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repo-template/vendor/golang.org/x/net/icmp/ipv6.go
2018-02-07 10:03:05 +01:00

23 lines
553 B
Go

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package icmp
import (
"net"
"golang.org/x/net/internal/iana"
)
const ipv6PseudoHeaderLen = 2*net.IPv6len + 8
// IPv6PseudoHeader returns an IPv6 pseudo header for checksum
// calculation.
func IPv6PseudoHeader(src, dst net.IP) []byte {
b := make([]byte, ipv6PseudoHeaderLen)
copy(b, src.To16())
copy(b[net.IPv6len:], dst.To16())
b[len(b)-1] = byte(iana.ProtocolIPv6ICMP)
return b
}