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AirDC++ Web Client Docker image

Docker image running AirDC++ Webclient software. You must have proper knowledge of Docker to use this image.

Run the application

docker volume create --name airdcpp-volume
docker run -d --name airdcpp-container \
    -p 80:5600 -p 443:5601 \
    -p 21248:21248 -p 21248:21248/udp -p 21249:21249 \
    -e PUID=$(id -u) \
    -e PGID=$(id -g) \
    -v airdcpp-volume:/.airdcpp \
    -v $HOME/Downloads:/Downloads \
    -v $HOME/Share:/Share \
    gangefors/airdcpp-webclient

The web UI will be available on http://localhost and https://localhost. HTTPS is using self-signed certs, see Enable HTTPS for more details.

If you want to access the Web UI on any other port, just update the -p option in the command, e.g -p 8081:5600 to bind to port 8081 instead. See Exposed Ports for more details.

Username / password for the default admin account is: admin / password

PUID / PGID environment variables are only available using the latest tag and versions later than 2.11.0. Older images will not be rebuilt.

Command Explanation

docker volume create --name airdcpp-volume

This command creates a named volume that will store the application settings.

Run the volume create command only once.

docker run -d --name airdcpp-container \
    -p 80:5600 -p 443:5601 \
    -p 21248:21248 -p 21248:21248/udp -p 21249:21249 \
    -e PUID=$(id -u) \
    -e PGID=$(id -g) \
    -v airdcpp-volume:/.airdcpp \
    -v $HOME/Downloads:/Downloads \
    -v $HOME/Share:/Share \
    gangefors/airdcpp-webclient

This command starts a container using the default settings built into the image, binding the application to port 80/443 (default http/https ports) so it's readily available on http://localhost and https://localhost.

The container is started as root but the application within will be running as the user running the docker command. This is necessary to make the files written by the application to be owned by your local user even outside the container.

It will also mount "Downloads" and "Share" from you home directory. Change these according to your personal setup.

Environment variables

If you run the container as root you need to set the PUID/PGID variables. Example: -e PUID=1000 -e PGID=1000. All files written by the application will be owned by this user and group. Use UMASK to change the permissions of the files.

  • PUID

    Application runs as this user id. Usually you want this to be your local user id. Must be >= 101.

  • PGID

    Application runs as this group id. Usually you want this to be your local user's group id. Must be >= 101.

The reason for the >= 101 limitation is that the image already contains accounts and groups with IDs lower than that. Use --user if you need to use IDs lower than 101.

  • UMASK

    Changes how the application writes its files. Defaults to 0022. Read more on the umask man page.

Run container as non-root

You can also start the container as a non-root user. This is another way of telling the application which user you want it to run as.

Add --user $(id -u):$(id -g) to the docker run command and the container will start as the user that runs the command.

docker run -d --name airdcpp-container \
    -p 80:5600 -p 443:5601 \
    -p 21248:21248 -p 21248:21248/udp -p 21249:21249 \
    --user $(id -u):$(id -g) \
    -v airdcpp-volume:/.airdcpp \
    -v $HOME/Downloads:/Downloads \
    -v $HOME/Share:/Share \
    gangefors/airdcpp-webclient

You can also put in specific IDs if you want to run as a different user than the current user. E.g. if you need to use an ID that is lower than the ones supported by PUID/PGID (but not 0). Make sure that the mounts and the files therein are owned and writable by the user, otherwise the container will fail to start.

Run container with Podman

This feature is available since label 2.11.2-podman. The suffix is only used by v2.11.2.

You can start a container using Podman. Make sure that the mounts and the files therein are owned and writable by the user, otherwise the container will fail to start.

Podman users should run the container as root (uid=0). I.e. don't add --user or PUID/PGID.

podman run -d --name airdcpp-container \
    -p 80:5600 -p 443:5601 \
    -p 21248:21248 -p 21248:21248/udp -p 21249:21249 \
    -v airdcpp-volume:/.airdcpp \
    -v $HOME/Downloads:/Downloads \
    -v $HOME/Share:/Share \
    gangefors/airdcpp-webclient

docker-compose

There is a docker-compose file available to set up the application as a service on a docker host. Just run the following.

docker-compose up -d

Compose variables

You can configure some aspects of the application when using docker-compose by setting these environment variables before running docker-compose up -d.

  • PUID

    Application runs as this user id. Defaults to 1000. Usually you want this to be your local user id. Must be >= 101.

  • PGID

    Application runs as this group id. Defaults to 1000. Usually you want this to be your local user's group id. Must be >= 101.

  • UMASK

    Changes how the application writes its files. Defaults to 0022. Read more on the umask man page.

  • DL_DIR

    Host path mounted to /Downloads in the container. Defaults to $HOME/Downloads.

  • SHARE_DIR

    Host path mounted to /Share in the container. Defaults to $HOME/Share.

