View Source Megaco Release Notes

This document describes the changes made to the Megaco system from version to version. The intention of this document is to list all incompatibilities as well as all enhancements and bugfixes for every release of Megaco. Each release of Megaco thus constitutes one section in this document. The title of each section is the version number of Megaco.

Megaco 4.7

Improvements and New Features

  • Erlang/OTP type specifications has been updated to eliminate overlapping domains.

    Own Id: OTP-19310 Aux Id: GH-8810, GH-8821, PR-8986

Megaco 4.6

Improvements and New Features

  • -callback attributes have been added to megaco_transport.

    Own Id: OTP-18806 Aux Id: PR-7740

  • Updated types and specs for all API modules.

    Own Id: OTP-18920 Aux Id: BL-322

  • The documentation has been migrated to use Markdown and ExDoc.

    Own Id: OTP-18955 Aux Id: PR-8026

Megaco 4.5

Improvements and New Features

  • Make megaco transports handle gen_tcp | gen_udp with socket backend on Windows (completion).

    Own Id: OTP-18599 Aux Id: OTP-18029

Megaco 4.4.4

Fixed Bugs and Malfunctions

  • Removed configure option --enable-sanitizers. It was untested and broken. Address sanitizer for the emulator has better support by the asan build target.

    Own Id: OTP-18538 Aux Id: GH-7031, PR-7078

Megaco 4.4.3

Improvements and New Features

  • Replace size/1 with either tuple_size/1 or byte_size/1

    The size/1 BIF is not optimized by the JIT, and its use can result in worse types for Dialyzer.

    When one knows that the value being tested must be a tuple, tuple_size/1 should always be preferred.

    When one knows that the value being tested must be a binary, byte_size/1 should be preferred. However, byte_size/1 also accepts a bitstring (rounding up size to a whole number of bytes), so one must make sure that the call to byte_size/ is preceded by a call to is_binary/1 to ensure that bitstrings are rejected. Note that the compiler removes redundant calls to is_binary/1, so if one is not sure whether previous code had made sure that the argument is a binary, it does not harm to add an is_binary/1 test immediately before the call to byte_size/1.

    Own Id: OTP-18432 Aux Id: GH-6672,PR-6793,PR-6784,PR-6787,PR-6785,PR-6682,PR-6800,PR-6797,PR-6798,PR-6799,PR-6796,PR-6813,PR-6671,PR-6673,PR-6684,PR-6694,GH-6677,PR-6696,PR-6670,PR-6674

Megaco 4.4.2

Improvements and New Features

  • A very minor improvement to the measurement tool.

    Own Id: OTP-18298

Megaco 4.4.1

Fixed Bugs and Malfunctions

  • Fixed various dialyzer related issues in the examples and the application proper.

    Own Id: OTP-18179 Aux Id: ERIERL-836

Improvements and New Features

  • There is a new configure option, --enable-deterministic-build, which will apply the deterministic compiler option when building Erlang/OTP. The deterministic option has been improved to eliminate more sources of non-determinism in several applications.

    Own Id: OTP-18165 Aux Id: PR-5965

Megaco 4.4

Improvements and New Features

  • Input for configure scripts adapted to autoconf 2.71.

    Own Id: OTP-17414 Aux Id: PR-4967

  • Megaco test suite(s) use the new peer module for node starts.

    Own Id: OTP-17910

Megaco 4.3

Fixed Bugs and Malfunctions

  • The compilation time is no longer recorded in BEAM files. There remained several undocumented functions that attempted to retrieve compilation times. Those have now been removed.

    Own Id: OTP-17962

Improvements and New Features

  • Update the performance and debug chapters of the megaco user's guide. Also some updates to the meas tools.

    Own Id: OTP-17839

Megaco 4.2

Improvements and New Features

  • [megaco_tcp] When connect fails, include more info in the error reason.

    Own Id: OTP-17817

Megaco 4.1

Improvements and New Features

  • It is now possible to configure the built-in transports (megaco_tcp and megaco udp) to use the new (gen_udp- and gen_tcp-) option 'inet_backend'.

