iOS (Swift)

Once you've started receiving data from a device into your app, you can start sending this data to Terra's websocket server (the broker).

This will later allow you to receive it on your backend, and process it as per your requirements.

Prerequisite

Before following the steps below, make sure you've followed the guide to stream data from a wearable device to your app

Setting up a connection

You'll have previously set up a local stream between a wearable device and your app using the startRealtime function. In order to send this data to the broker, use the startRealtime overload that accepts a token:

import TerraRTiOS

// Assumes terraRT is already initialized and a device is connected
// (see the "Connect Wearable to SDK" guide)

let token = "yourStreamingToken"  // Generated from your backend (see below)
let dataTypes: Set<TerraRTiOS.DataTypes> = [.HEART_RATE, .STEPS]

// Stream to BOTH your app AND Terra's websocket server
terraRT.startRealtime(
    type: .BLE,
    dataType: dataTypes,
    token: token,
    callback: { update in
        print("\(update.type ?? ""): \(update.val ?? 0) at \(update.ts ?? "")")
    },
    connectionCallback: { connected in
        print("Websocket connected: \(connected)")
    }
)

Simply passing in a token from the following endpoint will allow you to stream the same data you were reading previously within your app, and have it sent to the broker.

Stream - Generate user token

post

Generates a single-use token for a user (producer) connection. The id identifies the user the token is scoped to — a v6 connection id or a v5 compatibility user UUID — and must belong to the authenticating developer.

Authorizations

x-api-keystringRequired

Your API key for authentication

dev-idstringRequired

Your developer ID for authentication and tracking

Query parameters

idstringRequired

The id of the user to generate a token for.

Responses

200

Token generated.

application/json

tokenstringRequired

Single-use token to present in the IDENTIFY frame.

Example: OTYwNWFi5ZWQMTAxMjg0Y2Qw.gzrPzZcS3Gy8QDOxbiPRwu30PTB3VxW0eE

400

Missing id parameter, or missing/malformed authentication headers.

403

Invalid credentials, or the user does not belong to this developer.

500

Token generation failed.

post/auth/user

POST /auth/user?id=text HTTP/1.1
Host: ws.tryterra.co
x-api-key: YOUR_API_KEY
dev-id: YOUR_API_KEY
Accept: */*

{
  "token": "OTYwNWFi5ZWQMTAxMjg0Y2Qw.gzrPzZcS3Gy8QDOxbiPRwu30PTB3VxW0eE"
}