public void DnsResponse2()
{
byte[] sampleQuery = new byte[] { 0x00, 0x04, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77, 0x03, 0x6D, 0x73, 0x6E, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x01, 0x00, 0x01, 0xC0, 0x0C, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x02, 0x35, 0x00, 0x1E, 0x02, 0x75, 0x73, 0x03, 0x63, 0x6F, 0x31, 0x03, 0x63, 0x62, 0x33, 0x06, 0x67, 0x6C, 0x62, 0x64, 0x6E, 0x73, 0x09, 0x6D, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0xC0, 0x14, 0xC0, 0x29, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x53, 0x00, 0x04, 0x83, 0xFD, 0x0D, 0x8C };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
// Header Checks
Assert.AreEqual(0x4, query.QueryIdentifier);
Assert.AreEqual(true, query.QR);
Assert.AreEqual(0x0000, query.Opcode);
Assert.AreEqual(false, query.AA);
Assert.AreEqual(false, query.TC);
Assert.AreEqual(true, query.RD);
Assert.AreEqual(true, query.RA);
Assert.AreEqual(false, query.Zero);
Assert.AreEqual(false, query.AuthenticatingData);
Assert.AreEqual(false, query.CheckingDisabled);
Assert.AreEqual(0x0000, query.RCode);
Assert.AreEqual(0x0001, query.QuestionCount);
Assert.AreEqual(0x0002, query.AnswerCount);
Assert.AreEqual(0x0000, query.NameServerCount);
Assert.AreEqual(0x0000, query.AdditionalCount);
// Question Checks
Assert.AreEqual(query.QuestionCount, query.Questions.Count());
// Q1
Assert.AreEqual("www.msn.com", query.Questions[0].Name);
Assert.AreEqual(ResourceType.A, query.Questions[0].Type);
Assert.AreEqual(ResourceClass.IN, query.Questions[0].Class);
// dump results
query.Dump();
}
public void DnsQuery2()
{
byte[] sampleQuery = new byte[] { 0x00, 0x03, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77, 0x03, 0x6D, 0x73, 0x6E, 0x03, 0x63, 0x6F, 0x6D, 0x07, 0x72, 0x65, 0x64, 0x6D, 0x6F, 0x6E, 0x64, 0x04, 0x63, 0x6F, 0x72, 0x70, 0x09, 0x6D, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x1C, 0x00, 0x01 };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
// Header Checks
Assert.AreEqual(0x3, query.QueryIdentifier);
Assert.AreEqual(false, query.QR);
Assert.AreEqual(0x0000, query.Opcode);
Assert.AreEqual(false, query.AA);
Assert.AreEqual(false, query.TC);
Assert.AreEqual(true, query.RD);
Assert.AreEqual(false, query.RA);
Assert.AreEqual(false, query.Zero);
Assert.AreEqual(false, query.AuthenticatingData);
Assert.AreEqual(false, query.CheckingDisabled);
Assert.AreEqual(0x0000, query.RCode);
Assert.AreEqual(0x0001, query.QuestionCount);
Assert.AreEqual(0x0000, query.AnswerCount);
Assert.AreEqual(0x0000, query.NameServerCount);
Assert.AreEqual(0x0000, query.AdditionalCount);
// Question Checks
Assert.AreEqual(query.QuestionCount, query.Questions.Count());
// Q1
Assert.AreEqual("www.msn.com.redmond.corp.microsoft.com", query.Questions[0].Name);
Assert.AreEqual(ResourceType.AAAA, query.Questions[0].Type);
Assert.AreEqual(ResourceClass.IN, query.Questions[0].Class);
// dump results
query.Dump();
}
public void DnsQuery3()
{
byte[] sampleQuery = new byte[] { 0xFB, 0x65, 0x84, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x73, 0x65, 0x63, 0x75, 0x72, 0x65, 0x2D, 0x75, 0x73, 0x0C, 0x69, 0x6D, 0x72, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x77, 0x69, 0x64, 0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x1C, 0x00, 0x01 };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
// Header Checks
Assert.AreEqual(0xFB65, query.QueryIdentifier);
Assert.AreEqual(true, query.QR);
Assert.AreEqual(0x0000, query.Opcode);
Assert.AreEqual(true, query.AA);
Assert.AreEqual(false, query.TC);
Assert.AreEqual(false, query.RD);
Assert.AreEqual(false, query.RA);
Assert.AreEqual(false, query.Zero);
Assert.AreEqual(false, query.AuthenticatingData);
Assert.AreEqual(false, query.CheckingDisabled);
Assert.AreEqual(0x0000, query.RCode);
Assert.AreEqual(0x0001, query.QuestionCount);
Assert.AreEqual(0x0000, query.AnswerCount);
Assert.AreEqual(0x0000, query.NameServerCount);
Assert.AreEqual(0x0000, query.AdditionalCount);
// Question Checks
Assert.AreEqual(query.QuestionCount, query.Questions.Count());
// Q1
