solana rpc.ts

import http from 'http';
import httpProxy from 'http-proxy';

const items = Object.values({
  'jup.ag': 'https://jupiter-frontend.rpcpool.com',
  'pump.fun':
    'https://pump-fe.helius-rpc.com/?api-key=1b8db865-a5a1-4535-9aec-01061440523b',
  'raydium.io': 'https://raydium-raydium-5ad5.mainnet.rpcpool.com',
});
let currentInd = 0;
const nextItem = () => {
  if (currentInd >= items.length) {
    currentInd = 0;
  }
  return items[currentInd++];
};

const proxy = httpProxy.createProxyServer({});

const proxyServer = http.createServer(function (req, res) {
  const [origin, target] = nextItem();
  req.headers['origin'] = `https://${origin}`;
  proxy.web(req, res, {
    secure: false,
    target,
    xfwd: true,
    ws: true,
    changeOrigin: true,
  });
});

proxyServer.listen(8000, () => {
  console.log('server started at 8000');
});