🚀 PieSocket Protocol V4 Is Here
Last updated on September 22nd 2026
Another Tuesday, another Pie.host update!
This week, we shipped a major update to PieSocket: Protocol V4 is now available.
The biggest change is how rooms are handled. With V4, a single WebSocket connection can now subscribe to multiple rooms. This can reduce the number of WebSocket connections your application needs to maintain, which can also help reduce connection usage on your PieSocket plan.
We also expanded the documentation with new guides covering V3, V4, Webhooks, and building PieSocket clients in other programming languages.
🔌 Subscribe to Multiple Rooms with One Connection
PieSocket Protocol V4 now allows a single WebSocket connection to subscribe to multiple rooms.
Previously, applications that needed to listen to several rooms could require multiple WebSocket connections. With V4, those room subscriptions can be handled through a single connection.
Fewer connections can mean lower connection usage and simpler realtime architecture, particularly for applications where users need to listen to many channels at once.
SDKs have been published for Android, Flutter, JS/React native and iOS.
Here is the 👉 quick migration guide.
📚 New PieSocket Documentation
Alongside V4, we've added several new documentation pages to make working with PieSocket easier.
🪝 Webhooks
A new guide covering PieSocket Webhooks and how to integrate them into your application.
📖 V3 Protocol Guide
We've added a dedicated reference for the existing V3 protocol, making it easier to understand and maintain applications that haven't migrated yet.
⚡ V4 Protocol Guide
The new V4 protocol now has its own documentation covering the updated connection and room subscription model.
🛠️ Build Your Own PieSocket Client
You can now build a PieSocket client in virtually any programming language by implementing the protocol yourself.
This is useful if you're working with a language that doesn't have an official PieSocket client or if you need a custom implementation for your application.
🔧 Small Improvements
This week's release also included documentation updates and cleanup around the PieSocket protocol to make the transition between versions easier.
🎯 What's Next
With Protocol V4 now released, we are soon going to publish demos and tutorials on how to integrate PieSocket, with code examples.
See you next Tuesday!