CallingUpdateActivity.cs

log.Info("Adding Headers for Update Activity");
client.DefaultRequestHeaders.Add("AS-MainActivityId", mainActivityId);
client.DefaultRequestHeaders.Add("AS-StageActivityId", stageActivityId);
client.DefaultRequestHeaders.Add("AS-Status", "Success");
client.DefaultRequestHeaders.Remove("AS-ArchiveMessage");
log.Info("Successfully Added Headers");

var updateActivityUri = new Uri(req.RequestUri.AbsoluteUri.Replace(req.RequestUri.PathAndQuery, "/api/UpdateActivity"));

log.Info("Calling update Activity");

var updateActivityResponse = await client.PostAsync(updateActivityUri, new StringContent(activityContent.MessageBody));
log.Info("Response from Update Activity :" + updateActivityResponse);
log.Info("Update Activity Completed");