58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
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package tcp
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import (
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"fmt"
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"io"
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"log/slog"
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"net"
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)
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type TcpClient struct {
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conn *net.TCPConn
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handler func(n int, data []byte)
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}
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func StartTcpClient(rAddr string, handler func(n int, data []byte)) (*TcpClient, error) {
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raddr, addErr := net.ResolveTCPAddr("tcp", rAddr)
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if addErr != nil {
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return nil, addErr
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}
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conn, err := net.DialTCP("tcp", nil, raddr)
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if err != nil {
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return nil, err
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}
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go func() {
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for {
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data := make([]byte, 1024)
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l, err := conn.Read(data)
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if err != nil {
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if err == io.EOF {
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slog.Warn(fmt.Sprintf("TCP客户端[rAddr:%s]断开连接：", rAddr))
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break
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}
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slog.Error(fmt.Sprintf("TCP客户端[rAddr:%s]读取数据异常：", rAddr), err)
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}
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handler(l, data)
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}
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}()
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return &TcpClient{conn: conn}, nil
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}
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func (c *TcpClient) Close() {
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if c.conn != nil {
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c.conn.Close()
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c.conn = nil
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slog.Info(fmt.Sprintf("TCP客户端[rAddr:%s]关闭连接", c.conn.RemoteAddr().String()))
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} else {
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slog.Info(fmt.Sprintf("TCP客户端[rAddr:%s]未连接", c.conn.RemoteAddr().String()))
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}
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}
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func (c *TcpClient) Send(data []byte) error {
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_, err := c.conn.Write(data)
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if err != nil {
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slog.Error("udp client send error", "error", err)
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return err
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}
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return nil
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}
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