add rtcp

pkg/handler/socks/v4/metadata.go

@@ -4,12 +4,7 @@ import (
 	"time"
 
 	"github.com/go-gost/gost/pkg/auth"
-)
-
-const (
-	authsKey    = "auths"
-	readTimeout = "readTimeout"
-	retryCount  = "retry"
+	md "github.com/go-gost/gost/pkg/metadata"
 )
 
 type metadata struct {
@@ -17,3 +12,25 @@ type metadata struct {
 	readTimeout   time.Duration
 	retryCount    int
 }
+
+func (h *socks4Handler) parseMetadata(md md.Metadata) (err error) {
+	const (
+		authsKey    = "auths"
+		readTimeout = "readTimeout"
+		retryCount  = "retry"
+	)
+
+	if v, _ := md.Get(authsKey).([]interface{}); len(v) > 0 {
+		authenticator := auth.NewLocalAuthenticator(nil)
+		for _, auth := range v {
+			if v, _ := auth.(string); v != "" {
+				authenticator.Add(v, "")
+			}
+		}
+		h.md.authenticator = authenticator
+	}
+
+	h.md.readTimeout = md.GetDuration(readTimeout)
+	h.md.retryCount = md.GetInt(retryCount)
+	return
+}