add pkgs from core

dialer/tls/metadata.go

@@ -0,0 +1,22 @@
+package tls
+
+import (
+	"time"
+
+	mdata "github.com/go-gost/core/metadata"
+	mdx "github.com/go-gost/x/metadata"
+)
+
+type metadata struct {
+	handshakeTimeout time.Duration
+}
+
+func (d *tlsDialer) parseMetadata(md mdata.Metadata) (err error) {
+	const (
+		handshakeTimeout = "handshakeTimeout"
+	)
+
+	d.md.handshakeTimeout = mdx.GetDuration(md, handshakeTimeout)
+
+	return
+}