t-io作为目前国内最流行的开源网络编程框架软件，以简单易懂，上手容易而著称，相同的功能比起netty实现起来，要简单的多，代码量也大大减少，如果要使用好t-io，还是要先学习t-io的一些基本知识，这篇文章主要从8个方面介绍了t-io的基础知识。具体请参考：

t-io收发消息过程

t-io收发消息及处理过程，可以用一张图清晰地表达出来

应用层包：Packet

Packet是用于表述业务数据结构的，我们通过继承 Packet来实现自己的业务数据结构，对于各位而言，把Packet看作是一个普通的VO对象即可。

注意：不建议直接使用Packet对象，而是要 继承Packet

一个简单的Packet可能长这样

package org . tio . study . helloworld . common ;
import org . tio . core . intf . Packet ;
/**
* @author tanyaowu
*/
public class HelloPacket extends Packet {
private static final long serialVersionUID = - 172060606924066412L ;
public static final int HEADER_LENGTH = 4 ; //消息头的长度
public static final String CHARSET = "utf-8" ;
private byte [] body ;
/**
* @return the body
*/
public byte [] getBody () {
return body ;
}
/**
* @param body the body to set
*/
public void setBody ( byte [] body ) {
this . body = body ;
}
}

可以结合AioHandler.java理解Packet

package org . tio . core . intf ;
import java . nio . ByteBuffer ;
import org . tio . core . ChannelContext ;
import org . tio . core . TioConfig ;
import org . tio . core . exception . AioDecodeException ;
/**
*
* @author tanyaowu
* 2017年10月19日上午9:40:15
*/
public interface AioHandler {
/**
* 根据ByteBuffer解码成业务需要的Packet对象.
* 如果收到的数据不全，导致解码失败，请返回null，在下次消息来时框架层会自动续上前面的收到的数据
* @param buffer 参与本次希望解码的ByteBuffer
* @param limit ByteBuffer的limit
* @param position ByteBuffer的position，不一定是0哦
* @param readableLength ByteBuffer参与本次解码的有效数据（= limit - position）
* @param channelContext
* @return
* @throws AioDecodeException
*/
Packet decode ( ByteBuffer buffer , int limit , int position , int readableLength , ChannelContext channelContext ) throws AioDecodeException ;
/**
* 编码
* @param packet
* @param tioConfig
* @param channelContext
* @return
* @author: tanyaowu
*/
ByteBuffer encode ( Packet packet , TioConfig tioConfig , ChannelContext channelContext );
/**
* 处理消息包
* @param packet
* @param channelContext
* @throws Exception
* @author: tanyaowu
*/
void handler ( Packet packet , ChannelContext channelContext ) throws Exception ;
}

单条TCP连接上下文：ChannelContext

每一个tcp连接的建立都会产生一个ChannelContext对象，这是个抽象类，如果你是用t-io作tcp客户端，那么就是ClientChannelContext，如果你是用tio作tcp服务器，那么就是ServerChannelContext

用户可以把业务数据通过ChannelContext对象和TCP连接关联起来，像下面这样设置属性

ChannelContext.set(String key, Object value)

然后用下面的方式获取属性

ChannelContext.get(String key)

当然最最常用的还是用t-io提供的强到没对手的bind功能，譬如用下面的代码绑定userid

Tio.bindUser(ChannelContext channelContext, String userid)

然后可以通过userid进行操作，示范代码如下

//获取某用户的ChannelContext集合SetWithLock<ChannelContext> set = Tio.getChannelContextsByUserid(tioConfig, userid);//给某用户发消息Tio.sendToUser(TioConfig, userid, Packet)

除了可以绑定userid，t-io还内置了如下绑定API

绑定业务id

Tio.bindBsId(ChannelContext channelContext, String bsId)

绑定token

Tio.bindToken(ChannelContext channelContext, String token)

绑定群组

Tio.bindGroup(ChannelContext channelContext, String group)

