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54 lines
1.2 KiB
54 lines
1.2 KiB
package internet
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import (
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"strings"
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"syscall"
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)
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const (
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// For incoming connections.
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TCP_FASTOPEN = 23
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// For out-going connections.
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TCP_FASTOPEN_CONNECT = 30
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)
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func applyOutboundSocketOptions(network string, address string, fd uintptr, config *SocketConfig) error {
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if config.Mark != 0 {
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if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, int(config.Mark)); err != nil {
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return err
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}
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}
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if strings.HasPrefix(network, "tcp") {
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switch config.Tfo {
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case SocketConfig_Enable:
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if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN_CONNECT, 1); err != nil {
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return err
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}
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case SocketConfig_Disable:
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if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN_CONNECT, 0); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig) error {
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if strings.HasPrefix(network, "tcp") {
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switch config.Tfo {
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case SocketConfig_Enable:
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if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN, 1); err != nil {
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return err
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}
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case SocketConfig_Disable:
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if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN, 0); err != nil {
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return err
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}
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}
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}
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return nil
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}
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