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54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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// hub maintains the set of active clients and broadcasts messages to the
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// clients.
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type Hub struct {
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// Registered clients.
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clients map[*Client]bool
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// Inbound messages from the clients.
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broadcast chan []byte
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// Register requests from the clients.
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register chan *Client
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// Unregister requests from clients.
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unregister chan *Client
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}
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func newHub() *Hub {
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return &Hub{
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broadcast: make(chan []byte),
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register: make(chan *Client),
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unregister: make(chan *Client),
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clients: make(map[*Client]bool),
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}
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}
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func (h *Hub) run() {
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for {
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select {
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case client := <-h.register:
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h.clients[client] = true
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case client := <-h.unregister:
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if _, ok := h.clients[client]; ok {
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delete(h.clients, client)
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close(client.send)
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}
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case message := <-h.broadcast:
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for client := range h.clients {
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select {
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case client.send <- message:
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default:
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close(client.send)
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delete(h.clients, client)
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}
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}
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}
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}
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}
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