public void FIN()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[]
{
0x00, 0x50,
0xde, 0x4a,
0x36, 0x0f, 0xd2, 0x55,
0x48, 0xd6, 0xca, 0x71,
0x50, 0x11,
0x6f, 0x8c,
0x5a, 0x4c,
0x00, 0x00,
0x01, 0x23, 0x45, 0x67
}
};
tcpSegment.SourcePort.Should().Be(80);
tcpSegment.DestinationPort.Should().Be(56906);
tcpSegment.SequenceNumber.Should().Be(907006549);
tcpSegment.AcknowledgmentNumber.Should().Be(1222036081);
tcpSegment.FlagACK.Should().Be(true);
tcpSegment.FlagFIN.Should().Be(true);
tcpSegment.HeaderLength.Should().Be(5);
tcpSegment.WindowsSize.Should().Be(28556);
tcpSegment.Checksum.Should().Be(0x5a4c);
tcpSegment.UrgentPointer.Should().Be(0);
tcpSegment.Payload.Bytes.ToArray().Should().Equal(0x01, 0x23, 0x45, 0x67);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetByte(12, 0x66);
tcpSegment.HeaderLength.Should().Be(6);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.WindowsSize = 255;
tcpSegment.WindowsSize.Should().Be(255);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment[14, 2] = new Byte[] { 0x00, 0xFF };
tcpSegment.WindowsSize.Should().Be(255);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.Checksum = 3232;
tcpSegment.Checksum.Should().Be(3232);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetBytes(4, 4, new Byte[] { 0x01, 0x23, 0x45, 0x67 });
tcpSegment.SequenceNumber.Should().Be(19088743);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetBytes(16, 2, new Byte[] { 0x12, 0x34 });
tcpSegment.Checksum.Should().Be(4660);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment[18, 2] = new Byte[] { 0x12, 0x34 };
tcpSegment.UrgentPointer.Should().Be(4660);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.UrgentPointer = 3232;
tcpSegment.UrgentPointer.Should().Be(3232);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetByte(13, 0b_0000_0001);
tcpSegment.FlagFIN.Should().Be(true);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetBytes(0, 2, new Byte[] { 0x00, 0x50 });
tcpSegment.SourcePort.Should().Be(80);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SourcePort = 80;
tcpSegment.SourcePort.Should().Be(80);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment[2, 2] = new Byte[] { 0x00, 0x50 };
tcpSegment.DestinationPort.Should().Be(80);
}
public void Get()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment[8, 4] = new Byte[] { 0x01, 0x23, 0x45, 0x67 };
tcpSegment.AcknowledgmentNumber.Should().Be(19088743);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.AcknowledgmentNumber = 19088743;
tcpSegment.AcknowledgmentNumber.Should().Be(19088743);
tcpSegment[8, 4].ToArray().Should().Equal(0x01, 0x23, 0x45, 0x67);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SequenceNumber = 19088743;
tcpSegment.SequenceNumber.Should().Be(19088743);
tcpSegment.GetBytes(4, 4).ToArray().Should().Equal(0x01, 0x23, 0x45, 0x67);
}
public void Set()
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.FlagFIN = true;
tcpSegment.GetByte(13).Should().Be(0b_0000_0001);
tcpSegment.FlagFIN = false;
tcpSegment.GetByte(13).Should().Be(0b_0000_0000);
}
public void Set(Byte input)
{
var tcpSegment = new TCPSegment
{
Bytes = new Byte[32]
};
tcpSegment.SetByte(12, 0x05);
tcpSegment.HeaderLength = input;
tcpSegment.HeaderLength.Should().Be(input);
tcpSegment.GetByte(12).Should().Be((Byte)(input << 4 | (0x45 & 0x0F)));
}
private static String BuildFlags(TCPSegment tcpSegment)
{
var flagList = new List <String>();
if (tcpSegment.FlagNS)
{
flagList.Add("NS");
}
if (tcpSegment.FlagCWR)
{
flagList.Add("CWR");
}
if (tcpSegment.FlagECE)
{
flagList.Add("ECE");
}
if (tcpSegment.FlagURG)
{
flagList.Add("URG");
}
if (tcpSegment.FlagACK)
{
flagList.Add("ACK");
}
if (tcpSegment.FlagPSH)
{
flagList.Add("PSH");
}
if (tcpSegment.FlagRST)
{
flagList.Add("RST");
}
if (tcpSegment.FlagSYN)
{
flagList.Add("SYN");
}
if (tcpSegment.FlagFIN)
{
flagList.Add("FIN");
}
return(String.Join(",", flagList.ToArray()));
}
public void Display_TCPSegment()
{
var(displayer, mock) = BuildTextDisplayer();
var tcpSegment = new TCPSegment
{
Bytes = new Byte[]
{
0x00, 0x50,
0xde, 0x4a,
0x36, 0x0f, 0xd2, 0x55,
0x48, 0xd6, 0xca, 0x71,
0x50, 0x11,
0x6f, 0x8c,
0x5a, 0x4c,
0x00, 0x00,
0x01, 0x23, 0x45, 0x67
}
};
displayer.Display(tcpSegment);
mock.Verify(_ => _.WriteLine("tcp : 80 > 56906 win =28556 seq=907006549 ack=1222036081 flags=[ACK,FIN]"), Times.Once);
}
public void Display(TCPSegment tcpSegment)
{
NewLine($"tcp : {tcpSegment.SourcePort,17} > {tcpSegment.DestinationPort,-17} win ={tcpSegment.WindowsSize,-6} seq={tcpSegment.SequenceNumber,-10} ack={tcpSegment.AcknowledgmentNumber,-10} flags=[{BuildFlags(tcpSegment)}]");
}
