[erlang-questions] Erlang/OTP 21.0-rc1 (Release Candidate)

[Loïc Hoguin]

Hello!

Just a quick heads up, having a couple issues:

* It doesn't compile on FreeBSD. I can get you more details later but 
"kerl build git https://github.com/erlang/otp OTP-21.0-rc1 OTP-21.0-rc1" 
might be a quicker alternative.

* SSL is broken. See [1] for example. I can see the same thing happening 
on 5 different Linux distributions (with different OpenSSL versions) and 
on OSX. A quick try in the shell is not much better:

1> ssl:start().
ok
2> ssl:connect("google.com", 80, []).
{error,{tls_alert,"bad record mac"}}

Keep up the good work!

[1] 
https://builds.ninenines.eu/logs/ranch/78/ubuntu/ct_run.ct_ranch@ubuntu0.2018-05-03_11.12.51/ninenines.ranch.acceptor_SUITE.logs/run.2018-05-03_11.12.52/acceptor_suite.ssl_echo.html

On 05/02/2018 01:37 PM, Henrik Nord X wrote:
> OTP 21 Release Candidate 1
> 
> This is the first of two planned release candidates before the OTP 21
> release. The intention whit this release is that you as users try it
> and give us feedback if something does not work as expected. Could be a
> bug,an unexpected incompatibility, a significant change of
> characteristics in a negative direction, etc.
> 
> Erlang/OTP 21 is a new major release with new features, improvements as
> well as incompatibilities.
> 
> Potential Incompatibilities
> 
>   * All Corba applications are now moved from the OTP repository
>      * A new Corba repository will be created https://github.com/erlang
>   * New applications ftp and tftp, moved from inets
>   * ssl no longer supports 3_DES cipher suites or RSA-key exchange
> cipher suites by default
>   * erlang:monitor on a primitive node (erl_interface, jinterface, etc)
> will no longer fail with badarg exception. Instead a monitor will be
> created, but it will only supervise the connection to the node.
> 
>   Highlights
> 
>   Erts:
> 
>      * Enhanced IO scalability
>      * Support for usage of distribution controller processes for
>        alternative transports, routing etc
>      * compact instructions on 64bit systems for code below 4GB 20% less
>        memory for loaded code
>      * Rewrite of the efile-driver with NIFs and "Dirty schedulers"
>        resulting in faster file operations
>      * non-smp VM removed
>      * link and monitor optimized for scalability
>      * os:getenv/putenv now work on thread-safe emulation. No longer in
>        sync with libc getenv(3). Manual synchronization will be needed.
> 
> Compiler:
>      * Misc compiler optimizations including contributions from the
>        Elixir team resulting in 10% improvements in benchmarks
>      * "Tuple calls" have been removed from the run-time system.
>      * Code such as f({ok, Val}) -> {ok, Val} is now automatically
>        rewritten to f({ok, Val} = Tuple) -> Tuple. this reduces code
>        size, execution time, and removed GC pressure.
>      * More information in stacktrace from a number of operators
>      * erlang:get_stacktrace/0 deprecated to be replaced with try ...
>        catch C:R:Stacktrace -> ...
>      * Creation of small maps with literal keys optimized.
> 
> Security:
>      * DTLS support in SSL
>      * Enhanced support for distribution over TLS
>      * "unsecure" ciphers removed from defaults in SSL and SSH.
>      * A new option value defined to facilitate implementing exec
>        servers. Old option kept for compatibility, but now gives errors
>        on stderror.
> 
> Standard libraries:
>      * New API for logging, logger
>      * New uri_string module for parsing URIs according to "The
>        standard"
>      * New function lists:search(list,fun/1) -> {ok, Value} | false
>      * Changed default behaviour of .erlang loading. escript, erlc,
>        dialyzer and typer no longer load an .erlang at all.
> 
> For more details see
> http://erlang.org/download/otp_src_21.0-rc1.readme
> 
> Pre built versions for Windows can be fetched here:
> http://erlang.org/download/otp_win32_21.0-rc1.exe
> http://erlang.org/download/otp_win64_21.0-rc1.exe
> 
> Online documentation can be browsed here:
> http://erlang.org/documentation/doc-10.0-rc1/doc/
> 
> The Erlang/OTP source can also be found at GitHub on the official
> Erlang repository,
> https://github.com/erlang/otp with tag OTP-21.0-rc1
> 
> 
> Thank you for all your contributions!
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-- 
Loïc Hoguin
https://ninenines.eu