public void DnsRequestHeader_ChangeRecursion()
{
var header = new DnsRequestHeader(23, true, DnsOpCode.Notify);
Assert.Equal(8448, header.RawFlags);
header.UseRecursion = false;
Assert.False(header.UseRecursion);
Assert.Equal(8192, header.RawFlags);
header.UseRecursion = true;
Assert.True(header.UseRecursion);
Assert.Equal(8448, header.RawFlags);
header.UseRecursion = false;
Assert.False(header.UseRecursion);
Assert.Equal(8192, header.RawFlags);
header.UseRecursion = true;
Assert.True(header.UseRecursion);
Assert.Equal(8448, header.RawFlags);
Assert.Equal(23, header.Id);
Assert.Equal(DnsOpCode.Notify, header.OpCode);
}
public void DnsRequestHeader_ValidateCtor1()
{
var header = new DnsRequestHeader(DnsOpCode.Notify);
Assert.True(header.UseRecursion);
Assert.Equal(DnsOpCode.Notify, header.OpCode);
}
private DnsRequestMessage GetDnsRequestMessage(ushort headerId = 0)
{
DnsRequestHeader header = new DnsRequestHeader(headerId, true, DnsOpCode.Query);
DnsQuestion question = new DnsQuestion(mockDnsString.Object, QueryType.A, QueryClass.IN);
DnsRequestMessage message = new DnsRequestMessage(header, question);
return(message);
}
/// <summary> Constructs a DNS query request object for given domain name to resolve. </summary>
/// <param name="domainNameToResolve">Domain name to resolve. E.g. www.microsoft.com</param>
/// <returns>Dns query request object.</returns>
public DnsRequestMessage ProcessRequest(string domainNameToResolve)
{
ushort headerId = GetNextUniqueId();
DnsRequestHeader header = new DnsRequestHeader(headerId, true, DnsOpCode.Query);
DnsQuestion question = new DnsQuestion(dnsString.Parse(domainNameToResolve), QueryType.A, QueryClass.IN);
DnsRequestMessage message = new DnsRequestMessage(header, question);
return(message);
}
public void Resolve_overload_with_IPEndpoint_and_DnsRequetMessage_should_throw_DnsResponseException_when_header_ids_dont_match()
{
// Arrange.
const string domainNameToResolve = "www.A-Dummy-Domain.com";
string domainNameToResolveRoot = domainNameToResolve + ".";
const ushort headerId = 123; // because we are *only* setting this up in the request header, it should not match with the response header.
DnsRequestHeader header = new DnsRequestHeader(headerId, true, DnsOpCode.Query);
DnsQuestion question = new DnsQuestion(mockDnsString.Object, QueryType.A, QueryClass.IN);
DnsRequestMessage dnsRequestMessage = new DnsRequestMessage(header, question);
IPEndPoint dnsServerIP = new IPEndPoint(IPAddress.Parse("10.0.0.10"), dnsPort53);
mockDnsString.Setup(m => m.Value).Returns(domainNameToResolveRoot);
DnsResponseMessage responseMessage = GetDnsResponseMessage();
mockMessageProcessor.Setup(m => m.ProcessResponse(It.IsAny <ArraySegment <byte> >())).Returns(responseMessage);
IDnsResolver resolver = new DnsResolver(mockCommunicator.Object, mockMessageProcessor.Object);
// Act => Act.
Assert.Throws <DnsResponseException>(() => resolver.Resolve(dnsServerIP, dnsRequestMessage), "Header id mismatch.");
}
public DnsRequestMessage(DnsRequestHeader header, DnsQuestion question)
{
Header = header;
Question = question;
}