From db85c7bf3ae19d680f5c16cd85d06c5e11fedc5f Mon Sep 17 00:00:00 2001
From: mzabriskie <mzabriskie@gmail.com>
Date: Thu, 18 Jun 2015 21:19:46 -0600
Subject: [PATCH] Fixing issue with User-Agent getting overridden closes #69

---
 lib/adapters/http.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/adapters/http.js b/lib/adapters/http.js
index b091dc4..84a89be 100644
--- a/lib/adapters/http.js
+++ b/lib/adapters/http.js
@@ -26,7 +26,11 @@ module.exports = function httpAdapter(resolve, reject, config) {
   );
 
   // Set User-Agent (required by some servers)
-  headers['User-Agent'] = 'axios/' + pkg.version;
+  // Only set header if it hasn't been set in config
+  // See https://github.com/mzabriskie/axios/issues/69
+  if (!headers['User-Agent'] && !headers['user-agent']) {
+    headers['User-Agent'] = 'axios/' + pkg.version;
+  }
 
   if (data) {
     if (utils.isArrayBuffer(data)) {