TaoChain Endpoint

The TaoChain Endpoint is an immutable smart contract that implements a standardized interface for Omnichain Applications (TApps) to manage security configurations and seamlessly send and receive messages.

Developers can see the latest chains LayerZero supports in Endpoint Addresses.

Sending Endpoint​

The Endpoint exposes an interface for the TApp contract to use to send messages. When a caller invokes _tcSend within an TApp's child contract:

1. TApp Config: the Endpoint enforces each TApp's unique messaging configuration specified by the TApp owner. The configured MessageLib controls how the Message Packet is generated and emitted.

2. Message Emission: Once the Packet has been constructed using the owner's configuration, the message is emitted via the PacketSent event.

Sending Endpoint Light

Receiving Endpoint​

The configured DVNs within the Security Stack listen for the packet and verify the PayloadHash in the destination MessageLib selected by the TApp:

Receiving Endpoint Light

Once the message has fulfilled the TApp's configured Security Stack, any caller (e.g., Executor) can commit the verified packet nonce to the destination Endpoint and execute the corresponding message via tcReceive for the receiving application.

The default configuration includes a default Executor to automatically handle this permissionless call for convenience.

Developers can easily identify a chain's Endpoint via a unique Endpoint ID used for message routing.