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net: clarify IP.IsGlobalUnicast docs

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Fixes #18181.

Change-Id: I5eed99dfb7b013aa4d4e668e95a97f5bb643d307
Reviewed-on: https://go-review.googlesource.com/34531
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Mikio Hara 2016-12-16 18:45:55 +09:00 committed by Brad Fitzpatrick
parent ecc4474341
commit 7799022cdd
1 changed files with 6 additions and 0 deletions
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6
src/net/ip.go
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@ -153,6 +153,12 @@ func (ip IP) IsLinkLocalUnicast() bool {
// IsGlobalUnicast reports whether ip is a global unicast // IsGlobalUnicast reports whether ip is a global unicast
// address. // address.
//
// The identification of global unicast addresses uses address type
// identification as defined in RFC 1122, RFC 4632 and RFC 4291 with
// the exception of IPv4 directed broadcast addresses.
// It returns true even if ip is in IPv4 private address space or
// local IPv6 unicast address space.
func (ip IP) IsGlobalUnicast() bool { func (ip IP) IsGlobalUnicast() bool {
return (len(ip) == IPv4len || len(ip) == IPv6len) && return (len(ip) == IPv4len || len(ip) == IPv6len) &&
!ip.Equal(IPv4bcast) && !ip.Equal(IPv4bcast) &&