/// <summary>
/// Performs the update of the Client's version. It queries an available server for
/// the latest version and if a new version exists it goes on with the update.
/// </summary>
private void UpdateClient()
{
try
{
while (!InternetUtils.ConnectedToInternet())
{
Thread.Sleep(updateBackoff.Next());
}
//proxy = WebServiceProxy.Instance();
proxy = CrawlWaveServerProxy.Instance(globals);
string latest = String.Empty;
SerializedException sx = proxy.SendLatestVersion(globals.Client_Info, out latest);
if (sx != null)
{
globals.SystemLog.LogError("CrawlWave Client Scheduler failed to retrieve the latest version of the Client:" + sx.Message);
return;
}
Version latestVersion = new Version(latest);
if (GetClientVersion() < latestVersion)
{
//we must update the client. First of all download the update.
updating = true;
byte [] buffer = new byte[0];
sx = proxy.SendUpdatedVersion(globals.Client_Info, latest, out buffer);
if (sx != null || buffer.Length == 0)
{
globals.SystemLog.LogError("CrawlWave Client Scheduler failed to retrieve the latest version of the Client: " + sx.Message);
updating = false;
return;
}
//save the compressed file to disk. If necessary launch the installer.
string updateFileName = globals.AppPath + latest + ".zip";
FileStream outputStream = new FileStream(updateFileName, FileMode.Create);
outputStream.Write(buffer, 0, buffer.Length);
outputStream.Close();
string mustLaunchInstaller = ExtractUpdatedFiles(updateFileName);
if (mustLaunchInstaller != String.Empty)
{
//Launch Installer and exit
Process.Start(mustLaunchInstaller);
}
}
}
catch
{}
finally
{
updating = false;
}
}
private Globals globals; //Provides access to the global variables and application settings
#endregion
#region Constructor and Singleton Instance Members
/// <summary>
/// The constructor is private so that only the class itself can create an instance.
/// </summary>
private HostBanFilter()
{
//Initialize the storage for the banned host entries
hostTable = new Hashtable();
//Get a reference to the global variables and application settings
globals = Globals.Instance();
//Initialize the list of banned hosts
//proxy = WebServiceProxy.Instance();
proxy = CrawlWaveServerProxy.Instance(globals);
InitializeBannedHosts();
}