  • HTTP_PORT

    Published HTTP port. Defaults to 80.

  • HTTPS_PORT

    Published HTTPS port. Defaults to 443.

  • TCP_PORT

    Published TCP port for incoming connections. Defaults to 21248. If this is changed you have to change it in the application settings as well.

  • UDP_PORT

    Published UDP port for incoming connections. Defaults to 21248. If this is changed you have to change it in the application settings as well.

  • TLS_PORT

    Published TLS port for incoming connections. Defaults to 21249. If this is changed you have to change it in the application settings as well.

Volumes

  • /.airdcpp

    This volume stores the application settings.

    On launch it will be populated with default settings unless the folder already contains the DCPlusPlus.xml configuration file.

  • /Downloads

    This is the default Download folder, but you can change this in the settings through the web UI.

  • /Share

    This is the default share folder.

    Any bind mounted folder under this will automatically be added to your Share.

Exposed Ports

  • 5600 HTTP port

  • 5601 HTTPS port

  • 21248 TCP and UDP port for incoming connections. You have to publish this on the same port number otherwise clients will not be able to connect.

  • 21249 TCP port for incoming encrypted connections. You have to publish this on the same port number otherwise clients will not be able to connect.

If you want to use other ports for incoming connections you can change them under Settings>Connectivity>Advanced>Ports in the web UI.

The incoming connection ports are used to enable active mode. This allows you to connect to all peers in a hub, including the ones in passive mode.

Read more about connectivity modes in the official FAQ.

Add/modify admin users

To add/modify administrative users, run the following commands. Admin users can then add normal users in the web UI under Settings > System > Users.

docker stop airdcpp-container
docker run --rm -it --volumes-from airdcpp-container \
    -e PUID=$(id -u) -e PGID=$(id -g) \
    gangefors/airdcpp-webclient --add-user
docker start airdcpp-container

You must stop the webclient application container before running the --add-user command. If you add a user while it's running, the configuration will be overwritten when the application shuts down.

Upgrade

  • Pull the latest image.
  • Stop and remove the container.
  • Start a new container with the same command you started the old one.

Example:

docker pull gangefors/docker-airdcpp-webclient
docker stop airdcpp-container
docker rm airdcpp-container
docker run -d --name airdcpp-container \
    -p 80:5600 -p 443:5601 \
    -p 21248:21248 -p 21248:21248/udp -p 21249:21249 \
    -e PUID=$(id -u) \
    -e PGID=$(id -g) \
    -v airdcpp-volume:/.airdcpp \
    -v $HOME/Downloads:/Downloads \
    -v $HOME/Share:/Share \
    gangefors/airdcpp-webclient

Enable HTTPS

The image comes with self-signed certificates so you should be able to use HTTPS out of the box. But if you want to generate your own certificates here's how you do it.

The container must be running.

docker exec -it airdcpp-container openssl req \
    -subj "/C=US/ST=State/L=City/O=/CN=localhost" \
    -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /.airdcpp/Certificates/client.key \
    -out /.airdcpp/Certificates/client.crt

Change the CN string to whatever the domain name or IP you are running your service on. You can also add more information in the -subj string if you want. Check this site for more information on the different fields.

Troubleshooting

File permission issues

If you get any permission issues with the config files you can solve this by running a temporary container and chowning the files through that.

docker run --rm \
  --volumes-from=airdcpp-container \
  debian:stable-slim \
  chown -R $(id -u):$(id -g) /.airdcpp

Container isn't working with Podman

It might happen that the startup script doesn't correctly identify that it was podman that started the container. This can be fixed by adding container=podman environment variable when starting the container.

podman run ... -e container=podman ...

Enable entrypoint logging

To see what commands are run during startup of the container you can add the following environment variable.

  • LOG_STARTUP

    Enable verbose logging during startup. Defaults to empty string, any value will enable verbose logging.

    docker run ... -e LOG_STARTUP=1 ...

Enable communication debug logs

AirDC++ have some options for enabling communication debug logs. Just add them as normal program options after the image name.

--cdm-hub
  Print all protocol communication with hubs in the console
--cdm-client
  Print all protocol communication with other clients in the console
--cdm-web
  Print web API commands and file requests in the console

Building the Docker image

This is not needed since the images are already pushed to Docker hub.

If you want to build your own image run the following command.

docker build --no-cache --pull -t gangefors/airdcpp-webclient:latest .

The Dockerfile is set up to fetch the latest version on master branch in the airdcpp-webclient git repo.

Build a different version

To build a different version than latest supply the build-arg dl_url. Find the URL for the version you want to build at https://web-builds.airdcpp.net/stable/

export dl_url="https://web-builds.airdcpp.net/stable/airdcpp_2.7.0_webui-2.7.0_64-bit_portable.tar.gz"
docker build --no-cache --pull -t gangefors/airdcpp-webclient:2.7.0 --build-arg dl_url .