// 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); }