Implement redirect event

Closes #58

index.js

@@ -130,6 +130,10 @@ function got(url, opts, cb) {
 				delete opts.port;
 				delete opts.path;
 
+				if (proxy) {
+					proxy.emit('redirect', res, opts);
+				}
+
 				get(urlLib.resolve(url, res.headers.location), opts, cb);
 				return;
 			}

readme.md

@@ -112,9 +112,17 @@ The data you requested.
 
 The [response object](http://nodejs.org/api/http.html#http_http_incomingmessage).
 
+
+When in stream mode, you can listen for events:
+
 ##### .on('response', response)
 
-When in stream mode, you can listen for the `response` event to get the response object.
+`response` event to get the response object.
+
+##### .on('redirect', response, nextOpts)
+
+`redirect` event to get the response object of redirect. Second argument is options for next request to redirect location.
+
 
 ###### response
 

test/test-redirects.js

@@ -90,6 +90,18 @@ tape('redirect only GET and HEAD requests', function (t) {
 	});
 });
 
+tape('redirect event', function (t) {
+	got(s.url + '/endless')
+		.on('redirect', function (res, opts) {
+			t.equal(res.headers.location, s.url + '/endless');
+			opts.path = '/';
+		})
+		.on('data', function (data) {
+			t.equal(data.toString(),'reached');
+			t.end();
+		});
+});
+
 tape('cleanup', function (t) {
 	s.close();
 	t.end();