Assert.AreEqual("secure-us.imrworldwide.com", query.Questions[0].Name);
Assert.AreEqual(ResourceType.AAAA, query.Questions[0].Type);
Assert.AreEqual(ResourceClass.IN, query.Questions[0].Class);
// dump results
query.Dump();
}
public void DnsResponse1()
{
byte[] sampleQuery = new byte[] { 0x44, 0xFD, 0x81, 0x80, 0x00, 0x01, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77, 0x10, 0x67, 0x6F, 0x6F, 0x67, 0x6C, 0x65, 0x2D, 0x61, 0x6E, 0x61, 0x6C, 0x79, 0x74, 0x69, 0x63, 0x73, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x01, 0x00, 0x01, 0xC0, 0x0C, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x89, 0x89, 0x00, 0x20, 0x14, 0x77, 0x77, 0x77, 0x2D, 0x67, 0x6F, 0x6F, 0x67, 0x6C, 0x65, 0x2D, 0x61, 0x6E, 0x61, 0x6C, 0x79, 0x74, 0x69, 0x63, 0x73, 0x01, 0x6C, 0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C, 0x65, 0xC0, 0x21, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x25, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x21, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x28, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x29, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x20, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x2E, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x26, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x24, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x27, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x22, 0xC0, 0x36, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x19, 0x00, 0x04, 0xAD, 0xC2, 0x21, 0x23 };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
query.Dump();
}
public void DnsQuery()
{
byte[] sampleQuery = new byte[] { 0xD3, 0x03, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x64, 0x64, 0x63, 0x64, 0x73, 0x30, 0x31, 0x07, 0x72, 0x65, 0x64, 0x6D, 0x6F, 0x6E, 0x64, 0x04, 0x63, 0x6F, 0x72, 0x70, 0x09, 0x6D, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x01, 0x00, 0x01 };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
query.Dump();
}
public void TransitiveQueryTest()
{
DnsMessage message = new DnsMessage();
message.QueryIdentifier = 0xFEED;
message.QR = false;
message.Opcode = (byte)OpCode.QUERY;
message.AA = false;
message.TC = false;
message.RD = true;
message.RA = false;
message.Zero = false;
message.AuthenticatingData = false;
message.CheckingDisabled = false;
message.RCode = 0x0000;
message.QuestionCount = 1;
message.AnswerCount = 0;
message.NameServerCount = 0;
message.AdditionalCount = 0;
message.Questions = new QuestionList();
message.Questions.Add(new Question {
Name = "www.msn.com", Class = ResourceClass.IN, Type = ResourceType.A
});
DnsMessage outMessage;
using (MemoryStream stream = new MemoryStream())
{
message.WriteToStream(stream);
Assert.IsTrue(DnsMessage.TryParse(stream.GetBuffer(), out outMessage));
}
Assert.AreEqual(0xFEED, outMessage.QueryIdentifier);
Assert.IsFalse(outMessage.QR);
Assert.AreEqual((byte)OpCode.QUERY, outMessage.Opcode);
Assert.IsFalse(outMessage.AA);
Assert.IsFalse(outMessage.TC);
Assert.IsTrue(outMessage.RD);
Assert.IsFalse(outMessage.RA);
Assert.IsFalse(outMessage.Zero);
Assert.IsFalse(outMessage.AuthenticatingData);
Assert.IsFalse(outMessage.CheckingDisabled);
Assert.AreEqual(0x0000, outMessage.RCode);
Assert.AreEqual(0x0001, outMessage.QuestionCount);
Assert.AreEqual(0x0000, outMessage.AnswerCount);
Assert.AreEqual(0x0000, outMessage.NameServerCount);
Assert.AreEqual(0x0000, outMessage.AdditionalCount);
// Question Checks
Assert.AreEqual(outMessage.QuestionCount, outMessage.Questions.Count());
// Q1
Assert.AreEqual("www.msn.com", outMessage.Questions[0].Name);
Assert.AreEqual(ResourceType.A, outMessage.Questions[0].Type);
Assert.AreEqual(ResourceClass.IN, outMessage.Questions[0].Class);
}
public void DnsResponse3()
{
byte[] sampleQuery = new byte[] { 0xDD, 0x15, 0x81, 0x80, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x03, 0x61, 0x70, 0x69, 0x04, 0x62, 0x69, 0x6E, 0x67, 0x03, 0x63, 0x6F, 0x6D, 0x00, 0x00, 0x01, 0x00, 0x01, 0xC0, 0x0C, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x00, 0x83, 0x00, 0x14, 0x04, 0x61, 0x31, 0x33, 0x34, 0x02, 0x6C, 0x6D, 0x06, 0x61, 0x6B, 0x61, 0x6D, 0x61, 0x69, 0x03, 0x6E, 0x65, 0x74, 0x00, 0xC0, 0x2A, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0E, 0x00, 0x04, 0xCF, 0x6D, 0x49, 0x91, 0xC0, 0x2A, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0E, 0x00, 0x04, 0xCF, 0x6D, 0x49, 0x51 };
