我是azure的新手,我已经配置了我的应用程序以接收原始通知,并且我能够从azure网站的调试页面接收它们,我的问题是,我怎么能从我的后端发送它们?我能够发送所有类型的通知,但无法弄清楚如何发送该类型...一个非常简单的通知,如天蓝色的(Windows一个不是Windows手机),只有一个没有格式化的字符串
答案 0 :(得分:5)
假设您正在使用WNS(而不是MPNS),只需从hub.wns对象调用SendRaw即可。语法是:
sendRaw(tags, payload, optionsOrCallbackopt, callback)
在http://dl.windowsazure.com/nodedocs/WnsService.html的推送通知中心查看NodeJS文档中的WNS服务。
对于.NET后端,您使用https://msdn.microsoft.com/en-us/library/azure/dn369343.aspx中记录的 NotificationHubClient.SendNotificationAsync 。您输入的通知类将是{@ 3}}中描述的WindowsNotification。
由于您要发送原始通知,因此您必须自己创建有效内容。有关如何创建原始有效负载的文档位于https://msdn.microsoft.com/en-us/library/azure/microsoft.servicebus.notifications.windowsnotification.aspx,更具体地说是:
答案 1 :(得分:0)
以下是一些可以执行此任务的工作代码(符合.Net Standard 2.0):
public static async Task SendRawNotification(string notificationString)
{
var sasToken = CreateSASToken($"http://{NotificationNamespace}.servicebus.windows.net/{NotificationHub}", "DefaultFullSharedAccessSignature", $"{SharedAccessKey}");
var description = new NotificationDescription
{
NotificationType = type,
Notification = JsonConvert.SerializeObject(notification)
};
var serialized = JsonConvert.SerializeObject(description);
byte[] contentInBytes = Encoding.UTF8.GetBytes(serialized);
HttpWebRequest request = WebRequest.Create($"https://{NotificationNamespace}.servicebus.windows.net/{NotificationHub}/messages/?api-version=2015-01") as HttpWebRequest;
request.Method = "POST";
request.ContentType = "application/octet-stream";
request.Headers.Add("Authorization", sasToken);
request.Headers.Add("X-WNS-Type", "wns/raw");
request.Headers.Add("ServiceBusNotification-Format", "windows");
using (Stream requestStream = request.GetRequestStream())
requestStream.Write(contentInBytes, 0, contentInBytes.Length);
using (HttpWebResponse webResponse = await request.GetResponseAsync() as HttpWebResponse)
{
if (webResponse.StatusCode != HttpStatusCode.Created)
{
throw new InvalidOperationException($"Failed to create notification: {serialized}");
}
}
}
private static string CreateSASToken(string resourceUri, string keyName, string key)
{
TimeSpan sinceEpoch = DateTime.UtcNow - new DateTime(1970, 1, 1);
var expiry = Convert.ToString((int)sinceEpoch.TotalSeconds + 3600); //EXPIRES in 1h
string stringToSign = HttpUtility.UrlEncode(resourceUri) + "\n" + expiry;
HMACSHA256 hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(stringToSign)));
var sasToken = String.Format(CultureInfo.InvariantCulture,
"SharedAccessSignature sr={0}&sig={1}&se={2}&skn={3}",
HttpUtility.UrlEncode(resourceUri), HttpUtility.UrlEncode(signature), expiry, keyName);
return sasToken;
}
此问题的先前答案具有无效链接,并且未提供有关如何实现此功能的有用信息。
不幸的是,截至编写此响应时,Azure Notification Hub SDK在使用NuGet软件包:Microsoft.Azure.NotificationHubs(2.0.0)时发送原始通知方面已被破坏
此功能可用,并且仍可在Microsoft.Azure.NotificationHubs(1.0.9)中使用,但是,此功能仅在以4.6.1为目标的.Net Framework项目中可用。
如果您希望在.Net
Core或.Net
Standard 2.0项目中发送原始通知,则将在发送时收到一个异常消息,类似于“您必须将内容类型设置为“应用程序/八位字节流””。这是因为,在SDK本身中,他们正在使用StringContent对象构造HttpRequest,该对象将“ charset-utf8”附加到ContentType标头中。
在发布对NuGet软件包的更新之前(Microsoft已经意识到此问题,并且当前正在努力提供更新),然后您必须自己创建HttpRequest。
