Error: addMembership EINVAL when running webpack-dev-server

[gerrytan]

Running webpack-dev-server gives following error:

➜ <REDACTED> ./node_modules/.bin/webpack-dev-server
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: addMembership EINVAL
    at exports._errnoException (util.js:1018:11)
    at Socket.addMembership (dgram.js:506:11)
    at Socket.<anonymous> (/mnt/c/Users/<REDACTED>/projects/<REDACTED>/node_modules/multicast-dns/index.js:53:16)
    at emitNone (events.js:91:20)
    at Socket.emit (events.js:185:7)
    at startListening (dgram.js:121:10)
    at _handle.lookup (dgram.js:226:7)
    at _combinedTickCallback (internal/process/next_tick.js:83:11)
    at process._tickCallback (internal/process/next_tick.js:104:9)
    at Module.runMain (module.js:606:11)

I've created a sample project to reproduce: https://github.com/gerrytan/webpack-dev-server-error-on-windows-bash, see instruction in the readme

• Windows build number: 10.0.15063
• Node version: v6.11.0
• webpack-dev-server version: 2.5.0
• webpack version: 3.0.0

[stehufntdev]

Thanks for reporting the issue! Can you please collect a strace of the failing scenario so we can see where the EINVAL is coming from?

[educcjr]

I also ran into this problem

setsockopt(13, SOL_IP, IP_ADD_MEMBERSHIP, {imr_multiaddr=inet_addr("224.0.0.251"), imr_interface=inet_addr("0.0.0.0")}, 8) = -1 EINVAL (Invalid argument)

The strace output is very long, is there some specific information I should leave here?

[educcjr]

I did a little research about ID_ADD_MEMBERSHIP and found this:
imr_multiaddr contains the address of the multicast group the application wants to join or leave. It must be a valid multicast address (or setsockopt(2) fails with the error EINVAL)

So I ran netsh interface ip show joins on Windows and found that the IP setscockopt was trying to connect really exists. Ran netstat -anup on Ubuntu too and it didn't show anything.

It only happens when I try to run webpack-dev-server outside Ubuntu environment. A few days ago it was working perfectly.

[sunjoong]

Does it have any chance of being related to #1678 (comment) and https://msdn.microsoft.com/en-us/commandline/wsl/release_notes#build-16176 ?

[sunilmut]

@gerrytan - Thanks for reporting the issue and thanks @educcjr for the trace analysis. IP_ADD_MEMBERSHIP was added in Windows Insider build 16170. Just FYI that these changes are not (and won't be) available in the Creators Update build, but will be available in the Fall Creators Update release.

[sunilmut]

A few days ago it was working perfectly.

Maybe, the dependency on the 'IP_ADD_MEMBERSHIP' socket option was added recently to webpack-dev-server?

[educcjr]

@sunilmut it was a webpack-dev-server dependecy. Found here: webpack/webpack-dev-server#955 (comment). Thank you for the explanation.

[gerrytan]

@sunilmut so there's no way I can install build 16170 right now? Nevertheless I've confirmed downgrading to webpack-dev-server 2.4.5 solves the problem. Thanks for pointing out the problem code @educcjr.

[sunilmut]

@gerrytan

so there's no way I can install build 16170 right now?

Only, if you move to the Insider build program. You can also download standalone ISO's and install them if you feel like. There is no other way that I am aware of.