ChannelContext对象包含的信息非常多，主要对象见下图

说明

ChannelContext是t-io中非常重要的类，他是业务和连接的沟通桥梁！

服务配置与维护：TioConfig

场景：我们在写TCP Server时，都会先选好一个端口以监听客户端连接，再创建N组线程池来执行相关的任务，譬如发送消息、解码数据包、处理数据包等任务，还要维护客户端连接的各种数据，为了和业务互动，还要把这些客户端连接和各种业务数据绑定起来，譬如把某个客户端绑定到一个群组，绑定到一个userid，绑定到一个token等。
TioConfig就是解决以上场景的：配置线程池、监听端口，维护客户端各种数据等的。
TioConfig是个抽象类
- 如果你是用tio作tcp客户端，那么你需要创建ClientTioConfig对象
  - 服务器端对应一个ClientTioConfig对象
- 如果你是用tio作tcp服务器，那么你需要创建ServerTioConfig
  - 一个监听端口对应一个ServerTioConfig ，一个jvm可以监听多个端口，所以一个jvm可以有多个ServerTioConfig对象
TioConfig对象包含的信息非常多，主要对象见下图

如何获取TioConfig对象

见：如何获取TioConfig对象

编码、解码、处理：AioHandler

AioHandler是处理消息的核心接口，它有两个子接口，ClientAioHandler和ServerAioHandler，当用tio作tcp客户端时需要实现ClientAioHandler，当用tio作tcp服务器时需要实现ServerAioHandler，它主要定义了3个方法，见下

package org . tio . core . intf ;
import java . nio . ByteBuffer ;
import org . tio . core . ChannelContext ;
import org . tio . core . TioConfig ;
import org . tio . core . exception . AioDecodeException ;
/**
*
* @author tanyaowu
* 2017年10月19日上午9:40:15
*/
public interface AioHandler {
/**
* 根据ByteBuffer解码成业务需要的Packet对象.
* 如果收到的数据不全，导致解码失败，请返回null，在下次消息来时框架层会自动续上前面的收到的数据
* @param buffer 参与本次希望解码的ByteBuffer
* @param limit ByteBuffer的limit
* @param position ByteBuffer的position，不一定是0哦
* @param readableLength ByteBuffer参与本次解码的有效数据（= limit - position）
* @param channelContext
* @return
* @throws AioDecodeException
*/
Packet decode ( ByteBuffer buffer , int limit , int position , int readableLength , ChannelContext channelContext ) throws AioDecodeException ;
/**
* 编码
* @param packet
* @param tioConfig
* @param channelContext
* @return
* @author: tanyaowu
*/
ByteBuffer encode ( Packet packet , TioConfig tioConfig , ChannelContext channelContext );
/**
* 处理消息包
* @param packet
* @param channelContext
* @throws Exception
* @author: tanyaowu
*/
void handler ( Packet packet , ChannelContext channelContext ) throws Exception ;
}

