Cucumber Wire Protocol

Cucumber used to have a wire protocol where tests could be run against daemons written in other languages. It works basically like a JSON-RPC connection.

These methods existed:

• begin_scenario: a test scenario is about to begin
• end_scenario: a test scenario has ended
• step_matches: ask if this endpoint can respond to a given string; if it can then return the arguments required and the method ID
• invoke: execute a method by ID and argument bundle
• snippet_text: some kind of error message; lets the server suggest a code stub to implement support for an unmatched step