Question

我的服务正在向azzure通知中心注册。并使用我的.net服务器API将通知推送到特定时间范围内的特定设备。一切正常，只是当我尝试发送相同代码的多个推送时，除了第一个以外，它都卡在“ BadRequest”中。

下面是代码

public static async void SendAzzurePushNotification()
{
    for (int i = 0; i < 10; i++)
    {
        HttpStatusCode pushNotificationStatus = await CreateAndPushAsync("user_37");
        Console.WriteLine(pushNotificationStatus);
    }
}

static async Task<HttpStatusCode> CreateAndPushAsync(string tag)
{
    HttpStatusCode pushNotificationStatus = HttpStatusCode.NotImplemented;
    try
    {
        HttpResponseMessage response = null;

        string uri = "<HUBURI>";

        client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("SharedAccessSignature", <SASTOKEN>);
        client.DefaultRequestHeaders.Add("ServiceBusNotification-Format", "gcm");
        client.DefaultRequestHeaders.Add("ServiceBusNotification-Tags", tag);
        client.DefaultRequestHeaders.Add("x-ms-version", "2015-01");

        response = await client.PostAsync(uri,
                new StringContent("{\"data\":{\"message\":\"Notification Hub test notification\"}}", Encoding.UTF8, "application/json"));

        pushNotificationStatus = response.StatusCode;
    }
    catch (Exception ex)
    {
        throw;
    }

    return pushNotificationStatus;
}

上面的代码第一次给我创建状态，然后是BadRequest。如果使用相同的api，我会从邮递员等客户那里调用。很好。

我还尝试了来自azure通知中心的nuget软件包，有关以下代码。这样可以解决上述问题，但不会返回任何状态代码，我可以在上面的代码中获得成功的状态代码。

NotificationHubClient hub = NotificationHubClient.CreateClientFromConnectionString("<CONNECTIONSTRING>", "<HUB>");
NotificationOutcome outcome = await hub.SendGcmNativeNotificationAsync("{\"data\":{\"message\":\"Notification Hub test notification\"}}", "user_37");

Answer 1

用您的send和您的tags调用notification-data方法

private static readonly string Endpoint = @"Your End Point";
private static readonly string HubName = @"You Hub Name";
private static NotificationHubClient Hub { get { return NotificationHubClient.CreateClientFromConnectionString(Endpoint, HubName); } }

public static async Task Send(string[] tags, object data)
{
    try
   {

        string payload = string.Empty;
        string json_gcm = string.Empty;

        if (data.GetType() != typeof(string))
        {
            //If your notification data is of type
            payload = JsonConvert.SerializeObject(data);
            json_gcm = "{ \"data\" : " + payload + "}";
        }
        else
        {
            //If your notification data is simply is in string
            payload = Convert.ToString(data);
            json_gcm = "{ \"data\" : {\"message\":\"" + payload + "\"}}";
        }


        // Android
        NotificationOutcome gcmOutcome = null;
        gcmOutcome = await Hub.SendGcmNativeNotificationAsync(json_gcm, tags);

        if (gcmOutcome != null)
        {
            if (!((gcmOutcome.State == NotificationOutcomeState.Abandoned) || (gcmOutcome.State == NotificationOutcomeState.Unknown)))
            {
                //Do code when notification successfully send to Android
             }
        }
    }
    catch (Exception ex)
    {
        //Do code when any exception occurred while sending notification  


    } 
}

NotificationOutcomeState：：以枚举的形式提供状态代码，表示您的通知是否已成功发送。

您可以根据需要忽略if-else阻止。

尝试一次可能对您有帮助

持续推送消息，提供来自Azure的BadRequest

1 个答案: