52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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// 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 connections and broadcasts messages to the
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// connections.
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type hub struct {
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// Registered connections.
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connections map[*connection]bool
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// Inbound messages from the connections.
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broadcast chan []byte
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// Register requests from the connections.
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register chan *connection
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// Unregister requests from connections.
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unregister chan *connection
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}
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var h = hub{
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broadcast: make(chan []byte),
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register: make(chan *connection),
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unregister: make(chan *connection),
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connections: make(map[*connection]bool),
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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 c := <-h.register:
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h.connections[c] = true
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case c := <-h.unregister:
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if _, ok := h.connections[c]; ok {
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delete(h.connections, c)
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close(c.send)
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}
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case m := <-h.broadcast:
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for c := range h.connections {
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select {
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case c.send <- m:
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default:
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close(c.send)
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delete(h.connections, c)
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}
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}
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}
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}
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}
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