From f54b49c090dd38a171a8532999cb8c3794ecde14 Mon Sep 17 00:00:00 2001
From: Star Brilliant <coder@poorlab.com>
Date: Mon, 2 Jul 2018 13:48:05 +0800
Subject: [PATCH] Disable preventing capitalization scrambling

---
 doh-client/google.go | 3 +--
 doh-client/ietf.go   | 3 +--
 doh-server/google.go | 1 -
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/doh-client/google.go b/doh-client/google.go
index a6cb5c5..c5fdcf8 100644
--- a/doh-client/google.go
+++ b/doh-client/google.go
@@ -51,8 +51,7 @@ func (c *Client) generateRequestGoogle(w dns.ResponseWriter, r *dns.Msg, isTCP b
 		}
 	}
 	question := &r.Question[0]
-	// knot-resolver scrambles capitalization, I think it is unfriendly to cache
-	questionName := strings.ToLower(question.Name)
+	questionName := question.Name
 	questionType := ""
 	if qtype, ok := dns.TypeToString[question.Qtype]; ok {
 		questionType = qtype
diff --git a/doh-client/ietf.go b/doh-client/ietf.go
index 6aae281..0117e72 100644
--- a/doh-client/ietf.go
+++ b/doh-client/ietf.go
@@ -53,8 +53,7 @@ func (c *Client) generateRequestIETF(w dns.ResponseWriter, r *dns.Msg, isTCP boo
 	}
 
 	question := &r.Question[0]
-	// knot-resolver scrambles capitalization, I think it is unfriendly to cache
-	questionName := strings.ToLower(question.Name)
+	questionName := question.Name
 	questionType := ""
 	if qtype, ok := dns.TypeToString[question.Qtype]; ok {
 		questionType = qtype
diff --git a/doh-server/google.go b/doh-server/google.go
index 3fbc927..c54d511 100644
--- a/doh-server/google.go
+++ b/doh-server/google.go
@@ -46,7 +46,6 @@ func (s *Server) parseRequestGoogle(w http.ResponseWriter, r *http.Request) *DNS
 			errtext: "Invalid argument value: \"name\"",
 		}
 	}
-	name = strings.ToLower(name)
 	if punycode, err := idna.ToASCII(name); err == nil {
 		name = punycode
 	} else {