rustdesk-server/README.md

<p align="center">
  <a href="#how-to-build-manually">Manually</a> •
  <a href="#docker-images">Docker</a> •
  <a href="#s6-overlay-based-images">S6-overlay</a> •
  <a href="#how-to-create-a-keypair">Keypair</a> •
  <a href="#deb-packages">Debian</a> •
  <a href="#env-variables">Variables</a><br>
  [<a href="README-DE.md">Deutsch</a>] | [<a href="README-NL.md">Nederlands</a>]<br>
</p>

# RustDesk Server Program

[![build](https://github.com/rustdesk/rustdesk-server/actions/workflows/build.yaml/badge.svg)](https://github.com/rustdesk/rustdesk-server/actions/workflows/build.yaml)

[**Download**](https://github.com/rustdesk/rustdesk-server/releases)

[**Manual**](https://rustdesk.com/docs/en/self-host/)

[**FAQ**](https://github.com/rustdesk/rustdesk/wiki/FAQ)

Self-host your own RustDesk server, it is free and open source.

## How to build manually

```bash
cargo build --release
```

Three executables will be generated in target/release.

- hbbs - RustDesk ID/Rendezvous server
- hbbr - RustDesk relay server
- rustdesk-utils - RustDesk CLI utilities

You can find updated binaries on the [releases](https://github.com/rustdesk/rustdesk-server/releases) page.

If you want extra features [RustDesk Server Pro](https://rustdesk.com/pricing.html) might suit you better.

If you want to develop your own server, [rustdesk-server-demo](https://github.com/rustdesk/rustdesk-server-demo) might be a better and simpler start for you than this repo.

## Docker images

Docker images are automatically generated and published on every github release. We have 2 kind of images.

### Classic image

These images are build against `ubuntu-20.04` with the only addition of the main binaries (`hbbr` and `hbbs`). They're available on [Docker hub](https://hub.docker.com/r/rustdesk/rustdesk-server/) with these tags:

| architecture | image:tag |
| --- | --- |
| amd64 | `rustdesk/rustdesk-server:latest` |
| arm64v8 | `rustdesk/rustdesk-server:latest-arm64v8` |

You can start these images directly with `docker run` with these commands:

```bash
docker run --name hbbs --net=host -v "$PWD/data:/root" -d rustdesk/rustdesk-server:latest hbbs -r <relay-server-ip[:port]> 
docker run --name hbbr --net=host -v "$PWD/data:/root" -d rustdesk/rustdesk-server:latest hbbr 
```

or without `--net=host`, but P2P direct connection can not work.

For systems using SELinux, replacing `/root` by `/root:z` is required for the containers to run correctly. Alternatively, SELinux container separation can be disabled completely adding the option `--security-opt label=disable`.

```bash
docker run --name hbbs -p 21115:21115 -p 21116:21116 -p 21116:21116/udp -p 21118:21118 -v "$PWD/data:/root" -d rustdesk/rustdesk-server:latest hbbs -r <relay-server-ip[:port]> 
docker run --name hbbr -p 21117:21117 -p 21119:21119 -v "$PWD/data:/root" -d rustdesk/rustdesk-server:latest hbbr 
```

The `relay-server-ip` parameter is the IP address (or dns name) of the server running these containers. The **optional** `port` parameter has to be used if you use a port different than **21117** for `hbbr`.

You can also use docker-compose, using this configuration as a template:

```yaml
version: '3'

networks:
  rustdesk-net:
    external: false

services:
  hbbs:
    container_name: hbbs
    ports:
      - 21115:21115
      - 21116:21116
      - 21116:21116/udp
      - 21118:21118
    image: rustdesk/rustdesk-server:latest
    command: hbbs -r rustdesk.example.com:21117
    volumes:
      - ./data:/root
    networks:
      - rustdesk-net
    depends_on:
      - hbbr
    restart: unless-stopped

  hbbr:
    container_name: hbbr
    ports:
      - 21117:21117
      - 21119:21119
    image: rustdesk/rustdesk-server:latest
    command: hbbr
    volumes:
      - ./data:/root
    networks:
      - rustdesk-net
    restart: unless-stopped
```

Edit line 16 to point to your relay server (the one listening on port 21117). You can also edit the volume lines (line 18 and line 33) if you need.

