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This document describes how to use the 4Caster Orders WebSocket API for real-time order placement, cancellation, and management.

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Websocket connection

To connect, establish a WebSocket to this link wss://orders-api.4casters.io/orders/ws The WebSocket connection must include an Authorization header containing a valid token from the 4Casters API. 
const ws = new WebSocket("wss://orders-api.4casters.io/orders/ws", {
    headers: {
        Authorization: YOUR_TOKEN,
    } 
});

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Heartbeat

This message is used to trigger a heartbeat with a given requestTimeout. If another heartbeat message is not received within the requestTimeout period, then all of your orders will be cancelled. 
[
    "heartbeat",
    {
        "requestTimeout": NUMBER
    }
]