Question

I m trying to write a Sinatra app that will run on a shared Passenger server. For now, I d be happy just getting a "hello world", but something isn t working quite right. I have:

config.ru

require  vendor/sinatra-lib/sinatra.rb 
set :environment, :production
disable :run

require  myapp.rb 
run Sinatra::Application

myapp.rb

get  /  do
  "Hello world!"
end

and of course all the support libs I need for sinatra are under /vendor/sinatra-lib. I can rackup this exact load on my local machine, and it runs like a champ. However, on the remote machine, I get 0-byte responses for any URL I try to visit. Note that I have a /public directory, and I can view pages out of that successfully, so I guess Rack is still responding. Also, I can run a basic Rack app without any problems, so Rack must be configured correctly (at least, correctly for running Rack apps).

At this point, the only thing I can think of is to check the version of Rack, etc, on the remote server. I don t have full control over the box, so I don t really have log output to share. I can try to chase it down, if it s important, but I m hoping something will jump out at somebody.

Answer 1

Thank you all for playing, turned out to be a dependency issue -- the server I was deployed to was running a version of Rack that was too old to support Sinatra. Lots of good other stuff to think about, though.

Answer 2

I think the problem is that the other sinatra files isn t in the load dir. Try to rename vendor/sinatra-lib into vendor/sinatra, and if it still doesn t work, try to add this in the top of your config.ru, in stead of require vendor/...

$: <<  vendor/sinatra 
require  sinatra

A little side note: You are not required to pass the file extension (.rb) to require, so you could do require myapp instead of require myapp.rb .

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