node.js - 如何在 Node js 中使用 FCM 向多个 android 设备发送消息？

Question

我尝试将消息发送到单个设备，即发送到单个注册 ID，它工作正常，但当尝试添加多个注册 ID 时，它会出现“InvalidServerResponse”错误。 例如适用于 regTokens = 'regId1'; 但不适用于 regTokens = ['regId1','regId2'];

var FCM = require('fcm-node');
// Add API Key
var fcm = new FCM('<server-key>');

exports.sendMessage = function (regTokens, messageToSend, callback) {
  var message = { //this may vary according to the message type (single recipient, multicast, topic, et cetera)
      to: regTokens,

      data: { 
        ar_message: messageToSend
      }
  };

    fcm.send(message, function(err, response){
        if (err) {
            console.log("Something has gone wrong!",err);
        } else {
            console.log("Successfully sent with response: ", response);
        }
        callback(err, 'Success');
      });
}

Answer 1

更新:对于v1，似乎不再支持registration_ids。强烈建议改用主题。

---

发送到指定的多个注册 token 时，必须使用registration_ids而不是 to。来自文档(强调我的):

This parameter specifies the recipient of a multicast message, a message sent to more than one registration token.

The value should be an array of registration tokens to which to send the multicast message. The array must contain at least 1 and at most 1000 registration tokens. To send a message to a single device, use the to parameter.

Multicast messages are only allowed using the HTTP JSON format.

var message = {
    registration_ids: regTokens,

   data: { 
        ar_message: messageToSend
   }
  };