public override async Task<Mapping> GetSpecificMappingAsync (Protocol protocol, int port)
{
Guard.IsTrue(protocol == Protocol.Tcp || protocol == Protocol.Udp, "protocol");
Guard.IsInRange(port, 0, ushort.MaxValue, "port");
NatDiscoverer.TraceSource.LogInfo("GetSpecificMappingAsync - Getting mapping for protocol: {0} port: {1}", Enum.GetName(typeof(Protocol), protocol), port);
try
{
var message = new GetSpecificPortMappingEntryRequestMessage(protocol, port);
var responseData = await _soapClient
.InvokeAsync("GetSpecificPortMappingEntry", message.ToXml())
.TimeoutAfter(TimeSpan.FromSeconds(4));
var messageResponse = new GetPortMappingEntryResponseMessage(responseData, DeviceInfo.ServiceType, false);
return new Mapping(messageResponse.Protocol
, IPAddress.Parse(messageResponse.InternalClient)
, messageResponse.InternalPort
, messageResponse.ExternalPort
, messageResponse.LeaseDuration
, messageResponse.PortMappingDescription);
}
catch (MappingException e)
{
if (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.ErrorCode == UpnpConstants.InvalidArguments)
{
NatDiscoverer.TraceSource.LogWarn("Router failed with 402-InvalidArgument. Mapping not found is assumed.");
return null;
}
throw;
}
}
public override async Task<IEnumerable<Mapping>> GetAllMappingsAsync()
{
var index = 0;
var mappings = new List<Mapping>();
NatDiscoverer.TraceSource.LogInfo("GetAllMappingsAsync - Getting all mappings");
while (true)
{
try
{
var message = new GetGenericPortMappingEntry(index++);
var responseData = await _soapClient
.InvokeAsync("GetGenericPortMappingEntry", message.ToXml())
.TimeoutAfter(TimeSpan.FromSeconds(4));
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!");
continue;
}
var mapping = new Mapping(responseMessage.Protocol
, internalClientIp
, responseMessage.InternalPort
, responseMessage.ExternalPort
, responseMessage.LeaseDuration
, responseMessage.PortMappingDescription);
mappings.Add(mapping);
}
catch (MappingException e)
{
if (e.ErrorCode == UpnpConstants.SpecifiedArrayIndexInvalid
|| e.ErrorCode == UpnpConstants.NoSuchEntryInArray) break; // there are no more mappings
// 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.");
break;
}
throw;
}
}
return mappings.ToArray();
}