(docker-compose credit goes to @lukebarone and @QuiGonLeong)

## S6-overlay based images

These images are build against `busybox:stable` with the addition of the binaries (both hbbr and hbbs) and [S6-overlay](https://github.com/just-containers/s6-overlay). They're available on [Docker hub](https://hub.docker.com/r/rustdesk/rustdesk-server-s6/) with these tags:

| architecture | version | image:tag |
| --- | --- | --- |
| multiarch | latest | `rustdesk/rustdesk-server-s6:latest` |
| amd64 | latest | `rustdesk/rustdesk-server-s6:latest-amd64` |
| i386 | latest | `rustdesk/rustdesk-server-s6:latest-i386` |
| arm64v8 | latest | `rustdesk/rustdesk-server-s6:latest-arm64v8` |
| armv7 | latest | `rustdesk/rustdesk-server-s6:latest-armv7` |
| multiarch | 2 | `rustdesk/rustdesk-server-s6:2` |
| amd64 | 2 | `rustdesk/rustdesk-server-s6:2-amd64` |
| i386 | 2 | `rustdesk/rustdesk-server-s6:2-i386` |
| arm64v8 | 2 | `rustdesk/rustdesk-server-s6:2-arm64v8` |
| armv7 | 2 | `rustdesk/rustdesk-server-s6:2-armv7` |
| multiarch | 2.0.0 | `rustdesk/rustdesk-server-s6:2.0.0` |
| amd64 | 2.0.0 | `rustdesk/rustdesk-server-s6:2.0.0-amd64` |
| i386 | 2.0.0 | `rustdesk/rustdesk-server-s6:2.0.0-i386` |
| arm64v8 | 2.0.0 | `rustdesk/rustdesk-server-s6:2.0.0-arm64v8` |
| armv7 | 2.0.0 | `rustdesk/rustdesk-server-s6:2.0.0-armv7` |

You're strongly encouraged to use the `multiarch` image either with the `major version` or `latest` tag.

The S6-overlay acts as a supervisor and keeps both process running, so with this image there's no need to have two separate running containers.

You can start these images directly with `docker run` with this command:

```bash
docker run --name rustdesk-server \ 
  --net=host \
  -e "RELAY=rustdeskrelay.example.com" \
  -e "ENCRYPTED_ONLY=1" \
  -v "$PWD/data:/data" -d rustdesk/rustdesk-server-s6:latest
```

or without `--net=host`, but P2P direct connection cannot work.

```bash
docker run --name rustdesk-server \
  -p 21115:21115 -p 21116:21116 -p 21116:21116/udp \
  -p 21117:21117 -p 21118:21118 -p 21119:21119 \
  -e "RELAY=rustdeskrelay.example.com" \
  -e "ENCRYPTED_ONLY=1" \
  -v "$PWD/data:/data" -d rustdesk/rustdesk-server-s6:latest
```

Or you can use a docker-compose file:

```yaml
version: '3'

services:
  rustdesk-server:
    container_name: rustdesk-server
    ports:
      - 21115:21115
      - 21116:21116
      - 21116:21116/udp
      - 21117:21117
      - 21118:21118
      - 21119:21119
    image: rustdesk/rustdesk-server-s6:latest
    environment:
      - "RELAY=rustdesk.example.com:21117"
      - "ENCRYPTED_ONLY=1"
    volumes:
      - ./data:/data
    restart: unless-stopped
```

For this container image, you can use these environment variables, **in addition** to the ones specified in the following **ENV variables** section:

| variable | optional | description |
| --- | --- | --- |
| RELAY | no | the IP address/DNS name of the machine running this container |
| ENCRYPTED_ONLY | yes | if set to **"1"** unencrypted connection will not be accepted |
| KEY_PUB | yes | public part of the key pair |
| KEY_PRIV | yes | private part of the key pair |

### Secret management in S6-overlay based images

You can obviously keep the key pair in a docker volume, but the best practices tells you to not write the keys on the filesystem; so we provide a couple of options.

On container startup, the presence of the keypair is checked (`/data/id_ed25519.pub` and `/data/id_ed25519`) and if one of these keys doesn't exist, it's recreated from ENV variables or docker secrets.
Then the validity of the keypair is checked: if public and private keys doesn't match, the container will stop.
If you provide no keys, `hbbs` will generate one for you, and it'll place it in the default location.

