internal override DnsResourceData CreateInstance(DnsDatagram dns, int offsetInDns, int length)
{
if (length < 3)
{
return((DnsResourceData)null);
}
byte precedence = dns[offsetInDns];
DnsGatewayType gatewayType = (DnsGatewayType)dns[offsetInDns + 1];
DnsPublicKeyAlgorithm algorithm = (DnsPublicKeyAlgorithm)dns[offsetInDns + 2];
DnsGateway instance = DnsGateway.CreateInstance(gatewayType, dns, offsetInDns + 3, length - 3);
if (instance == null)
{
return((DnsResourceData)null);
}
DataSegment publicKey = dns.Subsegment(offsetInDns + 3 + instance.Length, length - 3 - instance.Length);
return((DnsResourceData) new DnsResourceDataIpSecKey(precedence, instance, algorithm, publicKey));
}
internal override DnsResourceData CreateInstance(DnsDatagram dns, int offsetInDns, int length)
{
if (length < ConstPartLength)
{
return(null);
}
byte precedence = dns[offsetInDns + Offset.Precedence];
DnsGatewayType gatewayType = (DnsGatewayType)dns[offsetInDns + Offset.GatewayType];
DnsPublicKeyAlgorithm algorithm = (DnsPublicKeyAlgorithm)dns[offsetInDns + Offset.Algorithm];
DnsGateway gateway = DnsGateway.CreateInstance(gatewayType, dns, offsetInDns + Offset.Gateway, length - ConstPartLength);
if (gateway == null)
{
return(null);
}
DataSegment publicKey = dns.Subsegment(offsetInDns + ConstPartLength + gateway.Length, length - ConstPartLength - gateway.Length);
return(new DnsResourceDataIpSecKey(precedence, gateway, algorithm, publicKey));
}
