/// <summary>
/// Add the given DNS information to the DNS cache.
/// </summary>
/// <param name="Domainname">The domain name.</param>
/// <param name="DNSInformation">The DNS information to add.</param>
public DNSCache Add(String Domainname,
DNSInfo DNSInformation)
{
lock (_DNSCache)
{
DNSCacheEntry CacheEntry = null;
if (!_DNSCache.TryGetValue(Domainname, out CacheEntry))
{
_DNSCache.Add(Domainname, new DNSCacheEntry(
DateTime.Now + TimeSpan.FromSeconds(DNSInformation.Answers.First().TimeToLive.TotalSeconds / 2),
DateTime.Now + DNSInformation.Answers.First().TimeToLive,
DNSInformation));
}
else
{
// ToDo: Merge of DNS responses!
_DNSCache[Domainname] = new DNSCacheEntry(
DateTime.Now + TimeSpan.FromSeconds(DNSInformation.Answers.First().TimeToLive.TotalSeconds / 2),
DateTime.Now + DNSInformation.Answers.First().TimeToLive,
DNSInformation);
}
return(this);
}
}
/// <summary>
/// Create a new DNS cache entry.
/// </summary>
/// <param name="RefreshTime">The timestamp of the last refresh.</param>
/// <param name="EndOfLife">The timestamp when this entry gets invalidated.</param>
/// <param name="DNSInfo">The cached DNS information.</param>
public DNSCacheEntry(DateTime RefreshTime,
DateTime EndOfLife,
DNSInfo DNSInfo)
{
this._RefreshTime = RefreshTime;
this._EndOfLife = EndOfLife;
this._DNSInfo = DNSInfo;
}
/// <summary>
/// Create a new DNS cache entry.
/// </summary>
/// <param name="RefreshTime">The timestamp of the last refresh.</param>
/// <param name="EndOfLife">The timestamp when this entry gets invalidated.</param>
/// <param name="DNSInfo">The cached DNS information.</param>
public DNSCacheEntry(DateTime RefreshTime,
DateTime EndOfLife,
DNSInfo DNSInfo)
{
this._RefreshTime = RefreshTime;
this._EndOfLife = EndOfLife;
this._DNSInfo = DNSInfo;
}
/// <summary>
/// Add a DNS cache entry.
/// </summary>
/// <param name="DomainName">The domain name.</param>
/// <param name="DNSInformation">The DNS information</param>
private void AddToCache(String DomainName,
DNSInfo DNSInformation)
{
if (DNSInformation.Answers != null)
{
DNSInformation.
Answers.
ForEach(ResourceRecord => _DNSCache.Add(DomainName,
DNSInformation.Origin,
ResourceRecord));
}
}
/// <summary>
/// Add the given DNS information to the DNS cache.
/// </summary>
/// <param name="Domainname">The domain name.</param>
/// <param name="DNSInformation">The DNS information to add.</param>
public DNSCache Add(String Domainname,
DNSInfo DNSInformation)
{
lock (_DNSCache)
{
DNSCacheEntry CacheEntry = null;
if (!_DNSCache.TryGetValue(Domainname, out CacheEntry))
_DNSCache.Add(Domainname, new DNSCacheEntry(
DateTime.Now + TimeSpan.FromSeconds(DNSInformation.Answers.First().TimeToLive.TotalSeconds / 2),
DateTime.Now + DNSInformation.Answers.First().TimeToLive,
DNSInformation));
else
{
// ToDo: Merge of DNS responses!
_DNSCache[Domainname] = new DNSCacheEntry(
DateTime.Now + TimeSpan.FromSeconds(DNSInformation.Answers.First().TimeToLive.TotalSeconds / 2),
DateTime.Now + DNSInformation.Answers.First().TimeToLive,
DNSInformation);
}
return this;
}
}
