𝗧𝗵𝗲 𝗪𝗲𝗯𝗦𝗼𝗰𝗸𝗲𝘁 𝗔𝘂𝘁𝗵 𝗣𝗿𝗼𝗯𝗹𝗲𝗺: 𝗖𝗼𝗼𝗸𝗶𝗲𝘀 𝘃𝘀. 𝗕𝗲𝗮𝗿𝗲𝗿 𝗧𝗼𝗸𝗲𝗻𝘀

𝗧𝗵𝗲 𝗪𝗲𝗯𝗦𝗼𝗰𝗸𝗲𝘁 𝗔𝘂𝘁𝗵 𝗣𝗿𝗼𝗯𝗹𝗲𝗺: 𝗖𝗼𝗼𝗸𝗶𝗲𝘀 𝘃𝘀. 𝗕𝗲𝗮𝗿𝗲𝗿 𝗧𝗼𝗸𝗲𝗻𝘀

Do you build real-time apps? You often struggle with WebSocket authentication.

HTTP authentication is simple. You use a cookie or a Bearer token. WebSockets are different.

A WebSocket starts with an HTTP GET request. This is the handshake. The browser WebSocket API does not allow custom headers. You are unable to add an Authorization header.

Common workarounds fail:

• Query parameters leak tokens in server logs.
• First message auth adds latency.
• Subprotocols feel clunky.

Use HTTP-only cookies. The browser attaches these automatically to the handshake.

Your client code stays simple. You do not need interceptors or wrappers.

The backend requires a few extra steps. You receive a raw request object. You must parse the cookie string manually.

The process is simple:

• Parse the raw cookie header.
• Verify the JWT signature.
• Link the user ID to the socket.

HTTP-only cookies remove friction. You avoid leaking tokens and reduce logic complexity. You trade a bit of backend parsing for a better security posture.

Source: https://dev.to/nikhilsharma6/the-websocket-auth-problem-cookies-vs-bearer-tokens-4eel