117 lines
2.6 KiB
Go
117 lines
2.6 KiB
Go
package ws
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import (
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"encoding/json"
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"github.com/gorilla/websocket"
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"log"
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"time"
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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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maxMessageSize = 512
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)
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// Client WebSocket 客户端连接
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type Client struct {
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Hub *Hub
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Conn *websocket.Conn
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Send chan *WsMessage
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Imei string
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DeviceId int
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}
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func (c *Client) ReadPump() {
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defer func() {
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c.Hub.Unregister <- c
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c.Conn.Close()
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}()
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c.Conn.SetReadLimit(maxMessageSize)
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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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_, message, err := c.Conn.ReadMessage()
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if err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
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log.Printf("读取错误: %v", err)
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}
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return
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}
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// 检查是否是字符串 "PING"
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if string(message) == "PING" {
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c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
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err := c.Conn.WriteMessage(websocket.TextMessage, []byte("PONG"))
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if err != nil {
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log.Printf("发送 PONG 响应失败: %v", err)
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return
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}
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c.Conn.SetReadDeadline(time.Now().Add(pongWait))
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continue
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}
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// 处理 JSON 消息
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var msg struct {
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Type string `json:"Type"`
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}
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if err := json.Unmarshal(message, &msg); err == nil && msg.Type == "ping" {
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c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
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response := struct {
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Type string `json:"Type"`
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}{
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Type: "pong",
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}
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responseData, _ := json.Marshal(response)
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err := c.Conn.WriteMessage(websocket.TextMessage, responseData)
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if err != nil {
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log.Printf("发送 pong 响应失败: %v", err)
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return
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}
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c.Conn.SetReadDeadline(time.Now().Add(pongWait))
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}
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}
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}
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func (c *Client) 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 message, ok := <-c.Send:
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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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c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
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log.Printf("准备发送消息到 WebSocket: IMEI=%s, Data=%s", message.IMEI, message.Data)
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// 直接发送原始消息字符串
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err := c.Conn.WriteMessage(websocket.TextMessage, []byte(message.Data))
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if err != nil {
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log.Printf("发送消息失败: %v", err)
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return
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}
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log.Printf("消息发送成功: IMEI=%s", message.IMEI)
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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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log.Printf("发送 ping 失败: %v", err)
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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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