    Own Id: OTP-17533

Megaco 4.0.1

Fixed Bugs and Malfunctions

  • Commit of generated configure script.

    Own Id: OTP-17420 Aux Id: OTP-17398, GH-4821

Megaco 4.0

Improvements and New Features

  • All the pre-v3 codec(s) (prev3a, prev3b and prev3c) was deprecated in OTP-23.0. They have now been removed.

    * POTENTIAL INCOMPATIBILITY *

    Own Id: OTP-16560

  • Removed deprecated functions marked for removal.

    Own Id: OTP-17049

Megaco 3.19.5.1

Fixed Bugs and Malfunctions

  • Commit of generated configure script.

    Own Id: OTP-17420 Aux Id: OTP-17398, GH-4821

Megaco 3.19.5

Fixed Bugs and Malfunctions

  • Fixed usage of AC_CONFIG_AUX_DIRS() macros in configure script sources.

    Own Id: OTP-17093 Aux Id: ERL-1447, PR-2948

Megaco 3.19.4

Fixed Bugs and Malfunctions

  • Empty statistics descriptor (now) allowed in both encode and decode for version 3.

    Own Id: OTP-17012 Aux Id: ERL-1405

Megaco 3.19.3

Fixed Bugs and Malfunctions

  • The expected number of warnings when (yecc) generating v2 and v3 (text) parser's was incorrect.

    Own Id: OTP-16836

Megaco 3.19.2

Fixed Bugs and Malfunctions

  • The v2 and v3 parsers could not properly decode some IPv6 addresses.

    Own Id: OTP-16818 Aux Id: ERIERL-526

Megaco 3.19.1

Fixed Bugs and Malfunctions

  • The mini parser could not properly decode some IPv6 addresses.

    Own Id: OTP-16631 Aux Id: ERIERL-491

Megaco 3.19

Improvements and New Features

  • Refactored the internal handling of deprecated and removed functions.

    Own Id: OTP-16469

  • The preliminary version 3 codec(s) prev3a, prev3b and prev3c has been deprecated and will be removed in OTP 24. The encoding config option 'version3' will continue to work until OTP 24.

    Own Id: OTP-16531

Megaco 3.18.8.4

Fixed Bugs and Malfunctions

  • Commit of generated configure script.

    Own Id: OTP-17420 Aux Id: OTP-17398, GH-4821

Megaco 3.18.8.3

Fixed Bugs and Malfunctions

  • Empty statistics descriptor (now) allowed in both encode and decode for version 3.

    Own Id: OTP-17012 Aux Id: ERL-1405

Megaco 3.18.8.2

Fixed Bugs and Malfunctions

  • The v2 and v3 parsers could not properly decode some IPv6 addresses.

    Own Id: OTP-16818 Aux Id: ERIERL-526

Megaco 3.18.8.1

Fixed Bugs and Malfunctions

  • The mini parser could not properly decode some IPv6 addresses.

    Own Id: OTP-16631 Aux Id: ERIERL-491

Megaco 3.18.8

Fixed Bugs and Malfunctions

  • The documented function megaco:get_sdp_record_from_PropertGroup/2 was a wrapper for megaco_sdp:get_sdp_record_from_PropertGroup/2 but did not actually exist. This has now been fixed.

    Own Id: OTP-16449

Improvements and New Features

  • Test suite completely reworked. Add (timestamp) utility functions for debugging and testing.

    Own Id: OTP-16158

Megaco 3.18.7

Fixed Bugs and Malfunctions

  • The meas example had not been updated for a long time, which caused it to not work. Also, it made use of deprecated functions (now()). This has now been fixed.

    Own Id: OTP-16061

Megaco 3.18.6

Fixed Bugs and Malfunctions

  • Fix various minor issues related to Dialyzer. Mostly these are dialyzer warnings, but there was also some minor bugs detected by Dialyzer.

