检测损坏的套接字 [英] Detecting a broken socket

问题描述

我正在使用TCP IP套接字。

I'm working with TCP IP Socket.

这个是检测客户端套接字连接断开的最简单方法吗？

Is THIS the simplest way to detect that a client socket connection is broken?

如果没有检测到死客户端的Java API，我会感到惊讶并抛出异常。至少当服务器尝试从缺少ACK响应向客户端发送数据包时，这应该是可能的。

I would be surprised if there is no Java API that detects a dead client and throws an exception. This should be possible at least when the server tries to send a packet to the client from the lack of an ACK response.

推荐答案

TCP协议不支持任何检测断开连接的快速方法。

TCP protocol does not support any fast means of detecting a broken connection.

这个问题（及其所有答案）全面解释了这个问题： TCP套接字连接是否具有保持活动状态？

This question (and all of it's answers) explain the problem in full: Does a TCP socket connection have a "keep alive"?

所以基本上是的，这是最简单的方法。您需要在应用程序协议中实现乒乓包（也称为HearBeat包）以正确验证连接断开。

So basically yes, that is the simplest way. You need to implement ping-pong packets (aka HearBeat packet) in your application protocol to verify the broken connection properly.

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