public bool IncomingBuddy(Kademlia.KadContact contact, Mpd.Generic.UInt128 buddyID)
{
uint nContactIP = (uint)IPAddress.NetworkToHostOrder(contact.IPAddress);
//If eMule already knows this client, abort this.. It could cause conflicts.
//Although the odds of this happening is very small, it could still happen.
if (FindClientByIP(nContactIP, contact.TCPPort) != null)
{
return(false);
}
else if (IsKadFirewallCheckIP(nContactIP))
{ // doing a kad firewall check with this IP, abort
return(false);
}
else if (MuleApplication.Instance.ServerConnect.LocalIP == nContactIP &&
MuleApplication.Instance.Preference.Port == contact.TCPPort)
{
return(false); // don't connect ourself
}
//Add client to the lists to be processed.
UpDownClient pNewClient = MuleApplication.Instance.CoreObjectManager.CreateUpDownClient(0,
contact.TCPPort, contact.IPAddress, 0, 0, false);
pNewClient.KadPort = contact.UDPPort;
pNewClient.KadState = KadStateEnum.KS_INCOMING_BUDDY;
pNewClient.UserHash = contact.ClientID.Bytes;
pNewClient.BuddyID = buddyID.Bytes;
AddToKadList(pNewClient);
AddClient(pNewClient);
return(true);
}
public void RequestBuddy(Kademlia.KadContact contact, byte byConnectOptions)
{
uint nContactIP = (uint)IPAddress.NetworkToHostOrder(contact.IPAddress);
// don't connect ourself
if (MuleApplication.Instance.ServerConnect.LocalIP == nContactIP &&
MuleApplication.Instance.Preference.Port == contact.TCPPort)
{
return;
}
UpDownClient pNewClient = FindClientByIP(nContactIP, contact.TCPPort);
if (pNewClient == null)
{
pNewClient =
MuleApplication.Instance.CoreObjectManager.CreateUpDownClient(0,
contact.TCPPort, contact.IPAddress, 0, 0, false);
}
else if (pNewClient.KadState != KadStateEnum.KS_NONE)
{
return; // already busy with this client in some way (probably fw stuff), don't mess with it
}
else if (IsKadFirewallCheckIP(nContactIP))
{ // doing a kad firewall check with this IP, abort
return;
}
//Add client to the lists to be processed.
pNewClient.KadPort = contact.UDPPort;
pNewClient.KadState = KadStateEnum.KS_QUEUED_BUDDY;
pNewClient.UserHash = contact.ClientID.Bytes;
pNewClient.SetConnectOptions(byConnectOptions, true, false);
AddToKadList(pNewClient);
//This method checks if this is a dup already.
AddClient(pNewClient);
}
public bool DoRequestFirewallCheckUDP(Kademlia.KadContact contact)
{
// first make sure we don't know this IP already from somewhere
if (FindClientByIP((uint)IPAddress.NetworkToHostOrder(contact.IPAddress)) != null)
{
return(false);
}
// fine, justcreate the client object, set the state and wait
// TODO: We don't know the clients usershash, this means we cannot build an obfuscated connection, which
// again mean that the whole check won't work on "Require Obfuscation" setting, which is not a huge problem,
// but certainly not nice. Only somewhat acceptable way to solve this is to use the KadID instead.
UpDownClient pNewClient =
MuleApplication.Instance.CoreObjectManager.CreateUpDownClient(0,
contact.TCPPort, contact.IPAddress, 0, 0, false);
pNewClient.KadState = KadStateEnum.KS_QUEUED_FWCHECK_UDP;
AddToKadList(pNewClient);
AddClient(pNewClient);
return(true);
}
