How to Dump an Http Request from Within Sinatra

How to dump an HTTP request from within Sinatra?

I run thin with the -D and -V flags when I want to debug 'things':

$ thin start -p 3000 -R config.ru -D -V

-D, --debug                      Set debbuging on
-V, --trace                      Set tracing on (log raw request/response)

If you are trying to get the raw output from a request, use the request method like:

  # app running on http://example.com/example
  get '/foo' do
    request.body              # request body sent by the client (see below)
    request.scheme            # "http"
    request.script_name       # "/example"
    request.path_info         # "/foo"
    request.port              # 80
    request.request_method    # "GET"
    request.query_string      # ""
    request.content_length    # length of request.body
    request.media_type        # media type of request.body
    request.host              # "example.com"
    request.get?              # true (similar methods for other verbs)
    request.form_data?        # false
    request["SOME_HEADER"]    # value of SOME_HEADER header
    request.referer           # the referer of the client or '/'
    request.user_agent        # user agent (used by :agent condition)
    request.cookies           # hash of browser cookies
    request.xhr?              # is this an ajax request?
    request.url               # "http://example.com/example/foo"
    request.path              # "/example/foo"
    request.ip                # client IP address
    request.secure?           # false
    request.env               # raw env hash handed in by Rack
  end

See "GETTING STARTED" for more information.

How to parse JSON request body in Sinatra just once and expose it to all routes?

Use a sinatra before handler:

before do
  request.body.rewind
  @request_payload = JSON.parse request.body.read
end

this will expose it to the current request handler. If you want it exposed to all handlers, put it in a superclass and extend that class in your handlers.

How to dump sinatra rack test exceptions to console?

This is combination of options that must be used and then it works.

set :raise_errors, true
set :dump_errors, false
set :show_exceptions, false

Sinatra doesn't know this ditty?

This is because swap is a POST endpoint. When you pull up a URL in your browser you are doing an HTTP GET.

If you want to see that the sinatra service is running and you can at least talk to it you could try hitting it with curl from the command line with the right POST parameters.

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