mirror of
https://github.com/SagerNet/sing.git
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26 lines
628 B
Go
26 lines
628 B
Go
package control
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import (
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"os"
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"syscall"
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"golang.org/x/sys/unix"
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)
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func DisableUDPFragment() Func {
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return func(network, address string, conn syscall.RawConn) error {
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return Raw(conn, func(fd uintptr) error {
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switch network {
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case "udp4":
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if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_DONTFRAG, 1); err != nil {
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return os.NewSyscallError("SETSOCKOPT IP_DONTFRAG", err)
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}
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case "udp6":
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if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_DONTFRAG, 1); err != nil {
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return os.NewSyscallError("SETSOCKOPT IPV6_DONTFRAG", err)
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}
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}
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return nil
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})
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}
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}
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