Add a -b/-bind option per issue scoutapp#36

Author: mzsanford

Vagrantfile

@@ -2,6 +2,6 @@
 Vagrant::Config.run do |config|
   config.vm.box = "Ubunutu64-ruby2"
   config.vm.box_url = "https://dl.dropboxusercontent.com/s/o5i10hcu57jamg8/ubuntu64-ruby2.box"
-  config.vm.share_folder "foo", "/projects", "/Users/itsderek23/projects/"
+  # config.vm.share_folder "foo", "/projects", "/Users/itsderek23/projects/"
   config.vm.forward_port 5555,5555
-end
+end

bin/scout_realtime

@@ -56,6 +56,7 @@ Advanced options:
   EOS
 
   opt :port, "point your web browser to this port to view realtime metrics.", :default => 5555, :short => "-p"
+  opt :bind, "bind to this IP address on the host", :default => '0.0.0.0', :short => '-b'
   opt :foreground, "run in the foreground, i.e., don't daemonize the process. Useful for debugging.", :default => false, :short => "-f"
   opt :log_path, "full path for a log file", :default=>log_path
   opt :pid_path, "full path for a PID file", :default=>pid_path
@@ -81,7 +82,7 @@ EOS
 # TODO: should be able to pass :daemonize => !opts[:foreground] to Dante::Runner instead
 if opts[:foreground]
   puts " ** Initializing. cntl-c to stop. Logging to STDOUT **"
-  Scout::Realtime::Main.instance(:port=>opts[:port]).go_sinatra
+  Scout::Realtime::Main.instance(:port=>opts[:port],:bind=>opts[:bind]).go_sinatra
   puts startup_message
 else
   if command == :start
@@ -91,7 +92,7 @@ else
     end
 
     Dante::Runner.new('scout_realtime').execute(:daemonize => !opts[:foreground], :pid_path => pid_path, :log_path => log_path, :port=>opts[:port]) do |options|
-      Scout::Realtime::Main.instance(:port=>options[:port]).go_sinatra
+      Scout::Realtime::Main.instance(:port=>options[:port],:bind=>opts[:bind]).go_sinatra
     end
     puts startup_message
     puts  '* "scout_realtime stop" to stop the daemon'

lib/scout_realtime/main.rb

@@ -7,9 +7,10 @@ class Main
 
       attr_accessor :running, :runner, :stats_thread
 
-      # opts: {:port=>xxx}
+      # opts: {:port=>xxx, bind=>'0.0.0.0'}
       def initialize(opts={})
         @port=opts[:port]
+        @bind_address=opts[:bind] || '0.0.0.0'
         Scout::Realtime::logger=Logger.new(STDOUT)
         @stats_thread = Thread.new {}
         @runner = Scout::Realtime::Runner.new
@@ -50,12 +51,12 @@ def go_sinatra
         #end
 
         start_thread
-        Scout::Realtime::WebApp.run!(:port=>@port)
+        Scout::Realtime::WebApp.run!(:port=>@port,:bind=>@bind_address)
       end
 
       def go_webrick
         logger.info("starting web server ")
-        server = WEBrick::HTTPServer.new(:Port => 5555, :AccessLog => [])
+        server = WEBrick::HTTPServer.new(:Port => @port, :AccessLog => [], :BindAddress => @bind_address)
         server.mount '/', Scout::Realtime::WebServer
         trap 'INT' do
           server.shutdown

lib/scout_realtime/web_app.rb

@@ -11,7 +11,7 @@ class Scout::Realtime::WebApp < Sinatra::Base
   set :static, true # set up static file routing
   set :public_dir, File.expand_path('../web', __FILE__) # set up the static dir (with images/js/css inside)
   set :views, File.expand_path('../web/views', __FILE__) # set up the views dir
-  set :bind, "0.0.0.0" # necessary for running on vagrant
+  set :bind, self.bind || "0.0.0.0" # 0.0.0.0 is the default and is required for Vagrant
   #set :traps, false # setting this to false means 1) sinatra won't capture any interrupts or term signals; 2) we need to call Scout::Realtime::WebApp.quit! ourselves in our own signal trap
 
   #helpers Sinatra::ContentFor