fix(connect): correct errorHandler

Author: azu

Diff for: src/connect/errorHandler.js

@@ -1,8 +1,9 @@
 "use strict";
 export default function () {
     return function errorHandling(err, req, res, next) {
-        console.error(err.stack);
-        res.status(500).send(err.message);
+        res.writeHead(404);
+        res.write(err.message);
+        res.end();
         next();
     };
 }

Diff for: test/connect/hello-test.js

@@ -14,20 +14,20 @@ describe("connect", function () {
     describe("errorHandler", function () {
         beforeEach(function (done) {
             let app = connect();
-            app.use(errorHandler());
             app.use((req, res, next) => {
                 next(new Error("wrong"));
             });
+            app.use(errorHandler());
             server = http.createServer(app).listen(3000, done);
         });
         afterEach(function () {
             server && server.close();
         });
-        it("should return 500 status response", function () {
+        it("should return 404 status response", function () {
             return fetch("http://localhost:3000")
                 .then(res => res.status)
                 .then(status => {
-                    assert(status, 500);
+                    assert(status, 404);
                 });
         });