How do you secure a WebSocket?
How to secure your WebSocket connections
- #0: Enable CORS. WebSocket doesn’t come with CORS inbuilt.
- #1: Implement rate limiting. Rate limiting is important.
- #2: Restrict payload size.
- #3: Create a solid communication protocol.
- #4: Authenticate users before WS connection establishes.
- #5: Use SSL over websockets.
- Questions?
Should I use Websockets for everything?
The WebSocket protocol offers a persistent connection to exchange messages. Avoid using WebSockets if only a small number of messages will be sent or if the messaging is very infrequent. Unless the client must quickly receive or act upon updates, maintaining the open connection may be an unnecessary waste of resources.
Is WebSocket obsolete?
Websockets are largely obsolete because nowadays, if you create a HTTP/2 fetch request, any existing keepalive connection to that server is used, so the overhead that pre-HTTP/2 XHR connections needed is lost and with it the advantage of Websockets. Server-sent events (SSE) is an option.
How many connections can WebSockets handle?
Actually, it’s a half-truth. The server can handle 65,536 sockets per single IP address. So the quantity can be easily extended by adding additional network interfaces to a server. Meanwhile, it’s extremely important to track how many connections present on a server.
Can multiple client connect to same WebSocket?
A server can open WebSocket connections with multiple clients—even multiple connections with the same client. It can then message one, some, or all of these clients. Practically, this means multiple people can connect to our chat app, and we can message some of them at a time.
Where does the WebSocket connection occur in Firefox?
The connection to the websocket server occurs within a Firefox addon, and by default Firefox’s TCP setup has a 10 minute timeout. You can see additional details with about:config and searching for TCP.
How to get client IP address with WebSocket?
After a bit of messing around trying to figure out which one gives the client (web browser’s) IP address, the answer is: Or if you have access to req via wss.on (‘connection’, (ws, req) => {}): You can use this, for example, to GeoIP locate where the user is connecting from.
How to handle connection loss with WebSockets?
If the connection is lost, the onclose event is triggered which displays an alert and also attempts to re-establish connection I used the ping/pong idea and it works nicely. Here’s my implementation in my server.js file: Here’s a link to the cloud 9 sandbox if you want to try it out yourself: https://ide.c9.io/design1online/web-sockets
How does the browser respond to a WebSocket Ping?
So basically, if the server sends a ping, the browser will answer with a pong, and it should work also the other way around. Probably the WebSocket server you use implements them, and you can define a timeout in which the browser must responds or be considered dead.