    Own Id: OTP-15882

Megaco 3.18.5

Improvements and New Features

  • Minor updates to build system necessary due to move of configuration of crypto application.

    Own Id: OTP-15262 Aux Id: OTP-15129

  • Minor adjustments made to build system for parallel configure.

    Own Id: OTP-15340 Aux Id: OTP-14625

Megaco 3.18.4

Fixed Bugs and Malfunctions

  • Improved documentation.

    Own Id: OTP-15190

Megaco 3.18.3

Fixed Bugs and Malfunctions

  • Removed all old unused files in the documentation.

    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493

Megaco 3.18.2

Improvements and New Features

  • Typos have been fixed.

    Own Id: OTP-14387

Megaco 3.18.1

Improvements and New Features

  • Internal changes

    Own Id: OTP-13551

Megaco 3.18

Improvements and New Features

  • The runtime dependencies in the application resource file have been updated.

    Own Id: OTP-12762

Megaco 3.17.3

Improvements and New Features

  • Distribute autoconf helpers to applications at build time instead of having multiple identical copies committed in the repository.

    Own Id: OTP-12348

Megaco 3.17.2

Fixed Bugs and Malfunctions

  • Implement --enable-sanitizers[=sanitizers]. Similar to debugging with Valgrind, it's very useful to enable -fsanitize= switches to catch bugs at runtime.

    Own Id: OTP-12153

Megaco 3.17.1

Improvements and New Features

  • The default encoding of Erlang files has been changed from ISO-8859-1 to UTF-8.

    The encoding of XML files has also been changed to UTF-8.

    Own Id: OTP-10907

Megaco 3.17.0.3

Improvements and New Features

  • Updated doc files to utf8.

    Own Id: OTP-10907

Megaco 3.17.0.2

Improvements and New Features

  • Introduced functionality for inspection of system and build configuration.

    Own Id: OTP-11196

Megaco 3.17.0.1

Improvements and New Features

  • Postscript files no longer needed for the generation of PDF files have been removed.

    Own Id: OTP-11016

Megaco 3.17

Version 3.17 supports code replacement in runtime from/to version 3.16.0.3 and and 3.16.0.2.

Improvements and new features

-

Fixed bugs and malfunctions

  • Buffer overrun error while flex scanner processing property parm groups.

    This error occured only for large messages if a buffer realloc was needed while processing the property parm groups.

    Own Id: OTP-10998

    Aux Id: Seq 12263

Incompatibilities

-

Megaco 3.16.0.3

Version 3.16.0.2 supports code replacement in runtime from/to version 3.16.0.1, 3.16, 3.15.1.1, 3.15.1 and 3.15.

Improvements and new features

  • Where necessary, a comment stating encoding has been added to Erlang files. The comment is meant to be removed in Erlang/OTP R17B when UTF-8 becomes the default encoding.

    Own Id: OTP-10630

Fixed bugs and malfunctions

-

Incompatibilities

  • A number of binary encoding alternatives has been removed. The binary encoding option driver has been removed since this (the use of the asn1 linked in driver) is now default and there is now way to not use it. See configuration of binary encoding for more info.

Megaco 3.16.0.2

Version 3.16.0.2 supports code replacement in runtime from/to version 3.16.0.1, 3.16, 3.15.1.1, 3.15.1 and 3.15.

Improvements and new features

  • Allow whitespaces in installation path.

    It is now possible to give configure and make an installation/release path with whitespaces in it.

    Own Id: OTP-10107

  • Fix parallel make for behaviours.

  • Removed use of deprecated system flag, global_haeps_size, in the measurement tool mstone1.

Fixed bugs and malfunctions

-

Incompatibilities

-

Megaco 3.16.0.1

Version 3.16.0.1 supports code replacement in runtime from/to version 3.16, 3.15.1.1, 3.15.1 and 3.15.

Improvements and new features

  • Fixed some faulty test cases.

  • Removed use of deprecated system flag, scheduler_bind_type, in the measurement tool mstone1.

