MSGPORT

Darwinia Msgport is built upon a flexible and modular architecture, allowing users to harness various cross-chain messaging layers that best suit their specific needs. Msgport provides support for sending arbitrary messages through different low-level cross-chain messaging services.

Example receiver dApp

For an example receiver dApp, please refer to the ExampleReceiverDapp file.

Sending message

1. Obtain the message port addres.

   a. From the address list part: Supported chains

   or

   b. Through portRegistry contract: portRegistry.get(uint256 chainId, bytes4 code)

2. Retrieve the fee and adapter params from the Msgport API

3. Send the message using the following parameters

   • toChainId: uint256 - Use the standard EVM chainId. Supported chains

   • toDapp: address - The address of your receiver dApp.

   • message: bytes - The payload of your message.

   • params: bytes - Adapter params obtained from the Msgport API in step 2.

   messagePort.send(toChainId, toDapp, message, params);

4. You can verify the senderPort and senderDapp addresses when reciving the message.

   For an example, please check Verify example

Develop

Foundry

To install dependencies and compile contracts:

git clone --recurse-submodules https://github.com/darwinia-network/darwinia-msgport.git && cd darwinia-msgport
make tools
make

Security and Liability

All contracts are WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.