Fix port not being reset on redirect (#729)

Fixes #719

package.json

@@ -63,6 +63,7 @@
 		"eslint-config-xo-typescript": "^0.8.0",
 		"form-data": "^2.3.3",
 		"get-port": "^4.0.0",
+		"nock": "^10.0.6",
 		"np": "^4.0.2",
 		"nyc": "^13.1.0",
 		"p-event": "^2.1.0",

source/request-as-event-emitter.js

@@ -138,6 +138,7 @@ module.exports = (options, input) => {
 
 						const redirectOptions = {
 							...options,
+							port: null,
 							...urlToOptions(redirectURL)
 						};
 

test/redirects.js

@@ -1,5 +1,6 @@
 import {URL} from 'url';
 import test from 'ava';
+import nock from 'nock';
 import got from '../source';
 import {createServer, createSSLServer} from './helpers/server';
 
@@ -219,3 +220,21 @@ test('throws on invalid redirect URL', async t => {
 	const error = await t.throwsAsync(got(`${http.url}/invalidRedirect`));
 	t.is(error.code, 'ERR_INVALID_URL');
 });
+
+test('port is reset on redirect', async t => {
+	const server = await createServer();
+	server.on('/', (request, response) => {
+		response.writeHead(307, {
+			location: 'http://localhost'
+		});
+		response.end();
+	});
+	await server.listen(server.port);
+
+	nock('http://localhost').get('/').reply(200, 'ok');
+
+	const {body} = await got(server.url);
+	t.is(body, 'ok');
+
+	await server.close();
+});