From 3165084a7bfa0679993e27d5bf3a90688eae9a2d Mon Sep 17 00:00:00 2001
From: pixelbender <pixelbender@yandex.ru>
Date: Wed, 8 Jun 2016 12:22:52 +0300
Subject: [PATCH] Suppress proxy error for truncated responses (#154)

* suppress proxy error for truncated responses

* Add proxy truncated error suppression for TCP too
---
 middleware/proxy/reverseproxy.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/middleware/proxy/reverseproxy.go b/middleware/proxy/reverseproxy.go
index 3f36dac17..071452ecb 100644
--- a/middleware/proxy/reverseproxy.go
+++ b/middleware/proxy/reverseproxy.go
@@ -26,9 +26,15 @@ func (p ReverseProxy) ServeDNS(w dns.ResponseWriter, r *dns.Msg, extra []dns.RR)
 		reply, err = middleware.Exchange(p.Client.UDP, r, p.Host)
 	}
 
+	if reply != nil && reply.Truncated {
+		// Suppress proxy error for truncated responses
+		err = nil
+	}
+
 	if err != nil {
 		return err
 	}
+
 	reply.Compress = true
 	reply.Id = r.Id
 	w.WriteMsg(reply)