#### Use ENV to store the key pair

You can use docker environment variables to store the keys. Just follow this examples:

```bash
docker run --name rustdesk-server \ 
  --net=host \
  -e "RELAY=rustdeskrelay.example.com" \
  -e "ENCRYPTED_ONLY=1" \
  -e "DB_URL=/db/db_v2.sqlite3" \
  -e "KEY_PRIV=FR2j78IxfwJNR+HjLluQ2Nh7eEryEeIZCwiQDPVe+PaITKyShphHAsPLn7So0OqRs92nGvSRdFJnE2MSyrKTIQ==" \
  -e "KEY_PUB=iEyskoaYRwLDy5+0qNDqkbPdpxr0kXRSZxNjEsqykyE=" \
  -v "$PWD/db:/db" -d rustdesk/rustdesk-server-s6:latest
```

```yaml
version: '3'

services:
  rustdesk-server:
    container_name: rustdesk-server
    ports:
      - 21115:21115
      - 21116:21116
      - 21116:21116/udp
      - 21117:21117
      - 21118:21118
      - 21119:21119
    image: rustdesk/rustdesk-server-s6:latest
    environment:
      - "RELAY=rustdesk.example.com:21117"
      - "ENCRYPTED_ONLY=1"
      - "DB_URL=/db/db_v2.sqlite3"
      - "KEY_PRIV=FR2j78IxfwJNR+HjLluQ2Nh7eEryEeIZCwiQDPVe+PaITKyShphHAsPLn7So0OqRs92nGvSRdFJnE2MSyrKTIQ=="
      - "KEY_PUB=iEyskoaYRwLDy5+0qNDqkbPdpxr0kXRSZxNjEsqykyE="
    volumes:
      - ./db:/db
    restart: unless-stopped
```

#### Use Docker secrets to store the key pair

You can alternatively use docker secrets to store the keys.
This is useful if you're using **docker-compose** or **docker swarm**.
Just follow this examples:

```bash
cat secrets/id_ed25519.pub | docker secret create key_pub -
cat secrets/id_ed25519 | docker secret create key_priv -
docker service create --name rustdesk-server \
  --secret key_priv --secret key_pub \
  --net=host \
  -e "RELAY=rustdeskrelay.example.com" \
  -e "ENCRYPTED_ONLY=1" \
  -e "DB_URL=/db/db_v2.sqlite3" \
  --mount "type=bind,source=$PWD/db,destination=/db" \
  rustdesk/rustdesk-server-s6:latest
```

```yaml
version: '3'

services:
  rustdesk-server:
    container_name: rustdesk-server
    ports:
      - 21115:21115
      - 21116:21116
      - 21116:21116/udp
      - 21117:21117
      - 21118:21118
      - 21119:21119
    image: rustdesk/rustdesk-server-s6:latest
    environment:
      - "RELAY=rustdesk.example.com:21117"
      - "ENCRYPTED_ONLY=1"
      - "DB_URL=/db/db_v2.sqlite3"
    volumes:
      - ./db:/db
    restart: unless-stopped
    secrets:
      - key_pub
      - key_priv

secrets:
  key_pub:
    file: secrets/id_ed25519.pub
  key_priv:
    file: secrets/id_ed25519      
```

## How to create a keypair

A keypair is needed for encryption; you can provide it, as explained before, but you need a way to create one.

You can use this command to generate a keypair:

```bash
/usr/bin/rustdesk-utils genkeypair
```

If you don't have (or don't want) the `rustdesk-utils` package installed on your system, you can invoke the same command with docker:

```bash
docker run --rm --entrypoint /usr/bin/rustdesk-utils  rustdesk/rustdesk-server-s6:latest genkeypair
```

The output will be something like this:

```text
Public Key:  8BLLhtzUBU/XKAH4mep3p+IX4DSApe7qbAwNH9nv4yA=
Secret Key:  egAVd44u33ZEUIDTtksGcHeVeAwywarEdHmf99KM5ajwEsuG3NQFT9coAfiZ6nen4hfgNICl7upsDA0f2e/jIA==
```

## .deb packages

Separate .deb packages are available for each binary, you can find them in the [releases](https://github.com/rustdesk/rustdesk-server/releases).
These packages are meant for the following distributions:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Debian 11 bullseye
- Debian 10 buster

## ENV variables

hbbs and hbbr can be configured using these ENV variables.
You can specify the variables as usual or use an `.env` file.

| variable | binary | description |
| --- | --- | --- |
| ALWAYS_USE_RELAY | hbbs | if set to **"Y"** disallows direct peer connection |
| DB_URL | hbbs | path for database file |
| DOWNGRADE_START_CHECK | hbbr | delay (in seconds) before downgrade check |
| DOWNGRADE_THRESHOLD | hbbr | threshold of downgrade check (bit/ms) |
| KEY | hbbs/hbbr | if set force the use of a specific key, if set to **"_"** force the use of any key |
| LIMIT_SPEED | hbbr | speed limit (in Mb/s) |
| PORT | hbbs/hbbr | listening port (21116 for hbbs - 21117 for hbbr) |
| RELAY_SERVERS | hbbs | IP address/DNS name of the machines running hbbr (separated by comma) |
| RUST_LOG | all | set debug level (error\|warn\|info\|debug\|trace) |
| SINGLE_BANDWIDTH | hbbr | max bandwidth for a single connection (in Mb/s) |
| TOTAL_BANDWIDTH | hbbr | max total bandwidth (in Mb/s) |