/
client.go
113 lines (91 loc) · 1.94 KB
/
client.go
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package inetd
import (
"bufio"
"errors"
"io"
"net"
"sync"
"time"
)
// https://www.freebsd.org/cgi/man.cgi?query=inetd&sektion=8
type Addr string
func (a *Addr) Network() string {
return string(*a)
}
func (a *Addr) String() string {
return string(*a)
}
type IOClient struct {
in *bufio.Reader
fin io.ReadCloser
out io.WriteCloser
remoteAddr net.Addr
localAddr net.Addr
}
func NewIOClient(in io.ReadCloser, out io.WriteCloser) *IOClient {
var local = Addr("127.0.0.1")
return &IOClient{
in: bufio.NewReader(in),
fin: in,
out: out,
remoteAddr: &local,
localAddr: &local,
}
}
func (c *IOClient) Read(buf []byte) (n int, err error) {
return c.in.Read(buf)
}
func (c *IOClient) Write(buf []byte) (n int, err error) {
return c.out.Write(buf)
}
func (c *IOClient) Close() error {
var err error
if errIn := c.fin.Close(); err == nil {
err = errIn
}
if errClose := c.out.Close(); err == nil {
err = errClose
}
return err
}
func (c *IOClient) LocalAddr() net.Addr {
return c.localAddr
}
// TODO: This might come in some environ var?
func (c *IOClient) RemoteAddr() net.Addr {
return c.remoteAddr
}
// TODO: Implement with select() or somehow else. At least they set a flag.
func (c *IOClient) SetDeadline(t time.Time) error {
return nil
}
func (c *IOClient) SetReadDeadline(t time.Time) error {
return nil
}
func (c *IOClient) SetWriteDeadline(t time.Time) error {
return nil
}
type Listener struct {
client *IOClient
m sync.Mutex
err error
}
var errAccepted = errors.New("connection already accepted")
func NewListener(c *IOClient) *Listener {
return &Listener{client: c}
}
func (l *Listener) Accept() (c net.Conn, err error) {
l.m.Lock()
defer l.m.Unlock()
if l.err == nil {
l.err = errAccepted
return net.Conn(l.client), nil
}
return nil, l.err
}
func (l *Listener) Close() error {
return nil
}
func (l *Listener) Addr() net.Addr {
return l.client.LocalAddr()
}