windows运行正常但是linux下程序在浏览器控制台console报websocket is closed before the connection is established-优快云博客

本文探讨了WebSocket连接过程中遇到的超时问题，主要由DNS解析耗时引起。在Windows和Linux环境下，该问题可能导致浏览器控制台频繁显示WebSocket连接关闭错误。文章提供了几种解决方案，包括修改hosts文件、重写SocketWrapperBase类的getLocalName方法以及调整DNS相关配置。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

原因：

连接socket时需要通过IP获取到对应主机的域名来进行连接，此过程会相当耗时
前端有一个超时时间，导致无法在规定时间内收到服务端消息而触发超时操作

表现：

windows及linux下可不同时出现，与DNS解析的配置有关
浏览器console界面会打印大量websocket is closed 错误消息
可能伴随着刷新很慢之类的相关异常现象

解决方法：

在hosts文件中添加对应IP的反解析，如：示例IP IP ,其中IP为服务机器的内网地址，无效则自己通过堆栈在某个地方debug代码来确认
重写SocketWrapperBase类的getLocalName方法，直接返回其私有属性localAddr。此处不做赘述，存在多个类可用于重写代码，根据需要自己合理选择
修改DNS相关配置(可能还存在其他相关配置，个人没有找到方法1外的相关配置，故无法给出实际例子)

推荐：

卡顿的时候可以使用JDK自带工具进行分析

获取程序进程号

JPS

获取当前程序的堆栈

JSTACK PID > stack.log

前台报错

WebSocket connection to 'ws://127.0.0.1:8080/pms/websocket/181/vledvxj1/websocket' failed: WebSocket is closed before the connection is established.

后台报错

Caused by: java.io.IOException: Broken pipe
    at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
    at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
    at sun.nio.ch.IOUtil.write(IOUtil.java:65)
    at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)
    at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:124)
    at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
    at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:172)
    at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139)
    at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:197)
    at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41)
    at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320)
    at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:118)
    at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:256)
    at org.apache.coyote.Response.doWrite(Response.java:491)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:391)
    ... 21 more

调用堆栈：

at java.net.Inet6AddressImpl.getHostByAddr(Native Method)
   at java.net.InetAddress$2.getHostByAddr(InetAddress.java:932)
   at java.net.InetAddress.getHostFromNameService(InetAddress.java:617)
   at java.net.InetAddress.getHostName(InetAddress.java:559)
   at java.net.InetAddress.getHostName(InetAddress.java:531)
   at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.populateLocalName(NioEndpoint.java:1304)
   at org.apache.tomcat.util.net.SocketWrapperBase.getLocalName(SocketWrapperBase.java:223)
   at org.apache.coyote.AbstractProcessor.action(AbstractProcessor.java:464)
   at org.apache.coyote.Request.action(Request.java:432)
   at org.apache.catalina.connector.Request.getLocalName(Request.java:1307)
   at org.apache.catalina.connector.RequestFacade.getLocalName(RequestFacade.java:1002)
   at javax.servlet.ServletRequestWrapper.getLocalName(ServletRequestWrapper.java:336)
   at javax.servlet.ServletRequestWrapper.getLocalName(ServletRequestWrapper.java:336)
   at javax.servlet.ServletRequestWrapper.getLocalName(ServletRequestWrapper.java:336)
   at org.springframework.http.server.ServletServerHttpRequest.getLocalAddress(ServletServerHttpRequest.java:197)