feat: sniffer support

sniffer:
  enable: true
  force: false # Overwrite domain
  sniffing:
    - tls

context/conn.go

@@ -3,8 +3,8 @@ package context
 import (
 	"net"
 
+	CN "github.com/Dreamacro/clash/common/net"
 	C "github.com/Dreamacro/clash/constant"
-
 	"github.com/gofrs/uuid"
 )
 
@@ -19,7 +19,7 @@ func NewConnContext(conn net.Conn, metadata *C.Metadata) *ConnContext {
 	return &ConnContext{
 		id:       id,
 		metadata: metadata,
-		conn:     conn,
+		conn:     CN.NewBufferedConn(conn),
 	}
 }