The corosync project is a project to implement a production quality "Revised BSD" licensed implementation of all core functionalities required by openais. The project implements cutting edge research on virtual synchrony to provide 100% correct operation in the face of failures or partitionable networks with excellent performance characteristics. . The Application Interface Specification is a software API and policies which are used to develop applications that maintain service during faults. . This package contains header files required to build clients for the corosync infrastructure.