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Diffstat (limited to 'src/net/http/client.go')
| -rw-r--r-- | src/net/http/client.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/net/http/client.go b/src/net/http/client.go index ee6de24fc1..8fc348fe5d 100644 --- a/src/net/http/client.go +++ b/src/net/http/client.go @@ -1014,6 +1014,12 @@ func isDomainOrSubdomain(sub, parent string) bool { if sub == parent { return true } + // If sub contains a :, it's probably an IPv6 address (and is definitely not a hostname). + // Don't check the suffix in this case, to avoid matching the contents of a IPv6 zone. + // For example, "::1%.www.example.com" is not a subdomain of "www.example.com". + if strings.ContainsAny(sub, ":%") { + return false + } // If sub is "foo.example.com" and parent is "example.com", // that means sub must end in "."+parent. // Do it without allocating. |