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conn.go
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conn.go
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package serial
import (
"context"
"errors"
"io"
"net"
"time"
)
type conn struct {
port io.ReadWriteCloser
laddr net.Addr
raddr net.Addr
cancel context.CancelFunc
}
func NewConn(port io.ReadWriteCloser, addr net.Addr, cancel context.CancelFunc) net.Conn {
return &conn{
port: port,
laddr: addr,
raddr: addr,
cancel: cancel,
}
}
func (c *conn) Read(b []byte) (n int, err error) {
return c.port.Read(b)
}
func (c *conn) Write(b []byte) (n int, err error) {
return c.port.Write(b)
}
func (c *conn) LocalAddr() net.Addr {
return c.laddr
}
func (c *conn) RemoteAddr() net.Addr {
return c.raddr
}
func (c *conn) SetDeadline(t time.Time) error {
return &net.OpError{Op: "set", Net: "com", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
}
func (c *conn) SetReadDeadline(t time.Time) error {
return &net.OpError{Op: "set", Net: "com", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
}
func (c *conn) SetWriteDeadline(t time.Time) error {
return &net.OpError{Op: "set", Net: "com", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
}
func (c *conn) Close() (err error) {
if c.cancel != nil {
c.cancel()
}
return c.port.Close()
}
type Addr struct {
Port string
}
func (a *Addr) Network() string {
return "serial"
}
func (a *Addr) String() string {
return a.Port
}