1// +build linux,!appengine
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 channelz
22
23import (
24	"syscall"
25)
26
27// GetSocketOption gets the socket option info of the conn.
28func GetSocketOption(socket interface{}) *SocketOptionData {
29	c, ok := socket.(syscall.Conn)
30	if !ok {
31		return nil
32	}
33	data := &SocketOptionData{}
34	if rawConn, err := c.SyscallConn(); err == nil {
35		rawConn.Control(data.Getsockopt)
36		return data
37	}
38	return nil
39}
40