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.

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

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

To install dependencies and compile contracts:

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

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