/** * Connect by tcp. * * @param host the host * @param port the port * @return the t conn */ public static synchronized TConn connectByTcp(String host, int port, long timeout) { TimeStamp t = TimeStamp.create(); try { if (tcpconnector == null) { tcpconnector = new TDCConnector(); } tcpconnector.connector.setConnectTimeoutMillis(timeout); ConnectFuture connFuture = tcpconnector.connector.connect(new InetSocketAddress(host, port)); connFuture.awaitUninterruptibly(timeout); IoSession session = connFuture.getSession(); TConn c = new TConn(session); session.setAttribute("conn", c); return c; } catch (Exception e) { log.error( "error, [" + host + ":" + port + "], cost: " + t.past() + "ms, timeout=" + timeout, e); } return null; }