Merge pull request #3 from garrows/fix/cached-mimetype

Fix/cached mimetype

package.json

@@ -1,7 +1,7 @@
 {
   "name": "immp",
   "description": "Image Manipulation Middleware Proxy",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "repository": "garrows/IMMP",
   "keywords": [
     "imageMagick",

src/index.js

@@ -73,10 +73,24 @@ module.exports = function (_config) {
 				} catch(e) {};
 
 				if(stat && now - createdAt < config.ttl) {
+
 					gm(config.cacheFolder + '/' + image.hash)
 						.options(gmOptions)
+						.format({
+							bufferStream: true
+						}, function (_error, _format) {
+							if(_error) {
+								console.log(_error);
+								return _callback(_error);
+							}
+							image.format = _format;
+							_res.set({
+								'Content-Type': 'image/' + _format.toLowerCase()
+							});
+						})
 						.stream()
 						.pipe(_res);
+
 				} else {
 					_callback();
 				}

test/index.js

@@ -357,7 +357,24 @@ describe('immp', function () {
 
 		});
 
+	});
+
+	it('should still have the right content-type & size when cached', function (_done) {
+		http.get('http://localhost:3000/im/?image=/images/Landscape_8.jpg&quality=50', function (_httpResponse) {
+
+			_httpResponse.headers['content-type'].should.eql('image/jpeg');
+
+			gm(_httpResponse)
+				.options(gmOptions)
+				.size(function (_error, _size) {
+					if(_error) return _done(_error);
+					_size.width.should.equal(600);
+					_size.height.should.equal(450);
 
+					_done();
+				});
+
+		});
 
 	});