Firebase云消息传递和C#服务器端代码

我在我的Android和iOS应用程序中使用FCM.客户端代码工作正常,因为从Firebase控制台我可以向两个平台发送通知而不会出现任何问题.使用我的C#代码,我可以成功向Android设备发送通知,但除非直接来自Firebase通知控制台,否则通知永远不会出现在iPhone上.我不知道是什么给了.

C#服务器端代码

try
{
    var applicationID = "application_id";
    var senderId = "sender_id";
    string deviceId = "device_id_of_reciever";
    WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
    tRequest.Method = "post";
    tRequest.ContentType = "application/json";
    var data = new
    {
        to = deviceId,
        notification = new
        {
            body = "This is the message",
            title = "This is the title",
            icon = "myicon"
        }
    };

    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();
                Response.Write(sResponseFromServer);
            }
        }
    }
}
catch (Exception ex)
{
    Response.Write(ex.Message);
}

使用我的服务器端代码通知iPhone不起作用,但我从Firebase得到了很好的回复.

    {
    "multicast_id": 479608 XXXXXX529964,
    "success": 1,
    "failure": 0,
    "canonical_ids": 0,
    "results": [{
        "message_id": "0:1467935842135743%a13567c6a13567c6"
    }]
}

任何帮助或建议将非常感激.

解决方法:

尝试在FCM请求中将优先级字段设置为“高”.

例如：

var data = new
{
    to = deviceId,
    notification = new
    {
        body = "This is the message",
        title = "This is the title",
        icon = "myicon"
    },
    priority = "high"
};

请注意,虽然在开发中使用高优先级很好,但在生产中它应该仅在用户需要采取行动时使用,例如回复聊天消息.