Use SSL and Unicorn in production

Gemfile

@@ -1,4 +1,5 @@
 source 'https://rubygems.org'
+ruby  '2.1.1'
 
 gem 'rails',                '4.2.0.beta2'
 gem 'bcrypt',               '3.1.7'
@@ -29,4 +30,5 @@ end
 group :production do
   gem 'pg',             '0.17.1'
   gem 'rails_12factor', '0.0.2'
+  gem 'unicorn',        '4.8.3'
 end

Gemfile.lock

@@ -87,6 +87,7 @@ GEM
       railties (>= 4.2.0.beta, < 5.0)
       thor (>= 0.14, < 2.0)
     json (1.8.1)
+    kgio (2.9.2)
     listen (2.7.11)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
@@ -148,6 +149,7 @@ GEM
       activesupport (= 4.2.0.beta2)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
+    raindrops (0.13.0)
     rake (10.3.2)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
@@ -188,6 +190,10 @@ GEM
     uglifier (2.5.3)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
+    unicorn (4.8.3)
+      kgio (~> 2.6)
+      rack
+      raindrops (~> 0.7)
     web-console (2.0.0.beta3)
       activemodel (~> 4.0)
       binding_of_caller (= 0.7.3.pre1)
@@ -217,4 +223,5 @@ DEPENDENCIES
   sqlite3 (= 1.3.9)
   turbolinks (= 2.3.0)
   uglifier (= 2.5.3)
+  unicorn (= 4.8.3)
   web-console (= 2.0.0.beta3)

Procfile

@@ -0,0 +1 @@
+web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb

config/environments/production.rb

@@ -41,7 +41,7 @@
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
-  # config.force_ssl = true
+  config.force_ssl = true
 
   # Decrease the log volume.
   # config.log_level = :info

config/unicorn.rb

@@ -0,0 +1,22 @@
+worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
+timeout 15
+preload_app true
+
+before_fork do |server, worker|
+  Signal.trap 'TERM' do
+    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
+    Process.kill 'QUIT', Process.pid
+  end
+
+  defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!
+end
+
+after_fork do |server, worker|
+  Signal.trap 'TERM' do
+    msg  = 'Unicorn worker intercepting TERM and doing nothing. '
+    msg += 'Wait for master to send QUIT'
+    puts msg
+  end
+
+  defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
+end