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That is, don't use a key constructed from an incoming Diameter header
unless the message is known to the dictionary in question. Otherwise
there are 2^32 application ids, 2^24 command codes, and 2 R-bits for an
ill-willed peer to choose from, each resulting in new keys in the
counter table (diameter_stats).
The usual {ApplicationId, CommandCode, Rbit} in a key is replaced by the
atom 'unknown' if the message in question is unknown to the decoding
dictionary.
Counters for messages sent and received by a relay are (still) not
implemented.
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The former were a little over-enthusiastic and could cause a node to be
logged to death if a peer Diameter node was sufficiently ill-willed.
The function calls are to diameter_lib:log/4, the arguments of which
identify the happening in question, and which does nothing but provide a
function to trace on. Many existing log calls have been shrunk.
The only remaining traffic-related report (hopefully) is that resulting
from {answer_errors, report} config, and this has been slimmed.
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* anders/diameter/rc_counters/OTP-11937:
Count encode errors in outgoing messages
Count decode errors in incoming requests
Count decode errors independently of result codes
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* anders/diameter/rc_counters/OTP-11891:
Count result codes in CEA/DWA/DPA
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* anders/diameter/watchdog_leak/OTP-11934:
Simplify sending of 'close' to watchdog
Fix watchdog table leak
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* anders/diameter/request_leak/OTP-11893:
Fix leaking request table
Add check that request table is empty to failover suite
Comment fix
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Only decode errors were counted previously. Keys are of the form
{Id, send, error}, where Id is:
{ApplicationId, CommandCode, Rbit} | unknown
The latter will be the case if not even a #diameter_header{} can be
constructed.
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Errors were only counted in incoming answers. Counters are keyed on
tuples of the same form:
{{ApplicationId, CommandCode, Rbit}, recv, error}
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Since the former doesn't exclude the latter.
Counter values are returned by diameter:service_info/2. They can
currently only be retrieved for a service, not for individual transports
or peer connections.
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Corresponding counters for other answer messages have been counted
previously, but those for CEA, DWA, and DPA have been missing since
diameter itself sends these messages and the implementation is as bit
more separate than it might be. The counters are keyed on values of the
following form.
{{ApplicationId, CommandCode, 0 = Rbit}, send|recv, {'Result-Code', RC}}
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There's no need to send the message immediately if there's no transport
configuration since that in itself means the service process will tell
the watchdogs to die.
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Commit ef5fddcb (diameter-1.4.1, R16B) caused the leak in the case of an
accepting watchdog with restrict_connections = false. It (correctly)
ensured the state remained at INITIAL but a subsequent 'close' message
to terminate the process was ignored since the state was not DOWN. In
fact, no 'close' was sent since there was no state transition or
previous connection: the former triggers the message from
diameter_service, the latter from diameter_watchdog. The message is now
sent to self() from the watchdog itself.
Send 'close' in the same way when multiple connections to the same peer
are allowed, to avoid waiting for a watchdog timer expiry for the
process to terminate in this case.
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A new connection writes the pid to the table diameter_request. The
normal handling is that loss of a connection leads to a watchdog state
change in the service process, which removes the entry, but this usually
won't happen in the case of diameter:stop_service/1 since the service
process is terminated without waiting for watchdog transitions.
The request table should really be service-specific, so that the table
is deleted when the service is stopped, which requires passing the table
identifier into request processes and handling that the table may not
exist. Just clear out the service-specific entries at service process
termination for now.
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* anders/diameter/17.0_release/OTP-11605:
Bring diameter_dbg into the present
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The module is just a collection of functions for retrieving or printing
information for the purpose of debugging. Various changes over several
releases had broken the table-listing functions diameter_peer/0 and
diameter_service/0. Add some minor tidying as well.
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* anders/diameter/17.0_release/OTP-11825:
Simplify xref tests in app suite
Add app suite test for app file runtime_dependencies
Generate runtime_dependencies in app file
Remove syntax_tools and runtime_tools from app file
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To avoid having to specify applications more than once.
