public static NbnsRecordNBSTAT Get(IPAddress target, IPAddress localAddress, int attempts = 2, int timeout = 1000)
{
if (localAddress == null || localAddress.AddressFamily != AddressFamily.InterNetwork)
throw new Exception("invalid local address");
var request = new NbnsPacket();
request.Questions = new[] {new NbnsQuestion {Type = NbnsCodes.QTypes.NbStat}};
var responsePacket = request.Send(target, 137, localAddress, attempts, timeout);
if (responsePacket.Header.ResultCode != NbnsCodes.RCodes.NoError)
throw new CfnException(responsePacket.Header.ResultCode.GetThrowMessage());
return responsePacket.Answers.First().Record as NbnsRecordNBSTAT;
}
public static Task<NbnsRecordNB.AddressEntryRecord[]> Addresses(string hostname, Nic localAddress, int attempts = 2, int timeout = 1000)
{
if (localAddress == null || localAddress.Ip.V4.IsSupported == false || localAddress.Ip.V4.PrimaryUnicast == null)
throw new Exception("invalid local address");
var localUnicast = localAddress.Ip.V4.PrimaryUnicast;
var request = new NbnsPacket();
request.Header.RecursionDesired = true;
request.Header.Broadcast = true;
request.Questions = new[] {new NbnsQuestion {Type = NbnsCodes.QTypes.Nb, Name = hostname.ToUpper()}};
return request.SendAsync(localUnicast.Network.BroadcastAddress, 137, localUnicast.Address, attempts, timeout)
.ContinueWith(t =>
{
if (t.Exception != null)
throw t.Exception.InnerException;
NbnsPacket response = t.Result;
if (response.Header.ResultCode != NbnsCodes.RCodes.NoError)
throw new CfnException(response.Header.ResultCode.GetThrowMessage());
return ((NbnsRecordNB) (response.Answers.First().Record)).AddressEntries;
});
}
