ShipmentAsyncResult GetResponseFromService(string httpRequestMethod, string authorizationHeader, Shipment shipment = null)
{
string shipperServiceUrl = ConfigurationManager.AppSettings["TargetService"] + RelativePath;
JavaScriptSerializer serializer = new JavaScriptSerializer();
IList <Shipment> shipmentList = null;
try
{
HttpWebRequest request = WebRequest.Create(shipperServiceUrl) as HttpWebRequest;
request.Method = httpRequestMethod;
request.Headers["Authorization"] = authorizationHeader;
request.ContentType = "application/json";
if (shipment != null)
{
// serialize the shipment if available
string shipmentData;
shipmentData = serializer.Serialize(shipment);
using (Stream stream = request.GetRequestStream())
{
stream.Write(Encoding.UTF8.GetBytes(shipmentData), 0, shipmentData.Length);
}
}
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
// deserialize the response
shipmentList = serializer.Deserialize(
new StreamReader(response.GetResponseStream()).ReadToEnd(),
typeof(IList <Shipment>)) as IList <Shipment>;
response.Close();
}
}
catch (WebException webEx)
{
// error during fetching data
string errorMessage = errorMessage = webEx.Message;
if (webEx.Response != null)
{
HttpWebResponse response = (HttpWebResponse)webEx.Response;
if (response.StatusCode == HttpStatusCode.Unauthorized)
{
MessageBoxResult result = MessageBox.Show("Do you want to clear the user from the token cache and reauthenticate?", "Error talking to service", MessageBoxButton.OKCancel);
if (result == MessageBoxResult.OK)
{
// clear the cache and reauthenticate the user to get a new token
_authenticationContext.TokenCacheStore.Clear();
selectedIdentityProviderDescriptor = null;
DisplayErrorMessage("Please retry your operation now!");
}
else
{
DisplayErrorMessage(errorMessage);
}
return(new ShipmentAsyncResult(null));
}
else
{
errorMessage += new StreamReader(webEx.Response.GetResponseStream()).ReadToEnd();
throw new InvalidOperationException(errorMessage);
}
}
}
catch (Exception ex)
{
throw new InvalidOperationException("Error occurred while creating a new shipment. " + ex.Message);
}
return(new ShipmentAsyncResult(shipmentList));
}
ShipmentAsyncResult CreateNewShipment(Shipment shipment, string authorizationHeader)
{
return(GetResponseFromService("POST", authorizationHeader, shipment));
}