消息来往监听：AioListener

AioListener是处理消息的核心接口，它有两个子接口：ClientAioListener和ServerAioListener

当用tio作tcp客户端时需要实现ClientAioListener
当用tio作tcp服务器时需要实现ServerAioListener

它主要定义了如下方法

package org . tio . core . intf ;
import org . tio . core . ChannelContext ;
/**
*
* @author tanyaowu
* 2017年4月1日上午9:34:08
*/
public interface AioListener {
/**
* 建链后触发本方法，注：建链不一定成功，需要关注参数isConnected
* @param channelContext
* @param isConnected 是否连接成功,true:表示连接成功，false:表示连接失败
* @param isReconnect 是否是重连, true: 表示这是重新连接，false: 表示这是第一次连接
* @throws Exception
* @author: tanyaowu
*/
public void onAfterConnected ( ChannelContext channelContext , boolean isConnected , boolean isReconnect ) throws Exception ;
/**
* 原方法名：onAfterDecoded
* 解码成功后触发本方法
* @param channelContext
* @param packet
* @param packetSize
* @throws Exception
* @author: tanyaowu
*/
public void onAfterDecoded ( ChannelContext channelContext , Packet packet , int packetSize ) throws Exception ;
/**
* 接收到TCP层传过来的数据后
* @param channelContext
* @param receivedBytes 本次接收了多少字节
* @throws Exception
*/
public void onAfterReceivedBytes ( ChannelContext channelContext , int receivedBytes ) throws Exception ;
/**
* 消息包发送之后触发本方法
* @param channelContext
* @param packet
* @param isSentSuccess true:发送成功，false:发送失败
* @throws Exception
* @author tanyaowu
*/
public void onAfterSent ( ChannelContext channelContext , Packet packet , boolean isSentSuccess ) throws Exception ;
/**
* 处理一个消息包后
* @param channelContext
* @param packet
* @param cost 本次处理消息耗时，单位：毫秒
* @throws Exception
*/
public void onAfterHandled ( ChannelContext channelContext , Packet packet , long cost ) throws Exception ;
/**
* 连接关闭前触发本方法
* @param channelContext the channelcontext
* @param throwable the throwable 有可能为空
* @param remark the remark 有可能为空
* @param isRemove
* @author tanyaowu
* @throws Exception
*/
public void onBeforeClose ( ChannelContext channelContext , Throwable throwable , String remark , boolean isRemove ) throws Exception ;
/**
* 连接关闭前后触发本方法
* 警告：走到这个里面时，很多绑定的业务都已经解绑了，所以这个方法一般是空着不实现的
* @param channelContext the channelcontext
* @param throwable the throwable 有可能为空
* @param remark the remark 有可能为空
* @param isRemove 是否是删除
* @throws Exception
* @author: tanyaowu
*/
// public void onAfterClose(ChannelContext channelContext, Throwable throwable, String remark, boolean isRemove) throws Exception;
}

