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testconn.go
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testconn.go
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package testconn
import (
"bytes"
"errors"
"net"
"time"
)
func New(data []byte) *Conn {
c := &Conn{
data: bytes.Split(data, []byte("SPLIT\n")),
done: make(chan struct{}),
err: make(chan error, 1),
}
return c
}
type Conn struct {
data [][]byte
// data []byte
done chan struct{}
err chan error
readDeadline *time.Timer
}
func (c *Conn) Read(b []byte) (int, error) {
if len(c.data) == 0 {
select {
case <-c.done:
return 0, errors.New("connection closed")
case err := <-c.err:
return 0, err
}
}
time.Sleep(1 * time.Millisecond)
n := copy(b, c.data[0])
c.data = c.data[1:]
return n, nil
}
func (c *Conn) Write(b []byte) (n int, err error) {
return len(b), nil
}
func (c *Conn) Close() error {
close(c.done)
return nil
}
func (c *Conn) LocalAddr() net.Addr {
return &net.TCPAddr{
IP: net.IP{127, 0, 0, 1},
Port: 49706,
}
}
func (c *Conn) RemoteAddr() net.Addr {
return &net.TCPAddr{
IP: net.IP{127, 0, 0, 1},
Port: 49706,
}
}
func (c *Conn) SetDeadline(t time.Time) error {
return nil
}
func (c *Conn) SetReadDeadline(t time.Time) error {
if c.readDeadline != nil {
c.readDeadline.Stop()
}
if t.IsZero() {
return nil
}
c.readDeadline = time.AfterFunc(time.Until(t), func() {
select {
case c.err <- errors.New("timeout"):
case <-c.done:
default:
}
})
return nil
}
func (c *Conn) SetWriteDeadline(t time.Time) error {
return nil
}