143 lines
5.1 KiB
Markdown
143 lines
5.1 KiB
Markdown
# Mumble Discord Bridge
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Mumble Discord Bridge is an open source Go application to bridge the audio between Mumble and Discord.
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It was built with the hope that people can continue to use the voice application of their choice.
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## Usage
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Several configuration variables must be set for the binary to function correctly.
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All variables can be set using flags or in the environment.
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The binary will also attempt to load .env file located in the working directory.
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```bash
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Usage of mumble-discord-bridge:
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-discord-cid string
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DISCORD_CID, discord channel ID
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-discord-gid string
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DISCORD_GID, discord guild ID
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-discord-token string
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DISCORD_TOKEN, discord bot token
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-discord-command string
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DISCORD_COMMAND, the string to look for when manually entering commands in Discord (in the form of !DISCORD_COMMAND)
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-mumble-address string
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MUMBLE_ADDRESS, mumble server address, example example.com
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-mumble-password string
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MUMBLE_PASSWORD, mumble password, optional
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-mumble-port int
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MUMBLE_PORT mumble port (default 64738)
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-mumble-username string
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MUMBLE_USERNAME, mumble username (default "discord-bridge")
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-mumble-insecure bool
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MUMBLE_INSECURE, allow connection to insecure (invalid TLS cert) mumble server
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-mumble-channel string
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MUMBLE_CHANNEL, pick what channel the bridge joins in Mumble. Must be a direct child of Root.
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-mode string
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MODE, determines what mode the bridge starts in
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```
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The bridge can be run with the follow modes:
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```bash
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auto
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The bridge starts up but does not connect immediately. It can be either manually linked (see below) or will join the voice channels when there's at least one person on each side.
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The bridge will leave both voice channels once there is no one on either end
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manual
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The bridge starts up but does not connect immediately. It will join the voice channels when issued the link command and will leave with the unlink command
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constant
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The bridge starts up and immediately connects to both Discord and Mumble voice channels. It can not be controlled in this mode and quits when the program is stopped
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```
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In "auto" or "manual" modes, the bridge can be controlled in Discord with the following commands:
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```bash
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!DISCORD_COMMAND link
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Commands the bridge to join the Discord channel the user is in and the Mumble server
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!DISCORD_COMMAND unlink
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Commands the bridge to leave the Discord channel the user is in and the Mumble server
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!DISCORD_COMMAND refresh
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Commands the bridge to unlink, then link again.
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!DISCORD_COMMAND auto
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Toggle between manual and auto mode
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```
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## Setup
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### Creating a Discord Bot
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A Discord bot is required to authenticate this application with Discord.
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The guide below provides information on how to setup a Discord bot.
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[Create a Discord Bot](https://discordpy.readthedocs.io/en/latest/discord.html)
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Individual Discord servers need to invite the bot before it can connect.
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### Binary
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Prebuilt binaries are available.
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```bash
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curl -s https://api.github.com/repos/stieneee/mumble-discord-bridge/releases/latest | grep "mumble-discord-bridge" | grep "browser_download_url" | cut -d '"' -f 4 | wget -qi -
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```
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### Docker
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This project is built and distributed in a docker container.
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A sample docker command can be copied from below.
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This service command will always attempt to restart the service due to the `--restart=always` flag even when the server is restarted.
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For testing purposes it may be best to remove the restart flag.
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Replace the environment variables with variable for the desired mumble server, discord bot and discord server/channel.
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```bash
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# Sample for testing
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docker docker run -e MUMBLE_ADDRESS=example.com -e MUMBLE_PASSWORD=optional -e DISCORD_TOKEN=TOKEN -e DISCORD_GID=GID -e DISCORD_CID=CID stieneee/mumble-discord-bridge
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# Run as a service
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docker docker run -e MUMBLE_ADDRESS=example.com -e MUMBLE_PASSWORD=optional -e DISCORD_TOKEN=TOKEN -e DISCORD_GID=GID -e DISCORD_CID=CID --restart=always --name=mumble-discord-bridge -d stieneee/mumble-discord-bridge
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# Stop the service
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docker stop mumble-discord-bridge && docker rm mumble-discord-bridge
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```
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### Mumbler Server Setting
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To ensure compatibility please edit your murmur configuration file with the following
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```bash
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opusthreshold=0
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```
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This ensures all packets are opus encoded and should not cause any compatibility issues if your users are using up to date clients.
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## Building From Source
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This project requires Golang to build from source.
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A simple go build command is all that is needed.
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Ensure the opus library is installed.
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```bash
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go build -o mumble-discord-bridge *.go
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```
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## Known Issues
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Currently there is an issue opening the discord voice channel.
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It is a known issue with a dependency of this project.
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Audio leveling from Discord needs to be improved.
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## License
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Distributed under the MIT License. See LICENSE for more information.
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## Contributing
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Issues and PRs are welcome and encouraged.
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Please consider opening an issue to discuss features and ideas.
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## Acknowledgement
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The project would not have been possible without:
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- [gumble](https://github.com/layeh/gumble)
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- [discordgo](https://github.com/bwmarrin/discordgo)
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