add unix domain socket

listener/unix/listener.go

@@ -0,0 +1,67 @@
+package unix
+
+import (
+	"net"
+
+	"github.com/go-gost/core/listener"
+	"github.com/go-gost/core/logger"
+	md "github.com/go-gost/core/metadata"
+	admission "github.com/go-gost/x/admission/wrapper"
+	climiter "github.com/go-gost/x/limiter/conn/wrapper"
+	limiter "github.com/go-gost/x/limiter/traffic/wrapper"
+	metrics "github.com/go-gost/x/metrics/wrapper"
+	"github.com/go-gost/x/registry"
+)
+
+func init() {
+	registry.ListenerRegistry().Register("unix", NewListener)
+}
+
+type unixListener struct {
+	ln      net.Listener
+	logger  logger.Logger
+	md      metadata
+	options listener.Options
+}
+
+func NewListener(opts ...listener.Option) listener.Listener {
+	options := listener.Options{}
+	for _, opt := range opts {
+		opt(&options)
+	}
+	return &unixListener{
+		logger:  options.Logger,
+		options: options,
+	}
+}
+
+func (l *unixListener) Init(md md.Metadata) (err error) {
+	if err = l.parseMetadata(md); err != nil {
+		return
+	}
+
+	ln, err := net.Listen("unix", l.options.Addr)
+	if err != nil {
+		return
+	}
+
+	ln = metrics.WrapListener(l.options.Service, ln)
+	ln = admission.WrapListener(l.options.Admission, ln)
+	ln = limiter.WrapListener(l.options.TrafficLimiter, ln)
+	ln = climiter.WrapListener(l.options.ConnLimiter, ln)
+	l.ln = ln
+
+	return
+}
+
+func (l *unixListener) Accept() (conn net.Conn, err error) {
+	return l.ln.Accept()
+}
+
+func (l *unixListener) Addr() net.Addr {
+	return l.ln.Addr()
+}
+
+func (l *unixListener) Close() error {
+	return l.ln.Close()
+}

listener/unix/metadata.go

@@ -0,0 +1,12 @@
+package unix
+
+import (
+	md "github.com/go-gost/core/metadata"
+)
+
+type metadata struct {
+}
+
+func (l *unixListener) parseMetadata(md md.Metadata) (err error) {
+	return
+}