/// <summary>
/// Adds or Updates a Dns Cache Result to the list of entries
/// </summary>
/// <param name="Result"></param>
public void AddOrUpdate(DnsCacheResult Result)
{
// Add if the entry already exists
if (Entries.ContainsKey(Result.HostName))
{
Entries[Result.HostName] = Result;
}
else // Update entry
{
Entries.Add(Result.HostName, Result);
}
}
/// <summary>
/// Accepts responsibility for completely resolving the specified
/// <paramref name="question"/> and returning the reply.
/// </summary>
/// <param name="question">The <see cref="AK.Net.Dns.DnsQuestion"/> to
/// resolve.</param>
/// <returns>The <see cref="AK.Net.Dns.DnsReply"/> containing the answer to
/// the question.</returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown when <paramref name="question"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="AK.Net.Dns.DnsTransportException">
/// Thrown when a transport error occurs.
/// </exception>
/// <exception cref="AK.Net.Dns.DnsResolutionException">
/// Thrown when an error occurs during the resolution, such as the query
/// not being answered.
/// </exception>
public virtual DnsReply Resolve(DnsQuestion question)
{
Guard.NotNull(question, "question");
DnsReply reply;
DnsCacheResult cacheResult = this.Cache.Get(question);
if (cacheResult.Type == DnsCacheResultType.Failed)
{
reply = Resolve(CreateQuery(question));
this.Cache.Put(reply);
}
else
{
reply = cacheResult.Reply;
}
AssertIsPositiveReply(reply);
return(reply);
}
/// <summary>
/// Queries the DNS Cache for the Gamespy hosts, and verifies that the
/// IP addresses in the DNS Cache match that of the desired redirect IP
/// </summary>
public static bool VerifyDNSCache(IProgress <DnsCacheResult> Progress = null)
{
// Nothing to do here if redirects are disabled
if (!RedirectsEnabled)
{
return(false);
}
// Grab our saved hosts file IP addresses
if (RedirectMethod != RedirectMode.DnsServer)
{
// Grab hosts file base
HostsFile hFile = (RedirectMethod == RedirectMode.HostsFile)
? HostsFileSys as HostsFile
: HostsFileIcs as HostsFile;
// Fetch our saved IPAddresses
GamespyServerAddress = (hFile.HasEntry("master.gamespy.com")) ? hFile.Get("master.gamespy.com") : null;
StatsServerAddress = (hFile.HasEntry(Bf2StatsHost)) ? hFile.Get(Bf2StatsHost) : null;
}
// Flush our cache report
DnsCacheReport.Entries.Clear();
// Verify Gamespy Server IP addresses
if (GamespyServerAddress != null)
{
foreach (string address in GamespyHosts)
{
// Create new report
DnsCacheResult Result = new DnsCacheResult(address, GamespyServerAddress);
// Add the result to the report
DnsCacheReport.AddOrUpdate(Result);
// Report progress if we have a progress object
if (Progress != null)
{
Progress.Report(Result);
}
}
}
// Verify Stats Server address
if (StatsServerAddress != null)
{
// Create new report
DnsCacheResult Result = new DnsCacheResult(Bf2StatsHost, StatsServerAddress);
// Add the result to the report
DnsCacheReport.AddOrUpdate(Result);
// Report progress if we have a progress object
if (Progress != null)
{
Progress.Report(Result);
}
}
// Set internal
DnsCacheReport.LastRefresh = DateTime.Now;
return(DnsCacheReport.ErrorFree);
}
/// <summary>
/// This method ping's the gamepsy services and verifies that the HOSTS
/// file redirects are working correctly
/// </summary>
protected void VerifyDnsCache()
{
// Loop through each service
for (int i = 0; i < Services.Length; i++)
{
// Quit on cancel
if (TaskSource.IsCancellationRequested)
{
return;
}
// Make sure this service exists in the hosts file
if (i < 4 && Redirector.GamespyServerAddress == null || Redirector.StatsServerAddress == null)
{
SetStatus(i, "Skipped", Resources.question_button, "Entry not found in HOSTS file. Assumed redirect was not desired by user");
continue;
}
// Prepare for next service
SetStatus(i, "Checking, Please Wait...", Resources.loading);
// Ping server to get the IP address in the dns cache
try
{
IPAddress HostsIp = (i == 4) ? Redirector.StatsServerAddress : Redirector.GamespyServerAddress;
DnsCacheResult Result = new DnsCacheResult(Services[i], HostsIp);
// Update Gamespy Redirector Cache
Redirector.DnsCacheReport.AddOrUpdate(Result);
// Throw bad result
if (Result.IsFaulted)
{
// No such hosts is known?
