/// <summary>
/// This helper function controls the actual formatting of the data
/// written to the web request stream.
/// </summary>
/// <param name="request">A web request instance properly configured for SMP.</param>
/// <param name="reqicoms">An ICOMS element woith a proper child element to indicate a task.
/// </param>
protected virtual void SendRequest(WebRequest webRequest, ITVRequest smpRequest)
{
Stream stream = null;
XmlTextWriter xmlTextWriter = null;
try
{
stream = webRequest.GetRequestStream();
xmlTextWriter = new XmlTextWriter(stream, this.RequestEncoding);
xmlTextWriter.WriteRaw(ObjectSerializerWithEncoding.Serialize(smpRequest, Encoding.UTF8));
}
catch (WebException webEx)
{
throw new SmpUnavailableException(webEx);
}
catch (Exception ex)
{
throw new SmpProxyException(ex);
}
finally
{
//clean up writer and stream
if (null != xmlTextWriter)
{
xmlTextWriter.Close();
}
if (null != stream)
{
stream.Close();
}
}
}
/// <summary>
/// This method reads the response stream and serializes the results
/// into a proper SMP Response.
/// </summary>
/// <param name="response">
/// A standard web response object obtained from the above web request
/// instance.
/// </param>
/// <returns>
/// An ITVResponse with the appropriate elements set
/// </returns>
protected virtual ITVResponse ReceiveResponse(HttpWebResponse response)
{
//check http response before we try to deserialize
if (response.StatusCode != HttpStatusCode.OK)
{
throw new SmpUnavailableException(
string.Format("The call to the WOTL failed with return code '{0}' and message '{1}'", response.StatusCode.ToString(), response.StatusDescription));
}
ITVResponse smpResponse = null;
Stream stream = null;
StreamReader streamReader = null;
try
{
stream = response.GetResponseStream();
// NOTE: Cannot use XmlTextReader. It complains and gives
// an empty string. instead use the generic StreamReader
streamReader = new StreamReader(stream);
smpResponse = (ITVResponse)ObjectSerializerWithEncoding.Deserialize(streamReader.ReadToEnd(), typeof(ITVResponse));
}
catch (IOException ioEx)
{
throw new SmpUnavailableException(ioEx);
}
catch (InvalidOperationException ivoEx)
{
throw new SmpUnavailableException(ivoEx);
}
catch (Exception ex)
{
throw new SmpProxyException(ex);
}
finally
{
//clean up stream reader and stream
if (null != streamReader)
{
streamReader.Close();
}
if (null != stream)
{
stream.Close();
}
}
return(smpResponse);
}