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* anders/diameter/unicode_path/OTP-11655:
Fix unicode path failure in diameter_make:codec/2
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* anders/diameter/unicode/OTP-11686:
Use fun encoding to erl_parse:abstract/2
Adapt dictionary compilation to new default encoding
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* anders/diameter/pick_peer/OTP-11789:
Fix pick_peer case clause failure
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The former is used by the dictionary compiler, the latter by some
unfinished code in diameter_dbg. None of the corresponding modules are
included in the app file since they typically aren't needed/wanted on a
target system.
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* anders/diameter/17.0_release/OTP-11605:
Move info modules into own subdirectory
Include compiler and info modules in app file
Remove unused diameter_dbg:log/4
Remove case expecting a pre-R16B return value from os:type/1
Fix doc typo: required -> requires
Remove release note unrelated to functionality
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Possibly overkill for two modules but it mirrors their different
treatment by the makefile.
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Albeit as comments. This is just to make it more obvious that these
aren't include in the modules list, since they typically aren't
needed/wanted on a target system. Also add comments for the
corresponding dependencies on syntax_tools and runtime_tools, as well as
the optional runtime dependency on ssl.
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It was intended to replace diameter_lib:log/4 at some point but that was
a bad idea since diameter_dbg isn't included in the app file.
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The documented return value changed in commit c37a9761.
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This is an encoding that didn't exist at the time of the previous
commit, but which was added in commit 83b6daef. Use it to restrict
stringification to lists containing printable ascii.
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The problem is that the change in default encoding to utf8 in 17.0, in
commit 00e42967, changes the behaviour of erl_parse:abstract/1, which is
used by the dictionary compiler to turn terms into abstract code. In
particular, it transforms the orddict representation of a parsed
dictionary to contruct the return value of a dictionary module's dict/0
function. This orddict contains various lists, one of which is a list of
tuples of the form
{Name, Code, [VendorId], [Avp]}
where Name is an ASCII string and VendorId is a non-negative integer.
Using erl_parse:abstract/2 instead allows a string encoding to be
specified but regardless of what encoding is used, the result of
transforming our tuple might not be what we really want, which is for
Name to always be represented as a string form and [VendorId] to always
be represented as a cons form: the [VendorId] will always end up as a
string form if the integers are small enough. The only way around this
is to transform the tuple bit by bit, but modifying the code to do this
is quite a lot of work, for not much gain: it would be nice to produce
more readable output but nothing stops working without it.
This commit restores the pre-17.0 conversion by explicilty specifying
latin1 as the string encoding to erl_parse:abstract/2. The utf8 encoding
broke the compilation of some dictionares since unicode strings aren't
expected when writing the generated code to file.
Note that the latin1 encoding does reasonably well in practice, although
it mangles the Ericsson Vendor Id list [193] into a "LATIN CAPITAL
LETTER A WITH ACUTE". The utf8 encoding does worse, mangling the 3GPP
Vendor Id 10415 into "DESERET CAPITAL LETTER CHEE". An ascii encoding
would do better than latin1 but doesn't yet exist. (Encoding isn't
really what the option is. It's a string predicate: if the predicate is
true then represent as a string form, otherwise a cons form.)
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A dictionary path containing a unicode codepoint > 255 caused the
function to fail when iolist_to_binary/1 was applied to the path.
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In the case of {call_mutates_state, true} configuration on the service
in question, any peer selection that failed to select a peer resulted in
a case clause failure in diameter_service:pick_peer/5, when the call to
the service process returned false. This was noticed in the case of a
peer failover in which an alternate peer wasn't available.
The explicit matching is intentional, to match exactly what's expected.
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Most dependencies introduced are exactly the dependencies to other
applications found by xref. That is, there might be real dependencies
missing. There might also be pure debug dependencies listed that
probably should be removed. Each application has to be manually
inspected in order to ensure that all real dependencies are listed.
All dependencies introduced are to application versions used in
OTP 17.0. This since the previously used version scheme wasn't
designed for this, and in order to minimize the work of introducing
the dependencies.
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OTP-10229 (commit c4592b69) added these function to give access to all
addresses on a multihomed endpoint, their singular siblings not
returning anything useful in this case.
This fixes {accept, Match} config, which matches peer addresses against
configured addresses or regexps to decide whether or not a newly
established association should be retained. The functionality was added
in OTP-10893 (commit 9bbf27eb) but predated OTP-10229 by a few months.
