public async Task SendNotificationAsync(WP.PushSubscription subscription, PushMessage message, string target)
{
_logger.LogInformation($"Sending VAPID push: {message.Content}: Image {_options.ImageUrl}");
var sub = new WebPush.PushSubscription(
subscription.Endpoint,
subscription.Keys["p256dh"],
subscription.Keys["auth"]
);
var vapid = new VapidDetails(_options.Subject, _options.PublicKey, _options.PrivateKey);
var payload = JsonConvert.SerializeObject(new {
notification = new {
title = message.Topic,
body = message.Content,
icon = _options.ImageUrl,
click_action = string.IsNullOrEmpty(target) ? _options.ClickUrl : target
}
});
var client = new WebPushClient();
try {
_logger.LogDebug($"VAPID: Push to {subscription.Endpoint}");
await client.SendNotificationAsync(sub, payload, vapid);
} catch (WebPushException ex) {
_logger.LogError($"ERROR in VAPID: {ex.Message}");
_logger.LogError($"{subscription.Endpoint}");
} catch (Exception ex) {
_logger.LogError($"ERROR in VAPID: {ex.Message}");
_logger.LogError($"{subscription.Endpoint}");
}
}
public PushSubscription(WebPush.PushSubscription subscription)
{
Id = GetId(subscription.Endpoint);
Partition = PARTITION_KEY_VALUE;
Endpoint = subscription.Endpoint;
Keys = subscription.Keys;
}
public PushSubscription(WebPush.PushSubscription subscription, int id, string clientip)
{
Endpoint = subscription.Endpoint;
Keys = subscription.Keys;
MemberID = id;
clientIP = clientip;
}
public void SendNotification(Facets.PushSubscription subscription, string message, string publicKey, string privateKey)
{
var webSubscription = new Lib.Net.Http.WebPush.PushSubscription();
webSubscription.Endpoint = subscription.Endpoint;
webSubscription.Keys = subscription.Keys;
//Need to make sure we're using right keys for subscription, maybe change to get for specific site.
var vapidAuth = new Lib.Net.Http.WebPush.Authentication.VapidAuthentication(publicKey, privateKey);
var pushMessage = new PushMessage(message);
var task = webPushClient.RequestPushMessageDeliveryAsync(webSubscription, pushMessage, vapidAuth);
try
{
task.Wait();
}
catch (AggregateException ae)
{
foreach (var e in ae.InnerExceptions)
{
throw e;
}
}
}
public async Task <IActionResult> StoreSubscription([FromBody] WP.PushSubscription subscription)
{
var subscriptionId = await _subscriptionStore.StoreSubscriptionAsync(_applicationUser.Id, subscription);
_logger.LogDebug($"Creating push registration for {_applicationUser.Id} with subscriptionId of {subscriptionId}");
return(Ok(new {
uid = subscriptionId,
status = true
}));
}
private async Task SendNotificationAsync(Lib.Net.Http.WebPush.PushSubscription subscription, PushMessage message, CancellationToken cancellationToken)
{
var _pushClient = new PushServiceClient();
_pushClient.DefaultAuthentication = new VapidAuthentication("BP3KYW8aPpClaCjP2MUceUNTwqBSaK88kTnl6SWg0k134zAy_dNNub8LfGHo83bbkm-LUGAd_aLKM0z_4cpUlY8", "SSvrSz8WiLxNJB4SOZXiBs12n3VPLyftqHR05xpobGo");
try
{
await _pushClient.RequestPushMessageDeliveryAsync(subscription, message, cancellationToken);
}
catch (Exception ex)
{
//_logger?.LogError(ex, "Failed requesting push message delivery to {0}.", subscription.Endpoint);
}
}
private HttpRequestMessage PreparePushMessageDeliveryRequest(PushSubscription subscription, PushMessage message, VapidAuthentication authentication, VapidAuthenticationScheme authenticationScheme)
{
authentication = authentication ?? DefaultAuthentication;
if (authentication == null)
{
throw new InvalidOperationException("The VAPID authentication information is not available");
}
HttpRequestMessage pushMessageDeliveryRequest = new HttpRequestMessage(HttpMethod.Post, subscription.Endpoint)
{
Headers =
{
{ TTL_HEADER_NAME, (message.TimeToLive ?? DefaultTimeToLive).ToString(CultureInfo.InvariantCulture) }
}
};
pushMessageDeliveryRequest = SetAuthentication(pushMessageDeliveryRequest, subscription, authentication, authenticationScheme);
pushMessageDeliveryRequest = SetUrgency(pushMessageDeliveryRequest, message);
pushMessageDeliveryRequest = SetTopic(pushMessageDeliveryRequest, message);
