react-native-signalr/src/ajax.js

Connect to a SignalR server from react-native

export default (options) => {
  const request = new XMLHttpRequest();
  request.onreadystatechange = () => {
    if (request.readyState !== 4) {
      return;
    }

    if (request.status === 200 && !request._hasError && options.success) {
      options.success(JSON.parse(request.responseText));
    } else if (options.error) {
       options.error(request, request._response);
    }
  };

  request.open(options.type, options.url);
  request.setRequestHeader('content-type', options.contentType);

  request.send(options.data.data && `data=${options.data.data}`);

  return {
    abort: (reason) => {
      return request.abort(reason);
    }
  };
}