diff options
| -rw-r--r-- | Documentation/yahns-rackup.pod | 10 | ||||
| -rw-r--r-- | examples/yahns_rack_basic.conf.rb | 6 | ||||
| -rw-r--r-- | extras/exec_cgi.rb | 8 |
3 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/yahns-rackup.pod b/Documentation/yahns-rackup.pod index efdfb6d..6172661 100644 --- a/Documentation/yahns-rackup.pod +++ b/Documentation/yahns-rackup.pod @@ -159,6 +159,16 @@ The RACK_ENV variable is set by the aforementioned -E switch. If RACK_ENV is already set, it will be used unless -E is used. See rackup documentation for more details. +=head1 CAVEATS + +yahns is strict about buggy, non-compliant Rack applications. +Some existing servers work fine without "Content-Length" or +"Transfer-Encoding: chunked" response headers enforced by Rack::Lint. +Forgetting these headers with yahns causes clients to stall as they +assume more data is coming. Loading the Rack::ContentLength and/or +Rack::Chunked middlewares will set the necessary response headers +and fix your app. + =head1 CONTACT All feedback welcome via plain-text mail to L<mailto:yahns-public@yhbt.net> diff --git a/examples/yahns_rack_basic.conf.rb b/examples/yahns_rack_basic.conf.rb index f3f8e6a..610a482 100644 --- a/examples/yahns_rack_basic.conf.rb +++ b/examples/yahns_rack_basic.conf.rb @@ -30,6 +30,12 @@ queue do worker_threads 50 end +# note: Rack requires responses set "Content-Length" or use +# "Transfer-Encoding: chunked". Some Rack servers tolerate +# the lack of these, yahns does not. Thus you should load +# Rack::Chunked and/or Rack::ContentLength middleware in your +# config.ru to ensure clients know when your application +# responses terminate. app(:rack, "config.ru", preload: false) do listen 80 diff --git a/extras/exec_cgi.rb b/extras/exec_cgi.rb index 3091cfb..6bb40c1 100644 --- a/extras/exec_cgi.rb +++ b/extras/exec_cgi.rb @@ -12,6 +12,14 @@ # (delfater: ensure that parent body is always closed) # Otherwise you will get zombies from HEAD requests which accept compressed # responses. +# +# Usage in config.ru using cgit as an example: +# +# use Rack::Chunked +# # other Rack middlewares can go here... +# +# run ExecCgi.new('/path/to/cgit.cgi') # cgit: https://git.zx2c4.com/cgit/ +# class ExecCgi class MyIO < Kgio::Pipe attr_writer :my_pid |