public override async Task <Mapping> GetSpecificMappingAsync(Protocol protocol, int publicPort)
{
var message = new GetSpecificPortMappingEntryMessage(protocol, publicPort, this);
var response = await SendMessageAsync(message).ConfigureAwait(false);
if (!(response is GetSpecificPortMappingEntryResponseMessage msg))
{
throw new MappingException(ErrorCode.Unknown, "Invalid response received when getting the specific mapping");
}
return(new Mapping(protocol, msg.InternalPort, publicPort, msg.LeaseDuration, msg.PortMappingDescription));
}
internal static PortMapAsyncResult Create(MessageBase message, WebRequest request, AsyncCallback storedCallback, object asyncState)
{
if (message is GetGenericPortMappingEntry)
{
return(new GetAllMappingsAsyncResult(request, storedCallback, asyncState));
}
if (message is GetSpecificPortMappingEntryMessage)
{
GetSpecificPortMappingEntryMessage mapMessage = (GetSpecificPortMappingEntryMessage)message;
GetAllMappingsAsyncResult result = new GetAllMappingsAsyncResult(request, storedCallback, asyncState);
result.SpecificMapping = new Mapping(mapMessage.protocol, 0, mapMessage.externalPort, 0);
return(result);
}
return(new PortMapAsyncResult(request, storedCallback, asyncState));
}
public override IAsyncResult BeginGetSpecificMapping(Protocol protocol, int port, AsyncCallback callback, object asyncState)
{
GetSpecificPortMappingEntryMessage message = new GetSpecificPortMappingEntryMessage(protocol, port, this);
return(this.BeginMessageInternal(message, callback, asyncState, new AsyncCallback(this.EndGetSpecificMappingInternal)));
}