使用netty4.x 编写TCP服务器关于握手问题

仍是和机顶盒通信的项目,netty编写udp的协议已经实现了完毕;

要求TCP也要来一套....我就呵呵了...写呗.

基本上流程差很少,decoder,encoder,handler几乎均可以重用的,写好后一测..吓我一大蹦

[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x2264fc80, /192.168.1.108:50671 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0xe19dd5d6, /192.168.1.108:50672 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x0c6528da, /192.168.1.108:50673 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x627a3d1b, /192.168.1.108:50674 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x38ca0152, /192.168.1.108:50675 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0xd423fe93, /192.168.1.108:50676 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x978e3190, /192.168.1.108:50677 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0xcb219784, /192.168.1.108:50678 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x205d58c1, /192.168.1.108:50679 => /192.168.1.120:5000]
2015-07-25 17:29:45
[INFO]-[Thread: nioEventLoopGroup-3-1]-[io.netty.util.internal.logging.Slf4JLogger.info()]: [id: 0x0bdcf37c, /0:0:0:0:0:0:0:0:5000] RECEIVED: [id: 0x3ba890f4, /192.168.1.108:50680 => /192.168.1.120:5000]
2015-07-25 17:29:45

服务器启动,客户端访问后,控制台瞬间打印出一大堆日志,又没有异常...客户端在进行批量链接,要不是本身写的还觉得是攻击呢.

仔细想了想好像没有地方出纰漏,开了wireshark抓了下包,如图:

server 192.168.1.120:5000

remote 192.168.1.108:50404

这是一次完整的请求,顺序依次是(3次握手->数据传输->握手关闭),关闭是服务器主动提出的的(5000->50404)发送的FIN包,很是奇怪,代码中并无主动关闭链接的地方..

检查代码发现,decoder中解码时由于"\r\n"未处理,提取协议数据时出现异常,异常呢??..由于控制台刷的太快..直接刷过了...