IronPigeon.Relay.Controllers.InboxController.PushNotifyInboxMessageWinStoreAsync C# (CSharp) Method

        private async Task PushNotifyInboxMessageWinStoreAsync(InboxEntity inbox, int failedAttempts = 0)
        {
            if (string.IsNullOrEmpty(inbox.ClientPackageSecurityIdentifier) || string.IsNullOrEmpty(inbox.PushChannelUri))
            {
                return;
            }

            var client = await this.ClientTable.GetAsync(inbox.ClientPackageSecurityIdentifier);
            string bearerToken = client.AccessToken;
            var pushNotifyRequest = new HttpRequestMessage(HttpMethod.Post, inbox.PushChannelUri);
            pushNotifyRequest.Headers.Authorization = new AuthenticationHeaderValue("Bearer", bearerToken);
            pushNotifyRequest.Headers.Add("X-WNS-Type", "wns/raw");
            pushNotifyRequest.Content = new StringContent(inbox.PushChannelContent ?? string.Empty);

            // yes, it's a string, but we must claim it's an octet-stream
            pushNotifyRequest.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");

            var response = await this.HttpClient.SendAsync(pushNotifyRequest);
            if (response.IsSuccessStatusCode)
            {
                inbox.LastWindows8PushNotificationUtc = DateTime.UtcNow;
                this.InboxTable.UpdateObject(inbox);
            }
            else
            {
                if (failedAttempts == 0)
                {
                    var authHeader = response.Headers.WwwAuthenticate.FirstOrDefault();
                    if (authHeader != null)
                    {
                        if (authHeader.Parameter.Contains("Token expired"))
                        {
                            await client.AcquireWnsPushBearerTokenAsync(this.HttpClient);
                            this.ClientTable.UpdateObject(client);
                            await this.ClientTable.SaveChangesAsync();
                            await this.PushNotifyInboxMessageWinStoreAsync(inbox, failedAttempts + 1);
                            return;
                        }
                    }
                }

                // Log a failure.
                // TODO: code here.
            }
        }