From c2fac407656658ad966261c51ca40b1014674cee Mon Sep 17 00:00:00 2001
From: aler9 <46489434+aler9@users.noreply.github.com>
Date: Tue, 21 Jan 2020 13:00:36 +0100
Subject: [PATCH] fix: set header keys only if not set previously

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

diff --git a/utils.go b/utils.go
index 174b26c8..a3a754ad 100644
--- a/utils.go
+++ b/utils.go
@@ -93,7 +93,10 @@ func readHeaders(rb *bufio.Reader) (map[string]string, error) {
 			return nil, err
 		}
 
-		ret[key] = val
+		// set only if not set previously
+		if _, ok := ret[key]; !ok {
+			ret[key] = val
+		}
 	}
 
 	return ret, nil