neko/docs/getting-started/configuration.md
Miroslav Šedivý ac822a2531 update docs.
2022-11-19 20:45:38 +01:00

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# Configuration
Config values can be set using three methods, sorted on this page by priority.
Example, setting `nat1to1` variable:
- As env variable: `NEKO_NAT1TO1=<ip>`
- As argument: `--nat1to1=<ip>`
- In YAML config file:
```yaml
nat1to1: <ip>
```
## Environment variables
#### `NEKO_SCREEN`:
- Resolution after startup. Only Admins can change this later.
- e.g. `1920x1080@30`
#### `NEKO_PASSWORD`:
- Password for the user login.
- e.g. `user_password`
#### `NEKO_PASSWORD_ADMIN`:
- Password for the admin login.
- e.g. `admin_password`
#### `NEKO_CONTROL_PROTECTION`:
- Control protection means, users can gain control only if at least one admin is in the room.
- e.g. `false`
#### `NEKO_IMPLICIT_CONTROL`:
- If enabled members can gain control implicitly, they don't needd to request control.
- e.g. `false`
#### `NEKO_LOCKS`:
- Resources, that will be locked when starting, separated by whitespace.
- Currently supported:
- `control`
- `login`
- `file_transfer`
- e.g. `control`
### WebRTC
#### `NEKO_EPR`:
- For WebRTC needed range of UDP ports.
- e.g. `52000-52099`
#### `NEKO_UDPMUX`:
- Alternative to epr with only one UDP port.
- e.g. `52100`
#### `NEKO_TCPMUX`:
- Use TCP connection, meant as fallback for UDP.
- e.g. `52100`
#### `NEKO_NAT1TO1`:
- IP of the server that will be sent to client, if not specified, public IP is automatically resolved.
- e.g. `10.0.0.1`
#### `NEKO_IPFETCH`:
- Automatically fetch IP address from given URL when `nat1to1` is not specified.
- e.g. `http://checkip.amazonaws.com`
#### `NEKO_ICELITE`:
- Use the ice lite protocol.
- e.g. `false`
#### `NEKO_ICESERVER`:
- Describes a single STUN and TURN server that can be used by the ICEAgent to establish a connection with a peer (simple usage for server without authentication).
- e.g. `stun:stun.l.google.com:19302`
#### `NEKO_ICESERVERS`:
- Describes multiple STUN and TURN server that can be used by the ICEAgent to establish a connection with a peer.
- e.g. `[{"urls": ["turn:turn.example.com:19302", "stun:stun.example.com:19302"], "username": "name", "credential": "password"}, {"urls": ["stun:stun.example2.com:19302"]}]`
- [More information](https://developer.mozilla.org/en-US/docs/Web/API/RTCIceServer)
### Video
#### `NEKO_VIDEO_CODEC`:
- vp8 *(default encoder)*
- vp9 *(parameter not optimized yet)*
- h264 *(second best option)*
#### `NEKO_VIDEO_BITRATE`:
- Bitrate of the video stream in kb/s.
- e.g. 3500
#### `NEKO_VIDEO`:
- Makes it possible to create custom gstreamer video pipeline. With this you could find the best quality for your CPU.
- Installed are
- `gstreamer1.0-plugins-base`
- `gstreamer1.0-plugins-good`
- `gstreamer1.0-plugins-bad`
- `gstreamer1.0-plugins-ugly`
- e.g. `ximagesrc display-name=%s show-pointer=true use-damage=false ! video/x-raw,framerate=30/1 ! videoconvert ! queue ! video/x-raw,format=NV12 ! x264enc threads=4 bitrate=3500 key-int-max=60 vbv-buf-capacity=4000 byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream`
#### `NEKO_MAX_FPS`:
- The resulting stream frames per seconds should be capped *(0 for uncapped)*.
- e.g. `0`
#### `NEKO_HWENC`:
- Use hardware accelerated encoding, for now supported only `VAAPI`.
- e.g. `VAAPI`
### Audio
#### `NEKO_AUDIO_CODEC`:
- opus *(default encoder)*
- g722
- pcmu
- pcma
#### `NEKO_AUDIO_BITRATE`:
- Bitrate of the audio stream in kb/s.
- e.g. `196`
#### `NEKO_AUDIO`:
- Makes it possible to create custom gstreamer audio pipeline, same as for video.
e.g. `pulsesrc device=%s ! audio/x-raw,channels=2 ! audioconvert ! opusenc bitrate=128000`
### Broadcast
#### `NEKO_BROADCAST_PIPELINE`:
- Makes it possible to create custom gstreamer pipeline used for broadcasting, strings `{url}`, `{device}` and `{display}` will be replaced.
#### `NEKO_BROADCAST_URL`:
- Set a default URL for broadcast streams. Setting this value will automatically enable broadcasting when n.eko starts. It can be disabled/changed later by admins in the GUI.
- e.g. `rtmp://<your-server>:1935/ingest/<stream-key>`
### Server
#### `NEKO_BIND`:
- Address/port/socket where neko binds to *(default 127.0.0.1:8080)*.
