NewContext creates an rpc Context with the supplied values.

NewServer is a thin wrapper around grpc.NewServer that registers a heartbeat service.

ErrNotConnected is returned by ConnHealth when there is no connection to the host (e.g.

ErrNotHeartbeated is returned by ConnHealth when we have not yet performed the first heartbeat.

SourceAddr provides a way to specify a source/local address for outgoing connections.

Context contains the fields required by the rpc framework.

A HeartbeatService exposes a method to echo its request params.

A PingRequest specifies the string to echo in response.

A PingResponse contains the echoed ping request string.

RemoteClockMetrics is the collection of metrics for the clock monitor.

RemoteClockMonitor keeps track of the most recent measurements of remote offsets and round-trip latency from this node to connected nodes.

RemoteOffset keeps track of this client's estimate of its offset from a remote server.