Question

我正在尝试使用FCM向Android手机发送一些通知。使用localhost和fiddler进行调试时，一切似乎都能正常工作。但是，当我尝试将我的Web服务部署到IIS，并用我的IP address/project directory/controller/action替换localhost时，一切都开始分崩离析。

我的Webservice调用的方法：

public bool sendToFCMAndroid(string deviceToken, string message, string title, string type, string notificationId, string postingId)
{
    List<dynamic> errorList = new List<dynamic>();            
    var data = new
    {
        to = deviceToken,
        notification = new
        {
            body = message,
            title = title
        },
        data = new
        {
            type = type,
            notificationId = notificationId,
            postingId = postingId
        },
        priority = "high"
    };
    try
    {
        HttpWebRequest tRequest = (HttpWebRequest)WebRequest.Create(new Uri(ConfigurationManager.AppSettings["urlFCM"]));
        tRequest.Accept = "application/json";
        tRequest.ContentType = "application/json";
        tRequest.Method = "POST";

        var json = JsonConvert.SerializeObject(data);
        Byte[] byteArray = new ASCIIEncoding().GetBytes(json);

        tRequest.Headers.Add(string.Format("Authorization: key={0}", ConfigurationManager.AppSettings["androidFCMLegacyKey"]));
        tRequest.Headers.Add(string.Format("Sender: id={0}", ConfigurationManager.AppSettings["androidFCMSenderId"]));
        tRequest.ContentLength = byteArray.Length;

        Stream newStream = tRequest.GetRequestStream();
        newStream.Write(byteArray, 0, byteArray.Length);

        WebResponse response = tRequest.GetResponse();              
       // Console.WriteLine(((HttpWebResponse)response).StatusDescription);              
        newStream = response.GetResponseStream();                
        StreamReader sr = new StreamReader(newStream);
        FCMResponse jsonResp = JsonConvert.DeserializeObject<FCMResponse>(sr.ReadToEnd());                                         
        if (jsonResp.failure >= 1) errorList.Add(sr.ReadToEnd()); //check if got failures in json resp              

        //close everything use.
        sr.Close();
        response.Close();
        newStream.Close();               
    }
    catch (Exception ex)
    {
        errorList.Add((ex.Message));
    }
    return (errorList.Count() == 0) ? true : false;
}

每当我通过ip / project-folder调用Webservice时，似乎总是返回false，所以我怀疑是发生了异常，或者FCM让我失败了。

编辑：我发现了一个潜在客户，在返回错误消息后，它显示The operation has timed out。所以我的预感是在运行时触发了异常。现在的问题是，当我尝试在运行时发送到FCM而不是调试时间时，为什么它会超时？

EDIT2：我尝试将整个异常类作为JSON返回，这是我得到的两种不同类型的结果

Timeout exception
Cannot connect to remote server exception

这两个似乎发生在这条特定的线上，很奇怪。

Line 206: Stream newStream = tRequest.GetRequestStream();
Line 207: newStream.Write(byteArray, 0, byteArray.Length);

C＃ - 向FCM Firebase发送通知失败

0 个答案: