actor_client

actor_client

Demonstrates the OTP actor wrapper (gftp/actor) for safe concurrent FTP operations with message-based streaming.

What it does

1. Connects to an FTP server and wraps the client in an OTP actor
2. Logs in, prints working directory, and lists files
3. Uploads a file using open_stor (message-based streaming)
4. Demonstrates chunk protection: shows that control commands return DataTransferInProgress while a data channel is open
5. Downloads the file using open_retr with a process.Selector receive loop
6. Cleans up and disconnects

Running

To quickly spin up a local FTP server using Docker:

docker run -d --name gftp-test-ftp \
  -e "USERS=test|test|/home/test" \
  -e ADDRESS=127.0.0.1 \
  -e MIN_PORT=21100 \
  -e MAX_PORT=21110 \
  -p 2121:21 \
  -p 21100-21110:21100-21110 \
  delfer/alpine-ftp-server:latest

Then run the client with the appropriate environment variables:

FTP_HOST=127.0.0.1 FTP_PORT=2121 FTP_USER=test FTP_PASSWORD=test gleam run