if (Result.Error.InnerException != null)
{
SetStatus(i, "Error Occured", Resources.error, Result.Error.InnerException.Message);
}
else
{
SetStatus(i, "Error Occured", Resources.error, Result.Error.Message);
}
}
// Check for cancel before setting a form value
if (TaskSource.IsCancellationRequested)
{
return;
}
// Verify correct address
if (Result.GotExpectedResult)
{
SetStatus(i, HostsIp.ToString(), Resources.check);
}
else
{
SetStatus(i, Result.ResultAddresses[0].ToString(), Resources.warning, "Address expected: " + HostsIp.ToString());
}
}
catch
{
// Check for cancel before setting a form value
if (TaskSource.IsCancellationRequested)
{
return;
}
}
}
// Enable refresh btn
if (IsHandleCreated)
{
Invoke((Action) delegate { RefreshBtn.Enabled = true; });
}
}
/// <summary>
/// This method ping's the gamepsy services and verifies that the Redirect
/// services are working. This method effectivly replaces the <see cref="Redirector.VerifyDNSCache()"/>
/// method.
/// </summary>
protected bool VerifyDnsCache()
{
// Set default as success
bool DiagnosticResult = true;
// Set the System.Net DNS Cache refresh timeout to 1 millisecond
ServicePointManager.DnsRefreshTimeout = 1;
// If using System Hosts, Wait 10 seconds to allow the Windows DNS Client to catch up
if (SelectedMode == RedirectMode.HostsFile)
{
for (int i = 0; i < 10; i++)
{
// Get second count
int o = 10 - i;
// Make sure form wasn't cancelled
if (!IsHandleCreated)
{
return(false);
}
// Tell the main form thread to update the second count
Invoke((Action) delegate
{
labelDnsText.Text = "Verifying DNS Cache Settings in " + o + " seconds...";
});
// Wait one
Thread.Sleep(1000);
}
// Make sure form wasn't cancelled
if (!IsHandleCreated)
{
return(false);
}
// Fix header to display no time
Invoke((Action) delegate
{
labelDnsText.Text = "Verifying DNS Cache Settings";
});
}
// Clear Old Entries
Redirector.DnsCacheReport.Entries.Clear();
// Loop through each service
for (int i = 0; i < Services.Length; i++)
{
// Make sure this service is enabled
if ((!Bf2webCheckbox.Checked && i == 3) || (!GpcmCheckbox.Checked && i != 3))
{
SetStatus(i, "Skipped", Resources.question_button, "Redirect was not enabled by user");
continue;
}
// Prepare for next service
SetStatus(i, "Checking, Please Wait...", Resources.loading);
Thread.Sleep(300);
// Ping server to get the IP address in the dns cache
try
{
IPAddress HostsIp = (i == 3) ? StatsServerAddress : GamespyServerAddress;
DnsCacheResult Result = new DnsCacheResult(Services[i], HostsIp);
// Update Gamespy Redirector Cache
Redirector.DnsCacheReport.AddOrUpdate(Result);
// Throw bad result
if (Result.IsFaulted)
{
// No such hosts is known?
if (Result.Error.InnerException != null)
{
SetStatus(i, "Error Occured", Resources.error, Result.Error.InnerException.Message);
}
else
{
SetStatus(i, "Error Occured", Resources.error, Result.Error.Message);
}
// Flag error
DiagnosticResult = false;
continue;
}
// Verify correct address
if (!Result.GotExpectedResult)
{
SetStatus(i, Result.ResultAddresses[0].ToString(), Resources.warning, "Address expected: " + HostsIp.ToString());
// Flag error
DiagnosticResult = false;
}
else
{
SetStatus(i, HostsIp.ToString(), Resources.check);
}
}
catch (Exception e)
{
// No such hosts is known?
if (e.InnerException != null)
{
SetStatus(i, "Error Occured", Resources.error, e.InnerException.Message);
}
else
{
SetStatus(i, "Error Occured", Resources.error, e.Message);
}
// Flag error
DiagnosticResult = false;
}
}
return(DiagnosticResult);
}
