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- // +build !appengine
-
- /*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
- package channelz
-
- import (
- "syscall"
-
- "golang.org/x/sys/unix"
- )
-
- // SocketOptionData defines the struct to hold socket option data, and related
- // getter function to obtain info from fd.
- type SocketOptionData struct {
- Linger *unix.Linger
- RecvTimeout *unix.Timeval
- SendTimeout *unix.Timeval
- TCPInfo *unix.TCPInfo
- }
-
- // Getsockopt defines the function to get socket options requested by channelz.
- // It is to be passed to syscall.RawConn.Control().
- func (s *SocketOptionData) Getsockopt(fd uintptr) {
- if v, err := unix.GetsockoptLinger(int(fd), syscall.SOL_SOCKET, syscall.SO_LINGER); err == nil {
- s.Linger = v
- }
- if v, err := unix.GetsockoptTimeval(int(fd), syscall.SOL_SOCKET, syscall.SO_RCVTIMEO); err == nil {
- s.RecvTimeout = v
- }
- if v, err := unix.GetsockoptTimeval(int(fd), syscall.SOL_SOCKET, syscall.SO_SNDTIMEO); err == nil {
- s.SendTimeout = v
- }
- if v, err := unix.GetsockoptTCPInfo(int(fd), syscall.SOL_TCP, syscall.TCP_INFO); err == nil {
- s.TCPInfo = v
- }
- }
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