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Play Framework - The High Velocity Web Framework

The Play Framework combines productivity and performance making it easy to build scalable web applications with Java and Scala. Play is developer friendly with a "just hit refresh" workflow and built-in testing support. With Play, applications scale predictably due to a stateless and non-blocking architecture. By being RESTful by default, including assets compilers, JSON & WebSocket support, Play is a perfect fit for modern web & mobile applications.

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TLS differences

This branch differs from the main play branch in that it supports TLS client authentication as well as server authentication. The RequestHeader trait has a cert method that allows you to request a client certificate asynchronously - the client will be asked for his certificate if he has one.

   def certs(required:Boolean): Future[Seq[Certificate]]

Certificates that are signed by CAs in the trust store can be requested, or by specifying the empty trust store any client certificate will be requested. This is useful for implementing protocols such as WebID, as is done by RWW-Play

  run  -Dhttps.port=8443 -Dhttps.trustStore=noCA

This API is still prone to change, see:


For your convenience the most recent builds that pass the test suites are uploaded here.

Running the sample applications

There are several samples applications included in the samples/ directory. For example, to run the included Scala Hello World application:

$ cd ~/workspace/play2.1/samples/scala/helloworld/
$ play run

The application will be available on port 9000.

Issues tracker

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This software is licensed under the Apache 2 license, quoted below.

Copyright 2013 Typesafe (

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this project except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.