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https://github.com/dex4er/starlight

Starlight - a light and pure-Perl PSGI/Plack HTTP server with pre-forks
https://github.com/dex4er/starlight

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Starlight - a light and pure-Perl PSGI/Plack HTTP server with pre-forks

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README 

        
NAME



    starlight - Light and pure-Perl PSGI/Plack HTTP server with pre-forks



SYNOPSIS



        $ starlight --max-workers=20 --max-reqs-per-child=100 app.psgi

    

        $ starlight --port=80 --ipv6=1 app.psgi

    

        $ starlight --port=443 --ssl=1 --ssl-key-file=file.key

                    --ssl-cert-file=file.crt app.psgi

    

        $ starlight --socket=/tmp/starlight.sock app.psgi



DESCRIPTION



    Starlight is a standalone HTTP/1.1 server with keep-alive support. It

    uses pre-forking. It is a pure-Perl implementation that doesn't require

    any XS package.



    Starlight was started as a fork of Thrall server which is a fork of

    Starlet server. It has almost the same code as Thrall and Starlet and

    it was adapted to not use any other modules than Plack.



    Starlight is created for Unix-like systems but it should also work on

    Windows with some limitations.



SEE ALSO



    Starlight, Thrall, Starlet, Starman



LIMITATIONS



    Perl on Windows systems (MSWin32 and cygwin) emulates "fork" in

    perlfunc and "waitpid" in perlfunc functions and uses threads

    internally. See perlfork (MSWin32) and perlcygwin (cygwin) for details

    and limitations.



    It might be a better option to use on this system the server with

    explicit threads implementation, i.e. Thrall.



    For Cygwin the perl-libwin32 package is highly recommended, because of

    Win32::Process module which helps to terminate stalled worker

    processes.



BUGS



 Windows



    There is a problem with Perl threads implementation which occurs on

    Windows systems (MSWin32). Cygwin version seems to be correct.



    Some requests can fail with the message:



      failed to set socket to nonblocking mode:An operation was attempted

      on something that is not a socket.



    or



      Bad file descriptor at (eval 24) line 4.



    This problem was introduced in Perl 5.16 and fixed in Perl 5.19.5.



    See https://rt.perl.org/rt3/Public/Bug/Display.html?id=119003 and

    https://github.com/dex4er/Thrall/issues/5 for more information about

    this issue.



    The server fails when a worker process calls "exit" in perlfunc

    function:



      Attempt to free unreferenced scalar: SV 0x293a76c, Perl interpreter:

      0x22dcc0c at lib/Plack/Handler/Starlight.pm line 140.



    It means that Harakiri mode can't work and the server has to be started

    with --max-reqs-per-child=inf option.



    See https://rt.perl.org/Public/Bug/Display.html?id=40565 and

    https://github.com/dex4er/Starlight/issues/1 for more information about

    this issue.



 MacOS



    MacOS High Sierra and newer shows error:



      objc[12345]: +[__NSCFConstantString initialize] may have been in

      progress in another thread when fork() was called. objc[12345]:

      +[__NSCFConstantString initialize] may have been in progress in

      another thread when fork() was called. We cannot safely call it or

      ignore it in the fork() child process. Crashing instead. Set a

      breakpoint on objc_initializeAfterForkError to debug.



    This error is caused by an added security to restrict multithreading.



    To override the limitation, run export

    OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES before using this server.



 Reporting



    If you find the bug or want to implement new features, please report it

    at https://github.com/dex4er/Starlight/issues



    The code repository is available at http://github.com/dex4er/Starlight



AUTHORS



    Piotr Roszatycki 



    Based on Thrall by:



    Piotr Roszatycki 



    Based on Starlet by:



    Kazuho Oku



    miyagawa



    kazeburo



    Some code based on Plack:



    Tatsuhiko Miyagawa



    Some code based on Net::Server::Daemonize:



    Jeremy Howard 



    Paul Seamons 



LICENSE



    Copyright (c) 2013-2016, 2020, 2023 Piotr Roszatycki .



    This is free software; you can redistribute it and/or modify it under

    the same terms as perl itself.



    See http://dev.perl.org/licenses/artistic.html