From 281c2fa7f4860feed31843007614b7695fb605bd Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Wed, 16 May 2018 11:31:47 +0200
Subject: [PATCH] Don't add padding if the query matches the block size

Fixes #446
---
 dnscrypt-proxy/xtransport.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dnscrypt-proxy/xtransport.go b/dnscrypt-proxy/xtransport.go
index eda95c59..8e966cdb 100644
--- a/dnscrypt-proxy/xtransport.go
+++ b/dnscrypt-proxy/xtransport.go
@@ -264,7 +264,9 @@ func (xTransport *XTransport) DoHQuery(useGet bool, url *url.URL, body []byte, t
 		encBody := base64.RawURLEncoding.EncodeToString(body)
 		qs.Add("body", encBody)
 		qs.Add("dns", encBody)
-		qs.Add("random_padding", *padding)
+		if padding != nil {
+			qs.Add("random_padding", *padding)
+		}
 		url2 := *url
 		url2.RawQuery = qs.Encode()
 		return xTransport.Get(&url2, dataType, timeout)