This package makes it easy to provide an aggregator by proxying another. The primary use-case is to expose a free aggregator based on one that requires payment by augmenting the bundles with transactions that pay tx.origin.

Setup

npm install bls-wallet-aggregator-proxy
yarn install bls-wallet-aggregator-proxy

Usage

import {
  runAggregatorProxy,

  // AggregatorProxyCallback,
  // ^ Alternatively, for manual control, import AggregatorProxyCallback to
  // just generate the req,res callback for use with http.createServer
} from "bls-wallet-aggregator-proxy";

runAggregatorProxy(
  "https://arbitrum-goerli.blswallet.org",
  async (bundle) => {
    console.log("proxying bundle", JSON.stringify(bundle, null, 2));

    // Return a different/augmented bundle to send to the upstream aggregator
    return bundle;
  },
  8080,
  "0.0.0.0",
  () => {
    console.log("Proxying aggregator on port 8080");
  }
);

Instant wallet example without dapp-sponsored transaction

Instant wallet example with dapp-sponsored transaction

Example dApp using a proxy aggregator

https://github.com/JohnGuilding/single-pool-dex