Request to http://localhost:port

[chapov]

Win32NT 10.0.19041.0 Microsoft Windows NT 10.0.19041.0
wsl2
Ubuntu 18.04
Linux version 4.19.128-microsoft-standard (oe-user@oe-host) (gcc version 8.2.0 (GCC)) #1 SMP Tue Jun 23 12:58:10 UTC 2020

i run in wsl - docker and app nodejs.
all in good, port 5508 is listening, http://localhost:5508 is open:

I am saving the js script. nodemon restart my nodejs application.

port 5508 is down! http://localhost:5508 not connected.
netstat -aon with cmd shows that the port is not listening

Started yesterday

why? :)

[chapov]

it turns out there are no correlations between saving scripts with restarting the application.
wsl just stops responding to the localhost anywhere.

[lllama]

I am also seeing this same behaviour - I used to be able to connect to 127.0.0.1:4200 for my app but this has just stopped working.

I believe this started after installing KB4580364 and KB4580419

[lllama]

@chapov - I was able to fix this on my machine by removing WSL, doing a couple of reboots, then enabling it again. Not ideal but it's working again so 🤷

[sepbot]

You don't need to remove WSL, it stops working every now and then after reboots, rebooting again fixes it. There must be some race condition at the start.

[lllama]

Nope. Multiple reboots didn't fix this for me. Only that worked for me was removing WSL and adding it back. YMMV, obviously.

[Lite5h4dow]

disable fast boot. i had this exact issue, just disable fast startup from the control panel => power options

[csMACnz]

I want to cross-post this comment here as well:

I've been around in circles with this and haven't found a single suggestion that helped so thought I should post here what did eventually work.

My symptom was that after many requests to a port mapped through docker (wsl2 mode) traffic would just stop with connection refused, closed, reset etc errors on the ipv6 resolved local host (::1) wsl --shutdown reset the problem until more request load retriggers it again, reliably. 127.0.0.1:49153 keeps working while localhost:49153 hangs.

I ran netstat -ano | findstr :49153 (49153 being my mapped port)
I noticed there were 3 LISTENING

  TCP    0.0.0.0:49153          0.0.0.0:0              LISTENING       20304
  TCP    [::]:49153             [::]:0                 LISTENING       20304
  TCP    [::1]:49153            [::]:0                 LISTENING       22920

20304 is Docker Desktop Backend which is what is meant to be listening, and why ipv4 works.
22920 was one of the wslhost.exe (Microsoft Windows Subsystem for Linux Background Host) processes running - there are a couple.

I killed the offending process matching the id and the problem was fixed. I couldn't reproduce until i shutdown (or restart) the machine.

It is possible this is related to the Fast Startup issue, but i have this disabled according to the UI #6162.

hope that helps someone stuck on this, maybe even inspire someone on where to look for a permanent fix even?

[microsoft-github-policy-service]

This issue has been automatically closed since it has not had any activity for the past year. If you're still experiencing this issue please re-file this as a new issue or feature request.

Thank you!