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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin freebsd linux netbsd openbsd
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func ipv4TOS(fd int) (int, error) {
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v, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_TOS)
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return 0, os.NewSyscallError("getsockopt", err)
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func setIPv4TOS(fd int, v int) error {
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err := syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_TOS, v)
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return os.NewSyscallError("setsockopt", err)
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func ipv4TTL(fd int) (int, error) {
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v, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_TTL)
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return 0, os.NewSyscallError("getsockopt", err)
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func setIPv4TTL(fd int, v int) error {
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err := syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_TTL, v)
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return os.NewSyscallError("setsockopt", err)
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func ipv4ReceiveTTL(fd int) (bool, error) {
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v, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_RECVTTL)
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return false, os.NewSyscallError("getsockopt", err)
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func setIPv4ReceiveTTL(fd int, v bool) error {
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err := syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_RECVTTL, boolint(v))
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return os.NewSyscallError("setsockopt", err)
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func ipv4HeaderPrepend(fd int) (bool, error) {
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v, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_HDRINCL)
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return false, os.NewSyscallError("getsockopt", err)
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func setIPv4HeaderPrepend(fd int, v bool) error {
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err := syscall.SetsockoptInt(fd, syscall.IPPROTO_IP, syscall.IP_HDRINCL, boolint(v))
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return os.NewSyscallError("setsockopt", err)