/
hub.go
59 lines (54 loc) · 1.13 KB
/
hub.go
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package main
import (
"fmt"
"log"
)
type Hub struct {
clients map[*Client]bool
broadcast chan []byte
register chan *Client
unregister chan *Client
}
func newHub() *Hub {
return &Hub{
clients: make(map[*Client]bool),
broadcast: make(chan []byte),
register: make(chan *Client),
unregister: make(chan *Client),
}
}
func (h *Hub) send(message []byte, ignore *Client) {
for client := range h.clients {
if client != ignore {
client.send <- message
}
}
}
func (h *Hub) run() {
for {
select {
case client := <-h.register:
h.clients[client] = true
m := fmt.Sprintf("系统提示: %s 进入聊天室", client.name)
log.Println(m)
h.send([]byte(m), client)
case client := <-h.unregister:
if _, ok := h.clients[client]; ok {
delete(h.clients, client)
close(client.send)
m := fmt.Sprintf("系统提示: %s 离开聊天室", client.name)
log.Println(m)
h.send([]byte(m), client)
}
case message := <-h.broadcast:
for client := range h.clients {
select {
case client.send <- message:
default:
close(client.send)
delete(h.clients, client)
}
}
}
}
}