DnsMessage query;
Assert.IsTrue(DnsMessage.TryParse(sampleQuery, out query));
// Header Checks
Assert.AreEqual(0xDD15, query.QueryIdentifier);
Assert.AreEqual(true, query.QR);
Assert.AreEqual(0x0000, query.Opcode);
Assert.AreEqual(false, query.AA);
Assert.AreEqual(false, query.TC);
Assert.AreEqual(true, query.RD);
Assert.AreEqual(true, query.RA);
Assert.AreEqual(false, query.Zero);
Assert.AreEqual(false, query.AuthenticatingData);
Assert.AreEqual(false, query.CheckingDisabled);
Assert.AreEqual(0x0000, query.RCode);
Assert.AreEqual(0x0001, query.QuestionCount);
Assert.AreEqual(0x0003, query.AnswerCount);
Assert.AreEqual(0x0000, query.NameServerCount);
Assert.AreEqual(0x0000, query.AdditionalCount);
// Question Checks
Assert.AreEqual(query.QuestionCount, query.Questions.Count());
// Q1
Assert.AreEqual("api.bing.com", query.Questions[0].Name);
Assert.AreEqual(ResourceType.A, query.Questions[0].Type);
Assert.AreEqual(ResourceClass.IN, query.Questions[0].Class);
// Answer Checks
Assert.AreEqual(query.AnswerCount, query.Answers.Count());
// A1
Assert.AreEqual("api.bing.com", query.Answers[0].Name);
Assert.AreEqual(ResourceType.CNAME, query.Answers[0].Type);
Assert.AreEqual(ResourceClass.IN, query.Answers[0].Class);
Assert.IsTrue(query.Answers[0].TTL == 0x83);
Assert.AreEqual(0x14, query.Answers[0].DataLength);
Assert.AreEqual(typeof(CNameRData), query.Answers[0].RData.GetType());
// dump results
query.Dump();
}
public void TransitiveQueryTest2()
{
DnsMessage message = new DnsMessage();
message.QueryIdentifier = 0xFEED;
message.QR = false;
message.Opcode = (byte)OpCode.QUERY;
message.AA = false;
message.TC = false;
message.RD = true;
message.RA = false;
message.Zero = false;
message.AuthenticatingData = false;
message.CheckingDisabled = false;
message.RCode = 0x0000;
message.QuestionCount = 1;
message.AnswerCount = 2;
message.NameServerCount = 0;
message.AdditionalCount = 0;
message.Questions = new QuestionList();
message.Questions.Add(new Question {
Name = "www.msn.com", Class = ResourceClass.IN, Type = ResourceType.A
});
message.Answers.Add(new ResourceRecord {
Name = "8.8.8.8", Class = ResourceClass.IN, Type = ResourceType.NS, TTL = 468, DataLength = 0, RData = null
});
RData data = new ANameRData {
Address = IPAddress.Parse("8.8.8.9")
};
message.Answers.Add(new ResourceRecord {
Name = "8.8.8.9", Class = ResourceClass.IN, Type = ResourceType.NS, TTL = 468, RData = data, DataLength = (ushort)data.Length
});
DnsMessage outMessage;
using (MemoryStream stream = new MemoryStream())
{
message.WriteToStream(stream);
Assert.True(DnsMessage.TryParse(stream.GetBuffer(), out outMessage));
}
Assert.Equal(0xFEED, outMessage.QueryIdentifier);
Assert.False(outMessage.QR);
Assert.Equal((byte)OpCode.QUERY, outMessage.Opcode);
Assert.False(outMessage.AA);
Assert.False(outMessage.TC);
Assert.True(outMessage.RD);
Assert.False(outMessage.RA);
Assert.False(outMessage.Zero);
Assert.False(outMessage.AuthenticatingData);
Assert.False(outMessage.CheckingDisabled);
Assert.Equal(0x0000, outMessage.RCode);
Assert.Equal(0x0001, outMessage.QuestionCount);
Assert.Equal(0x0002, outMessage.AnswerCount);
Assert.Equal(0x0000, outMessage.NameServerCount);
Assert.Equal(0x0000, outMessage.AdditionalCount);
// Question Checks
Assert.Equal(outMessage.QuestionCount, outMessage.Questions.Count());
// Q1
Assert.Equal("www.msn.com", outMessage.Questions[0].Name);
Assert.Equal(ResourceType.A, outMessage.Questions[0].Type);
Assert.Equal(ResourceClass.IN, outMessage.Questions[0].Class);
Assert.Equal(outMessage.AnswerCount, outMessage.Answers.Count());
Assert.Equal(outMessage.AnswerCount, outMessage.Answers.Count());
Assert.Equal("8.8.8.8", outMessage.Answers[0].Name);
Assert.Equal("8.8.8.9", outMessage.Answers[1].Name);
}