LiveKit Server API for Ruby

Use this SDK to interact with LiveKit server APIs and create access tokens from your Ruby backend.

This library is designed to work with Ruby 2.6.0 and above.

Installation

Add this line to your application's Gemfile:

Gemfile

gem 'livekit-server-sdk'

and then bundle install.

Install system-wide

gem install livekit-server-sdk

Usage

Creating Access Tokens

Creating a token for participant to join a room.

require 'livekit'

token = LiveKit::AccessToken.new(api_key: 'yourkey', api_secret: 'yoursecret')
token.identity = 'participant-identity'
token.name = 'participant-name'
token.set_video_grant(LiveKit::VideoGrant.new(roomJoin: true, room: 'room-name'))
token.attributes = { "mykey" => "myvalue" }
puts token.to_jwt

By default, a token expires after 6 hours. You may override this by passing in ttl when creating the token. ttl is expressed in seconds.

Setting Permissions with Access Tokens

It's possible to customize the permissions of each participant. See more details at access tokens guide.

Room Service

RoomServiceClient is a Twirp-based client that provides management APIs to LiveKit. You can connect it to your LiveKit endpoint. See service apis for a list of available APIs.

require 'livekit'

client = LiveKit::RoomServiceClient.new('https://my.livekit.instance',
    api_key: 'yourkey', api_secret: 'yoursecret')

name = 'myroom'

client.list_rooms

client.list_participants(room: name)

client.mute_published_track(room: name, identity: 'participant',
                            track_sid: 'track-id', muted: true)

client.remove_participant(room: name, identity: 'participant')

client.delete_room(room: name)

Egress Service

EgressServiceClient is a ruby client to EgressService. Refer to docs for more usage examples

require 'livekit'

# starting a room composite to S3
egressClient = LiveKit::EgressServiceClient.new(
    "https://your-url",
    api_key: 'key',
    api_secret: 'secret'
);

info = egressClient.start_room_composite_egress(
    'room-name',
    LiveKit::Proto::EncodedFileOutput.new(
        file_type: LiveKit::Proto::EncodedFileType::MP4,
        filepath: "my-recording.mp4",
        s3: LiveKit::Proto::S3Upload.new(
            access_key: 'access-key',
            secret: 'secret',
            region: 'bucket-region',
            bucket: 'bucket'
        )
    )
)
puts info

# starting a track composite to RTMP
urls = Google::Protobuf::RepeatedField.new(:string, ['rtmp://url1', 'rtmps://url2'])
info = egressClient.start_track_composite_egress(
    'room-name',
    LiveKit::Proto::StreamOutput.new(
        protocol: LiveKit::Proto::StreamProtocol::RTMP,
        urls: urls
    ),
    audio_track_id: 'TR_XXXXXXXXXXXX',
    video_track_id: 'TR_XXXXXXXXXXXX'
)
puts info

Environment Variables

You may store credentials in environment variables. If api-key or api-secret is not passed in when creating a RoomServiceClient or AccessToken, the values in the following env vars will be used:

• LIVEKIT_API_KEY
• LIVEKIT_API_SECRET

License

The gem is available as open source under the terms of Apache 2.0 License.

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