不幸的是,再次严重缺乏有关如何实现此目的的Microsoft文档。
有几个步骤可以完成此操作,如下所示:
您尝试使用的资源的Uri。为了将请求发送到Azure通知中心,此文件的格式应如下所示:
https://{NotificationHubNamespace}.servicebus.windows.net/{NotificationHubName}
因此,如果您的通知名称空间为“ notification-ns”,而通知中心称为“ notification-hub”,则URI应为:
https://notification-ns.servicebus.windows.net/notification-hub
您需要从Azure门户复制下来DefaultFullSharedAccessSignature。您的签名应如下所示:
Endpoint=sb://xxxx.servicebus.windows.net/;SharedAccessKeyName=DefaultFullSharedAccessSignature;SharedAccessKey=xxxxxxxxx=
复制/保存“ SharedAccessKey =“之后的部分,因为它用于生成访问令牌。
调用CreateSASToken函数,将参数设置为以下内容:
resourceUri:"https://{NotificationHubNamespace}.servicebus.windows.net/{NotificationHubName}"
keyName: "DefaultFullSharedAccessSignature"
key: the saved part following "SharedAccessKey=" in the DefaultFullSharedAccessSignature
这将生成格式正确的SharedAccessSignature (SAS Key)
现在,您可以使用System.Net.Http library
创建HttpWebRequest
来发送原始通知。
答案 2 :(得分:0)
此后,Microsoft工程师为我提供了以下示例程序,该程序也能够发送原始通知,我认为在此处共享它是适当的:
using Newtonsoft.Json.Linq;
using System;
using System.Globalization;
using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Web;
namespace ConsoleApp
{
class Program
{
static string NH_NAMESPACE = "{Please input}";
static string HUB_NAME = "{Please input}";
static string KEY_NAME = "DefaultFullSharedAccessSignature";
static string KEY_VALUE = "{Please input}";
static void Main(string[] args)
{
JObject jobject = new JObject();
jobject.Add("text1", "my app");
jobject.Add("text2", "my value");
SendNotificaitonAsync(jobject.ToString()).Wait();
Console.ReadLine();
}
private static async Task SendNotificaitonAsync(string content)
{
string resourceUri = $"https://{NH_NAMESPACE}.servicebus.windows.net/{HUB_NAME}/messages/";
using (var request = CreateHttpRequest(HttpMethod.Post, resourceUri))
{
request.Content = new StringContent(content, Encoding.UTF8, "application/octet-stream");
request.Content.Headers.ContentType.CharSet = string.Empty;
var httpClient = new HttpClient();
var response = await httpClient.SendAsync(request);
Console.WriteLine(response.StatusCode);
}
}
private static HttpRequestMessage CreateHttpRequest(HttpMethod method, String resourceUri)
{
var request = new HttpRequestMessage(method, $"{resourceUri}?api-version=2017-04");
request.Headers.Add("Authorization", createToken(resourceUri, KEY_NAME, KEY_VALUE));
request.Headers.Add("X-WNS-Type", "wns/raw");
request.Headers.Add("ServiceBusNotification-Format", "windows");
return request;
}
private static string createToken(string resourceUri, string keyName, string key)
{
TimeSpan sinceEpoch = DateTime.UtcNow - new DateTime(1970, 1, 1);
var week = 60 * 60 * 24 * 7;
var expiry = Convert.ToString((int)sinceEpoch.TotalSeconds + week);
string stringToSign = HttpUtility.UrlEncode(resourceUri) + "\n" + expiry;
HMACSHA256 hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(stringToSign)));
var sasToken = String.Format(CultureInfo.InvariantCulture, "SharedAccessSignature sr={0}&sig={1}&se={2}&skn={3}", HttpUtility.UrlEncode(resourceUri), HttpUtility.UrlEncode(signature), expiry, keyName);
return sasToken;
}
}
}