Add an HTTPS check before checking HTTP2

lib/tools/isHttp2.js

@@ -13,7 +13,16 @@ var isHttp2 = function() {
 
             .then(function(result) {
 
-                if (result.isHttp2) {
+                if (result.isHttp) {
+                    debug('The website is not even in HTTPS');
+
+                    data.toolsResults.http2 = {
+                        metrics: {
+                            http2: false
+                        }
+                    };
+
+                } else if (result.isHttp2) {
                     debug('HTTP/2 (or SPDY) is supported');
 
                     data.toolsResults.http2 = {
@@ -65,21 +74,30 @@ var isHttp2 = function() {
     this.checkHttp2 = function(data) {
         var deferred = Q.defer();
 
-        var domain = this.getDomain(data);
-
-        // To make is-http2 work, you need to have openssl in a version greater than 1.0.0 installed and available in your $path.
-        http2(domain, {includeSpdy: true})
-
-            .then(function(result) {
-                deferred.resolve(result);
-            })
+        // Check if it's HTTPS first
+        if (this.getProtocol(data) === 'http:') {
             
-            .catch(function(error) {
-                debug('Error while checking HTTP2 support:');
-                debug(error);
-                deferred.reject('Error while checking for HTTP2 support');
+            deferred.resolve({
+                isHttp: true
             });
 
+        } else {
+
+            // To make is-http2 work, you need to have openssl in a version greater than 1.0.0 installed and available in your $path.
+            http2(this.getDomain(data), {includeSpdy: true})
+
+                .then(function(result) {
+                    deferred.resolve(result);
+                })
+                
+                .catch(function(error) {
+                    debug('Error while checking HTTP2 support:');
+                    debug(error);
+                    deferred.reject('Error while checking for HTTP2 support');
+                });
+
+        }
+
         return deferred.promise;
     };
 };