Connecting indicates the ClientConn is connecting.

Idle indicates the ClientConn is idle.

Ready indicates the ClientConn is ready for work.

ServingModeNotServing indicates that the server is not accepting new connections.

ServingModeServing indicates that the server contains all required configuration and is serving RPCs.

ServingModeStarting indicates that the server is starting up.

Shutdown indicates the ClientConn has started shutting down.

TransientFailure indicates the ClientConn has seen a failure but expects to recover.

ServingMode indicates the current mode of operation of the server.

State indicates the state of connectivity.