It appears the implementation of Happy Eyeballs in 1.22.0 is the origin of
some pretty serious performance regressions that remain even in the latest
Hackney 3.0 branch.
Connection tests:
=== 1.22.0 ===
First call: 9434ms
Second call: 14ms
=== 1.21.0 ===
First call: 228ms
Second call: 16ms
We went back further to 1.20.1 though because of reported problems with the mail
client and ssl_options. That bug was not reproduced by a dev, though, but we'll
trust it for now.
warning: Credo.CLI.Command.Info.Output.Default.print_after_info/4 is undefined or private. Did you mean:
* print/2
│
4 │ use Credo.CLI.Output.FormatDelegator,
│ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
│
└─ lib/credo/cli/command/info/info_output.ex:4: Credo.CLI.Command.Info.InfoOutput.print_after_info/4
This release includes the fix which should prevent the scenario where Postgrex crashes can cause Oban to get into a state where it will stop processing jobs.
Mastodon uses the Sec-Websocket-Protocol header to send the auth token. It is not clear if this is a violation of the RFC, but Mastodon is not the first application in the wild to use this header for authentication purposes. Phoenix does not allow accessing this header, so we work around it temporarily with a minor patch to Phoenix 1.7.14. We will reach out to Phoenix to discuss how to make this use case possible.
This is for streaming media to ffmpeg thumbnailer. The existing implementation relies on undocumented behavior.
Erlang open_port/2 does not officially support passing a string of a file path for opening. The specs clearly state you are to provide one of the following for open_port/2:
{spawn, Command :: string() | binary()} |
{spawn_driver, Command :: string() | binary()} |
{spawn_executable, FileName :: file:name_all()} |
{fd, In :: integer() >= 0, Out :: integer() >= 0}
Our method technically works but is strongly discouraged as it can block the scheduler and dialyzer throws errors as it recognizes we're breaking the contract and some of the functions we wrote may never return.
This is indirectly covered by the Erlang FAQ section "9.12 Why can't I open devices (e.g. a serial port) like normal files?"
https://www.erlang.org/faq/problems#idm1127
