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@startuml
hide empty description
scale 10000
left to right direction
!pragma layout elk
component "Mullvad daemon" as mullvad_daemon {
() "Management interface" as management_interface
() "Mullvad API" as mullvad_api
node "Daemon" as daemon {
[Settings] as settings #yellow
[Account history] as account_history #yellow
[Various state around tunnels and relays] #yellow
}
node "Tunnel state machine" as tsm {
[Firewall] as firewall #yellow
[DNS] as dns #yellow
[Routing] as routing
[Tunnel] as tunnel
[Offline monitor] as offline_monitor
}
[Account manager] as account_manager
[Mullvad API client] as rest_service
[Relay list updater] as relay_list_updater
[Version updater] as version_updater
[Relay selector] as relay_selector #yellow
}
legend
Yellow components are shared synchronously (via a mutex).
end legend
management_interface -> daemon : Incoming RPCs
daemon -> tsm : Sets target tunnel state
tsm -> daemon : "Notifies of changes to tunnel state, gets tunnel connection config"
tsm -> daemon : Get tunnel connection config
daemon -> relay_selector : Select a relay for a connection
daemon -> rest_service : Change API availability
daemon -> relay_list_updater : Force relay list update
daemon -> version_updater : Fetch current version
daemon -> account_manager : Fetch account data
daemon -> account_manager : Fetch device data and WG key
relay_list_updater -> relay_selector : Update relay list
account_manager -> daemon : Account/device events
rest_service -> relay_selector : Select bridge relay for API connection
rest_service -> tsm : Unblock API endpoint
rest_service -> mullvad_api : Send requests to our web service
relay_list_updater -> rest_service : Fetch relay list from API
version_updater -> rest_service : Fetch latest app versions
account_manager -> rest_service : Fetch account data
account_manager -> rest_service : Fetch device data, rotate keys
@enduml
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