tile38/vendor/github.com/tidwall/evio/internal/internal_darwin.go

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// Copyright 2017 Joshua J Baker. All rights reserved.
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package internal
import "syscall"
// SetKeepAlive sets the keepalive for the connection
func SetKeepAlive(fd, secs int) error {
if err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, 0x8, 1); err != nil {
return err
}
switch err := syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, 0x101, secs); err {
case nil, syscall.ENOPROTOOPT: // OS X 10.7 and earlier don't support this option
default:
return err
}
return syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs)
}