/// <summary>
/// Diese Methode dient zur Anbindung der P2P Topology an die Hierarchische.
/// Es wird ein entsprechendes Paket in das hierarchische Netz gesendet.
/// </summary>
/// <param name="p2pRequest"></param>
/// <param name="username"></param>
/// <param name="kaEvent"></param>
/// <param name="writeResult">übergebe die Methode writeResult</param>
void ConnectP2P(P2PRequest p2pRequest, string username, KaEvent kaEvent, Action <Request, string> writeResult)
{
//P2P Teil
P2PPackage p2p = new P2PPackage(username, kaEvent)
{
P2Prequest = p2pRequest
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Failure, InviteFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
/// <summary>
/// Settings für P2PServer. Zugehöriigkeit WellKnownPeers usw.
/// </summary>
/// <param name="isWellKnown"></param>
public static void P2PSettings(bool isWellKnown)
{
while (CheckWellKnownPeers())
{
;
}
if (isWellKnown)
{
//Data.ServerConfig.ListofWellKnown.Add(Data.ServerConfig.host);
foreach (IPAddress ipAddress in KnownServers.ListofWellKnownPeers)
{
if (ipAddress.ToString() != ServerConfig.host.ToString())
{
Package package = new Package
{
p2p = new P2PPackage()
};
package.p2p.P2Prequest = P2PRequest.RegisterServer;
package.p2p.SetOriginIPAddress(ServerConfig.host.ToString());
Package receive = ServerLogic.Send(package, ipAddress);
//Nur hinzufügen wenn noch nicht existent
if (receive != null && !ServerConfig.neighbours.Exists(x => x.ToString() == ipAddress.ToString()))
{
ServerConfig.neighbours.Add(ipAddress);
}
}
}
}
else
{ //This only functions if we have two or more Well Known Peers
for (int i = 2; i > 0; i--) //'i' represents number of connections to create.
{
Package package = new Package
{
p2p = new P2PPackage
{
P2Prequest = P2PRequest.NewServer
},
sourceServer = ServerConfig.host.ToString()
};
package.p2p.SetOriginIPAddress(ServerConfig.host.ToString());
package = ServerLogic.Send(package, KnownServers.GetRandomWellKnownPeer());
if (package != null)
{
//2 Server mit denen ich mich verbinde und bei denen Registriere
switch (package.p2p.P2PAnswer)
{
case P2PAnswer.Error:
Console.WriteLine(package.p2p.ErrorMsg);
break;
case P2PAnswer.Failure:
Console.WriteLine(NewServerFail);
break;
default:
Package registerPackage = new Package
{
p2p = new P2PPackage
{
P2Prequest = P2PRequest.RegisterServer
},
sourceServer = ServerConfig.host.ToString()
};
registerPackage.p2p.SetOriginIPAddress(ServerConfig.host.ToString());
registerPackage = ServerLogic.Send(registerPackage, IPAddress.Parse(package.p2p.lastIP));
if (registerPackage != null)
{
switch (registerPackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
ServerConfig.neighbours.Add(IPAddress.Parse(package.p2p.lastIP));
Console.WriteLine(RegisterServerSuccess);
break;
case P2PAnswer.Visited:
break;
default:
Console.WriteLine(RegisterServerFail);
break;
}
}
else
{
Console.WriteLine(SendError);
}
break;
}
}
else
{
Console.WriteLine(SendError);
}
}
}
if (ServerConfig.neighbours.Count == 0)
{
Console.WriteLine(SetupFailed);
}
else if (ServerConfig.neighbours.Count < 2)
{
Console.WriteLine(SetupIncomplete);
}
else
{
Console.WriteLine(SetupComplete);
}
}
/// <summary>
/// Resolve Acquired Packages and trigger corresponding requests. For Client
/// </summary>
/// <param name="package"></param>
public Package ResolvePackage(Package package)
{
switch (package.request)
{
/// In case of Login Request try to login to the server database and set Request accordingly
case Request.Login:
Console.WriteLine(LoginRequest);
if (package.serverSwitched)
{
if (database.Login(package.user))
{
List <KaEvent> kaEvents;
kaEvents = database.Read(package.user.name);
package.kaEvents = kaEvents;
try
{
package.invites = database.ReadInvites(package.user.name);
}
catch (Exception ex)
{
Console.WriteLine("ReadInvites failed.\n{0}\n{1}", ex.Message, ex.StackTrace);
}
writeResult(Request.Success, LoginSuccess);
}
else
{
writeResult(Request.Failure, LoginFail);
}
}
else
{
if (ServerConfig.structure == Structure.HIERARCHY)
{
///if serverID > 0 => Hierarchy
if (package.user.serverID > 0)
{
//Hierarchie Login
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.UserLogin,
login = package.user.name,
destinationID = package.user.serverID
};
hierarchie = HierarchyLogic.ResolveHierarchie(hierarchie);
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
case HierarchieAnswer.Error:
writeResult(Request.Error, Error);
break;
default:
writeResult(Request.Failure, Error);
break;
}
}
///else => Send to P2P
else
{
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.Login
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
package.sourceServer = recievePackage.p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
