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