private Dictionary <int, Pingable> AssertAliveServers(IAsyncResult[] results, WaitHandle[] wait_handles, Pingable[] pingables)
{
Dictionary <int, Pingable> new_view = new Dictionary <int, Pingable>();
for (int i = 0; i < Pingables.Count; i++)
{
if (wait_handles[i].WaitOne(0))
{
AsyncPingDelegate del = (AsyncPingDelegate)((AsyncResult)results[i]).AsyncDelegate;
try
{
del.EndInvoke(results[i]);
new_view.Add(i, pingables[i]);
}
catch (Exception error)
{
//Do nothing, the server is really dead or is behaving badly.
//Console.WriteLine("VIEW MANAGER: A pingable is behaving weirdly, check it out");
//Console.WriteLine(error.ToString());
}
}
else
{
//Console.WriteLine("Ups");
//Server is probably alive but he just timed out or is not currently responding
//Assume that it died, he will come back eventually if he really is alive.
//When you don't use EndInvoke you simply dont get the return value.
}
}
return(new_view);
}
private IAsyncResult RemoteAsyncCallPing(Node otherNode, int term, string url)
{
AsyncPingDelegate RemoteDel = new AsyncPingDelegate(otherNode.Ping);
IAsyncResult RemAr = RemoteDel.BeginInvoke(term, url, RemoteAsyncCallBackPing, null);
return(RemAr);
}
private List <string> AssertAliveServers(Dictionary <string, KeyValuePair <IAsyncResult, WaitHandle> > responseDict)
{
List <string> new_view = new List <string>();
//Console.WriteLine("Current View: ");
foreach (var entry in responseDict)
{
if (entry.Value.Value.WaitOne(0))
{
AsyncPingDelegate del = (AsyncPingDelegate)((AsyncResult)entry.Value.Key).AsyncDelegate;
try
{
del.EndInvoke(entry.Value.Key);
//Console.WriteLine(entry.Key);
new_view.Add(entry.Key);
}
catch (Exception error)
{
//Do nothing, the server is really dead or is behaving badly.
//Console.WriteLine("VIEW MANAGER: A pingable is behaving weirdly, check it out");
//Console.WriteLine(error.ToString());
}
}
else
{
//Console.WriteLine("Ups");
//Server is probably alive but he just timed out or is not currently responding
//Assume that it died, he will come back eventually if he really is alive.
//When you don't use EndInvoke you simply dont get the return value.
}
}
return(new_view);
}
private IAsyncResult CheckAliveServer(Pingable p)
{
AsyncPingDelegate RemoteDel = new AsyncPingDelegate(p.IsAlive);
IAsyncResult RemAr = RemoteDel.BeginInvoke(null, null);
WaitHandle wait = RemAr.AsyncWaitHandle;
return(RemAr);
}
public static void RemoteAsyncCallBackPing(IAsyncResult ar)
{
AsyncPingDelegate del = (AsyncPingDelegate)((AsyncResult)ar).AsyncDelegate;
del.EndInvoke(ar);
}
