98 lines
1.8 KiB
Go
98 lines
1.8 KiB
Go
package websocket
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import (
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"encoding/json"
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"log"
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"time"
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"github.com/gorilla/websocket"
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)
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const (
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writeWait = 10 * time.Second
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pongWait = 60 * time.Second
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pingPeriod = (pongWait * 9) / 10
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)
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type WSMessage struct {
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Type string `json:"type"` // "broadcast" 或 "direct"
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To string `json:"to"` // direct单聊时目标uid
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Content string `json:"content"`
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Ack bool `json:"ack,omitempty"` // 是否是ACK响应
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}
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type Connection struct {
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UID string
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Room *Room
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Conn *websocket.Conn
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Send chan *WSMessage
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}
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func (c *Connection) ReadPump() {
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defer func() {
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c.Room.Unregister <- c
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c.Conn.Close()
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}()
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c.Conn.SetReadLimit(512)
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c.Conn.SetReadDeadline(time.Now().Add(pongWait))
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c.Conn.SetPongHandler(func(string) error {
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c.Conn.SetReadDeadline(time.Now().Add(pongWait))
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return nil
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})
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for {
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_, msg, err := c.Conn.ReadMessage()
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if err != nil {
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log.Println("read error:", err)
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break
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}
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var wsMsg WSMessage
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if err := json.Unmarshal(msg, &wsMsg); err != nil {
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log.Println("unmarshal error:", err)
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continue
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}
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ack := &WSMessage{
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Type: wsMsg.Type,
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Ack: true,
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}
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c.Send <- ack
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switch wsMsg.Type {
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case "broadcast":
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c.Room.Broadcast <- &BroadcastPayload{Message: &wsMsg}
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case "direct":
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c.Room.Direct <- &DirectPayload{To: wsMsg.To, Message: &wsMsg}
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}
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}
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}
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func (c *Connection) WritePump() {
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ticker := time.NewTicker(pingPeriod)
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defer func() {
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ticker.Stop()
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c.Conn.Close()
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}()
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for {
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select {
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case msg, ok := <-c.Send:
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c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
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if !ok {
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c.Conn.WriteMessage(websocket.CloseMessage, []byte{})
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return
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}
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if err := c.Conn.WriteJSON(msg); err != nil {
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return
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}
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case <-ticker.C:
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c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
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if err := c.Conn.WriteMessage(websocket.PingMessage, nil); err != nil {
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return
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}
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}
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}
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}
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