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The Common Alerting Protocol (CAP) is a simple, flexible data interchange format for collecting and distributing “all-hazard” safety notifications and emergency warnings over information networks and public alerting systems. It is maintained by OASIS.
RCAP is an implementation of the CAP document protocol in Ruby. It allows for the creation of RCAP messages from Ruby applications and the parsing of external messages.
RCAP currently supports CAP 1.0, 1.1 and 1.2.