"use strict";
/**
* @license
* Copyright 2017 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.isTargetClosedError = exports.Connection = void 0;
const CDPSession_js_1 = require("../api/CDPSession.js");
const CallbackRegistry_js_1 = require("../common/CallbackRegistry.js");
const Debug_js_1 = require("../common/Debug.js");
const Errors_js_1 = require("../common/Errors.js");
const EventEmitter_js_1 = require("../common/EventEmitter.js");
const ErrorLike_js_1 = require("../util/ErrorLike.js");
const CDPSession_js_2 = require("./CDPSession.js");
const debugProtocolSend = (0, Debug_js_1.debug)('puppeteer:protocol:SEND ►');
const debugProtocolReceive = (0, Debug_js_1.debug)('puppeteer:protocol:RECV ◀');
/**
* @public
*/
class Connection extends EventEmitter_js_1.EventEmitter {
#url;
#transport;
#delay;
#timeout;
#sessions = new Map();
#closed = false;
#manuallyAttached = new Set();
#callbacks = new CallbackRegistry_js_1.CallbackRegistry();
constructor(url, transport, delay = 0, timeout) {
super();
this.#url = url;
this.#delay = delay;
this.#timeout = timeout ?? 180_000;
this.#transport = transport;
this.#transport.onmessage = this.onMessage.bind(this);
this.#transport.onclose = this.#onClose.bind(this);
}
static fromSession(session) {
return session.connection();
}
/**
* @internal
*/
get delay() {
return this.#delay;
}
get timeout() {
return this.#timeout;
}
/**
* @internal
*/
get _closed() {
return this.#closed;
}
/**
* @internal
*/
get _sessions() {
return this.#sessions;
}
/**
* @param sessionId - The session id
* @returns The current CDP session if it exists
*/
session(sessionId) {
return this.#sessions.get(sessionId) || null;
}
url() {
return this.#url;
}
send(method, params, options) {
// There is only ever 1 param arg passed, but the Protocol defines it as an
// array of 0 or 1 items See this comment:
// https://github.com/ChromeDevTools/devtools-protocol/pull/113#issuecomment-412603285
// which explains why the protocol defines the params this way for better
// type-inference.
// So now we check if there are any params or not and deal with them accordingly.
return this._rawSend(this.#callbacks, method, params, undefined, options);
}
/**
* @internal
*/
_rawSend(callbacks, method, params, sessionId, options) {
if (this.#closed) {
return Promise.reject(new Error('Protocol error: Connection closed.'));
}
return callbacks.create(method, options?.timeout ?? this.#timeout, id => {
const stringifiedMessage = JSON.stringify({
method,
params,
id,
sessionId,
});
debugProtocolSend(stringifiedMessage);
this.#transport.send(stringifiedMessage);
});
}
/**
* @internal
*/
async closeBrowser() {
await this.send('Browser.close');
}
/**
* @internal
*/
async onMessage(message) {
if (this.#delay) {
await new Promise(r => {
return setTimeout(r, this.#delay);
});
}
debugProtocolReceive(message);
const object = JSON.parse(message);
if (object.method === 'Target.attachedToTarget') {
const sessionId = object.params.sessionId;
const session = new CDPSession_js_2.CdpCDPSession(this, object.params.targetInfo.type, sessionId, object.sessionId);
this.#sessions.set(sessionId, session);
this.emit(CDPSession_js_1.CDPSessionEvent.SessionAttached, session);
const parentSession = this.#sessions.get(object.sessionId);
if (parentSession) {
parentSession.emit(CDPSession_js_1.CDPSessionEvent.SessionAttached, session);
}
}
else if (object.method === 'Target.detachedFromTarget') {
const session = this.#sessions.get(object.params.sessionId);
if (session) {
session._onClosed();
this.#sessions.delete(object.params.sessionId);
this.emit(CDPSession_js_1.CDPSessionEvent.SessionDetached, session);
const parentSession = this.#sessions.get(object.sessionId);
if (parentSession) {
parentSession.emit(CDPSession_js_1.CDPSessionEvent.SessionDetached, session);
}
}
}
if (object.sessionId) {
const session = this.#sessions.get(object.sessionId);
if (session) {
session._onMessage(object);
}
}
else if (object.id) {
if (object.error) {
this.#callbacks.reject(object.id, (0, ErrorLike_js_1.createProtocolErrorMessage)(object), object.error.message);
}
else {
this.#callbacks.resolve(object.id, object.result);
}
}
else {
this.emit(object.method, object.params);
}
}
#onClose() {
if (this.#closed) {
return;
}
this.#closed = true;
this.#transport.onmessage = undefined;
this.#transport.onclose = undefined;
this.#callbacks.clear();
for (const session of this.#sessions.values()) {
session._onClosed();
}
this.#sessions.clear();
this.emit(CDPSession_js_1.CDPSessionEvent.Disconnected, undefined);
}
dispose() {
this.#onClose();
this.#transport.close();
}
/**
* @internal
*/
isAutoAttached(targetId) {
return !this.#manuallyAttached.has(targetId);
}
/**
* @internal
*/
async _createSession(targetInfo, isAutoAttachEmulated = true) {
if (!isAutoAttachEmulated) {
this.#manuallyAttached.add(targetInfo.targetId);
}
const { sessionId } = await this.send('Target.attachToTarget', {
targetId: targetInfo.targetId,
flatten: true,
});
this.#manuallyAttached.delete(targetInfo.targetId);
const session = this.#sessions.get(sessionId);
if (!session) {
throw new Error('CDPSession creation failed.');
}
return session;
}
/**
* @param targetInfo - The target info
* @returns The CDP session that is created
*/
async createSession(targetInfo) {
return await this._createSession(targetInfo, false);
}
/**
* @internal
*/
getPendingProtocolErrors() {
const result = [];
result.push(...this.#callbacks.getPendingProtocolErrors());
for (const session of this.#sessions.values()) {
result.push(...session.getPendingProtocolErrors());
}
return result;
}
}
exports.Connection = Connection;
/**
* @internal
*/
function isTargetClosedError(error) {
return error instanceof Errors_js_1.TargetCloseError;
}
exports.isTargetClosedError = isTargetClosedError;
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