qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-26 14:08:37 -07:00
Code Releases Activity

net: classify site-local unicast in address selection

Browse Source 
This change adds site-local unicast classification for users still using
the deprecated addresses internally.

Change-Id: If50870c6d4a85fe471c002b161eec59efcebe2f4
Reviewed-on: https://go-review.googlesource.com/12344
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Mikio Hara 2015-07-17 17:31:49 +09:00 committed by Brad Fitzpatrick
parent 90c668d1af
commit aadd84e0c4
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/net/addrselect.go
View File

@ -328,11 +328,15 @@ func classifyScope(ip IP) scope {
if ip.IsLoopback() || ip.IsLinkLocalUnicast() {
return scopeLinkLocal
}
if len(ip) == IPv6len && ip.To4() == nil && ip.IsMulticast() {
ipv6 := len(ip) == IPv6len && ip.To4() == nil
if ipv6 && ip.IsMulticast() {
return scope(ip[1] & 0xf)
}
// TODO: are there unicast scopeAdminLocal, scopeSiteLocal,
// scopeOrgLocal? Better question: are those even used?
// Site-local addresses are defined in RFC 3513 section 2.5.6
// (and deprecated in RFC 3879).
if ipv6 && ip[0] == 0xfe && ip[1]&0xc0 == 0xc0 {
return scopeSiteLocal
}
return scopeGlobal
}

1
src/net/addrselect_test.go
View File

@ -169,6 +169,7 @@ func TestRFC6724ClassifyScope(t *testing.T) {
{ParseIP("127.0.0.1"), scopeLinkLocal}, // rfc6724#section-3.2
{ParseIP("::1"), scopeLinkLocal}, // rfc4007#section-4
{ParseIP("169.254.1.2"), scopeLinkLocal}, // rfc6724#section-3.2
{ParseIP("fec0::1"), scopeSiteLocal},
{ParseIP("8.8.8.8"), scopeGlobal},
{ParseIP("ff02::"), scopeLinkLocal}, // IPv6 multicast