go tcpsockopt_unix 源码
golang tcpsockopt_unix 代码
文件路径：/src/net/tcpsockopt_unix.go
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build aix || freebsd || linux || netbsd
package net
import (
"runtime"
"syscall"
"time"
)
func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
// The kernel expects seconds so round to next highest second.
secs := int(roundDurationUp(d, time.Second))
if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, secs); err != nil {
return wrapSyscallError("setsockopt", err)
}
err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, secs)
runtime.KeepAlive(fd)
return wrapSyscallError("setsockopt", err)
}
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