1// +build go1.9
2
3/*
4 *
5 * Copyright 2018 gRPC authors.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *     http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 */
20
21package credentials
22
23import (
24	"crypto/tls"
25	"errors"
26	"net"
27	"syscall"
28)
29
30type tlsConn struct {
31	*tls.Conn
32	rawConn net.Conn
33}
34
35// implements the syscall.Conn interface
36func (c tlsConn) SyscallConn() (syscall.RawConn, error) {
37	conn, ok := c.rawConn.(syscall.Conn)
38	if !ok {
39		return nil, errors.New("RawConn does not implement syscall.Conn")
40	}
41	return conn.SyscallConn()
42}
43