服务器端入口：TioServer

这个对象大家稍微了解一下即可，服务器启动时会用到这个对象，简单贴一下它的源代码吧，大家只需要关注它有一个start()方法是用来启动网络服务的即可

package org . tio . server ;
import java . io . IOException ;
import java . lang . management . ManagementFactory ;
import java . lang . management . RuntimeMXBean ;
import java . net . InetSocketAddress ;
import java . net . StandardSocketOptions ;
import java . nio . channels . AsynchronousChannelGroup ;
import java . nio . channels . AsynchronousServerSocketChannel ;
import java . util . ArrayList ;
import java . util . Date ;
import java . util . List ;
import java . util . concurrent . TimeUnit ;
import org . slf4j . Logger ;
import org . slf4j . LoggerFactory ;
import org . tio . core . Node ;
import org . tio . utils . SysConst ;
import org . tio . utils . date . DateUtils ;
import org . tio . utils . hutool . StrUtil ;
/**
* @author tanyaowu
*
*/
public class TioServer {
private static Logger log = LoggerFactory . getLogger ( TioServer . class );
private ServerTioConfig serverTioConfig ;
private AsynchronousServerSocketChannel serverSocketChannel ;
private AsynchronousChannelGroup channelGroup = null ;
private Node serverNode ;
private boolean isWaitingStop = false ;
/**
*
* @param serverTioConfig
*
* @author tanyaowu
* 2017年1月2日下午5:53:06
*
*/
public TioServer ( ServerTioConfig serverTioConfig ) {
super ();
this . serverTioConfig = serverTioConfig ;
}
/**
* @return the serverTioConfig
*/
public ServerTioConfig getServerTioConfig () {
return serverTioConfig ;
}
/**
* @return the serverNode
*/
public Node getServerNode () {
return serverNode ;
}
/**
* @return the serverSocketChannel
*/
public AsynchronousServerSocketChannel getServerSocketChannel () {
return serverSocketChannel ;
}
/**
* @return the isWaitingStop
*/
public boolean isWaitingStop () {
return isWaitingStop ;
}
/**
* @param serverTioConfig the serverTioConfig to set
*/
public void setServerTioConfig ( ServerTioConfig serverTioConfig ) {
this . serverTioConfig = serverTioConfig ;
}
/**
* @param isWaitingStop the isWaitingStop to set
*/
public void setWaitingStop ( boolean isWaitingStop ) {
this . isWaitingStop = isWaitingStop ;
}
public void start ( String serverIp , int serverPort ) throws IOException {
long start = System . currentTimeMillis ();
this . serverNode = new Node ( serverIp , serverPort );
channelGroup = AsynchronousChannelGroup . withThreadPool ( serverTioConfig . groupExecutor );
serverSocketChannel = AsynchronousServerSocketChannel . open ( channelGroup );
serverSocketChannel . setOption ( StandardSocketOptions . SO_REUSEADDR , true );
serverSocketChannel . setOption ( StandardSocketOptions . SO_RCVBUF , 64 * 1024 );
InetSocketAddress listenAddress = null ;
if ( StrUtil . isBlank ( serverIp )) {
listenAddress = new InetSocketAddress ( serverPort );
} else {
listenAddress = new InetSocketAddress ( serverIp , serverPort );
}
serverSocketChannel . bind ( listenAddress , 0 );
AcceptCompletionHandler acceptCompletionHandler = serverTioConfig . getAcceptCompletionHandler ();
serverSocketChannel . accept ( this , acceptCompletionHandler );
serverTioConfig . startTime = System . currentTimeMillis ();
//下面这段代码有点无聊，写得随意，纯粹是为了打印好看些
