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# Navigation Service
## Overview
Navigation service keeps track of application data that allows other clients to share location, waypoints,
and state between each other.
## Verbs
| Name | Description | JSON Response |
|---------------------|---------------------------------------------|------------------------------------|
| subscribe | subscribe to an navigation service | *Request:* {"value": "status"} |
| unsubscribe | unsubscribe to an navigation service | *Request:* {"value": "status"} |
| broadcast_status | broadcast status event to other clients | *Request:* {"state": "stop"} |
| broadcast_position | broadcast position event to other clients | See *position Verb* section |
| broadcast_waypoints | broadcast waypoints events to other clients | See *waypoints Verb* section |
### broadcast_position Verb
Populate same data referenced in *position Event* section for the event
### broadcast_waypoints Verb
Populate same data referenced in *waypoints Event* section for the event
## Events
| Name | Description |
|----------------|-------------------------------------|
| status | status of the navigation engine |
| position | current route or car position event |
| waypoints | waypoints for routing engine |
### position Event
<pre>
{
"points": [
{
"position": "car",
"latitude": 36.12906,
"longitude": -115.17908
"direction": 273.0,
"distance": 1530.45
}
]
}
</pre>
### waypoints Event
<pre>
{
"points": [
{
"latitude": 36.12906,
"longitude": -115.17908
}
]
}
</pre>
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