playwright/tests/library/port-forwarding-server.spec.ts
2022-03-25 16:05:50 -07:00

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import childProcess from 'child_process';
import http from 'http';
import path from 'path';
import net from 'net';
import { contextTest, expect } from '../config/browserTest';
import type { Page, Browser } from 'playwright-core';
class OutOfProcessPlaywrightServer {
private _driverProcess: childProcess.ChildProcess;
private _receivedPortPromise: Promise<string>;
constructor(port: number, proxyPort: number) {
this._driverProcess = childProcess.fork(path.join(__dirname, '..', '..', 'packages', 'playwright-core', 'lib', 'cli', 'cli.js'), ['run-server', '--port', port.toString()], {
stdio: 'pipe',
detached: true,
env: {
...process.env,
PW_SOCKS_PROXY_PORT: '1'
}
});
this._driverProcess.unref();
this._receivedPortPromise = new Promise<string>((resolve, reject) => {
this._driverProcess.stdout.on('data', (data: Buffer) => {
const prefix = 'Listening on ';
const line = data.toString();
if (line.startsWith(prefix))
resolve(line.substr(prefix.length));
});
this._driverProcess.stderr.on('data', (data: Buffer) => {
console.log(data.toString());
});
this._driverProcess.on('exit', () => reject());
});
}
async kill() {
const waitForExit = new Promise<void>(resolve => this._driverProcess.on('exit', () => resolve()));
this._driverProcess.kill('SIGKILL');
await waitForExit;
}
public async wsEndpoint(): Promise<string> {
return await this._receivedPortPromise;
}
}
const it = contextTest.extend<{ pageFactory: (redirectPortForTest?: number) => Promise<Page> }>({
pageFactory: async ({ browserType, browserName, channel }, run, testInfo) => {
const playwrightServers: OutOfProcessPlaywrightServer[] = [];
const browsers: Browser[] = [];
await run(async (redirectPortForTest?: number): Promise<Page> => {
const server = new OutOfProcessPlaywrightServer(0, 3200 + testInfo.workerIndex);
playwrightServers.push(server);
const browser = await browserType.connect({
wsEndpoint: await server.wsEndpoint() + '?proxy=*&browser=' + (channel || browserName),
__testHookRedirectPortForwarding: redirectPortForTest,
} as any);
browsers.push(browser);
return await browser.newPage();
});
for (const playwrightServer of playwrightServers)
await playwrightServer.kill();
await Promise.all(browsers.map(async browser => {
if (browser.isConnected())
await new Promise(f => browser.once('disconnected', f));
}));
},
});
it.fixme(({ platform, browserName }) => browserName === 'webkit' && platform === 'win32');
it.skip(({ mode }) => mode !== 'default');
async function startTestServer() {
const server = http.createServer((req: http.IncomingMessage, res: http.ServerResponse) => {
res.end('<html><body>from-retargeted-server</body></html>');
});
await new Promise<void>(resolve => server.listen(0, resolve));
return {
testServerPort: (server.address() as net.AddressInfo).port,
stopTestServer: () => server.close()
};
}
it('should forward non-forwarded requests', async ({ pageFactory, server }) => {
let reachedOriginalTarget = false;
server.setRoute('/foo.html', async (req, res) => {
reachedOriginalTarget = true;
res.end('<html><body>original-target</body></html>');
});
const page = await pageFactory();
await page.goto(server.PREFIX + '/foo.html');
expect(await page.content()).toContain('original-target');
expect(reachedOriginalTarget).toBe(true);
});
it('should proxy localhost requests @smoke', async ({ pageFactory, server, browserName, platform }, workerInfo) => {
it.skip(browserName === 'webkit' && platform === 'darwin');
const { testServerPort, stopTestServer } = await startTestServer();
let reachedOriginalTarget = false;
server.setRoute('/foo.html', async (req, res) => {
reachedOriginalTarget = true;
res.end('<html><body></body></html>');
});
const examplePort = 20_000 + workerInfo.workerIndex * 3;
const page = await pageFactory(testServerPort);
await page.goto(`http://localhost:${examplePort}/foo.html`);
expect(await page.content()).toContain('from-retargeted-server');
expect(reachedOriginalTarget).toBe(false);
stopTestServer();
});
it('should proxy localhost requests from fetch api', async ({ pageFactory, server, browserName, platform }, workerInfo) => {
it.skip(browserName === 'webkit' && platform === 'darwin');
const { testServerPort, stopTestServer } = await startTestServer();
let reachedOriginalTarget = false;
server.setRoute('/foo.html', async (req, res) => {
reachedOriginalTarget = true;
res.end('<html><body></body></html>');
});
const examplePort = 20_000 + workerInfo.workerIndex * 3;
const page = await pageFactory(testServerPort);
const response = await page.request.get(`http://localhost:${examplePort}/foo.html`);
expect(response.status()).toBe(200);
expect(await response.text()).toContain('from-retargeted-server');
expect(reachedOriginalTarget).toBe(false);
stopTestServer();
});
it('should proxy local.playwright requests', async ({ pageFactory, server, browserName }, workerInfo) => {
const { testServerPort, stopTestServer } = await startTestServer();
let reachedOriginalTarget = false;
server.setRoute('/foo.html', async (req, res) => {
reachedOriginalTarget = true;
res.end('<html><body></body></html>');
});
const examplePort = 20_000 + workerInfo.workerIndex * 3;
const page = await pageFactory(testServerPort);
await page.goto(`http://local.playwright:${examplePort}/foo.html`);
expect(await page.content()).toContain('from-retargeted-server');
expect(reachedOriginalTarget).toBe(false);
stopTestServer();
});
it('should lead to the error page for forwarded requests when the connection is refused', async ({ pageFactory, browserName }, workerInfo) => {
const examplePort = 20_000 + workerInfo.workerIndex * 3;
const page = await pageFactory();
const error = await page.goto(`http://localhost:${examplePort}`).catch(e => e);
if (browserName === 'chromium')
expect(error.message).toContain('net::ERR_SOCKS_CONNECTION_FAILED at http://localhost:20');
else if (browserName === 'webkit')
expect(error.message).toBeTruthy();
else if (browserName === 'firefox')
expect(error.message.includes('NS_ERROR_NET_RESET') || error.message.includes('NS_ERROR_CONNECTION_REFUSED')).toBe(true);
});