From a96ee96c8a13cf70dcfaa1c05ae5c73b71cee682 Mon Sep 17 00:00:00 2001
From: "Daniel Boelzle [:dbo]" <dbo@boelzle.org>
Date: Thu, 21 May 2015 11:15:04 +0200
Subject: [PATCH] [issue 20] Storing lower-cased header keys

---
 lib/XMLHttpRequest.js | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/lib/XMLHttpRequest.js b/lib/XMLHttpRequest.js
index 949fdf9..1681060 100644
--- a/lib/XMLHttpRequest.js
+++ b/lib/XMLHttpRequest.js
@@ -38,8 +38,8 @@ exports.XMLHttpRequest = function() {
 
   // Set some default headers
   var defaultHeaders = {
-    "User-Agent": "node-XMLHttpRequest",
-    "Accept": "*/*",
+    "user-agent": "node-XMLHttpRequest",
+    "accept": "*/*",
   };
 
   var headers = defaultHeaders;
@@ -195,7 +195,7 @@ exports.XMLHttpRequest = function() {
     if (sendFlag) {
       throw "INVALID_STATE_ERR: send flag is true";
     }
-    headers[header] = value;
+    headers[header.toLowerCase()] = value;
   };
 
   /**
@@ -230,6 +230,7 @@ exports.XMLHttpRequest = function() {
     var result = "";
 
     for (var i in response.headers) {
+      i = i.toLowerCase();
       // Cookie headers are excluded
       if (i !== "set-cookie" && i !== "set-cookie2") {
         result += i + ": " + response.headers[i] + "\r\n";
@@ -245,9 +246,11 @@ exports.XMLHttpRequest = function() {
    * @return string Returns the request header or empty string if not set
    */
   this.getRequestHeader = function(name) {
-    // @TODO Make this case insensitive
-    if (typeof name === "string" && headers[name]) {
-      return headers[name];
+    if (typeof name === "string") {
+      name = name.toLowerCase();
+      if (headers[name]) {
+        return headers[name];
+      }
     }
 
     return "";
@@ -328,9 +331,9 @@ exports.XMLHttpRequest = function() {
     var uri = url.pathname + (url.search ? url.search : "");
 
     // Set the Host header or the server may reject the request
-    headers.Host = host;
+    headers.host = host;
     if (!((ssl && port === 443) || port === 80)) {
-      headers.Host += ":" + url.port;
+      headers.host += ":" + url.port;
     }
 
     // Set Basic Auth if necessary
@@ -339,22 +342,22 @@ exports.XMLHttpRequest = function() {
         settings.password = "";
       }
       var authBuf = new Buffer(settings.user + ":" + settings.password);
-      headers.Authorization = "Basic " + authBuf.toString("base64");
+      headers.authorization = "Basic " + authBuf.toString("base64");
     }
 
     // Set content length header
     if (settings.method === "GET" || settings.method === "HEAD") {
       data = null;
     } else if (data) {
-      headers["Content-Length"] = Buffer.isBuffer(data) ? data.length : Buffer.byteLength(data);
+      headers["content-length"] = Buffer.isBuffer(data) ? data.length : Buffer.byteLength(data);
 
-      if (!headers["Content-Type"]) {
-        headers["Content-Type"] = "text/plain;charset=UTF-8";
+      if (!this.getRequestHeader("Content-Type")) {
+        headers["content-type"] = "text/plain;charset=UTF-8";
       }
     } else if (settings.method === "POST") {
       // For a post with no data set Content-Length: 0.
       // This is required by buggy servers that don't meet the specs.
-      headers["Content-Length"] = 0;
+      headers["content-length"] = 0;
     }
 
     var options = {