It also fixes the addresses shown for SCTP associations in
diameter:service_info/2 output.
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* anders/diameter/17.0_release/OTP-11605:
vsn -> 1.6
Remove upgrade-related code
Update appup for 17.0
Avoid type gen_sctp:open_option() until it actually exists
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No longer needed to update code in runtime since the emulator is
restarted at a major release.
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Plan to make use of the emulator restart implied by a major release to
clean out some upgrade-related code.
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The type's existence is the subject of OTP-11139, which has been
gathering dust since R16B.
http://erlang.org/pipermail/erlang-bugs/2013-September/003765.html
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* anders/diameter/sctp_streams/OTP-11593:
Change interface for communicating outbound stream id to diameter_sctp
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The module uses the transport_data field of record diameter_packet to
communicate the stream on which the an incoming message is received and
on which an outgoing message should be sent, the previous interface
being that both are communicated as a tuple of the form {stream, Id}.
However, since diameter retains the value of an incoming request's
transport_data unless the corresponding answer message specifies
otherwise, the behaviour in this case is to send an answer on the
outbound stream with the same identifier as the that of the inbound
stream on which the request was received. If the inbound stream id is
greater than or equal to the number of outbound streams then this is
guaranteed to fail, causing the transport process in question to
terminate. There is no relationship between inbound and outbound stream
identifiers so diameter_sctp's imposition of one is simply wrong.
Outbound stream ids are now communicated with a different tuple:
{outstream, Id}, interpreted modulo the number of outbound streams.
Thus, retention of an inbound request's transport_data has no effect on
the selection of an outbound stream.
The change in interface is not strictly backwards compatible because of
the new atom for the outbound stream. However, as there is currently no
documented way of obtaining the available number of outbound streams for
a peer connection, there is no way for a client to have known the range
of ids from which it could reliably have chosen with the previous
interface, so any setting of the outbound stream has probably been
unintentional. Not explicitly specifying an outbound stream now results
in a round-robin selection.
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The case in which an AVP was defined as having type Grouped in
@avp_types without a corresponding specification in @grouped was
missing.
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Instead, add diameter_make:format_error/1 to allow the caller to format
if desired, which is what applications like compiler and yecc do. Use
this to check that the expected error is the one actually generated in
the compiler suite.
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* anders/diameter/R16B03_release/OTP-11499:
vsn -> 1.5
Update appup for OTP-11168
Update appup for OTP-11361
Add makefile to build example dictionaries
Add recent Diameter-related RFCs
Generate diameterc.1, not diameter_compile.1
Fix documentation typos
Fix appup blunder
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* anders/diameter/timer_confusion/OTP-11168:
Rename reconnect_timer -> connect_timer
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* anders/diameter/dictionary_make/OTP-11348:
Return compilable forms instead of beam
Document diameter_make:format/1 and diameter_make:flatten/1
Fix diameter_make:flatten/1
Modify type that currently causes dialyzer woe
Simplify and extend diameter_make interface
Add diameter_make:flatten/1, remove reformat/1
Adapt compiler suite to diameter_make
Remove dead code from codec suite
Extend diameter_make:codec/2
Don't pollute process dictionary in diameter_codegen:from_dict/4
Make forms a separate output from diameter_codegen
Remove last remnants of "spec"
Write as last step in code generation
Change extensions for debug output: .spec/forms -> .D/F
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That is, preprocessed forms that can be passed to compile:forms/1,2.
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To set @avp_vendor_id, @codecs and @custom_types as required for
imported avps.
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The intention was that the type would represent an improper list whose
head was an integer and whose tail was an orddict but that doesn't seem
to be dialyzer's interpretation anyway.
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In particular, make codec/2 flexible as to what's generated, the formats
(erl, hrl, parse, forms and beam) being passed in the options list and
defaulting to [erl, hrl]. The 'parse' format is the internal format to
which dictionaries are parsed, which can be manipulated by flatten/1
before being passed back to codec/2 or format/1.
Remove the (undocumented) dict/1,2 since codec/2 now subsumes it with
the 'parse' option.
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The latter is now unnecessary given that codec/2 can return a parse and
format/1 can return the dictionary format.
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