Have you ever had your live trading bot kicked off the data server just when the market started moving? I certainly have. The culprit wasn't my trading strategy, but how I was shouting subscribe and unsubscribe commands at my WebSocket connection. Let me share how I built a polite, stateful client that keeps the data flowing cleanly.

When you're developing a high-frequency forex bot as a solo dev, you quickly realize that a real-time feed isn't a static resource. Your strategy constantly shifts focus, and your code must tell the server to add new currency pairs and drop old ones without reconnecting . If you get this wrong, you'll either flood yourself with useless ticks or get rate-limited into oblivion. Let's fix that.

The Problem: Stateless Requests to a Stateful Connection

We often treat a WebSocket like a REST endpoint, firing off messages whenever we feel like it. Imagine a breakout strategy that monitors EURUSD . The moment volatility spikes, it wants to also watch GBPUSD and USDJPY .…