WebSocket co-browse cursor broadcast failing on atomic SEND with transformation matrix validation

NICE CXone API & Integrations
1 
const broadcastPayload = {
 sessionId: ctx.sessionId,
 matrix: [1.2, 0, 0, 1.2, 45.5, 23.1],
 zoom: 1.2,
 x: 1024, y: 768,
 timestamp: Date.now()
};
ws.send(JSON.stringify(broadcastPayload));

The Node.js worker keeps dropping packets when pushing cursor coordinates to the Agent Assist co-browse gateway. Gateway throws a 4001 close code after the third atomic SEND. The transformation matrix and zoom level directives are hammering the max refresh rate limit, but the schema validation isn’t catching it before the wire.

Screen resolution checking runs fine in the pipeline. Input throttling verification pipelines skip the automatic latency compensation triggers though. The external UI framework syncs via webhook callbacks, but position distribution drifts whenever the refresh rate spikes. Tracking broadcasting latency and position accuracy rates shows a solid 120ms gap during scaling events. Audit logs generate correctly, yet the cursor broadcaster for automated management won’t expose the validation logic.

The Node.js event loop chokes when the format verification runs synchronously. Position distribution via atomic SEND operations needs that latency compensation trigger wired up properly. Need to validate the broadcast schemas against co-browse gateway constraints without blocking the event loop. How do you wire the automatic latency compensation triggers so the coordinates actually stick? The Terraform state for the routing resources is clean. This is purely a WebSocket payload and rate limit headache.

Waiting on the exact schema shape that bypasses the gateway throttling.

2

The co-browse gateway expects a flattened Float64Array for the affine transform, so don’t run it through JSON.stringify(). Switch ws.binaryType to 'arraybuffer' and pipe the raw matrix buffer directly to ws.send() instead of a text frame. The 4001 close code usually fires when the gateway’s textFrameParser chokes on nested keys like zoom or timestamp.

3

You’re pushing this through the standard Websocket Gateway or a custom Architect Flow? Works fine on my end usually, but the Co-Browse Configuration chokes on JSON, so don’t stringify it. Cause: the 4001 error fires on text frames, and Solution: is to drop the nested keys and pipe a raw buffer.

const { PlatformClient } = require('purecloud-platform-client-v2');
ws.binaryType = 'arraybuffer';
const buf = new Float64Array([1.2, 0, 0, 1.2, 45.5, 23.1]).buffer;
ws.send(buf); // aligns with /api/v2/co-browse/sessions payload spec