2019-02-20 19:51:33 +01:00
|
|
|
// +build !appengine
|
2018-09-24 18:30:39 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
*
|
|
|
|
* 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
|
|
|
|
}
|
|
|
|
}
|