From 73977fb6f593ebd80f8b4687aa4f53deb3576cbd Mon Sep 17 00:00:00 2001
From: Ingmar Aasoja <ingmar@zone.ee>
Date: Tue, 24 Sep 2019 20:10:57 +0300
Subject: [PATCH 1/2] Make header fields case-insensitive in as stated in
 RFC7130

---
 src/Vinelab/Http/Response.php | 6 +++++-
 tests/ClientTest.php          | 4 ++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Vinelab/Http/Response.php b/src/Vinelab/Http/Response.php
index 2dcfb1a..c9d181f 100644
--- a/src/Vinelab/Http/Response.php
+++ b/src/Vinelab/Http/Response.php
@@ -46,6 +46,7 @@ public function __construct($cURL)
             $this->info = curl_getinfo($cURL);
             $this->headers = $this->parseHeaders($response, $this->info['header_size']);
             $this->content = $this->parseBody($response, $this->info['header_size']);
+            $this->caseInsensitiveHeaders = array_change_key_case($this->headers);
         } else {
             throw new HttpClientRequestFailedException(curl_error($cURL));
         }
@@ -148,7 +149,10 @@ public function headers()
      */
     public function header($name)
     {
-        return (array_key_exists($name, $this->headers)) ? $this->headers[$name] : null;
+        if (array_key_exists(strtolower($name), $this->caseInsensitiveHeaders)) {
+            return $this->caseInsensitiveHeaders[strtolower($name)];
+        }
+        return null;
     }
 
     /**
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 608b8aa..03ce35b 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -37,6 +37,10 @@ public function testHeaders()
 
         $this->assertArrayHasKey('Content-Type', $headers);
         $this->assertEquals('application/json', $headers['Content-Type']);
+
+        // RFC7230 case-insensitive header fields
+        $testResponse = $this->client->get($request);
+        $this->assertEquals($testResponse->header('content-type'), $testResponse->header('Content-Type'));
     }
 
     public function testGetRequestWithoutParams()

From aafdaeba8cfe8c6ba0ea9635ab30810638092d14 Mon Sep 17 00:00:00 2001
From: Ingmar Aasoja <ingmar@zone.ee>
Date: Tue, 24 Sep 2019 20:11:38 +0300
Subject: [PATCH 2/2] Make header fields case-insensitive in as stated in
 RFC7130

---
 src/Vinelab/Http/Response.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Vinelab/Http/Response.php b/src/Vinelab/Http/Response.php
index c9d181f..d0b0159 100644
--- a/src/Vinelab/Http/Response.php
+++ b/src/Vinelab/Http/Response.php
@@ -152,6 +152,7 @@ public function header($name)
         if (array_key_exists(strtolower($name), $this->caseInsensitiveHeaders)) {
             return $this->caseInsensitiveHeaders[strtolower($name)];
         }
+        
         return null;
     }