I currently have:
$ rails s
=> Booting WEBrick
=> Rails 3.0.9 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=
I see you've tried unicorn: have you tried running it through bundler? Add:
gem :unicorn
to your Gemfile
and run:
bundle exec unicorn_rails
to start the server and browse to http://localhost:8080.
In Ruby 1.9.3. source, it says that MAX_URI_LENGTH = 2083. That means that the latest version of Webrick can't handle urls longer that this. And that's what the WEBrick::HTTPStatus::RequestURITooLarge exception is telling you.
The solution therefore is to use a different web server. One of the most favourite ones is Thin:
sudo gem install thin
cd to/your/rails/app
thin -h
thin -a localhost start
Like said here, you could change the MAX_URI_LENGTH
using this code:
WEBrick::HTTPRequest.const_set("MAX_URI_LENGTH", 10240)