lc_garage/server/service/uhf/tcp_reader.go

package uhf

import (
	"errors"
	"net"
	"time"
)

type TCPReader struct {
	IP          string
	Port        int
	conn        net.Conn
	isConnected bool
	readBufSize int // 读取缓冲区大小
}

func (t *TCPReader) CloseRelay1(validTime byte) error {
	//TODO implement me
	panic("implement me")
}

func (t *TCPReader) ReleaseRelay1() error {
	//TODO implement me
	panic("implement me")
}

func (t *TCPReader) CloseRelay2(validTime byte) error {
	//TODO implement me
	panic("implement me")
}

func (t *TCPReader) ReleaseRelay2() error {
	//TODO implement me
	panic("implement me")
}

// 初始化时设置默认缓冲区
func NewTCPReader(ip string, port int) *TCPReader {
	return &TCPReader{
		IP:          ip,
		Port:        port,
		readBufSize: 1024, // 默认1K缓冲区
	}
}

// Connect 建立TCP连接（原有逻辑不变）
func (t *TCPReader) Connect() error {
	addr := net.JoinHostPort(t.IP, string(rune(t.Port)))
	conn, err := net.DialTimeout("tcp", addr, 5*time.Second)
	if err != nil {
		t.isConnected = false
		return err
	}
	t.conn = conn
	t.isConnected = true
	return nil
}

// Disconnect 断开连接（原有逻辑不变）
func (t *TCPReader) Disconnect() error {
	if t.conn != nil {
		err := t.conn.Close()
		t.isConnected = false
		return err
	}
	return nil
}

// IsConnected 检查状态（原有逻辑不变）
func (t *TCPReader) IsConnected() bool {
	return t.isConnected
}

// SendData 仅发送数据（多设备批量发送用）
func (t *TCPReader) SendData(data []byte) error {
	if !t.isConnected {
		return errors.New("TCP连接未建立")
	}
	_, err := t.conn.Write(data)
	return err
}

// ReadData 阻塞读取TCP数据（多设备监听用）
func (t *TCPReader) ReadData() ([]byte, error) {
	if !t.isConnected {
		return nil, errors.New("TCP连接未建立")
	}
	buf := make([]byte, t.readBufSize)
	n, err := t.conn.Read(buf)
	if err != nil {
		t.isConnected = false // 读失败标记为断开
		return nil, err
	}
	return buf[:n], nil
}

// SendAndRecv 发送并等待响应（一问一答，多设备指令交互用）
func (t *TCPReader) SendAndRecv(data []byte) ([]byte, error) {
	if err := t.SendData(data); err != nil {
		return nil, err
	}
	// 设置读超时，避免永久阻塞
	t.conn.SetReadDeadline(time.Now().Add(3 * time.Second))
	defer t.conn.SetReadDeadline(time.Time{}) // 恢复默认
	return t.ReadData()
}