Callback early exit

[technoweenie]

This does two things. First: it allows before callbacks to skip any remaining callbacks, AND the connection by returning a Hurley::Response object. Second: callbacks can optionally receive the Hurley connection as the second argument. This test shows it in action:

c = Client.new "https://example.com"

c.before_call do |req|
  req.body = req.url.path
end

c.before_call do |req, connection|
  # block is optional
  req.response(200) do |res|
    res.header["Hello"] = "World"
    res.body = "ok"
  end
end

EDIT: Added a Hurley::Request#response helper so you don't have to worry about calling Hurley::Request#prepare!.

The after callbacks are still called with that returned Hurley::Response.