This library was originally created by Google. It supports the OpenRTB 2.x specification, providing bindings for all protobuf-supported languages, and additional support for Java such as JSON serialization and validation.

See the wiki to get started! Use the Github issue tracker for bugs, RFEs or any support. Check the changelog for detailed release notes.

You need: JDK 8, Maven 3.2, Protocol buffers (protoc) 3.5.1. Building is supported from the command line with Maven and from any IDE that can load Maven projects.

On Eclipse, the latest m2e is recommended but it can't run the code generation step, so you need to run a "mvn install" from the command line after checkout or after any mvn clean.

• Update to make all fields 'optional'. Missing data is an error handled by business logic, not by the parser. Senders must make sure they populate the fields expected by receivers. Receivers must defend against OpenRTB 'required' fields being unset.

• Update to the proto-to-JSON conversion for a few fields that are integer in the OpenRTB spec that were being sent as booleans in JSON, and now are sent as integers.

• Update the index for $.user.consent and $.content.data to match Google's choices, as we iterate towards a single specification. Note this is a breaking change from previous versions.