"Error: Server sent FIN packet unexpectedly, closing connection."

[alasdairnmanson]

Bug Description
Thank you for this awesome tool. It does exactly what I need and yet I keep getting this error. I would appreciate any help.

Host is Dreamhost and SFTP client (Filezilla) works just fine with the same credentials, server address and port.

My Action Config

name: 🚀 Deploy bot on push

on:
  push:
    branches:
      - main
jobs:
  build-and-deploy:
    name: 🎉 Build and Deploy Website
    runs-on: ubuntu-latest

    steps:
      - name: 🚚 Get latest code
        uses: actions/checkout@v4

      - name: 📂 Sync files via FTP
        uses: SamKirkland/FTP-Deploy-Action@v4.3.5
        with:
          server: pdx1-shared-a1-29.dreamhost.com
          protocol: ftps
          port: 22
          log-level: verbose
          username: ${{ secrets.FTP_USERNAME }}
          password: ${{ secrets.FTP_PASSWORD }}
          server-dir: /home/${{ secrets.FTP_USERNAME }}/alasdairmanson.org/
          timeout: 200000

My Action Log

Run SamKirkland/FTP-Deploy-Action@v4.3.5
----------------------------------------------------------------
🚀 Thanks for using ftp-deploy. Let's deploy some stuff!   
----------------------------------------------------------------
If you found this project helpful, please support it
by giving it a ⭐ on Github --> https://github.com/SamKirkland/FTP-Deploy-Action
or add a badge 🏷️ to your projects readme --> https://github.com/SamKirkland/FTP-Deploy-Action#badge
Using the following excludes filters: ["**/.git*","**/.git*/**","**/node_modules/**"]
Creating local state at ./.ftp-deploy-sync-state.json
Local state created
Connected to 69.163.177.234:22 (No encryption)
< SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.13

> QUIT
Failed to connect, are you sure your server works via FTP or FTPS? Users sometimes get this error when the server only supports SFTP.

----------------------------------------------------------------
--------------  🔥🔥🔥 an error occurred  🔥🔥🔥  --------------
----------------------------------------------------------------

----------------------------------------------------------------
----------------------  full error below  ----------------------
----------------------------------------------------------------

Error: Server sent FIN packet unexpectedly, closing connection.
    at Socket.<anonymous> (/home/runner/work/_actions/SamKirkland/FTP-Deploy-Action/v4.3.5/dist/index.js:5109:56)
    at Socket.emit (node:events:536:35)
    at endReadableNT (node:internal/streams/readable:1698:[12](https://github.com/alasdairnmanson/alasdairmanson.org/actions/runs/14724039425/job/41322979370#step:3:13))
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
Error: Error: Server sent FIN packet unexpectedly, closing connection.

[alasdairnmanson]

hey @SamKirkland

i wanted to try to work this out on my own, or at least isolate it. i tried a bunch of other ftp deployers and they all failed until this one: https://github.com/sand4rt/ftp-deployer

it allows me to specify "passive: true" and i think that's the difference?

[MariusStuparu]

@alasdairnmanson It seems you moved on to another solution, but using port 22 for FTPS is strange - that is an SSH port, it works with SFTP connections. For FTPS you need port 21 - it worked for me, however I'm not on Dreamhost.

[nekonenene]

Hi @alasdairnmanson 👋

I struggled with the exact same issue—everything worked perfectly with FileZilla, but when running from GitHub Actions, it just wouldn’t connect. After a lot of digging, I discovered that my hosting provider had a setting to block access from foreign IP addresses. Once I disabled that restriction, FTP-Deploy-Action worked from GitHub Actions without any problems.

You might want to check if your hosting provider has a similar IP restriction in place. It could be worth looking into! 🚀