// Starts the Network Client Manager. First it connects to one of the seed nodes in order to fetch the Presence List.
// Afterwards, it starts the reconnect and keepalive threads
public static void start()
{
if (running)
{
return;
}
if (CoreConfig.preventNetworkOperations)
{
Logging.warn("Not starting NetworkClientManager thread due to preventNetworkOperations flag being set.");
return;
}
running = true;
networkClients = new List <NetworkClient>();
PeerStorage.readPeersFile();
// Now add the seed nodes to the list
foreach (string[] addr in CoreNetworkUtils.getSeedNodes(CoreConfig.isTestNet))
{
byte[] wallet_addr = null;
if (addr[1] != null)
{
wallet_addr = Base58Check.Base58CheckEncoding.DecodePlain(addr[1]);
}
PeerStorage.addPeerToPeerList(addr[0], wallet_addr, false);
}
// Connect to a random node first
bool firstSeedConnected = false;
while (firstSeedConnected == false && IxianHandler.forceShutdown == false)
{
Peer p = PeerStorage.getRandomMasterNodeAddress();
if (p != null)
{
firstSeedConnected = connectTo(p.hostname, p.walletAddress);
}
if (firstSeedConnected == false)
{
Thread.Sleep(1000);
}
}
// Start the reconnect thread
TLC = new ThreadLiveCheck();
reconnectThread = new Thread(reconnectClients);
reconnectThread.Name = "Network_Client_Manager_Reconnect";
autoReconnect = true;
reconnectThread.Start();
}
// Returns a random new potential neighbor. Returns null if no new neighbor is found.
public static Peer scanForNeighbor()
{
Peer connectToPeer = null;
// Find only masternodes
while (connectToPeer == null)
{
Thread.Sleep(10);
bool addr_valid = true;
if (getConnectedClients(true).Count() == 0)
{
PeerStorage.resetInitialConnectionCount();
}
Peer p = PeerStorage.getRandomMasterNodeAddress();
if (p == null)
{
break;
}
// Next, check if we're connecting to a self address of this node
string[] server = p.hostname.Split(':');
if (server.Length < 2)
{
break;
}
// Resolve the hostname first
string resolved_server_name = NetworkUtils.resolveHostname(server[0]);
string resolved_server_name_with_port = resolved_server_name + ":" + server[1];
// Check if we are already connected to this address
lock (networkClients)
{
foreach (NetworkClient client in networkClients)
{
if (client.getFullAddress(true).Equals(resolved_server_name_with_port, StringComparison.Ordinal))
{
// Address is already in the client list
addr_valid = false;
break;
}
}
}
// Check if node is already in the server list
string[] connectedClients = NetworkServer.getConnectedClients(true);
for (int i = 0; i < connectedClients.Length; i++)
{
if (connectedClients[i].Equals(resolved_server_name_with_port, StringComparison.Ordinal))
{
// Address is already in the client list
addr_valid = false;
break;
}
}
if (addr_valid == false)
{
continue;
}
// Check against connecting clients list as well
lock (connectingClients)
{
foreach (string client in connectingClients)
{
if (resolved_server_name_with_port.Equals(client, StringComparison.Ordinal))
{
// Address is already in the connecting client list
addr_valid = false;
break;
}
}
}
if (addr_valid == false)
{
continue;
}
if (NetworkServer.isRunning())
{
// Get all self addresses and run through them
List <string> self_addresses = CoreNetworkUtils.GetAllLocalIPAddresses();
foreach (string self_address in self_addresses)
{
// Don't connect to self
if (resolved_server_name.Equals(self_address, StringComparison.Ordinal))
{
if (server[1].Equals(string.Format("{0}", IxianHandler.publicPort), StringComparison.Ordinal))
{
addr_valid = false;
}
}
}
}
// If the address is valid, add it to the candidates
if (addr_valid)
{
connectToPeer = p;
}
}
return(connectToPeer);
}
