public override Task <Mapping> GetSpecificMappingAsync(Protocol protocol, int publicPort)
{
Guard.IsTrue(protocol == Protocol.Tcp || protocol == Protocol.Udp, "protocol");
Guard.IsInRange(publicPort, 0, ushort.MaxValue, "port");
NatDiscoverer.TraceSource.LogInfo("GetSpecificMappingAsync - Getting mapping for protocol: {0} port: {1}", Enum.GetName(typeof(Protocol), protocol), publicPort);
var message = new GetSpecificPortMappingEntryRequestMessage(protocol, publicPort);
return(_soapClient
.InvokeAsync("GetSpecificPortMappingEntry", message.ToXml())
.TimeoutAfter(TimeSpan.FromSeconds(4))
.ContinueWith(task =>
{
if (!task.IsFaulted)
{
var responseData = task.Result;
var messageResponse = new GetPortMappingEntryResponseMessage(responseData, DeviceInfo.ServiceType, false);
return new Mapping(messageResponse.Protocol
, IPAddress.Parse(messageResponse.InternalClient)
, messageResponse.InternalPort
, publicPort // messageResponse.ExternalPort is short.MaxValue
, messageResponse.LeaseDuration
, messageResponse.PortMappingDescription);
}
else
{
MappingException e = task.Exception.InnerException as MappingException;
if (e != null && e.ErrorCode == UpnpConstants.NoSuchEntryInArray)
{
return null;
}
// DD-WRT Linux base router (and others probably) fails with 402-InvalidArgument
// when no mapping is found in the mappings table
if (e != null && e.ErrorCode == UpnpConstants.InvalidArguments)
{
NatDiscoverer.TraceSource.LogWarn("Router failed with 402-InvalidArgument. Mapping not found is assumed.");
return null;
}
throw task.Exception.InnerException;
}
}));
}
public void GetGenericMappingAsync(int index, List <Mapping> mappings,
TaskCompletionSource <IEnumerable <Mapping> > taskCompletionSource)
{
var message = new GetGenericPortMappingEntry(index);
_soapClient
.InvokeAsync("GetGenericPortMappingEntry", message.ToXml())
.TimeoutAfter(TimeSpan.FromSeconds(4))
.ContinueWith(task =>
{
if (!task.IsFaulted)
{
var responseData = task.Result;
var responseMessage = new GetPortMappingEntryResponseMessage(responseData,
DeviceInfo.ServiceType, true);
IPAddress internalClientIp;
if (!IPAddress.TryParse(responseMessage.InternalClient, out internalClientIp))
{
NatDiscoverer.TraceSource.LogWarn("InternalClient is not an IP address. Mapping ignored!");
}
else
{
var mapping = new Mapping(responseMessage.Protocol
, internalClientIp
, responseMessage.InternalPort
, responseMessage.ExternalPort
, responseMessage.LeaseDuration
, responseMessage.PortMappingDescription);
mappings.Add(mapping);
}
GetGenericMappingAsync(index + 1, mappings, taskCompletionSource);
}
else
{
MappingException e = task.Exception.InnerException as MappingException;
if (e == null)
{
throw task.Exception.InnerException;
}
if (e.ErrorCode == UpnpConstants.SpecifiedArrayIndexInvalid ||
e.ErrorCode == UpnpConstants.NoSuchEntryInArray)
{
// there are no more mappings
taskCompletionSource.SetResult(mappings);
return;
}
// DD-WRT Linux base router (and others probably) fails with 402-InvalidArgument when index is out of range
if (e.ErrorCode == UpnpConstants.InvalidArguments)
{
NatDiscoverer.TraceSource.LogWarn("Router failed with 402-InvalidArgument. No more mappings is assumed.");
taskCompletionSource.SetResult(mappings);
return;
}
throw task.Exception.InnerException;
}
});
}
