102 lines
1.7 KiB
Go
102 lines
1.7 KiB
Go
package wallet
|
|
|
|
// copied from https://github.com/d4l3k/go-electrum
|
|
|
|
import (
|
|
"bufio"
|
|
"crypto/tls"
|
|
"net"
|
|
"time"
|
|
|
|
"github.com/lbryio/lbry.go/v2/extras/stop"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
type TCPTransport struct {
|
|
conn net.Conn
|
|
responses chan []byte
|
|
errors chan error
|
|
grp *stop.Group
|
|
}
|
|
|
|
func NewTransport(addr string, config *tls.Config) (*TCPTransport, error) {
|
|
var conn net.Conn
|
|
var err error
|
|
|
|
timeout := 5 * time.Second
|
|
if config != nil {
|
|
conn, err = tls.DialWithDialer(&net.Dialer{Timeout: timeout}, "tcp", addr, config)
|
|
} else {
|
|
conn, err = net.DialTimeout("tcp", addr, timeout)
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
t := &TCPTransport{
|
|
conn: conn,
|
|
responses: make(chan []byte),
|
|
errors: make(chan error),
|
|
grp: stop.New(),
|
|
}
|
|
|
|
t.grp.Add(1)
|
|
go func() {
|
|
defer t.grp.Done()
|
|
<-t.grp.Ch()
|
|
t.close()
|
|
}()
|
|
|
|
t.grp.Add(1)
|
|
go func() {
|
|
t.grp.Done()
|
|
t.listen()
|
|
}()
|
|
|
|
return t, nil
|
|
}
|
|
|
|
const delimiter = byte('\n')
|
|
|
|
func (t *TCPTransport) listen() {
|
|
reader := bufio.NewReader(t.conn)
|
|
for {
|
|
line, err := reader.ReadBytes(delimiter)
|
|
if err != nil {
|
|
t.error(err)
|
|
return
|
|
}
|
|
|
|
log.Debugf("%s -> %s", t.conn.RemoteAddr(), line)
|
|
|
|
t.responses <- line
|
|
}
|
|
}
|
|
|
|
func (t *TCPTransport) Send(body []byte) error {
|
|
log.Debugf("%s <- %s", t.conn.RemoteAddr(), body)
|
|
_, err := t.conn.Write(body)
|
|
return err
|
|
}
|
|
|
|
func (t *TCPTransport) error(err error) {
|
|
select {
|
|
case t.errors <- err:
|
|
default:
|
|
}
|
|
}
|
|
|
|
func (t *TCPTransport) Responses() <-chan []byte { return t.responses }
|
|
func (t *TCPTransport) Errors() <-chan error { return t.errors }
|
|
|
|
func (t *TCPTransport) Shutdown() {
|
|
t.grp.StopAndWait()
|
|
}
|
|
|
|
func (t *TCPTransport) close() {
|
|
err := t.conn.Close()
|
|
if err != nil {
|
|
t.error(err)
|
|
}
|
|
}
|