# Package org.apache.ignite.spi.discovery.tcp.messages

Contains implementation messages.

See: Description

Class Summary
TcpDiscoveryAbstractMessage: Base class to implement discovery messages.
TcpDiscoveryAbstractTraceableMessage: Abstract traceable message for TCP discovery.
TcpDiscoveryAuthFailedMessage: Message telling joining node that its authentication failed on coordinator.
TcpDiscoveryCheckFailedMessage: Message telling joining node that it failed coordinator's validation check.
TcpDiscoveryClientAckResponse
TcpDiscoveryClientMetricsUpdateMessage: Metrics update message.
TcpDiscoveryClientPingRequest: Ping request.
TcpDiscoveryClientPingResponse: Ping request.
TcpDiscoveryClientReconnectMessage: Message telling that client node is reconnecting to topology.
TcpDiscoveryConnectionCheckMessage: Message used to check whether a node is still connected to the topology.
TcpDiscoveryCustomEventMessage: Wrapped for custom message.
TcpDiscoveryDiscardMessage: Message sent by coordinator when some operation handling is over.
TcpDiscoveryDummyWakeupMessage
TcpDiscoveryDuplicateIdMessage: Message telling joining node that new topology already contain different node with same ID.
TcpDiscoveryHandshakeRequest: Handshake request.
TcpDiscoveryHandshakeResponse: Handshake response.
TcpDiscoveryJoinRequestMessage: Initial message sent by a node that wants to enter topology.
TcpDiscoveryLoopbackProblemMessage: Message telling joining node that it has loopback problem (misconfiguration).
TcpDiscoveryMetricsUpdateMessage: Metrics update message.
TcpDiscoveryMetricsUpdateMessage.MetricsSet
TcpDiscoveryNodeAddedMessage: Message telling nodes that new node should be added to topology.
TcpDiscoveryNodeAddFinishedMessage: Sent by coordinator across the ring to finish node add process.
TcpDiscoveryNodeFailedMessage: Sent by node that has detected node failure to coordinator across the ring, then sent by coordinator across the ring.
TcpDiscoveryNodeLeftMessage: Sent by node that is stopping to coordinator across the ring, then sent by coordinator across the ring.
TcpDiscoveryPingRequest: Ping request.
TcpDiscoveryPingResponse: Ping response.
TcpDiscoveryRingLatencyCheckMessage
TcpDiscoveryServerOnlyCustomEventMessage: Wrapped for custom message that must not be delivered to the client nodes.
TcpDiscoveryStatusCheckMessage: Message sent by node to its next to ensure that next node and connection to it are alive.

Annotation Types Summary
TcpDiscoveryEnsureDelivery: Message classes with this annotation attached are processed in a special way to ensure messages delivery.
TcpDiscoveryRedirectToClient: Message classes with this annotation attached will be redirected to client nodes when going through ring.

## Package org.apache.ignite.spi.discovery.tcp.messages Description

Contains implementation messages.

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Ignite Database and Caching Platform | : ver. 2.9.0
Release Date | : October 15 2020