Server handler (thin) not found.

[ghazel]

When I start this simple server, I get an error: Server handler (thin) not found. (RuntimeError)

require 'async-rack'
require 'sinatra'

set :server, 'thin'

get '/' do
  "Hello, world!"
end

If I comment out the require 'async-rack' line, it starts Thin fine. If I comment out the set :server, 'thin' and use async-rack, it starts WEBrick.

[aq1018]

I don't think sinatra can work out of the box with async-rack. Try https://github.com/ghazel/async_sinatra

[ghazel]

async_sinatra has the same issue.

require 'async-rack'
require 'sinatra/async'

class TestServer < Sinatra::Base
  register Sinatra::Async
  set :server, 'thin'

  aget '/' do
    body("Hello, world!")
  end
end

TestServer.run!