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Inbounds & Outbounds: TCP KeepAlive better default value (#4931)

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From https://github.com/XTLS/Xray-core/pull/4927
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风扇滑翔翼 2025-07-25 20:06:05 +08:00 • committed by GitHub
parent 87d8b97d9a
commit eb433d9462
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3 changed files with 46 additions and 28 deletions
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20
transport/internet/sockopt_linux.go
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@ -64,26 +64,6 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
}
}
if config.TcpKeepAliveInterval > 0 || config.TcpKeepAliveIdle > 0 {
if config.TcpKeepAliveInterval > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return errors.New("failed to set TCP_KEEPINTVL", err)
}
}
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(config.TcpKeepAliveIdle)); err != nil {
return errors.New("failed to set TCP_KEEPIDLE", err)
}
}
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return errors.New("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return errors.New("failed to unset SO_KEEPALIVE", err)
}
}
if config.TcpCongestion != "" {
if err := syscall.SetsockoptString(int(fd), syscall.SOL_TCP, syscall.TCP_CONGESTION, config.TcpCongestion); err != nil {
return errors.New("failed to set TCP_CONGESTION", err)