The error message of port in use is not correct. Please check whether it is hard-coded.

[hw712]

In my laptop, port 8080 is in use, port 8081 is free.

When I start vuepress dev command without any further configuration, it said port 8081 is in use. I think it should be 8080, and perhaps this error message is hard-coded. Please check it.

D:\JavaScript\DemoVuePress>vuepress dev
Extracting site metadata...
Compiling

* Client █████████████████████████ compiling (0%)


× ｢serve｣:  { Error: listen EADDRINUSE 127.0.0.1:8081
    at Object._errnoException (util.js:1024:11)
    at _exceptionWithHostPort (util.js:1046:20)
    at Server.setupListenHandle [as _listen2] (net.js:1351:14)
    at listenInCluster (net.js:1392:12)
    at GetAddrInfoReqWrap.doListen [as callback] (net.js:1501:7)

  VuePress dev server listening at http://localhost:8081/

According to the vuepress documents, the default port is 8080, which is not free in my laptop, so I changed the default port to anther free port, everything is okay.

Working Environment

• Windows 7
• Node.JS 8.9.3
• VuePress 0.8.4

[meteorlxy]

Reproduced on Windows 10.

It's not hard-coded in Vuepress for sure.

Maybe related to the portfinder or webpack-serve

---update
Cannot reproduce on Ubuntu 18.04

[meteorlxy]

It could be an issue of webpack-serve on Windows.

The simplest way to repro:

vuepress dev --port=8081

As 8081 is hard-coded in webpack-server (Code link)

[ulivz]

It's indeed a bug of webpack-serve and still unresolved. see: webpack-contrib/webpack-serve#37 (comment).