send-etx

send-etx

This example shows how to correctly estimate gas for and send an external transaction to any Quai chain.

Dependencies

• Node.js - JavaScript runtime
• quais - Quai JavaScript SDK
• quais-polling - polling provider for quais

Usage

To install dependencies, navigate to this directory (quais-by-example/send-etx) and run:

npm install

Create a local .env file from the template .env.example and fill in the values:

cp .env.example .env

Use nodejs to run the example script:

node index.js

Example Breakdown

The index.js script requires a few variables to be set before it can run properly:

• rpcURL - the RPC URL of the chain you want to send from, loaded from your .env file
• privateKey - the private key of the address you want to send from, loaded from your .env file
• desintationAddress - the address you want to send to

Once you've set each of these variables, you can run the script with:

node index.js

The script will take in these variables, compute the appropriate gas limit using getEtxGasMultiplier, and send the transaction. It will console out the origin chain transaction hash once the transaction has been mined on the origin chain. Note: this does not mean that the transaction has been mined on the destination chain, which will take some time depending on which shard the destination address is on.

The script is also designed to handle internal transactions, so if you provide 2 addresses on the same chain, the script will send an internal transaction instead of an external transaction.