- e.g. `:8080`
#### `NEKO_CERT`:
- Path to the SSL-Certificate.
- e.g. `/certs/cert.pem`
#### `NEKO_KEY`:
- Path to the SSL-Certificate private key.
- e.g. `/certs/key.pem`
#### `NEKO_PROXY`:
- Enable reverse proxy mode, so that neko trusts `X-Forwarded-For` headers.
- e.g. `false`
#### `NEKO_PATH_PREFIX`:
- Path prefix for HTTP requests.
- e.g. `/neko/`
#### `NEKO_CORS`:
- Cross origin request sharing, whitespace separated list of allowed hosts, `*` for all.
- e.g. `127.0.0.1 neko.example.com`
### File Transfer
#### `NEKO_FILE_TRANSFER_ENABLED`:
- Enable file transfer feature.
- e.g. `true`
#### `NEKO_FILE_TRANSFER_PATH`:
- Path where files will be transferred between the host and users. By default this is
`/home/neko/Downloads`. If the path doesn't exist, it will be created.
- e.g. `/home/neko/Desktop`
### Expert settings
#### `NEKO_DISPLAY`:
- XDisplay to capture.
#### `NEKO_DEVICE`:
- Audio device be to captured.
#### `NEKO_STATIC`:
- Path to neko client files to serve.
## Arguments
You can execute `neko serve --help` to see available arguments.
```
Usage:
neko serve [flags]
Flags:
--audio string audio codec parameters to use for streaming
--audio_bitrate int audio bitrate in kbit/s (default 128)
--audio_codec string audio codec to be used (default "opus")
--bind string address/port/socket to serve neko (default "127.0.0.1:8080")
--broadcast_pipeline string custom gst pipeline used for broadcasting, strings {url} {device} {display} will be replaced
--broadcast_url string URL for broadcasting, setting this value will automatically enable broadcasting
--cert string path to the SSL cert used to secure the neko server
--control_protection control protection means, users can gain control only if at least one admin is in the room
--cors strings list of allowed origins for CORS (default [*])
--device string audio device to capture (default "auto_null.monitor")
--display string XDisplay to capture (default ":99.0")
--epr string limits the pool of ephemeral ports that ICE UDP connections can allocate from (default "59000-59100")
--file_transfer_enabled enable file transfer feature (default false)
--file_transfer_path string path to use for file transfer (default "/home/neko/Downloads")
--g722 DEPRECATED: use audio_codec
--h264 DEPRECATED: use video_codec
-h, --help help for serve
--hwenc string use hardware accelerated encoding
--icelite configures whether or not the ice agent should be a lite agent
--iceserver strings describes a single STUN and TURN server that can be used by the ICEAgent to establish a connection with a peer (default [stun:stun.l.google.com:19302])
--iceservers string describes a single STUN and TURN server that can be used by the ICEAgent to establish a connection with a peer
--implicit_control if enabled members can gain control implicitly
--ipfetch string automatically fetch IP address from given URL when nat1to1 is not present (default "http://checkip.amazonaws.com")
--key string path to the SSL key used to secure the neko server
--locks strings resources, that will be locked when starting (control, login)
--max_fps int maximum fps delivered via WebRTC, 0 is for no maximum (default 25)
--nat1to1 strings sets a list of external IP addresses of 1:1 (D)NAT and a candidate type for which the external IP address is used
--opus DEPRECATED: use audio_codec
--password string password for connecting to stream (default "neko")
--password_admin string admin password for connecting to stream (default "admin")
--path_prefix string path prefix for HTTP requests (default "/")
--pcma DEPRECATED: use audio_codec
--pcmu DEPRECATED: use audio_codec
--proxy enable reverse proxy mode
--screen string default screen resolution and framerate (default "1280x720@30")
--static string path to neko client files to serve (default "./www")
--tcpmux int single TCP mux port for all peers
--udpmux int single UDP mux port for all peers
--video string video codec parameters to use for streaming
--video_bitrate int video bitrate in kbit/s (default 3072)
--video_codec string video codec to be used (default "vp8")
--vp8 DEPRECATED: use video_codec
--vp9 DEPRECATED: use video_codec
Global Flags:
--config string configuration file path
-d, --debug enable debug mode
-l, --logs save logs to file
```
## Config file
You can mount YAML config file to docker container on this path `/etc/neko/neko.yaml` and store your configuration there.
Config uses the keys from arguments, that can be viewed in program's help output.
Example (with just some of the available arguments):
```yaml
# audio bitrate in kbit/s
audio_bitrate: 128
# video bitrate in kbit/s
video_bitrate: 3072
# maximum fps delivered via WebRTC, 0 is for no maximum
max_fps: 25
# password for connecting to stream
password: "neko"
# admin password for connecting to stream
password_admin: "admin"
# default screen resolution and framerate
screen: "1280x720@30"
# limits the pool of ephemeral ports that ICE UDP connections can allocate from
epr: "59000-59100"
```