fix SVG <use> tag is broken when the parent page has file:// url (c…

…lose #1051) (#1053)

src/request-pipeline/file-request.js

@@ -1,4 +1,5 @@
 import fs from 'fs';
+import mime from 'mime';
 import { EventEmitter } from 'events';
 import { parse } from 'url';
 
@@ -16,13 +17,20 @@ export default class FileRequest extends EventEmitter {
         this.stream   = fs.createReadStream(path);
         this.headers  = {};
         this.trailers = {};
+        this.path     = path;
 
         this.stream.on('open', () => this._onOpen());
         this.stream.on('error', err => this._onOpen(err));
     }
 
     _onOpen (err) {
-        this.statusCode = err ? 404 : 200;
+        if (!err) {
+            this.statusCode = 200;
+            this.headers['content-type'] = mime.lookup(this.path);
+        }
+        else
+            this.statusCode = 404;
+
         this.emit('response', this);
     }
 

test/server/proxy-test.js

@@ -1013,6 +1013,22 @@ describe('Proxy', function () {
                 done();
             });
         });
+
+        it('Should set the correct content-type header', function (done) {
+            session.id = 'sessionId';
+
+            var options = {
+                url:     proxy.openSession('file:///' + getFileProtocolUrl('./data/images/icons.svg'), session),
+                headers: {
+                    accept: 'image/webp,image/*,*/*;q=0.8'
+                }
+            };
+
+            request(options, function (err, res) {
+                expect(res.headers['content-type']).eql('image/svg+xml');
+                done();
+            });
+        });
     });
 
     describe('Regression', function () {