feat(socket): 实现 WebSocket 代理功能

- 新增 WebSocket 中间件，支持连接到指定端口的 TCP 服务器
- 在 ServerEvent 中添加错误日志输出
- 优化 ClientData 解析逻辑，增加类型断言
- 更新 index.html，添加 socket 代理配置

modules/base/middleware/websocket.go

@@ -1,9 +1,16 @@
 package middleware
 
 import (
-	"fmt"
+	"bufio"
+	"context"
+	"encoding/binary"
+	"io"
+	"log"
+	"net"
 	"time"
 
+	"github.com/gogf/gf/v2/os/glog"
+	"github.com/gogf/gf/v2/util/gconv"
 	"github.com/lxzan/gws"
 )
 
@@ -11,10 +18,51 @@ const PingInterval = 10 * time.Second
 
 type Handler struct {
 	gws.BuiltinEventHandler
+	port   int
+	target net.Conn
 }
 
 func (c *Handler) OnOpen(socket *gws.Conn) {
+	target, err := net.Dial("tcp", "127.0.0.1:"+gconv.String(c.port))
 
+	if err != nil {
+		glog.Debug(context.Background(), "连接失败")
+	}
+	c.target = target
+	//errChan := make(chan error, 2)
+
+	go func(conn net.Conn, socket *gws.Conn) {
+		reader := bufio.NewReader(conn)
+	LOOP:
+		for {
+
+			//	select {
+			//	default:
+			packlen, err := reader.Peek(4)
+
+			if err != nil {
+
+				break LOOP
+			}
+
+			length := int32(binary.BigEndian.Uint32(packlen))
+
+			data := make([]byte, length)
+			io.ReadFull(reader, data)
+
+			//pack_Ver := data[4] //因为包体已经解析，所以这里直接取0
+			//	var pack = make([]byte, length)
+
+			socket.WriteMessage(gws.OpcodeBinary, data)
+			//t.event.RecvHandler(pack)
+			//	client.OnReceiveBase(client, pack, length)
+
+		}
+	}(c.target, socket)
+	//err = <-errChan
+	if err != io.EOF {
+		log.Println("proxy error:", err)
+	}
 }
 
 func (c *Handler) OnPing(socket *gws.Conn, payload []byte) {
@@ -25,7 +73,20 @@ func (c *Handler) OnPing(socket *gws.Conn, payload []byte) {
 func (c *Handler) OnPong(socket *gws.Conn, payload []byte) {}
 
 func (c *Handler) OnMessage(socket *gws.Conn, gwsmessage *gws.Message) {
-	fmt.Println(gwsmessage.Bytes())
+	if c.target != nil {
+		c.target.Write(gwsmessage.Bytes())
+	}
+	//fmt.Println(gwsmessage.Bytes())
+
+}
+
+func (c *Handler) OnClose(socket *gws.Conn, err error) {
+
+	glog.Debug(context.Background(), "断开连接")
+	if c.target != nil {
+		c.target.Close()
+
+	}
 
 }