private void EndMessageInternal(IAsyncResult result)
{
HttpWebResponse response = null;
PortMapAsyncResult mappingResult = result.AsyncState as PortMapAsyncResult;
try
{
try
{
response = (HttpWebResponse)mappingResult.Request.EndGetResponse(result);
}
catch (WebException ex)
{
// Even if the request "failed" i want to continue on to read out the response from the router
response = ex.Response as HttpWebResponse;
if (response == null)
{
mappingResult.SavedMessage = new ErrorMessage((int)ex.Status, ex.Message);
}
}
if (response != null)
{
mappingResult.SavedMessage = DecodeMessageFromResponse(response.GetResponseStream(), response.ContentLength);
}
}
finally
{
if (response != null)
{
response.Close();
}
}
}
private void CompleteMessage(IAsyncResult result)
{
PortMapAsyncResult mappingResult = result.AsyncState as PortMapAsyncResult;
mappingResult.CompletedSynchronously = result.CompletedSynchronously;
mappingResult.Complete();
}
/// <summary>
/// Ends an async request to get the external ip address of the router
/// </summary>
public override IPAddress EndGetExternalIP(IAsyncResult result)
{
if (result == null)
{
throw new ArgumentNullException("result");
}
PortMapAsyncResult mappingResult = result as PortMapAsyncResult;
if (mappingResult == null)
{
throw new ArgumentException("Invalid AsyncResult", "result");
}
if (!result.IsCompleted)
{
result.AsyncWaitHandle.WaitOne();
}
if (mappingResult.SavedMessage is ErrorMessage)
{
ErrorMessage msg = mappingResult.SavedMessage as ErrorMessage;
throw new MappingException(msg.ErrorCode, msg.Description);
}
return(((GetExternalIPAddressResponseMessage)mappingResult.SavedMessage).ExternalIPAddress);
}
private IAsyncResult BeginMessageInternal(MessageBase message, AsyncCallback storedCallback, object asyncState, AsyncCallback callback)
{
byte[] body;
WebRequest request = message.Encode(out body);
PortMapAsyncResult mappingResult = PortMapAsyncResult.Create(message, request, storedCallback, asyncState);
if (body.Length > 0)
{
request.ContentLength = body.Length;
request.BeginGetRequestStream(delegate(IAsyncResult result) {
try
{
Stream s = request.EndGetRequestStream(result);
s.Write(body, 0, body.Length);
request.BeginGetResponse(callback, mappingResult);
}
catch (Exception ex)
{
mappingResult.Complete(ex);
}
}, null);
}
else
{
request.BeginGetResponse(callback, mappingResult);
}
return(mappingResult);
}
/// <summary>
///
/// </summary>
/// <param name="result"></param>
public override void EndDeletePortMap(IAsyncResult result)
{
if (result == null)
{
throw new ArgumentNullException("result");
}
PortMapAsyncResult mappingResult = result as PortMapAsyncResult;
if (mappingResult == null)
{
throw new ArgumentException("Invalid AsyncResult", "result");
}
// Check if we need to wait for the operation to finish
if (!mappingResult.IsCompleted)
{
mappingResult.AsyncWaitHandle.WaitOne();
}
// If we have a saved exception, it means something went wrong during the mapping
// so we just rethrow the exception and let the user figure out what they should do.
if (mappingResult.SavedMessage is ErrorMessage)
{
ErrorMessage msg = mappingResult.SavedMessage as ErrorMessage;
throw new MappingException(msg.ErrorCode, msg.Description);
}
// If all goes well, we just return
//return true;
}