String baseStr = "|----------------------------------------------------------------------------------------|" ;
int baseLen = baseStr . length ();
StackTraceElement [] ses = Thread . currentThread (). getStackTrace ();
StackTraceElement se = ses [ ses . length - 1 ];
int xxLen = 18 ;
int aaLen = baseLen - 3 ;
List < String > infoList = new ArrayList <>();
infoList . add ( StrUtil . fillAfter ( "Tio gitee address" , ' ' , xxLen ) + "| " + SysConst . TIO_URL_GITEE );
infoList . add ( StrUtil . fillAfter ( "Tio site address" , ' ' , xxLen ) + "| " + SysConst . TIO_URL_SITE );
infoList . add ( StrUtil . fillAfter ( "Tio version" , ' ' , xxLen ) + "| " + SysConst . TIO_CORE_VERSION );
infoList . add ( StrUtil . fillAfter ( "-" , '-' , aaLen ));
infoList . add ( StrUtil . fillAfter ( "TioConfig name" , ' ' , xxLen ) + "| " + serverTioConfig . getName ());
infoList . add ( StrUtil . fillAfter ( "Started at" , ' ' , xxLen ) + "| " + DateUtils . formatDateTime ( new Date ()));
infoList . add ( StrUtil . fillAfter ( "Listen on" , ' ' , xxLen ) + "| " + this . serverNode );
infoList . add ( StrUtil . fillAfter ( "Main Class" , ' ' , xxLen ) + "| " + se . getClassName ());
try {
RuntimeMXBean runtimeMxBean = ManagementFactory . getRuntimeMXBean ();
String runtimeName = runtimeMxBean . getName ();
String pid = runtimeName . split ( "@" )[ 0 ];
long startTime = runtimeMxBean . getStartTime ();
long startCost = System . currentTimeMillis () - startTime ;
infoList . add ( StrUtil . fillAfter ( "Jvm start time" , ' ' , xxLen ) + "| " + startCost + " ms" );
infoList . add ( StrUtil . fillAfter ( "Tio start time" , ' ' , xxLen ) + "| " + ( System . currentTimeMillis () - start ) + " ms" );
infoList . add ( StrUtil . fillAfter ( "Pid" , ' ' , xxLen ) + "| " + pid );
} catch ( Exception e ) {
}
//100
String printStr = "\r\n" + baseStr + "\r\n" ;
// printStr += "|--" + leftStr + " " + info + " " + rightStr + "--|\r\n";
for ( String string : infoList ) {
printStr += "| " + StrUtil . fillAfter ( string , ' ' , aaLen ) + "|\r\n" ;
}
printStr += baseStr + "\r\n" ;
if ( log . isInfoEnabled ()) {
log . info ( printStr );
} else {
System . out . println ( printStr );
}
}
/**
*
* @return
* @author tanyaowu
*/
public boolean stop () {
isWaitingStop = true ;
boolean ret = true ;
try {
channelGroup . shutdownNow ();
} catch ( Exception e ) {
log . error ( "channelGroup.shutdownNow()时报错" , e );
}
try {
serverSocketChannel . close ();
} catch ( Exception e1 ) {
log . error ( "serverSocketChannel.close()时报错" , e1 );
}
try {
serverTioConfig . groupExecutor . shutdown ();
} catch ( Exception e1 ) {
log . error ( e1 . toString (), e1 );
}
try {
serverTioConfig . tioExecutor . shutdown ();
} catch ( Exception e1 ) {
log . error ( e1 . toString (), e1 );
}
serverTioConfig . setStopped ( true );
try {
ret = ret && serverTioConfig . groupExecutor . awaitTermination ( 6000 , TimeUnit . SECONDS );
ret = ret && serverTioConfig . tioExecutor . awaitTermination ( 6000 , TimeUnit . SECONDS );
} catch ( InterruptedException e ) {
log . error ( e . getLocalizedMessage (), e );
}
log . info ( this . serverNode + " stopped" );
return ret ;
}
}

