* Create a DevToolsClient for a given URL object having various query parameters:
 *
 * host:
 *    {String} The hostname or IP address to connect to.
 * port:
 *    {Number} The TCP port to connect to, to use with `host` argument.
 * remoteId:
 *    {String} Remote client id, for runtimes from the remote-client-manager
 * ws:
 *    {Boolean} If true, connect via websocket instead of regular TCP connection.
 *
 * @param {URL} url
 *        The url to fetch query params from.
 * @return a promise that resolves a DevToolsClient object
 */
async function clientFromURL(url) {
  const params = url.searchParams;

  // If a remote id was provided we should already have a connected client available.
  const remoteId = params.get("remoteId");
  if (remoteId) {
    const client = remoteClientManager.getClientByRemoteId(remoteId);
    if (!client) {
      throw new Error(`Could not find client with remote id: ${remoteId}`);
    }
    return client;
  }

  const host = params.get("host");
  const port = params.get("port");
  const webSocket = !!params.get("ws");

  let transport;
  if (port) {
    transport = await DevToolsClient.socketConnect({ host, port, webSocket });
  } else {
    // Setup a server if we don't have one already running
    DevToolsServer.init();
    DevToolsServer.registerAllActors();
    transport = DevToolsServer.connectPipe();
  }
  return new DevToolsClient(transport);
}
PK