default:
writeResult(Request.Failure, LoginFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
else if (ServerConfig.structure == Structure.P2P)
{
///if serverID == 0 => P2P
if (package.user.serverID == 0)
{
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.Login
};
p2p = P2PLogic.ResolveP2P(p2p);
switch (p2p.P2PAnswer)
{
case P2PAnswer.Success:
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
default:
writeResult(Request.Failure, LoginFail);
break;
}
}
///else => Send to Hierarchy
else
{
//Hierarchie Login
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.UserLogin,
login = package.user.name,
destinationID = package.user.serverID
};
//Sende Teil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, LoginFail);
break;
case HierarchieAnswer.Error:
writeResult(Request.Error, Error);
break;
default:
writeResult(Request.Failure, Error);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
break;
/// In case of Register Request try to login to the server database and set Request accordingly
case Request.Register:
Console.WriteLine(RegisterRequest);
try
{
if (package.serverSwitched)
{
if (database.RegisterUser(package.user, package.passwordConfirm))
{
writeResult(Request.Success, RegisterSuccess);
package.user.serverID = ServerConfig.serverID;
}
else
{
writeResult(Request.Failure, RegisterFail);
}
}
else
{
if (ServerConfig.structure == Structure.HIERARCHY)
{
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.RegisterUser
};
hierarchie = HierarchyLogic.ResolveHierarchie(hierarchie);
if (hierarchie.HierarchieAnswer == HierarchieAnswer.UserExistent)
{
writeResult(Request.UserExistent, UserExistent);
break;
}
//P2P Teil
//ConnectP2P(P2PRequest.NewUser, package.user.name, writeResult);
//P2P Teil
P2PPackage p2p = new P2PPackage(package.user.name)
{
P2Prequest = P2PRequest.NewUser
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
if (hierarchie.anzUser < recievePackage.p2p.anzUser)
{
package.sourceServer = hierarchie.destinationAdress;
}
else
{
package.sourceServer = recievePackage.p2p.lastIP;
}
writeResult(Request.ChangeServer, ChangeServer);
break;
///user already exists
case P2PAnswer.UserExistent:
writeResult(Request.UserExistent, UserExistent);
break;
case P2PAnswer.Error:
Console.WriteLine(recievePackage.p2p.ErrorMsg);
writeResult(Request.Error, Error);
break;
default:
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
break;
}
}
else
{
package.sourceServer = hierarchie.destinationAdress;
writeResult(Request.ChangeServer, ChangeServer);
}
}
else if (ServerConfig.structure == Structure.P2P)
{
//P2P Teil
P2PPackage p2p = new P2PPackage
{
P2Prequest = P2PRequest.NewUser
};
p2p = P2PLogic.ResolveP2P(p2p);
///user is already existent
if (p2p.P2PAnswer == P2PAnswer.Visited)
{
writeResult(Request.UserExistent, UserExistent);
break;
}
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.RegisterUser
};
//Sende Teil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (recievePackage.hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
if (p2p.anzUser < recievePackage.hierarchie.anzUser)
{
package.sourceServer = p2p.lastIP;
}
else
{
package.sourceServer = recievePackage.hierarchie.destinationAdress;
}
writeResult(Request.ChangeServer, RegisterSuccess);
break;
///user already exists
case HierarchieAnswer.UserExistent:
writeResult(Request.UserExistent, UserExistent);
break;
default:
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
break;
}
}
else
{
package.sourceServer = p2p.lastIP;
writeResult(Request.ChangeServer, ChangeServer);
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, RegisterFail);
}
break;
case Request.Save:
Console.WriteLine(SaveRequest);
try
{
database.SaveEvent(package.kaEvents[0]);
writeResult(Request.Success, SaveSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, SaveFail);
}
break;
case Request.Delete:
Console.WriteLine(DeleteRequest);
try
{
database.DeleteEvent(package.kaEvents[0].TerminID);
writeResult(Request.Success, DeleteSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, DeleteFail);
}
break;
case Request.Load:
Console.WriteLine(LoadRequest);
try
{
List <KaEvent> kaEvents;
//kaEvents = database.LoadEvents(package.user, package.kaEvents[0].Beginn);
kaEvents = database.Read(package.user.name);
package.kaEvents = kaEvents;
writeResult(Request.Success, LoadSuccess);
}
catch (Exception e)
{
Console.WriteLine(e.GetType().FullName);
Console.WriteLine(e.Message);
writeResult(Request.Failure, LoadFail);
}
break;
case Request.Test:
Console.WriteLine(TestRequest);
break;
case Request.Invite:
//Prüfung ServerID
Console.WriteLine(InviteRequest);
if (ServerConfig.structure == Structure.HIERARCHY)
{
/*
* Hier ist nur Client-Server.