客户端入口：TioClient

只有当你在用t-io作为TCP客户端时，才用得到TioClient，此处简单贴一下它的源代码，它的用法，见后面的showcase示范工程

package org . tio . client ;
import java . io . IOException ;
import java . net . InetSocketAddress ;
import java . net . StandardSocketOptions ;
import java . nio . channels . AsynchronousChannelGroup ;
import java . nio . channels . AsynchronousSocketChannel ;
import java . util . Set ;
import java . util . concurrent . CountDownLatch ;
import java . util . concurrent . LinkedBlockingQueue ;
import java . util . concurrent . TimeUnit ;
import java . util . concurrent . locks . ReentrantReadWriteLock ;
import java . util . concurrent . locks . ReentrantReadWriteLock . ReadLock ;
import java . util . concurrent . locks . ReentrantReadWriteLock . WriteLock ;
import org . slf4j . Logger ;
import org . slf4j . LoggerFactory ;
import org . tio . client . intf . ClientAioHandler ;
import org . tio . core . ChannelContext ;
import org . tio . core . Node ;
import org . tio . core . Tio ;
import org . tio . core . intf . Packet ;
import org . tio . core . ssl . SslFacadeContext ;
import org . tio . core . stat . ChannelStat ;
import org . tio . utils . SystemTimer ;
import org . tio . utils . hutool . StrUtil ;
import org . tio . utils . lock . SetWithLock ;
/**
*
* @author tanyaowu
* 2017年4月1日上午9:29:58
*/
public class TioClient {
/**
* 自动重连任务
* @author tanyaowu
*
*/
private static class ReconnRunnable implements Runnable {
ClientChannelContext channelContext = null ;
TioClient tioClient = null ;
// private static Map<Node, Long> cacheMap = new HashMap<>();
public ReconnRunnable ( ClientChannelContext channelContext , TioClient tioClient ) {
this . channelContext = channelContext ;
this . tioClient = tioClient ;
}
/**
* @see java.lang.Runnable#run()
*
* @author tanyaowu
* 2017年2月2日下午8:24:40
*
*/
@Override
public void run () {
ReentrantReadWriteLock closeLock = channelContext . closeLock ;
WriteLock writeLock = closeLock . writeLock ();
writeLock . lock ();
try {
if (! channelContext . isClosed ) //已经连上了，不需要再重连了
{
return ;
}
long start = SystemTimer . currTime ;
tioClient . reconnect ( channelContext , 2 );
long end = SystemTimer . currTime ;
long iv = end - start ;
if ( iv >= 100 ) {
log . error ( "{},重连耗时:{} ms" , channelContext , iv );
} else {
log . info ( "{},重连耗时:{} ms" , channelContext , iv );
}
if ( channelContext . isClosed ) {
channelContext . setReconnCount ( channelContext . getReconnCount () + 1 );
// cacheMap.put(channelContext.getServerNode(), SystemTimer.currTime);
return ;
}
} catch ( java . lang . Throwable e ) {
log . error ( e . toString (), e );
} finally {
writeLock . unlock ();
}
}
}
private static Logger log = LoggerFactory . getLogger ( TioClient . class );
private AsynchronousChannelGroup channelGroup ;
private ClientTioConfig clientTioConfig ;
/**
* @param serverIp 可以为空
* @param serverPort
* @param aioDecoder
* @param aioEncoder
* @param aioHandler
*
* @author tanyaowu
* @throws IOException
*
*/
public TioClient ( final ClientTioConfig clientTioConfig ) throws IOException {
super ();
this . clientTioConfig = clientTioConfig ;
this . channelGroup = AsynchronousChannelGroup . withThreadPool ( clientTioConfig . groupExecutor );
startHeartbeatTask ();
startReconnTask ();
}
/**
*
* @param serverNode
* @throws Exception
*
* @author tanyaowu
*
*/
public void asynConnect ( Node serverNode ) throws Exception {
asynConnect ( serverNode , null );
}
/**
*
* @param serverNode
* @param timeout
* @throws Exception
*
* @author tanyaowu
*
*/
public void asynConnect ( Node serverNode , Integer timeout ) throws Exception {
asynConnect ( serverNode , null , null , timeout );
}
/**
*
* @param serverNode
* @param bindIp
* @param bindPort
* @param timeout
* @throws Exception
*
* @author tanyaowu
*
*/
public void asynConnect ( Node serverNode , String bindIp , Integer bindPort , Integer timeout ) throws Exception {
connect ( serverNode , bindIp , bindPort , null , timeout , false );
}
/**
*
* @param serverNode
* @return
* @throws Exception
*
* @author tanyaowu
*
*/
public ClientChannelContext connect ( Node serverNode ) throws Exception {
return connect ( serverNode , null );
}
/**
*
* @param serverNode
* @param timeout
* @return
* @throws Exception
* @author tanyaowu
*/
public ClientChannelContext connect ( Node serverNode , Integer timeout ) throws Exception {
