| // 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. |
| |
| package net |
| |
| import ( |
| "runtime" |
| "syscall" |
| "time" |
| ) |
| |
| const sysTCP_KEEPINTVL = 0x101 |
| |
| func setKeepAlivePeriod(fd *netFD, d time.Duration) error { |
| // The kernel expects seconds so round to next highest second. |
| d += (time.Second - time.Nanosecond) |
| secs := int(d.Seconds()) |
| if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, sysTCP_KEEPINTVL, secs); err != nil { |
| return wrapSyscallError("setsockopt", err) |
| } |
| err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs) |
| runtime.KeepAlive(fd) |
| return wrapSyscallError("setsockopt", err) |
| } |
