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Viewing file:     BrowserConnector.js (3.19 KB)      -rw-r--r--

/**
 * @license
 * Copyright 2023 Google Inc.
 * SPDX-License-Identifier: Apache-2.0
 */
import { _connectToBiDiBrowser } from '../bidi/BrowserConnector.js';
import { _connectToCdpBrowser } from '../cdp/BrowserConnector.js';
import { isNode } from '../environment.js';
import { assert } from '../util/assert.js';
import { isErrorLike } from '../util/ErrorLike.js';
const getWebSocketTransportClass = async () => {
    return isNode
        ? (await import('../node/NodeWebSocketTransport.js')).NodeWebSocketTransport
        : (await import('../common/BrowserWebSocketTransport.js'))
            .BrowserWebSocketTransport;
};
/**
 * Users should never call this directly; it's called when calling
 * `puppeteer.connect`. This method attaches Puppeteer to an existing browser instance.
 *
 * @internal
 */
export async function _connectToBrowser(options) {
    const { connectionTransport, endpointUrl } = await getConnectionTransport(options);
    if (options.protocol === 'webDriverBiDi') {
        const bidiBrowser = await _connectToBiDiBrowser(connectionTransport, endpointUrl, options);
        return bidiBrowser;
    }
    else {
        const cdpBrowser = await _connectToCdpBrowser(connectionTransport, endpointUrl, options);
        return cdpBrowser;
    }
}
/**
 * Establishes a websocket connection by given options and returns both transport and
 * endpoint url the transport is connected to.
 */
async function getConnectionTransport(options) {
    const { browserWSEndpoint, browserURL, transport, headers = {} } = options;
    assert(Number(!!browserWSEndpoint) + Number(!!browserURL) + Number(!!transport) ===
        1, 'Exactly one of browserWSEndpoint, browserURL or transport must be passed to puppeteer.connect');
    if (transport) {
        return { connectionTransport: transport, endpointUrl: '' };
    }
    else if (browserWSEndpoint) {
        const WebSocketClass = await getWebSocketTransportClass();
        const connectionTransport = await WebSocketClass.create(browserWSEndpoint, headers);
        return {
            connectionTransport: connectionTransport,
            endpointUrl: browserWSEndpoint,
        };
    }
    else if (browserURL) {
        const connectionURL = await getWSEndpoint(browserURL);
        const WebSocketClass = await getWebSocketTransportClass();
        const connectionTransport = await WebSocketClass.create(connectionURL);
        return {
            connectionTransport: connectionTransport,
            endpointUrl: connectionURL,
        };
    }
    throw new Error('Invalid connection options');
}
async function getWSEndpoint(browserURL) {
    const endpointURL = new URL('/json/version', browserURL);
    try {
        const result = await globalThis.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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