return connect ( serverNode , null , 0 , timeout );
}
/**
*
* @param serverNode
* @param bindIp
* @param bindPort
* @param initClientChannelContext
* @param timeout 超时时间，单位秒
* @return
* @throws Exception
* @author tanyaowu
*/
public ClientChannelContext connect ( Node serverNode , String bindIp , Integer bindPort , ClientChannelContext initClientChannelContext , Integer timeout ) throws Exception {
return connect ( serverNode , bindIp , bindPort , initClientChannelContext , timeout , true );
}
/**
*
* @param serverNode
* @param bindIp
* @param bindPort
* @param initClientChannelContext
* @param timeout 超时时间，单位秒
* @param isSyn true: 同步, false: 异步
* @return
* @throws Exception
* @author tanyaowu
*/
private ClientChannelContext connect ( Node serverNode , String bindIp , Integer bindPort , ClientChannelContext initClientChannelContext , Integer timeout , boolean isSyn )
throws Exception {
AsynchronousSocketChannel asynchronousSocketChannel = null ;
ClientChannelContext channelContext = null ;
boolean isReconnect = initClientChannelContext != null ;
// ClientAioListener clientAioListener = clientTioConfig.getClientAioListener();
long start = SystemTimer . currTime ;
asynchronousSocketChannel = AsynchronousSocketChannel . open ( channelGroup );
long end = SystemTimer . currTime ;
long iv = end - start ;
if ( iv >= 100 ) {
log . error ( "{}, open 耗时:{} ms" , channelContext , iv );
}
asynchronousSocketChannel . setOption ( StandardSocketOptions . TCP_NODELAY , true );
asynchronousSocketChannel . setOption ( StandardSocketOptions . SO_REUSEADDR , true );
asynchronousSocketChannel . setOption ( StandardSocketOptions . SO_KEEPALIVE , true );
InetSocketAddress bind = null ;
if ( bindPort != null && bindPort > 0 ) {
if ( false == StrUtil . isBlank ( bindIp )) {
bind = new InetSocketAddress ( bindIp , bindPort );
} else {
bind = new InetSocketAddress ( bindPort );
}
}
if ( bind != null ) {
asynchronousSocketChannel . bind ( bind );
}
channelContext = initClientChannelContext ;
start = SystemTimer . currTime ;
InetSocketAddress inetSocketAddress = new InetSocketAddress ( serverNode . getIp (), serverNode . getPort ());
ConnectionCompletionVo attachment = new ConnectionCompletionVo ( channelContext , this , isReconnect , asynchronousSocketChannel , serverNode , bindIp , bindPort );
if ( isSyn ) {
Integer realTimeout = timeout ;
if ( realTimeout == null ) {
realTimeout = 5 ;
}
CountDownLatch countDownLatch = new CountDownLatch ( 1 );
attachment . setCountDownLatch ( countDownLatch );
asynchronousSocketChannel . connect ( inetSocketAddress , attachment , clientTioConfig . getConnectionCompletionHandler ());
boolean f = countDownLatch . await ( realTimeout , TimeUnit . SECONDS );
if ( f ) {
return attachment . getChannelContext ();
} else {
log . error ( "countDownLatch.await(realTimeout, TimeUnit.SECONDS) 返回false " );
return attachment . getChannelContext ();
}
} else {
asynchronousSocketChannel . connect ( inetSocketAddress , attachment , clientTioConfig . getConnectionCompletionHandler ());
return null ;
}
}
/**
*
* @param serverNode
* @param bindIp
* @param bindPort
* @param timeout 超时时间，单位秒
* @return
* @throws Exception
*
* @author tanyaowu
*
*/
public ClientChannelContext connect ( Node serverNode , String bindIp , Integer bindPort , Integer timeout ) throws Exception {
return connect ( serverNode , bindIp , bindPort , null , timeout );
}
/**
* @return the channelGroup
*/
public AsynchronousChannelGroup getChannelGroup () {
return channelGroup ;
}
/**
* @return the clientTioConfig
*/
public ClientTioConfig getClientTioConfig () {
return clientTioConfig ;
}
/**
*
* @param channelContext
* @param timeout
* @return
* @throws Exception
*
* @author tanyaowu
*
*/
public void reconnect ( ClientChannelContext channelContext , Integer timeout ) throws Exception {
connect ( channelContext . getServerNode (), channelContext . getBindIp (), channelContext . getBindPort (), channelContext , timeout );
}
/**
* @param clientTioConfig the clientTioConfig to set
*/
public void setClientTioConfig ( ClientTioConfig clientTioConfig ) {
this . clientTioConfig = clientTioConfig ;
}
/**
* 定时任务：发心跳
* @author tanyaowu
*
*/
private void startHeartbeatTask () {
final ClientGroupStat clientGroupStat = ( ClientGroupStat ) clientTioConfig . groupStat ;
