client
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* anders/diameter/caseless/OTP-14535:
Replace calls to inet_parse(3)
Fix regexp match of accept tuple in diameter_tcp/sctp
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By randomly setting the number of outbound streams on associations.
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RFC 6733 say the below about head-of-line blocking and SCTP, the
suggestion of unordered sending being new compared to the RFC 3588.
Until now, all delivery in diameter_sctp has been ordered, and
roundrobin over available streams unless the user passes a stream
identifier in an outgoing diameter_packet record. This commit changes
this to use unordered delivery when there's only a single outbound
stream to choose from.
The special case at capabilities exchange is handled by only starting to
send unordered after the second message from the peer has been received.
(First message after capabilities exchange, as the RFC probably means.)
The special case at DPR isn't handled, since there's no knowing the
order in which a peer will answer: a node that sends DPR while it has
other requests outstanding can't expect that the latter will be answered
before DPR, even if delivery is ordered since incoming requests are
handled concurrently. If it wants a guarantee then it simply has to wait
for answers before sending DPR.
A user can force all delivery to be unordered by specifying
{sctp_default_send_params, #sctp_sndrcvinfo{flags = [unordered]}}
as a config option to diameter_sctp, but in this case there's no
handling of a request being sent directly after CEA since there's no
ordered flag to override the default.
RFC 6733:
2.1.1. SCTP Guidelines
Diameter messages SHOULD be mapped into SCTP streams in a way that
avoids head-of-the-line (HOL) blocking. Among different ways of
performing the mapping that fulfill this requirement it is
RECOMMENDED that a Diameter node send every Diameter message (request
or response) over stream zero with the unordered flag set. However,
Diameter nodes MAY select and implement other design alternatives for
avoiding HOL blocking such as using multiple streams with the
unordered flag cleared (as originally instructed in RFC 3588). On
the receiving side, a Diameter entity MUST be ready to receive
Diameter messages over any stream, and it is free to return responses
over a different stream. This way, both sides manage the available
streams in the sending direction, independently of the streams chosen
by the other side to send a particular Diameter message. These
messages can be out-of-order and belong to different Diameter
sessions.
Out-of-order delivery has special concerns during a connection
establishment and termination. When a connection is established, the
responder side sends a CEA message and moves to R-Open state as
specified in Section 5.6. If an application message is sent shortly
after the CEA and delivered out-of-order, the initiator side, still
in Wait-I-CEA state, will discard the application message and close
the connection. In order to avoid this race condition, the receiver
side SHOULD NOT use out-of-order delivery methods until the first
message has been received from the initiator, proving that it has
moved to I-Open state. To trigger such a message, the receiver side
could send a DWR immediately after sending a CEA. Upon reception of
the corresponding DWA, the receiver side should start using out-of-
order delivery methods to counter the HOL blocking.
Another race condition may occur when DPR and DPA messages are used.
Both DPR and DPA are small in size; thus, they may be delivered to
the peer faster than application messages when an out-of-order
delivery mechanism is used. Therefore, it is possible that a DPR/DPA
exchange completes while application messages are still in transit,
resulting in a loss of these messages. An implementation could
mitigate this race condition, for example, using timers, and wait for
a short period of time for pending application level messages to
arrive before proceeding to disconnect the transport connection.
Eventually, lost messages are handled by the retransmission mechanism
described in Section 5.5.4.
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We start the port in the started process in order
to get the messages in the correct place and also
so that unloading the port driver does not kill the
test process.
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Otherwise processes doing io could get stuck.
See ERL-472.
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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.
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Remove time-consuming ethread_SUITE from smoke tests
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The ethread_SUITE is unlikely to ever find a real bug
introduced in a pull request, but it frequently times
out when run by Travis CI.
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* maint-20:
Updated OTP version
Prepare release
dialyzer: Fix a bug where merging PLT:s could lose info
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Since these can make sense per peer. The remaining service-only options
either belong there or make little sense being configured per transport.
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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).
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Fix disksup:get_disksup_data() for High Sierra
OTP-14560
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* rickard/btm-auto-cleanup-bug/OTP-14554:
Fix BIF timer race between timeout and auto cleanup
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* rickard/timer-sid-bug/OTP-14548:
Fix scheduler id field in timers
# Conflicts:
# erts/emulator/beam/erl_hl_timer.c
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* hasse/dialyzer/fix_merge_plts/ERIERL-53/OTP-14558:
dialyzer: Fix a bug where merging PLT:s could lose info
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* johanclaesson/fprof/PR-1460/OTP-14500:
fprof: Sum callers and callees
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When sampling multiple processes and analyzing with totals true sum
together all caller and callee entries which concerns the same
function. Previous behaviour was to report each contributing entry.
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Export the old type as a synonym for backwards compatability. The name
evaluable is a bit too awkward.
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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.
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* rickard/btm-auto-cleanup-bug/OTP-14554:
Fix BIF timer race between timeout and auto cleanup
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* rickard/timer-sid-bug/OTP-14548:
Fix scheduler id field in timers
Conflicts:
erts/emulator/beam/erl_hl_timer.c
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Emacs: Fix default target for xref-find-references
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* ingela/ssl/dtls-alert-handling/OTP-14078:
dtls: Customize alert handling for DTLS over UDP
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A missing call to ets:safe_fixtable/2 meant that information
was sometimes lost when merging PLT:s.
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* ingela/ssl/tls-vs-dtls-version:
ssl: DTLS packet support
ssl: Enable dtls tests
ssl: Adjust ALPN and next protocol to work with DTLS
ssl: Enable more DTLS tests
ssl: negotiated_hashsign/4 expects TLS version to function correctly
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Test that DTLS handles "high" level packet types as http-packet types.
Low level packet type as {packet, 2} we will consider later if they
should be relevant to support or not.
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