1 // Copyright 2015 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
13 func setKeepAlivePeriod(fd
*netFD
, d time
.Duration
) error
{
14 // The kernel expects milliseconds so round to next highest
16 msecs
:= int(roundDurationUp(d
, time
.Millisecond
))
19 // syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, secs)
20 // here, but we can't because Solaris does not have TCP_KEEPINTVL.
21 // Solaris has TCP_KEEPALIVE_ABORT_THRESHOLD, but it's not the same
22 // thing, it refers to the total time until aborting (not between
23 // probes), and it uses an exponential backoff algorithm instead of
24 // waiting the same time between probes. We can't hope for the best
25 // and do it anyway, like on Darwin, because Solaris might eventually
26 // allocate a constant with a different meaning for the value of
27 // TCP_KEEPINTVL on illumos.
29 err
:= fd
.pfd
.SetsockoptInt(syscall
.IPPROTO_TCP
, syscall
.TCP_KEEPALIVE_THRESHOLD
, msecs
)
31 return wrapSyscallError("setsockopt", err
)