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-rw-r--r--vendor/golang.org/x/net/lex/httplex/httplex.go39
1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/lex/httplex/httplex.go b/vendor/golang.org/x/net/lex/httplex/httplex.go
index bd0ec24..20f2b89 100644
--- a/vendor/golang.org/x/net/lex/httplex/httplex.go
+++ b/vendor/golang.org/x/net/lex/httplex/httplex.go
@@ -10,8 +10,11 @@
package httplex
import (
+ "net"
"strings"
"unicode/utf8"
+
+ "golang.org/x/net/idna"
)
var isTokenTable = [127]bool{
@@ -310,3 +313,39 @@ func ValidHeaderFieldValue(v string) bool {
}
return true
}
+
+func isASCII(s string) bool {
+ for i := 0; i < len(s); i++ {
+ if s[i] >= utf8.RuneSelf {
+ return false
+ }
+ }
+ return true
+}
+
+// PunycodeHostPort returns the IDNA Punycode version
+// of the provided "host" or "host:port" string.
+func PunycodeHostPort(v string) (string, error) {
+ if isASCII(v) {
+ return v, nil
+ }
+
+ host, port, err := net.SplitHostPort(v)
+ if err != nil {
+ // The input 'v' argument was just a "host" argument,
+ // without a port. This error should not be returned
+ // to the caller.
+ host = v
+ port = ""
+ }
+ host, err = idna.ToASCII(host)
+ if err != nil {
+ // Non-UTF-8? Not representable in Punycode, in any
+ // case.
+ return "", err
+ }
+ if port == "" {
+ return host, nil
+ }
+ return net.JoinHostPort(host, port), nil
+}