final ClientAioHandler aioHandler = clientTioConfig . getClientAioHandler ();
final String id = clientTioConfig . getId ();
new Thread ( new Runnable () {
@Override
public void run () {
while (! clientTioConfig . isStopped ()) {
// final long heartbeatTimeout = clientTioConfig.heartbeatTimeout;
if ( clientTioConfig . heartbeatTimeout <= 0 ) {
log . warn ( "用户取消了框架层面的心跳定时发送功能，请用户自己去完成心跳机制" );
break ;
}
SetWithLock < ChannelContext > setWithLock = clientTioConfig . connecteds ;
ReadLock readLock = setWithLock . readLock ();
readLock . lock ();
try {
Set < ChannelContext > set = setWithLock . getObj ();
long currtime = SystemTimer . currTime ;
for ( ChannelContext entry : set ) {
ClientChannelContext channelContext = ( ClientChannelContext ) entry ;
if ( channelContext . isClosed || channelContext . isRemoved ) {
continue ;
}
ChannelStat stat = channelContext . stat ;
long compareTime = Math . max ( stat . latestTimeOfReceivedByte , stat . latestTimeOfSentPacket );
long interval = currtime - compareTime ;
if ( interval >= clientTioConfig . heartbeatTimeout / 2 ) {
Packet packet = aioHandler . heartbeatPacket ( channelContext );
if ( packet != null ) {
if ( log . isInfoEnabled ()) {
log . info ( "{}发送心跳包" , channelContext . toString ());
}
Tio . send ( channelContext , packet );
}
}
}
if ( log . isInfoEnabled ()) {
log . info ( "[{}]: curr:{}, closed:{}, received:({}p)({}b), handled:{}, sent:({}p)({}b)" , id , set . size (), clientGroupStat . closed . get (),
clientGroupStat . receivedPackets . get (), clientGroupStat . receivedBytes . get (), clientGroupStat . handledPackets . get (),
clientGroupStat . sentPackets . get (), clientGroupStat . sentBytes . get ());
}
} catch ( Throwable e ) {
log . error ( "" , e );
} finally {
try {
readLock . unlock ();
Thread . sleep ( clientTioConfig . heartbeatTimeout / 4 );
} catch ( Throwable e ) {
log . error ( e . toString (), e );
} finally {
}
}
}
}
}, "tio-timer-heartbeat" + id ). start ();
}
/**
* 启动重连任务
*
*
* @author tanyaowu
*
*/
private void startReconnTask () {
final ReconnConf reconnConf = clientTioConfig . getReconnConf ();
if ( reconnConf == null || reconnConf . getInterval () <= 0 ) {
return ;
}
final String id = clientTioConfig . getId ();
Thread thread = new Thread ( new Runnable () {
@Override
public void run () {
while (! clientTioConfig . isStopped ()) {
//log.info("准备重连");
LinkedBlockingQueue < ChannelContext > queue = reconnConf . getQueue ();
ClientChannelContext channelContext = null ;
try {
channelContext = ( ClientChannelContext ) queue . take ();
} catch ( InterruptedException e1 ) {
log . error ( e1 . toString (), e1 );
}
if ( channelContext == null ) {
continue ;
// return;
}
if ( channelContext . isRemoved ) //已经删除的，不需要重新再连
{
continue ;
}
SslFacadeContext sslFacadeContext = channelContext . sslFacadeContext ;
if ( sslFacadeContext != null ) {
sslFacadeContext . setHandshakeCompleted ( false );
}
long sleeptime = reconnConf . getInterval () - ( SystemTimer . currTime - channelContext . stat . timeInReconnQueue );
//log.info("sleeptime:{}, closetime:{}", sleeptime, timeInReconnQueue);
if ( sleeptime > 0 ) {
try {
Thread . sleep ( sleeptime );
} catch ( InterruptedException e ) {
log . error ( e . toString (), e );
}
}
if ( channelContext . isRemoved || ! channelContext . isClosed ) //已经删除的和已经连上的，不需要重新再连
{
continue ;
}
ReconnRunnable runnable = new ReconnRunnable ( channelContext , TioClient . this );
reconnConf . getThreadPoolExecutor (). execute ( runnable );
}
}
});
thread . setName ( "tio-timer-reconnect-" + id );
thread . setDaemon ( true );
thread . start ();
}
/**
*
* @return
* @author tanyaowu
*/
public boolean stop () {
boolean ret = true ;
try {
clientTioConfig . groupExecutor . shutdown ();
} catch ( Exception e1 ) {
log . error ( e1 . toString (), e1 );
}
try {
clientTioConfig . tioExecutor . shutdown ();
} catch ( Exception e1 ) {
log . error ( e1 . toString (), e1 );
}
clientTioConfig . setStopped ( true );
try {
ret = ret && clientTioConfig . groupExecutor . awaitTermination ( 6000 , TimeUnit . SECONDS );
ret = ret && clientTioConfig . tioExecutor . awaitTermination ( 6000 , TimeUnit . SECONDS );
} catch ( InterruptedException e ) {
log . error ( e . getLocalizedMessage (), e );
}
log . info ( "client resource has released" );
return ret ;
}
}

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