84 lines
2.8 KiB
TypeScript
84 lines
2.8 KiB
TypeScript
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/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import net from 'net';
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import { EventEmitter } from 'events';
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import { SdkObject } from './instrumentation';
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import { debugLogger } from '../utils/debugLogger';
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import { isLocalIpAddress } from '../utils/utils';
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import { SocksProxyServer, SocksConnectionInfo, SocksInterceptedSocketHandler } from './socksServer';
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import { LaunchOptions } from './types';
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export class BrowserServerPortForwardingServer extends EventEmitter {
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enabled: boolean;
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private _forwardPorts: number[] = [];
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private _parent: SdkObject;
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private _server: SocksProxyServer;
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constructor(parent: SdkObject, enabled: boolean) {
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super();
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this.setMaxListeners(0);
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this.enabled = enabled;
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this._parent = parent;
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this._server = new SocksProxyServer(this._handler.bind(this));
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if (enabled) {
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this._server.listen(0);
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debugLogger.log('proxy', `initialized server on port ${this._port()})`);
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}
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}
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private _port(): number {
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if (!this.enabled)
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return 0;
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return (this._server.server.address() as net.AddressInfo).port;
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}
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public browserLaunchOptions(): LaunchOptions | undefined {
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if (!this.enabled)
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return;
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return {
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proxy: {
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server: `socks5://127.0.0.1:${this._port()}`
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}
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};
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}
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private _handler(info: SocksConnectionInfo, forward: () => void, intercept: (parent: SdkObject) => SocksInterceptedSocketHandler): void {
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const shouldProxyRequestToClient = isLocalIpAddress(info.dstAddr) && this._forwardPorts.includes(info.dstPort);
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debugLogger.log('proxy', `incoming connection from ${info.srcAddr}:${info.srcPort} to ${info.dstAddr}:${info.dstPort} shouldProxyRequestToClient=${shouldProxyRequestToClient}`);
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if (!shouldProxyRequestToClient) {
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forward();
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return;
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}
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const socket = intercept(this._parent);
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this.emit('incomingSocksSocket', socket);
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}
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public enablePortForwarding(ports: number[]): void {
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if (!this.enabled)
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throw new Error(`Port forwarding needs to be enabled when launching the server via BrowserType.launchServer.`);
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debugLogger.log('proxy', `enable port forwarding on ports: ${ports}`);
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this._forwardPorts = ports;
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}
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public stop(): void {
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if (!this.enabled)
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return;
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debugLogger.log('proxy', 'stopping server');
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this._server.close();
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}
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}
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