private void PingAllServers()
{
if (Server.AllServers.Count <= 1)
{
return;
}
for (int i = 0; i < Server.AllServers.Count; i++)
{
if (Server.AllServers[i].ID == Server.My_Identification.ID) //Avoid ping to himself
{
continue;
}
try
{
ServerService obj = (ServerService)Activator.GetObject(typeof(ServerService), Server.AllServers[i].UID.AbsoluteUri + "MyRemoteObjectName");
obj.Ping();
Console.WriteLine("ALIVE: {0}", Server.AllServers[i].UID.AbsoluteUri);
}
catch (Exception e)
{
Console.WriteLine("DEAD: {0}", Server.AllServers[i].UID.AbsoluteUri);
//Console.WriteLine(e);
}
}
}
private void NetworkStatusStateMachine()
{
bool flag = false;
switch (STATE_MACHINE_NETWORK)
{
case STATE_MACHINE_NETWORK_START:
//Console.WriteLine("IN STATE_MACHINE_NETWORK_START: BEGIN");
serversAlive.Clear();
for (int i = 0; i < Server.AllServers.Count; i++)
{
if (Server.AllServers[i].ID == Server.My_Identification.ID) //Avoid ping himself
{
continue;
}
try
{
ServerService obj = (ServerService)Activator.GetObject(typeof(ServerService), Server.AllServers[i].UID.AbsoluteUri + "MyRemoteObjectName");
//Console.WriteLine("CHECK: {0}", Server.AllServers[i].UID.AbsoluteUri);
if (obj.isRoot() == true)
{
Root_id = i; //ID of the current root node
Console.WriteLine("My old Image is: {0}\n", ServerService.getImageRepresentation()); //OLD
ServerService.setImage(obj.getImage()); //get the image of the root
STATE_MACHINE_NETWORK = STATE_MACHINE_NETWORK_KEEP_ALIVE;
flag = true;
Console.WriteLine("ROOT is {0}", Server.AllServers[i].UID.AbsoluteUri);
Console.WriteLine("My new Image is: {0}\n", ServerService.getImageRepresentation()); //NEW
break;
}
else
{
serversAlive.Add(i); //Server ID
Console.WriteLine("ALIVE: {0}", Server.AllServers[i].UID.AbsoluteUri);
}
}
catch (Exception e)
{
//Console.WriteLine("IN STATE_MACHINE_NETWORK_START: EXCEPTION");
Console.WriteLine("DEAD: {0}", Server.AllServers[i].UID.AbsoluteUri);
//Console.WriteLine(e);
}
}
//Console.WriteLine("IN STATE_MACHINE_NETWORK_START: TEST_FLAG");
if (flag == false)
{
//Console.WriteLine("FLAG==FALSE: {0}", serversAlive.Count);
if (serversAlive.Count == 0) //check if anyone is ROOT
{
//ROOT
ServerService.setRoot(true);
STATE_MACHINE_NETWORK = STATE_MACHINE_NETWORK_IM_ROOT;
}
else
{
//Console.WriteLine("MY_IDENTIFICATION: {0}, {1}", Server.My_Identification.ID, (int)serversAlive[0]);
if ((Server.My_Identification.ID - 1) < (int)serversAlive[0])
{
//ROOT
ServerService.setRoot(true);
STATE_MACHINE_NETWORK = STATE_MACHINE_NETWORK_IM_ROOT;
}
}
}
break;
case STATE_MACHINE_NETWORK_KEEP_ALIVE:
//Console.WriteLine("IN STATE_MACHINE_NETWORK_KEEP_ALIVE");
//ping root
try
{
ServerService obj = (ServerService)Activator.GetObject(typeof(ServerService), Server.AllServers[Root_id].UID.AbsoluteUri + "MyRemoteObjectName");
obj.Ping();
//Console.WriteLine("ALIVE: {0}", Server.AllServers[i].UID.AbsoluteUri);
Thread.Sleep(rand.Next(1000)); //keepalive
}
catch (Exception e)
{
STATE_MACHINE_NETWORK = STATE_MACHINE_NETWORK_START;
//Console.WriteLine("IN STATE_MACHINE_NETWORK_KEEP_ALIVE: EXCEPTION");
//Console.WriteLine("GOING TO STATE_MACHINE_NETWORK_START");
//Console.WriteLine("DEAD: {0}", Server.AllServers[i].UID.AbsoluteUri);
//Console.WriteLine(e);
}
break;
case STATE_MACHINE_NETWORK_IM_ROOT:
Console.WriteLine("ROOT SERVER");
ServerService.add("OLA"); //I'm root. I add OLA
STATE_MACHINE_NETWORK = STATE_MACHINE_NETWORK_END;
break;
case STATE_MACHINE_NETWORK_END:
break;
}
}
