mirror of
https://github.com/SagerNet/sing.git
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30 lines
794 B
Go
30 lines
794 B
Go
package control
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import (
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"syscall"
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"time"
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_ "unsafe"
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E "github.com/sagernet/sing/common/exceptions"
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N "github.com/sagernet/sing/common/network"
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"golang.org/x/sys/unix"
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)
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func SetKeepAlivePeriod(idle time.Duration, interval time.Duration) Func {
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return func(network, address string, conn syscall.RawConn) error {
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if N.NetworkName(network) != N.NetworkTCP {
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return nil
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}
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return Raw(conn, func(fd uintptr) error {
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return E.Errors(
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unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_KEEPIDLE, int(roundDurationUp(idle, time.Second))),
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unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_KEEPINTVL, int(roundDurationUp(interval, time.Second))),
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)
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})
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}
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}
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func roundDurationUp(d time.Duration, to time.Duration) time.Duration {
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return (d + to - 1) / to
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}
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