Fix #559: Rack 1.6.0 properly parses requests larger than 128KB.

CHANGELOG.md

@@ -2,6 +2,7 @@ Next Release
 ============
 
 * [#871](https://github.com/intridea/grape/pull/871): Fixed Grape::Middleware::Base#response - [@galathius](https://github.com/galathius).
+* [#559](https://github.com/intridea/grape/issues/559): Support Rack 1.6.0 to parse requests larger than 128KB - [@myitcv](https://github.com/myitcv).
 * Your contribution here.
 
 0.10.1 (12/28/2014)

UPGRADING.md

@@ -1,6 +1,16 @@
 Upgrading Grape
 ===============
 
+### Upgrading to >= 0.10.2
+
+Grape now supports, but doesn't require Rack 1.6.0. If you encounter an issue with parsing requests larger than 128KB, explictly require Rack 1.6.0 in your Gemfile.
+
+```ruby
+gem 'rack', '~> 1.6.0'
+```
+
+See [#559](https://github.com/intridea/grape/issues/559) for more information.
+
 ### Upgrading to >= 0.10.1
 
 #### Changes to `declared(params, include_missing: false)`

spec/grape/integration/rack_spec.rb

@@ -0,0 +1,26 @@
+require 'spec_helper'
+
+describe Rack do
+  it 'correctly populates params from a Tempfile' do
+    input = Tempfile.new 'rubbish'
+    begin
+      app = Class.new(Grape::API) do
+        format :json
+        post do
+          { params_keys: params.keys }
+        end
+      end
+      input.write({ test: '123' * 10_000 }.to_json)
+      input.rewind
+      options = {
+        input: input,
+        method: 'POST',
+        'CONTENT_TYPE' => 'application/json'
+      }
+      env = Rack::MockRequest.env_for('/', options)
+      expect(JSON.parse(app.call(env)[2].body.first)['params_keys']).to match_array(%w(route_info test))
+    ensure
+      input.unlink
+    end
+  end
+end