public static void NameResolutionOption_ConvertToByte_Test(bool reorder)
{
NameResolutionOption preOption = new NameResolutionOption();
NameResolutionOption postOption;
preOption.Comment = "Test Comment";
preOption.DnsName = "Dns Name";
preOption.DnsIp4Addr = new IPAddress(new byte[] { 127, 0, 0, 1 });
preOption.DnsIp6Addr = new IPAddress(new byte[] { 0x20, 0x01, 0x0d, 0x0db, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x14, 0x28, 0x57, 0xab });
byte[] preOptionByte = preOption.ConvertToByte(reorder, null);
using (MemoryStream stream = new MemoryStream(preOptionByte))
{
using (BinaryReader binaryReader = new BinaryReader(stream))
{
postOption = NameResolutionOption.Parse(binaryReader, reorder, null);
}
}
Assert.IsNotNull(postOption);
Assert.AreEqual(preOption.Comment, postOption.Comment);
Assert.AreEqual(preOption.DnsName, postOption.DnsName);
Assert.AreEqual(preOption.DnsIp4Addr, postOption.DnsIp4Addr);
Assert.AreEqual(preOption.DnsIp6Addr, postOption.DnsIp6Addr);
}
public static NameResolutionOption Parse(BinaryReader binaryReader, bool reverseByteOrder, Action <Exception> ActionOnException)
{
CustomContract.Requires <ArgumentNullException>(binaryReader != null, "binaryReader cannot be null");
NameResolutionOption option = new NameResolutionOption();
List <KeyValuePair <ushort, byte[]> > optionsList = EkstractOptions(binaryReader, reverseByteOrder, ActionOnException);
if (optionsList.Any())
{
foreach (var item in optionsList)
{
try
{
switch (item.Key)
{
case (ushort)NameResolutionOptionCode.CommentCode:
option.Comment = UTF8Encoding.UTF8.GetString(item.Value);
break;
case (ushort)NameResolutionOptionCode.DnsNameCode:
option.DnsName = UTF8Encoding.UTF8.GetString(item.Value);
break;
case (ushort)NameResolutionOptionCode.DnsIp4AddrCode:
if (item.Value.Length == 4)
{
option.DnsIp4Addr = new IPAddress(item.Value);
}
else
{
throw new ArgumentException(string.Format("[NameResolutionOption.Parse] DnsIp4AddrCode contains invalid length. Received: {0} bytes, expected: {1}", item.Value.Length, 4));
}
break;
case (ushort)NameResolutionOptionCode.DnsIp6AddrCode:
if (item.Value.Length == 16)
{
option.DnsIp6Addr = new IPAddress(item.Value);
}
else
{
throw new ArgumentException(string.Format("[NameResolutionOption.Parse] DnsIp6AddrCode contains invalid length. Received: {0} bytes, expected: {1}", item.Value.Length, 16));
}
break;
case (ushort)NameResolutionOptionCode.EndOfOptionsCode:
default:
break;
}
}
catch (Exception exc)
{
if (ActionOnException != null)
{
ActionOnException(exc);
}
}
}
}
return(option);
}
