src/main/java/com/alipay/remoting/Connection.java
public void close() {
        if (closed.compareAndSet(false, true)) {
            try {
                if (this.getChannel() != null) {
                    this.getChannel().close().addListener(new ChannelFutureListener() {

                        @Override
                        public void operationComplete(ChannelFuture future) throws Exception {
                            if (logger.isInfoEnabled()) {
                                logger
                                    .info(
                                        "Close the connection to remote address={}, result={}, cause={}",
                                        RemotingUtil.parseRemoteAddress(Connection.this
                                            .getChannel()), future.isSuccess(), future.cause());
                            }
                        }

                    });
                }
            } catch (Exception e) {
                logger.warn("Exception caught when closing connection {}",
                    RemotingUtil.parseRemoteAddress(Connection.this.getChannel()), e);
            }
        }
    }
public void close() {
        if (closed.compareAndSet(false, true)) {
            try {
                if (this.getChannel() != null) {
                    this.getChannel().close().addListener(new ChannelFutureListener() {

                        @Override
                        public void operationComplete(ChannelFuture future) throws Exception {
                            if (logger.isInfoEnabled()) {
                                logger
                                    .info(
                                        "Close the connection to remote address={}, result={}, cause={}",
                                        RemotingUtil.parseRemoteAddress(Connection.this
                                            .getChannel()), future.isSuccess(), future.cause());
                            }
                        }

                    });
                }
            } catch (Exception e) {
                logger.warn("Exception caught when closing connection {}",
                    RemotingUtil.parseRemoteAddress(Connection.this.getChannel()), e);
            }
        }
    }
Close the connection.