PolyNet™ HTML5 SDK

Connecting

The following parameters are needed for a successful integration with PolyNet SDK:

HTTP Authorization & CORS [Optional]

Sometimes, players access content that requires some form of credentials (cookies, authorization headers, TLS client certificates, etc), and also need to support browsers that restrict cross-domain HTTP requests (CORS).

Players usually let you set a flag (for example, withCredentials), to enable cross-domain access with credentials.

The SDK gets the setting from the player. However, it might not be possible in all cases. Advice: To avoid video not playing due to CORS-related errors, you can explicitly set withCredentials in the SDK (matching whichever you set in the player).

polyNetConfig: {
    apiKey: '<YOUR_API_KEY>', // mandatory
    channelId: '<CHANNEL_ID>', // optional
    withCredentials: true // optional
}

Handling events [Optional]

onCreate

In order to receive know when the PolyNet is created you shall create onCreate function:

function onCreate() {
    // Do something after PolyNet is Created
}

polyNetConfig: {
    apiKey: '<YOUR_API_KEY>', // mandatory
    channelId: '<CHANNEL_ID>', // optional
    onCreate: onCreate
}

onMetrics

In order to receive metrics from the PolyNet you shall create onMetrics function:

/**
 * @param {Object} polyNetMetricsObject
 */
function onMetrics(polyNetMetricsObject) {
    // Handle polyNetMetricsObject
    console.log(polyNetMetricsObject)
}

polyNetConfig: {
    apiKey: '<YOUR_API_KEY>', // mandatory
    channelId: '<CHANNEL_ID>', // optional
    onMetrics: onMetrics
}
polyNetMetricsObject

An object generate from PolyNet Node with following information:

Name Type description
accumulatedCdnDownThroughput String The amount of data as payload received from the CDN since the session started. (Kilobits).
accumulatedP2pDownThroughput String The amount of data as payload received from P2P since the session started. (Kilobits).
bufferFillingRate String The rate at which the content is received versus playing time.
cdnDownThroughput String The amount of data as payload received from the CDN during the last reporting period. (Kilobits).
connectionStatus String Describes the current connection status of the node.
date String The timestamp on which the metrics object was created.
deviceId String Unique identifier for the device running the PolyNet.
downSpeed String The last computed download speed (Kilobits).
inboundNodeId String Unique identifier for the inbound connection if connected to other peer or the value “POI” if downloading from CDN.
isConnected Boolean A Boolean that identifies if the node is connected to PolyNet.
nodeId String Unique identifier for the PolyNet node.
outboundMetrics Array Metrics for outbound peers. See below Outbound Metrics.
p2pDownThroughput String The amount of data as payload received from P2P during the last reporting period. (Kilobits).
playerBufferHealth String The amount of milliseconds (playback time) that are left for playing in the player's video read-ahead buffer.
playerTimeToFirstFrame String The amount of milliseconds from the start of the PolyNet until the player starts playback.
representationId String Unique identifier for the current representation or rendition being displayed.
roundTripTime String The amount of time between sending a data packet from a child node to its inbound P2P peer and back. (milliseconds).
source String The source specifies where the content is downloaded from.
streamId String Unique identifier for the current stream being displayed.
upSpeed String The last computed upload speed. (Kilobits).
outboundMetrics
Name Type description
bufferFillingRate String The rate at which the content is received in the PolyNet outbound peer versus playing time.
nodeId String Unique identifier for the PolyNet outbound peer.
status String The status of the connection for the PolyNet outbound peer.

The error method will be called when the PolyNet raises an error. Nevertheless, the PolyNet will keep working as reliably as possible. This method is useful in the debugging of the integration process.

The metrics method will be called periodically to deliver metrics of the PolyNet.

Other considerations [Optional]

Sharing content restriction

Using the sharingContent property you can control how your application will participate in the PolyNet. Its possible values are:

polyNetConfig: {
    apiKey: '<YOUR_API_KEY>', // mandatory
    channelId: '<CHANNEL_ID>', // optional
    sharingContent: 'ONLY_ON_LAN' // default
}

Use case: If you want to allow your users to opt in/out of P2P networking, you can set this property based on a control in your application.