/// <summary>
/// Construct the question reading from a DNS Server response.
/// </summary>
/// <param name="pointer">A logical pointer to the Question in byte array form.</param>
internal Question(RecordPointer pointer)
{
// extract from the pointer
domain_ = pointer.GetDomain();
dns_type_ = (DnsType)pointer.GetShort();
dns_class_ = (DnsClass)pointer.GetShort();
}
/// <summary>
/// Initializes a new instance of the <see cref="ResourceRecord"/> class by using the specified
/// pointer.
/// </summary>
/// <param name="pointer">The position in the byte array of the record.</param>
internal ResourceRecord(RecordPointer pointer) {
domain_ = pointer.GetDomain();
dns_type_ = (DnsType)pointer.GetShort();
dns_class_ = (DnsClass)pointer.GetShort();
ttl_ = pointer.GetInt();
// the next short is the record length, we only use it for unrecognised record types.
int length = pointer.GetShort();
switch(dns_type_) {
case DnsType.MX:
record_ = new MXRecord(pointer);
break;
default:
// move the pointer over this unrecognised record
pointer += length;
break;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ResourceRecord"/> class by using the specified
/// pointer.
/// </summary>
/// <param name="pointer">The position in the byte array of the record.</param>
internal ResourceRecord(RecordPointer pointer)
{
domain_ = pointer.GetDomain();
dns_type_ = (DnsType)pointer.GetShort();
dns_class_ = (DnsClass)pointer.GetShort();
ttl_ = pointer.GetInt();
// the next short is the record length, we only use it for unrecognised record types.
int length = pointer.GetShort();
switch (dns_type_)
{
case DnsType.MX:
record_ = new MXRecord(pointer);
break;
default:
// move the pointer over this unrecognised record
pointer += length;
break;
}
}
/// <summary>
/// Construct the question reading from a DNS Server response.
/// </summary>
/// <param name="pointer">A logical pointer to the Question in byte array form.</param>
internal Question(RecordPointer pointer) {
// extract from the pointer
domain_ = pointer.GetDomain();
dns_type_ = (DnsType)pointer.GetShort();
dns_class_ = (DnsClass)pointer.GetShort();
}
/// <summary>
/// Initializes a nes instance_ of the MXRecord class by using the specified pointer.
/// </summary>
/// <param name="pointer">A logical pointer to the bytes holding the record</param>
internal MXRecord(RecordPointer pointer)
{
preference_ = pointer.GetShort();
domain_name_ = pointer.GetDomain();
}