From 7d60b2dea63f0059a35db5aaa99ebcfef318bad5 Mon Sep 17 00:00:00 2001
From: Miroslav Bajtos <miroslav@strongloop.com>
Date: Mon, 18 Nov 2013 15:36:13 +0100
Subject: [PATCH] Add loopback.urlNotFound() middleware.

The middleware should be used as the last 3-parameter middleware (regular
request handles) before any 4-parameter middleware (error handlers).

This way a request to an URL not handled by any middleware is converted to
a 404 error that can be handled by whatever error handling strategy is
configured in the application.

See senchalabs/connect#954 for more details.
---
 lib/middleware/urlNotFound.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 lib/middleware/urlNotFound.js

diff --git a/lib/middleware/urlNotFound.js b/lib/middleware/urlNotFound.js
new file mode 100644
index 00000000..9f9735e6
--- /dev/null
+++ b/lib/middleware/urlNotFound.js
@@ -0,0 +1,18 @@
+/**
+ * Export the middleware.
+ */
+module.exports = urlNotFound;
+
+/**
+ * Convert any request not handled so far to a 404 error
+ * to be handled by error-handling middleware.
+ * See discussion in Connect pull request #954 for more details
+ * https://github.com/senchalabs/connect/pull/954
+ */
+function urlNotFound() {
+  return function raiseUrlNotFoundError(req, res, next) {
+    var error = new Error('Cannot ' + req.method + ' ' + req.url);
+    error.status = 404;
+    next(error);
+  }
+}