From 3b443bc9c80c39483f28a042886f53feb4aeed96 Mon Sep 17 00:00:00 2001
From: Simon Zolin <s.zolin@adguard.com>
Date: Wed, 23 Oct 2019 19:31:34 +0300
Subject: [PATCH] * dns: enable DNS message compression

---
 dnsforward/dnsforward.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dnsforward/dnsforward.go b/dnsforward/dnsforward.go
index d2acb049..daa79efe 100644
--- a/dnsforward/dnsforward.go
+++ b/dnsforward/dnsforward.go
@@ -432,7 +432,6 @@ func (s *Server) handleDNSRequest(p *proxy.Proxy, d *proxy.DNSContext) error {
 
 		if res.Reason == dnsfilter.ReasonRewrite && len(res.CanonName) != 0 {
 			d.Req.Question[0] = originalQuestion
-			d.Res.Question[0] = originalQuestion
 
 			if len(d.Res.Answer) != 0 {
 				answer = append(answer, d.Res.Answer...) // host -> IP
@@ -441,6 +440,10 @@ func (s *Server) handleDNSRequest(p *proxy.Proxy, d *proxy.DNSContext) error {
 		}
 	}
 
+	if d.Res != nil {
+		d.Res.Compress = true // some devices require DNS message compression
+	}
+
 	shouldLog := true
 	msg := d.Req