pushMessageDeliveryRequest = SetContent(pushMessageDeliveryRequest, subscription, message);
return(pushMessageDeliveryRequest);
}
public async Task SendNotificationAsync(Lib.Net.Http.WebPush.PushSubscription subscription, PushMessage message, CancellationToken cancellationToken)
{
try
{
WebPush.PushSubscription sub = new WebPush.PushSubscription();
foreach (KeyValuePair <string, string> en in subscription.Keys)
{
Console.WriteLine("Keys and Values: ");
Console.WriteLine(en.Key + " : " + en.Value);
}
sub.Auth = subscription.Keys["auth"];
sub.Endpoint = subscription.Endpoint;
sub.P256DH = subscription.Keys["p256dh"];
await _webPushClient.SendNotificationAsync(sub, message.Content, vapidDetails);
}
catch (Exception ex)
{
await HandlePushMessageDeliveryExceptionAsync(ex, subscription);
}
}
public Task AddAsync(WebPush.PushSubscription subscription)
{
return(Subscriptions.CreateItemAsync <PushSubscription>(new PushSubscription(subscription), _partitionKey));
}
/// <summary>
/// Requests delivery of push message by push service as an asynchronous operation.
/// </summary>
/// <param name="subscription">The push service subscription.</param>
/// <param name="message">The push message.</param>
/// <param name="authentication">The authentication details.</param>
/// <param name="authenticationScheme">The <see cref="VapidAuthenticationScheme"/> to use.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task RequestPushMessageDeliveryAsync(PushSubscription subscription, PushMessage message, VapidAuthentication authentication, VapidAuthenticationScheme authenticationScheme)
{
return(RequestPushMessageDeliveryAsync(subscription, message, authentication, authenticationScheme, CancellationToken.None));
}
/// <summary>
/// Requests delivery of push message by push service as an asynchronous operation.
/// </summary>
/// <param name="subscription">The push service subscription.</param>
/// <param name="message">The push message.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task RequestPushMessageDeliveryAsync(PushSubscription subscription, PushMessage message)
{
return(RequestPushMessageDeliveryAsync(subscription, message, null, DefaultAuthenticationScheme, CancellationToken.None));
}
/// <summary>
/// Creates new instance of <see cref="PushServiceClientException"/> class.
/// </summary>
/// <param name="message">The message that describes the current exception.</param>
/// <param name="statusCode">The status code of the push service response.</param>
/// <param name="headers">The headers of the push service response.</param>
/// <param name="body">The body of the push service response.</param>
/// <param name="pushSubscription">The <see cref="WebPush.PushSubscription"/> that initiated the push service request.</param>
public PushServiceClientException(string message, HttpStatusCode statusCode, HttpResponseHeaders headers, string body, PushSubscription pushSubscription)
: base(message)
{
StatusCode = statusCode;
Headers = headers;
Body = body;
PushSubscription = pushSubscription;
}
public PushSubscription(Lib.Net.Http.WebPush.PushSubscription subscription)
{
Endpoint = subscription.Endpoint;
Keys = subscription.Keys;
}
private async Task HandlePushMessageDeliveryExceptionAsync(Exception exception, Lib.Net.Http.WebPush.PushSubscription subscription)
{
PushServiceClientException pushServiceClientException = exception as PushServiceClientException;
if (pushServiceClientException is null)
{
_logger?.LogError(exception, "Failed requesting push message delivery to {0}.", subscription.Endpoint);
}
else
{
if ((pushServiceClientException.StatusCode == HttpStatusCode.NotFound) || (pushServiceClientException.StatusCode == HttpStatusCode.Gone))
{
using (IPushSubscriptionStoreAccessor subscriptionStoreAccessor = _subscriptionStoreAccessorProvider.GetPushSubscriptionStoreAccessor())
{
await subscriptionStoreAccessor.PushSubscriptionStore.DiscardSubscriptionAsync(subscription.Endpoint);
}
_logger?.LogInformation("Subscription has expired or is no longer valid and has been removed.");
}
}
}
/// <summary>
/// Requests delivery of push message by push service as an asynchronous operation.
