public bool Activate()
{
// bootstrap search from routing
foreach (DhtContact contact in Network.Routing.Find(TargetID, 8))
{
Add(contact);
}
List <TcpConnect> sockets = null;
// if open send search to proxied nodes just for good measure, probably helps on very small networks
if (Core.Firewall == FirewallType.Open)
{
sockets = Network.TcpControl.ProxyClients;
}
// if natted send request to proxies for fresh nodes
if (Core.Firewall == FirewallType.NAT)
{
sockets = Network.TcpControl.ProxyServers;
}
if (sockets != null)
{
foreach (TcpConnect socket in sockets)
{
DhtContact contact = new DhtContact(socket, socket.RemoteIP);
Network.Searches.SendRequest(contact, TargetID, SearchID, Service, DataType, Parameters);
DhtLookup host = Add(socket.GetContact());
if (host != null)
{
host.Status = LookupStatus.Searching;
}
}
}
// if blocked send proxy search request to 1 proxy, record and wait
if (Core.Firewall == FirewallType.Blocked && !Network.UseLookupProxies)
{
// pick random proxy server
if (Network.TcpControl.ProxyServers.Count == 0)
{
return(false);
}
ProxyTcp = Network.TcpControl.ProxyServers[Core.RndGen.Next(Network.TcpControl.ProxyServers.Count)];
Send_ProxySearchRequest();
}
return(true);
}
public DhtLookup Add(DhtContact contact)
{
DhtLookup added = null;
if (contact.UserID == Network.Local.UserID && contact.ClientID == Network.Local.ClientID)
{
return(null);
}
if (Finished) // search over
{
return(null);
}
// go through lookup list, add if closer to target
foreach (DhtLookup lookup in LookupList)
{
if (contact.UserID == lookup.Contact.UserID && contact.ClientID == lookup.Contact.ClientID)
{
return(lookup);
}
if ((contact.UserID ^ TargetID) < (lookup.Contact.UserID ^ TargetID))
{
added = new DhtLookup(contact);
LookupList.Insert(LookupList.IndexOf(lookup), added);
break;
}
}
if (added == null)
{
added = new DhtLookup(contact);
LookupList.Add(added);
}
while (LookupList.Count > LOOKUP_SIZE)
{
LookupList.RemoveAt(LookupList.Count - 1);
}
// at end so we ensure this node is put into list and sent with proxy results
if (Service == Core.DhtServiceID && contact.UserID == TargetID)
{
Found(contact, false);
}
return(added);
}
public DhtLookup Add(DhtContact contact)
{
DhtLookup added = null;
if (contact.UserID == Network.Local.UserID && contact.ClientID == Network.Local.ClientID)
return null;
if(Finished) // search over
return null;
// go through lookup list, add if closer to target
foreach(DhtLookup lookup in LookupList)
{
if(contact.UserID == lookup.Contact.UserID && contact.ClientID == lookup.Contact.ClientID)
return lookup;
if((contact.UserID ^ TargetID) < (lookup.Contact.UserID ^ TargetID))
{
added = new DhtLookup(contact);
LookupList.Insert(LookupList.IndexOf(lookup), added);
break;
}
}
if (added == null)
{
added = new DhtLookup(contact);
LookupList.Add(added);
}
while (LookupList.Count > LOOKUP_SIZE)
LookupList.RemoveAt(LookupList.Count - 1);
// at end so we ensure this node is put into list and sent with proxy results
if (Service == Core.DhtServiceID && contact.UserID == TargetID)
Found(contact, false);
return added;
}
