node.js - 使用适用于 iOS 应用的 Firebase、Node.js 和 Google Cloud Messaging 推送通知

Question

我正在尝试使用 Firebase、Node.js 和 Google Cloud Messaging 发送 iOS 应用的推送通知。下面是 Node.js 代码

var Firebase = require('firebase'),
    gcm = require('node-gcm')
    ;
var pushRef = new Firebase("https://<myapp>.firebaseio.com/ios/queue/tasks");

pushRef.on("child_added", function(snapshot) {

    console.log("child added event registers");

    var notificationData = snapshot.val();
    sendNotification(notificationData);
    snapshot.ref().remove();

});

function sendNotification(notificationData) {

    var message = new gcm.Message({
      notification: {
        title: "Title",
        body: notificationData.message
      }
    });

    var sender = new gcm.Sender(<my Google Server Key>);
    var registrationTokens = [notificationData.recipientId];

    console.log("about to send message");
    console.log("this is the registration token: " + registrationTokens);

    sender.send(message, { registrationTokens: registrationTokens }, 10, function (err, response) {
      if(err) {
        console.error(err);
      } else {
        console.log(response);
      }
    });
}

没有错误，并且所有 console.log 语句均已注册。但是，我的设备上从未收到推送通知。这是console.log(响应):

{ multicast_id: 7398179070839209000,
  success: 1,
  failure: 0,
  canonical_ids: 0,
  results: [ { message_id: '0:1457564370785913%939a5f18939a5f18' } ] }

可能会发生什么情况？看起来事情应该可以正常工作，但事实并非如此

Answer 1

默认情况下，消息以标准优先级发送，根据 Google Cloud Messaging docs :

This is the default priority for message delivery. Normal priority messages won't open network connections on a sleeping device, and their delivery may be delayed to conserve battery. For less time-sensitive messages, such as notifications of new email or other data to sync, choose normal delivery priority.

不知怎的，这个正常的优先级似乎affect iOS more than Android apps .

要立即传递消息，您需要在消息中添加priority: 'high':

var message = new gcm.Message({
  priority : "high",
  notification: {
    title: "Title",
    body: notificationData.message
  }
});