add ssh tunnel

pkg/listener/tcp/listener.go

@@ -3,7 +3,6 @@ package tcp
 import (
 	"net"
 
-	util "github.com/go-gost/gost/pkg/common/util"
 	"github.com/go-gost/gost/pkg/listener"
 	"github.com/go-gost/gost/pkg/logger"
 	md "github.com/go-gost/gost/pkg/metadata"
@@ -46,14 +45,6 @@ func (l *tcpListener) Init(md md.Metadata) (err error) {
 		return
 	}
 
-	if l.md.keepAlive {
-		l.Listener = &util.TCPKeepAliveListener{
-			TCPListener:     ln,
-			KeepAlivePeriod: l.md.keepAlivePeriod,
-		}
-		return
-	}
-
 	l.Listener = ln
 	return
 }

pkg/listener/tcp/metadata.go

@@ -1,28 +1,12 @@
 package tcp
 
 import (
-	"time"
-
 	md "github.com/go-gost/gost/pkg/metadata"
 )
 
-const (
-	defaultKeepAlivePeriod = 180 * time.Second
-)
-
 type metadata struct {
-	keepAlive       bool
-	keepAlivePeriod time.Duration
 }
 
 func (l *tcpListener) parseMetadata(md md.Metadata) (err error) {
-	const (
-		keepAlive       = "keepAlive"
-		keepAlivePeriod = "keepAlivePeriod"
-	)
-
-	l.md.keepAlive = md.GetBool(keepAlive)
-	l.md.keepAlivePeriod = md.GetDuration(keepAlivePeriod)
-
 	return
 }