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 override async 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);
try
{
var message = new GetSpecificPortMappingEntryRequestMessage(protocol, publicPort);
var responseData = await _soapClient
.InvokeAsync("GetSpecificPortMappingEntry", message.ToXml())
.TimeoutAfter(TimeSpan.FromSeconds(4));
var messageResponse = new GetPortMappingEntryResponseMessage(responseData, DeviceInfo.ServiceType, false);
if (messageResponse.Protocol != protocol)
{
NatDiscoverer.TraceSource.LogWarn("Router responded to a protocol {0} query with a protocol {1} answer, work around applied.", protocol, messageResponse.Protocol);
}
return(new Mapping(protocol
, IPAddress.Parse(messageResponse.InternalClient)
, messageResponse.InternalPort
, publicPort // messageResponse.ExternalPort is short.MaxValue
, messageResponse.LeaseDuration
, messageResponse.PortMappingDescription));
}
catch (MappingException e)
{
// there are no more mappings
if (e.ErrorCode == UpnpConstants.SpecifiedArrayIndexInvalid ||
e.ErrorCode == UpnpConstants.NoSuchEntryInArray
// DD-WRT Linux base router (and others probably) fails with 402-InvalidArgument when index is out of range
|| e.ErrorCode == UpnpConstants.InvalidArguments
// LINKSYS WRT1900AC AC1900 it returns errocode 501-PAL_UPNP_SOAP_E_ACTION_FAILED
|| e.ErrorCode == UpnpConstants.ActionFailed)
{
NatDiscoverer.TraceSource.LogWarn("Router failed with {0}-{1}. No more mappings is assumed.", e.ErrorCode, e.ErrorText);
return(null);
}
throw;
}
}