/// </summary>
/// <param name="subscription">The push service subscription.</param>
/// <param name="message">The push message.</param>
/// <param name="authentication">The authentication details.</param>
/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task RequestPushMessageDeliveryAsync(PushSubscription subscription, PushMessage message, VapidAuthentication authentication, CancellationToken cancellationToken)
{
return(RequestPushMessageDeliveryAsync(subscription, message, authentication, DefaultAuthenticationScheme, cancellationToken));
}
private static HttpRequestMessage SetAuthentication(HttpRequestMessage pushMessageDeliveryRequest, PushSubscription subscription, VapidAuthentication authentication, VapidAuthenticationScheme authenticationScheme)
{
Uri endpointUri = new Uri(subscription.Endpoint);
string audience = endpointUri.Scheme + @"://" + endpointUri.Host;
if (authenticationScheme == VapidAuthenticationScheme.WebPush)
{
VapidAuthentication.WebPushSchemeHeadersValues webPushSchemeHeadersValues = authentication.GetWebPushSchemeHeadersValues(audience);
pushMessageDeliveryRequest.Headers.Authorization = new AuthenticationHeaderValue(WEBPUSH_AUTHENTICATION_SCHEME, webPushSchemeHeadersValues.AuthenticationHeaderValueParameter);
pushMessageDeliveryRequest.Headers.Add(CRYPTO_KEY_HEADER_NAME, webPushSchemeHeadersValues.CryptoKeyHeaderValue);
}
else
{
pushMessageDeliveryRequest.Headers.Authorization = new AuthenticationHeaderValue(VAPID_AUTHENTICATION_SCHEME, authentication.GetVapidSchemeAuthenticationHeaderValueParameter(audience));
}
return(pushMessageDeliveryRequest);
}
private static HttpRequestMessage SetContent(HttpRequestMessage pushMessageDeliveryRequest, PushSubscription subscription, PushMessage message)
{
HttpContent httpContent = message.HttpContent;
if (httpContent is null)
{
pushMessageDeliveryRequest.Content = null;
}
else
{
AsymmetricCipherKeyPair applicationServerKeys = ECKeyHelper.GenerateAsymmetricCipherKeyPair();
byte[] applicationServerPublicKey = ((ECPublicKeyParameters)applicationServerKeys.Public).Q.GetEncoded(false);
pushMessageDeliveryRequest.Content = new Aes128GcmEncodedContent(
httpContent,
GetKeyingMaterial(subscription, applicationServerKeys.Private, applicationServerPublicKey),
applicationServerPublicKey,
CONTENT_RECORD_SIZE
);
}
return(pushMessageDeliveryRequest);
}
private static async Task HandlePushMessageDeliveryRequestResponse(HttpResponseMessage pushMessageDeliveryRequestResponse, PushSubscription subscription)
{
if (pushMessageDeliveryRequestResponse.StatusCode == HttpStatusCode.Created)
{
return;
}
string reason = String.IsNullOrWhiteSpace(pushMessageDeliveryRequestResponse.ReasonPhrase) ?
$"Received unexpected response code: {pushMessageDeliveryRequestResponse.StatusCode}"
: pushMessageDeliveryRequestResponse.ReasonPhrase;
string content = await pushMessageDeliveryRequestResponse.Content.ReadAsStringAsync();
throw new PushServiceClientException(reason, pushMessageDeliveryRequestResponse.StatusCode, pushMessageDeliveryRequestResponse.Headers, content, subscription);
}
public void Add(WebPush.PushSubscription subscription)
{
_subscriptions.Insert(new PushSubscription(subscription));
}
public Task SendNotificationAsync(Lib.Net.Http.WebPush.PushSubscription subscription, PushMessage message)
{
return(SendNotificationAsync(subscription, message, CancellationToken.None));
}
public PushSubscription(WebPush.PushSubscription subscription)
{
Endpoint = subscription.Endpoint;
Keys = subscription.Keys;
}
public PushSubscription(string id, WP.PushSubscription subscription)
{
Id = id;
Endpoint = subscription.Endpoint;
Keys = subscription.Keys;
}
