Add `requestUrl` to response in streaming mode (#230)

* Add `requestUrl` to response in streaming mode (Fixes #229).
* Set `requestUrl` inside `requestAsEventEmitter()`

index.js

@@ -22,6 +22,7 @@ function requestAsEventEmitter(opts) {
 	opts = opts || {};
 
 	const ee = new EventEmitter();
+	const requestUrl = opts.href || urlLib.resolve(urlLib.format(opts), opts.path);
 	let redirectCount = 0;
 	let retryCount = 0;
 	let redirectUrl;
@@ -36,6 +37,8 @@ function requestAsEventEmitter(opts) {
 				res.url = redirectUrl;
 			}
 
+			res.requestUrl = requestUrl;
+
 			if (isRedirect(statusCode) && opts.followRedirect && 'location' in res.headers && (opts.method === 'GET' || opts.method === 'HEAD')) {
 				res.resume();
 
@@ -105,7 +108,6 @@ function asPromise(opts) {
 					const limitStatusCode = opts.followRedirect ? 299 : 399;
 
 					res.body = data;
-					res.requestUrl = opts.href || urlLib.resolve(urlLib.format(opts), opts.path);
 
 					if (opts.json && res.body) {
 						try {

test/stream.js

@@ -119,6 +119,14 @@ test.cb('accepts option.body as Stream', t => {
 		});
 });
 
+test.cb('redirect response contains old url', t => {
+	got.stream(`${s.url}/redirect`)
+		.on('response', res => {
+			t.is(res.requestUrl, `${s.url}/redirect`);
+			t.end();
+		});
+});
+
 test.after('cleanup', async () => {
 	await s.close();
 });