C#中的Firebase云消息传递

Question

我试图从C#中的服务器发送推送通知，我使用了正确的注册令牌和API密钥，但仍然得到以下响应。

{"multicast_id":7864311304033595507,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"InvalidRegistration"}]}

我按照这个网址来实现这个解决方案通过C#使用FCM（Firebase云消息传递）发送推送到Android

目前，我正在尝试向单个设备发送通知，但也希望同时向多个设备发送通知，我使用了url中给出的to:“/topics/all”，但它不起作用。如果我必须同时向多个设备发送通知，我该怎么办？

这是我的密码

try
      {

          string applicationID = "SERVER_KEY ";

          string senderId = "SENDER_ID";

          string deviceId = "ba92be2da78e7285";

          WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
          tRequest.Method = "post";
          tRequest.ContentType = "application/json";
          var data = new
          {
              //to = deviceId,
              to = deviceId,
              notification = new
              {
                  body = "Bring your existing apps and games to the Windows Store with the Desktop Bridge",
                  title = "Bridge",
                  sound = "Enabled"

              }
          };
          var serializer = new JavaScriptSerializer();
          var json = serializer.Serialize(data);
          Byte[] byteArray = Encoding.UTF8.GetBytes(json);
          tRequest.Headers.Add(string.Format("Authorization: key={0}", applicationID));
          tRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
          tRequest.ContentLength = byteArray.Length;
          using (Stream dataStream = tRequest.GetRequestStream())
          {
              dataStream.Write(byteArray, 0, byteArray.Length);
              using (WebResponse tResponse = tRequest.GetResponse())
              {
                  using (Stream dataStreamResponse = tResponse.GetResponseStream())
                  {
                      using (StreamReader tReader = new StreamReader(dataStreamResponse))
                      {
                          String sResponseFromServer = tReader.ReadToEnd();
                          string str = sResponseFromServer;
                      }
                  }
              }
          }
      }
      catch (Exception ex)
      {
          string str = ex.Message;
      }   

Answer 1

我的问题解决了。我使用的设备id与注册令牌id不同。因此我必须使用由FirebaseInstanceId.getInstance（）.getToken（）方法返回的注册令牌id。代码的其余部分和我发布的问题相同。