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/**
* Copyright 2020 Google Inc. All rights reserved.
*
* 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 {debugError} from './util.js';
import {isErrorLike} from '../util/ErrorLike.js';
import {isNode} from '../environment.js';
import {assert} from '../util/assert.js';
import {
Browser,
IsPageTargetCallback,
TargetFilterCallback,
} from './Browser.js';
import {Connection} from './Connection.js';
import {ConnectionTransport} from './ConnectionTransport.js';
import {getFetch} from './fetch.js';
import {Viewport} from './PuppeteerViewport.js';
/**
* Generic browser options that can be passed when launching any browser or when
* connecting to an existing browser instance.
* @public
*/
export interface BrowserConnectOptions {
/**
* Whether to ignore HTTPS errors during navigation.
* @defaultValue false
*/
ignoreHTTPSErrors?: boolean;
/**
* Sets the viewport for each page.
*/
defaultViewport?: Viewport | null;
/**
* Slows down Puppeteer operations by the specified amount of milliseconds to
* aid debugging.
*/
slowMo?: number;
/**
* Callback to decide if Puppeteer should connect to a given target or not.
*/
targetFilter?: TargetFilterCallback;
/**
* @internal
*/
_isPageTarget?: IsPageTargetCallback;
}
const getWebSocketTransportClass = async () => {
return isNode
? (await import('../node/NodeWebSocketTransport.js')).NodeWebSocketTransport
: (await import('./BrowserWebSocketTransport.js'))
.BrowserWebSocketTransport;
};
/**
* Users should never call this directly; it's called when calling
* `puppeteer.connect`.
*
* @internal
*/
export async function _connectToBrowser(
options: BrowserConnectOptions & {
browserWSEndpoint?: string;
browserURL?: string;
transport?: ConnectionTransport;
}
): Promise<Browser> {
const {
browserWSEndpoint,
browserURL,
ignoreHTTPSErrors = false,
defaultViewport = {width: 800, height: 600},
transport,
slowMo = 0,
targetFilter,
_isPageTarget: isPageTarget,
} = options;
assert(
Number(!!browserWSEndpoint) + Number(!!browserURL) + Number(!!transport) ===
1,
'Exactly one of browserWSEndpoint, browserURL or transport must be passed to puppeteer.connect'
);
let connection!: Connection;
if (transport) {
connection = new Connection('', transport, slowMo);
} else if (browserWSEndpoint) {
const WebSocketClass = await getWebSocketTransportClass();
const connectionTransport: ConnectionTransport =
await WebSocketClass.create(browserWSEndpoint);
connection = new Connection(browserWSEndpoint, connectionTransport, slowMo);
} else if (browserURL) {
const connectionURL = await getWSEndpoint(browserURL);
const WebSocketClass = await getWebSocketTransportClass();
const connectionTransport: ConnectionTransport =
await WebSocketClass.create(connectionURL);
connection = new Connection(connectionURL, connectionTransport, slowMo);
}
const version = await connection.send('Browser.getVersion');
const product = version.product.toLowerCase().includes('firefox')
? 'firefox'
: 'chrome';
const {browserContextIds} = await connection.send(
'Target.getBrowserContexts'
);
const browser = await Browser._create(
product || 'chrome',
connection,
browserContextIds,
ignoreHTTPSErrors,
defaultViewport,
undefined,
() => {
return connection.send('Browser.close').catch(debugError);
},
targetFilter,
isPageTarget
);
await browser.pages();
return browser;
}
async function getWSEndpoint(browserURL: string): Promise<string> {
const endpointURL = new URL('/json/version', browserURL);
const fetch = await getFetch();
try {
const result = await fetch(endpointURL.toString(), {
method: 'GET',
});
if (!result.ok) {
throw new Error(`HTTP ${result.statusText}`);
}
const data = await result.json();
return data.webSocketDebuggerUrl;
} catch (error) {
if (isErrorLike(error)) {
error.message =
`Failed to fetch browser webSocket URL from ${endpointURL}: ` +
error.message;
}
throw error;
}
}
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