118 lines
1.8 KiB
Go
118 lines
1.8 KiB
Go
package sonic
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import (
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"bufio"
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"bytes"
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"errors"
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"fmt"
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"io"
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"net"
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"strings"
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)
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var ClosedError = errors.New("sonic connection is closed")
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type Connection struct {
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Host string
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Port int
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Password string
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Channel Channel
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reader *bufio.Reader
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conn net.Conn
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closed bool
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}
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func (c *Connection) Connect() error {
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if !IsChannelValid(c.Channel) {
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return errors.New("invalid channel name")
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}
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", c.Host, c.Port))
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if err != nil {
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return err
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} else {
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c.conn = conn
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c.reader = bufio.NewReader(c.conn)
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err := c.write(fmt.Sprintf("START %s %s", c.Channel, c.Password))
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if err != nil {
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return err
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}
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_, err = c.read()
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_, err = c.read()
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if err != nil {
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return err
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}
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return nil
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}
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}
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func (c *Connection) read() (string, error) {
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if c.closed {
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return "", ClosedError
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}
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buffer := bytes.Buffer{}
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for {
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line, isPrefix, err := c.reader.ReadLine()
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buffer.Write(line)
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if err != nil {
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if err == io.EOF {
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c.clean()
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}
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return "", err
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}
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if !isPrefix {
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break
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}
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}
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str := buffer.String()
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if strings.HasPrefix(str, "ERR ") {
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return "", errors.New(str[4:])
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}
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return str, nil
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}
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func (c Connection) write(str string) error {
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if c.closed {
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return ClosedError
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}
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_, err := c.conn.Write([]byte(str + "\r\n"))
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return err
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}
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func (c *Connection) Quit() error {
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err := c.write("QUIT")
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if err != nil {
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return err
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}
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// should get ENDED
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_, err = c.read()
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c.clean()
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return err
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}
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func (c *Connection) Ping() error {
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err := c.write("PING")
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if err != nil {
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fmt.Println("err write")
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return err
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}
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// should get PONG
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_, err = c.read()
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if err != nil {
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fmt.Println("err read")
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return err
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}
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return nil
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}
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func (c *Connection) clean() {
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c.closed = true
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_ = c.conn.Close()
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c.conn = nil
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c.reader = nil
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}
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