c# - UWP 推送通知

Question

这是针对 Windows 10 的应用程序。我按照这个教程进行操作: https://msdn.microsoft.com/windows/uwp/controls-and-patterns/tiles-and-notifications-windows-push-notification-services--wns--overview

此时我得到了正确的下一个值:

SID

Secret

Uri(I got this on my application)

我得到的 Uri 是用这个简单的代码:

channel=await PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync();

通过上面的行，我得到了一个可以使用大约一个月的 URL。

我现在无法做的部分是将推送通知发送到应用程序。

任何有关如何使用 Uri 以及如何向其发送信息的信息，我都会很高兴，因为我收到了 400 错误，这与我的帖子消息有问题有关。

此链接显示了如何发送信息，但我没有得到任何有用的代码。 https://msdn.microsoft.com/library/windows/apps/hh465435

另外:

我不拥有或使用任何基于云的网络服务。

我可以在发布或 Debug模式下收到推送通知吗？

可以使用 PHP 完成具有正确 Uri 的推送通知吗？

Answer 1

刚刚完成 Jerrak0s 的解决方案

鉴于您的 Azure 通知中心:

使用 REST 发送推送通知的代码:

private static async void SendNotificationAsync()
{
        //Setting\Access policies\DefaultFullSharedAccessSignature policy
        string connStr = "Endpoint=sb://[namespace].servicebus.windows.net/;SharedAccessKeyName=DefaultFullSharedAccessSignature;SharedAccessKey=xyz";
        var util = new ConnectionStringUtility(connStr);

        //toast in XML
        var toast = "<toast>    <visual>
                       <binding template="ToastText01">
                         < text id = "1" > Test message </ text >
                     </ binding >    </ visual > </ toast >";

        //call WNS
        var uri = "https://[namespace].servicebus.windows.net/[hub name]/messages/?api-version=2015-04";

        using (var httpClient = new HttpClient())
        {                
            var request = new HttpRequestMessage(HttpMethod.Post, uri);
            request.Content = new StringContent(toast);
            request.Headers.Add("Authorization", util.getSaSToken(uri, 1000));
            //request.Headers.Add("ServiceBusNotification-Tags", "TAG");
            request.Headers.Add("ServiceBusNotification-Format", "windows");
            request.Headers.Add("X-WNS-Type", "wns/toast");
            var response = await httpClient.SendAsync(request);
            await response.Content.ReadAsStringAsync();
        }
    }

用于解析端点和 SAS token 的实用程序类:

public class ConnectionStringUtility
{
    public string Endpoint { get; private set; }
    public string SasKeyName { get; private set; }
    public string SasKeyValue { get; private set; }

    public ConnectionStringUtility(string connectionString)
    {
        //Parse Connectionstring
        char[] separator = { ';' };
        string[] parts = connectionString.Split(separator);
        for (int i = 0; i < parts.Length; i++)
        {
            if (parts[i].StartsWith("Endpoint"))
                Endpoint = "https" + parts[i].Substring(11);
            if (parts[i].StartsWith("SharedAccessKeyName"))
                SasKeyName = parts[i].Substring(20);
            if (parts[i].StartsWith("SharedAccessKey"))
                SasKeyValue = parts[i].Substring(16);
        }
    }

    public string getSaSToken(string uri, int minUntilExpire)
    {
        string targetUri = Uri.EscapeDataString(uri.ToLower()).ToLower();

        // Add an expiration in seconds to it.
        long expiresOnDate = DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond;
        expiresOnDate += minUntilExpire * 60 * 1000;
        long expires_seconds = expiresOnDate / 1000;
        String toSign = targetUri + "\n" + expires_seconds;

        // Generate a HMAC-SHA256 hash or the uri and expiration using your secret key.
        MacAlgorithmProvider macAlgorithmProvider = MacAlgorithmProvider.OpenAlgorithm(MacAlgorithmNames.HmacSha256);
        BinaryStringEncoding encoding = BinaryStringEncoding.Utf8;
        var messageBuffer = CryptographicBuffer.ConvertStringToBinary(toSign, encoding);
        IBuffer keyBuffer = CryptographicBuffer.ConvertStringToBinary(SasKeyValue, encoding);
        CryptographicKey hmacKey = macAlgorithmProvider.CreateKey(keyBuffer);
        IBuffer signedMessage = CryptographicEngine.Sign(hmacKey, messageBuffer);

        string signature = Uri.EscapeDataString(CryptographicBuffer.EncodeToBase64String(signedMessage));

        return "SharedAccessSignature sr=" + targetUri + "&sig=" + signature + "&se=" + expires_seconds + "&skn=" + SasKeyName;
    }
}