    Own Id: OTP-9949

Fixed bugs and malfunctions

-

Incompatibilities

-

Megaco 3.16

Version 3.16 supports code replacement in runtime from/to version 3.15.1.1, 3.15.1 and 3.15.

Improvements and new features

  • Minor improvements to the measurement tool mstone1.

    Own Id: OTP-9604

  • ASN.1 no longer makes use of a driver to accelerate encode/decode, instead it uses NIFs. The encoding config option is still the same, i.e. driver.

    Own Id: OTP-9672

  • The profiling test tool has been rewritten.

    Håkan Mattsson

    Own Id: OTP-9679

  • The flex driver has been updated to support the new driver format (changed to enable 64-bit aware drivers).

    Own Id: OTP-9795

Fixed bugs and malfunctions

-

Incompatibilities

-

Megaco 3.15.1.1

Version 3.15.1.1 supports code replacement in runtime from/to version 3.15.1 and 3.15.

Improvements and new features

  • Correct various XML errors.

    Own Id: OTP-9550

Fixed bugs and malfunctions

-

Megaco 3.15.1

Version 3.15.1 supports code replacement in runtime from/to version 3.15, 3.14.1.1, 3.14.1 and 3.14.

Improvements and new features

-

Fixed bugs and malfunctions

  • Fixing miscellaneous things detected by dialyzer.

    Own Id: OTP-9075

Megaco 3.15

Improvements and New Features

  • Fixing auto-import issues.

    Own Id: OTP-8842

Fixed bugs and malfunctions

-

Megaco 3.14.1.1

Version 3.14.1.1 supports code replacement in runtime from/to version 3.14.1, 3.14, 3.13, 3.12 and 3.11.3.

Improvements and new features

Fixed bugs and malfunctions

-

Megaco 3.14.1

Version 3.14.1 supports code replacement in runtime from/to version 3.14, 3.13, 3.12 and 3.11.3.

Improvements and new features

  • A minor compiler related performance improvement.

    Own Id: OTP-8561

Fixed bugs and malfunctions

  • A race condition when, during high load, processing both the original and a resent message and delivering this as two separate messages to the user.

    Note that this solution only protects against multiple reply deliveries!

    Own Id: OTP-8529

    Aux Id: Seq 10915

  • Fix shared libraries installation.

    The flex shared lib(s) were incorrectly installed as data files.

    Peter Lemenkov

    Own Id: OTP-8627

  • Eliminated a possible race condition while creating pending counters.

    Own Id: OTP-8634

    Aux Id: Seq 11579

Megaco 3.14

Version 3.14 supports code replacement in runtime from/to version 3.13, 3.12 and 3.11.3.

Improvements and new features

  • Various changes to configure and makefile(s) to facilitate cross compilation (and other build system improvements).

    Own Id: OTP-8323

  • Added a help target in the test Makefile to explain the most useful make targets, used when testing the application using the test-server provided with megaco.

    Own Id: OTP-8362

  • Adapted megaco_filter to the new internal format.

    Own Id: OTP-8403

Fixed bugs and malfunctions

  • Callbacks, when the callback module is unknown (undefined), results in warning messages.

    A race condition scenario. As part of a cancelation operation, replies with waiting acknowledgements is cancelled. This includes informing the user (via a call to the handle_trans_ack callback function). It is possible that at this point the connection data has been removed, which makes it impossible for megaco to perform this operation, resulting in the warning message. The solution is to also store the callback module with the other reply information, to be used when cleaning up after a cancelation.

    Own Id: OTP-8328

    Aux Id: Seq 11384

Megaco 3.13

Version 3.13 supports code replacement in runtime from/to version 3.12 and 3.11.3.

Improvements and new features

  • A minor optimization by using ets:update_element instead of ets:insert for some table updates.

    Own Id: OTP-8239

  • The documentation is now built with open source tools (xsltproc and fop) that exists on most platforms. One visible change is that the frames are removed.

    Own Id: OTP-8249

Fixed bugs and malfunctions

-

Incompatibilities

-