private void HandleContextCore(HttpListenerContext context)
{
XmlReader reader = XmlReader.Create(context.Request.InputStream);
reader.ReadToFollowing("Body", Protocol.SoapEnvelopeSchema);
while (Helper.ReadToNextElement(reader))
{
if (!service.Actions.ContainsKey(reader.LocalName))
{
throw UpnpControlException.InvalidAction();
}
ServiceAction action = service.Actions[reader.LocalName];
BriefAction(reader.ReadSubtree(), action);
try {
action.Execute();
} catch (UpnpControlException) {
throw;
} catch (ArgumentOutOfRangeException e) {
throw UpnpControlException.ArgumentValueOutOfRange(e.Message);
} catch (ArgumentException e) {
throw UpnpControlException.ArgumentValueInvalid(e.Message);
} catch (NotImplementedException e) {
throw UpnpControlException.OptionalActionNotImplimented(e.Message);
} catch (Exception e) {
throw UpnpControlException.ActionFailed(e.Message);
}
DebriefAction(context, action);
}
}
private void BriefAction(XmlReader reader, ServiceAction action)
{
reader.Read();
foreach (Argument argument in action.Arguments.Values)
{
argument.Value = argument.RelatedStateVariable.DefaultValue;
}
while (Helper.ReadToNextElement(reader))
{
if (!action.Arguments.ContainsKey(reader.Name))
{
throw UpnpControlException.InvalidArgs();
}
Argument argument = action.Arguments[reader.Name];
if (argument.RelatedStateVariable.DataType.IsEnum)
{
try {
argument.Value = Enum.Parse(argument.RelatedStateVariable.DataType, reader.ReadString());
} catch {
throw UpnpControlException.ArgumentValueOutOfRange();
}
}
else
{
try {
argument.Value = Convert.ChangeType(reader.ReadString(), argument.RelatedStateVariable.DataType);
} catch {
throw UpnpControlException.InvalidArgs();
}
// TODO handle min, max, and step
}
}
reader.Close();
}
private void HandleFault(HttpListenerContext context, UpnpControlException e)
{
context.Response.StatusCode = 500;
context.Response.StatusDescription = "Internal Server Error";
context.Response.ContentType = @"text/xml; charset=""utf-8""";
context.Response.Headers.Add("Date", DateTime.Now.ToString("r"));
context.Response.Headers.Add("EXT:");
context.Response.AddHeader("SERVER", ServerString);
Stream stream = context.Response.OutputStream;
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Encoding.UTF8;
XmlWriter writer = XmlWriter.Create(stream, settings);
Helper.WriteStartSoapBody(writer);
writer.WriteStartElement("Fault", Protocol.SoapEnvelopeSchema);
writer.WriteStartElement("faultcode");
writer.WriteValue(String.Format("{0}:Client", writer.LookupPrefix(Protocol.SoapEnvelopeSchema)));
writer.WriteEndElement();
writer.WriteStartElement("faultstring");
writer.WriteValue("UPnPError");
writer.WriteEndElement();
writer.WriteStartElement("detail");
writer.WriteStartElement("UPnPError", Protocol.ControlUrn);
writer.WriteStartElement("errorCode");
writer.WriteValue(e.Code);
writer.WriteEndElement();
writer.WriteStartElement("errorDescription");
writer.WriteValue(e.Message);
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndElement();
Helper.WriteEndSoapBody(writer);
writer.Flush();
context.Response.ContentLength64 = stream.Length;
}
private void HandleFault(HttpListenerContext context, UpnpControlException e)
{
context.Response.StatusCode = 500;
context.Response.StatusDescription = "Internal Server Error";
context.Response.ContentType = @"text/xml; charset=""utf-8""";
context.Response.Headers.Add ("Date", DateTime.Now.ToString ("r"));
context.Response.Headers.Add ("EXT:");
context.Response.AddHeader ("SERVER", ServerString);
Stream stream = context.Response.OutputStream;
XmlWriterSettings settings = new XmlWriterSettings ();
settings.Encoding = Encoding.UTF8;
XmlWriter writer = XmlWriter.Create (stream, settings);
Helper.WriteStartSoapBody (writer);
writer.WriteStartElement ("Fault", Protocol.SoapEnvelopeSchema);
writer.WriteStartElement ("faultcode");
writer.WriteValue (String.Format ("{0}:Client", writer.LookupPrefix (Protocol.SoapEnvelopeSchema)));
writer.WriteEndElement ();
writer.WriteStartElement ("faultstring");
writer.WriteValue ("UPnPError");
writer.WriteEndElement ();
writer.WriteStartElement ("detail");
writer.WriteStartElement ("UPnPError", Protocol.ControlUrn);
writer.WriteStartElement ("errorCode");
writer.WriteValue (e.Code);
writer.WriteEndElement ();
writer.WriteStartElement ("errorDescription");
writer.WriteValue (e.Message);
writer.WriteEndElement ();
writer.WriteEndElement ();
writer.WriteEndElement ();
writer.WriteEndElement ();
writer.WriteEndElement ();
Helper.WriteEndSoapBody (writer);
writer.Flush ();
context.Response.ContentLength64 = stream.Length;
}
