Function freePort

scripts/bench/agent-control-benchmark.mjs:1335–1344

()

}

function freePort() {
  return new Promise((resolve, reject) => {
    const server = net.createServer();
    server.on("error", reject);
    server.listen(0, "127.0.0.1", () => {
      const address = server.address();
      server.close(() => resolve(address.port));
    });
  });
}