* Wenn Server-Server Invite message ist, wird es bei resolveHierarchie erledigt
* Das hier sollte wenn möglich als Asynchron, bzw. nach art Fire und Forget.
* Wenn mehrere User eingetragen wird, hat der Server eine lange Anschreibezeit
* */
foreach (User member in package.kaEvents[0].members)
{
///member is user in current server
if (member.serverID == ServerConfig.serverID)
{
if (database.UserExist(member.name))
{
database.SaveInvites(member.name, package.kaEvents[0]);
writeResult(Request.Success, InviteSuccess);
}
else
{
writeResult(Request.Failure, UserNotFound);
}
}
///member is user in hierarchy topology
else if (member.serverID > 0)
{
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.Invite,
invite = package.kaEvents[0],
login = member.name,
destinationID = member.serverID
};
HierarchyLogic.ResolveHierarchie(hierarchie);
switch (hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
break;
}
}
///member is user in p2p topology
else
{
//P2P Teil
P2PPackage p2p = new P2PPackage(member.name, package.kaEvents[0])
{
P2Prequest = P2PRequest.Invite
};
//Sende Teil
Package sendPackage = new Package(p2p);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.GetRandomWellKnownPeer());
if (recievePackage != null)
{
switch (recievePackage.p2p.P2PAnswer)
{
case P2PAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Failure, InviteFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
else if (ServerConfig.structure == Structure.P2P)
{
//Logik P2P Invite
List <User> list = package.kaEvents[0].members;
foreach (User member in list)
{
///member is user in p2p topology
if (member.serverID == 0)
{
if (database.UserExist(member.name))
{
database.SaveInvites(member.name, package.kaEvents[0]);
writeResult(Request.Success, InviteSuccess);
}
else
{
P2PPackage p2p = new P2PPackage(member.name, package.kaEvents[0])
{
P2Prequest = P2PRequest.Invite
};
p2p = P2PLogic.ResolveP2P(p2p);
switch (p2p.P2PAnswer)
{
case P2PAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case P2PAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Error, Error);
break;
}
}
}
///member is user in hierarchy topology
else
{
//Hierarchie Teil
HierarchiePackage hierarchie = new HierarchiePackage
{
HierarchieRequest = HierarchieRequest.Invite,
invite = package.kaEvents[0],
login = member.name,
destinationID = member.serverID
};
//SendeTeil
Package sendPackage = new Package(hierarchie);
Package recievePackage;
recievePackage = Send(sendPackage, KnownServers.Root);
if (recievePackage != null)
{
switch (recievePackage.hierarchie.HierarchieAnswer)
{
case HierarchieAnswer.Success:
writeResult(Request.Success, InviteSuccess);
break;
case HierarchieAnswer.Failure:
writeResult(Request.Failure, InviteFail);
break;
default:
writeResult(Request.Failure, InviteFail);
break;
}
}
else
{
writeResult(Request.Error, Error);
}
}
}
}
break;
case Request.AnswerInvite:
//TODO für P2P und Hierarchisch
database.AnswerInvite(package.kaEvents[0], package.user.name, package.answerInvite);
break;
default:
Console.WriteLine(RequestUnknown);
break;
}
return(package);
void writeResult(Request request, string line)
{
Console.WriteLine(line);
package.request = request;
}
}
public void ChangeP2P()
{
ip = KnownServers.GetRandomWellKnownPeer();
}
