How to Send Messages to Specific Clients in Go with Gorilla WebSocket?

Tailoring WebSockets: Sending to Specific Clients with Go and Gorilla WebSocket

WebSocket communication in Go may present a question: how can you send messages to individual clients rather than broadcasting to all? To tackle this, let's explore the approach of linking client IDs to user IDs to enable targeted messaging.

In the given code sample, you have a hub storing a pool of connections. This pool is employed to broadcast messages widely:

<code class="go">case m := <-h.broadcast:
    for c := range h.connections {
        select {
        case c.send <- m:
        default:
            close(c.send)
            delete(h.connections, c)
        }
    }
}</code>

To enable individual messaging, you can establish a method that takes a specific userId as an argument and uses it to send messages exclusively to the corresponding client. By maintaining a mapping between userIds and connectionIds, you can effortlessly send messages to specific users, ensuring tailored communication.

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