/// <summary>
/// Constructs an instance out of the precedence, gateway, algorithm and public key fields.
/// </summary>
/// <param name="precedence">
/// Precedence for this record.
/// Gateways listed in IPSECKEY records with lower precedence are to be attempted first.
/// Where there is a tie in precedence, the order should be non-deterministic.
/// </param>
/// <param name="gateway">
/// Indicates a gateway to which an IPsec tunnel may be created in order to reach the entity named by this
/// resource record.
/// </param>
/// <param name="algorithm">Identifies the public key's cryptographic algorithm and determines the format of the public key field.</param>
/// <param name="publicKey">Contains the algorithm-specific portion of the KEY RR RDATA.</param>
public DnsResourceDataIpSecKey(byte precedence, DnsGateway gateway, DnsPublicKeyAlgorithm algorithm, DataSegment publicKey)
{
Precedence = precedence;
Gateway = gateway;
Algorithm = algorithm;
PublicKey = 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));
}
/// <summary>
/// Two gateway representations are equal if they are of the same type and the value is the same.
/// </summary>
public override bool Equals(DnsGateway other)
{
return(Equals(other as DnsGatewayIpV4));
}
/// <summary>
/// Two gateway representations are equal if they are of the same type and the value is the same.
/// </summary>
public override bool Equals(DnsGateway other)
{
return(Equals(other as DnsGatewayDomainName));
}