WebSocket is a communication protocol that keeps a single connection open between a client and a server for ongoing two-way data exchange. Unlike standard HTTP requests, it does not need a new connection for every message sent.
A WebSocket connection starts as a regular HTTP request that includes a special header asking to upgrade to the WebSocket protocol. Once the server agrees, the connection switches from HTTP to WebSocket and stays open, allowing both the client and server to send messages at any time without repeating the request process. This makes WebSocket well suited for applications that need constant updates, like live chat, stock tickers, or multiplayer games. Because the connection stays open, proxies handling WebSocket traffic need to support long-lived connections rather than treating each request as a separate, short transaction.
Most proxy users only need to understand this well enough to debug it, not configure it directly.
USER-country-de-session-task01The username carries the config: "country-de" picks the exit, "session-task01" holds it in place while WebSocket does its work underneath. No separate API call or handshake -- the label is the setting.
Measure this metric without a proxy first, so you know what the gateway adds versus what was already there.
This concept governs the connection to the gateway and the gateway to the target -- check both when something looks wrong.
KnoxProxy manages this at the infrastructure layer, so most jobs only need to understand it well enough to debug.
A new ISP, VPN, or office network can change how this behaves -- confirm it again after any local network change.
A live sports score app uses a WebSocket connection through a proxy to push score updates instantly without repeatedly polling the server.
Proxies that do not properly support WebSocket connections can break real-time features like chat, live notifications, or trading platforms. Confirming WebSocket support matters for anyone building or scraping applications that rely on constant, live data updates.
Not all of them. Some proxy configurations are built only for standard HTTP requests and will not properly maintain the long-lived, two-way connection that WebSocket needs, so it is worth confirming support before relying on it.
It is common in applications that need real-time updates, such as live chat, multiplayer games, price tickers, and collaborative tools where data needs to move instantly in both directions.
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