516 lines
21 KiB
TypeScript
516 lines
21 KiB
TypeScript
import {
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AbstractServerConnection,
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CommandOptionDefaults,
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CommandOptions,
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ConnectionStateListener,
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voice
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} from "tc-shared/connection/ConnectionBase";
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import {ConnectionHandler, ConnectionState, DisconnectReason} from "tc-shared/ConnectionHandler";
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import {ServerAddress} from "tc-shared/ui/server";
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import {HandshakeHandler} from "tc-shared/connection/HandshakeHandler";
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import {ConnectionCommandHandler, ServerConnectionCommandBoss} from "tc-shared/connection/CommandHandler";
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import {CommandResult} from "tc-shared/connection/ServerConnectionDeclaration";
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import {settings, Settings} from "tc-shared/settings";
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import * as log from "tc-shared/log";
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import {LogCategory} from "tc-shared/log";
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import {Regex} from "tc-shared/ui/modal/ModalConnect";
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import {AbstractCommandHandlerBoss} from "tc-shared/connection/AbstractCommandHandler";
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import * as elog from "tc-shared/ui/frames/server_log";
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import {VoiceConnection} from "../voice/VoiceHandler";
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import AbstractVoiceConnection = voice.AbstractVoiceConnection;
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class ReturnListener<T> {
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resolve: (value?: T | PromiseLike<T>) => void;
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reject: (reason?: any) => void;
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code: string;
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timeout: NodeJS.Timer;
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}
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export class ServerConnection extends AbstractServerConnection {
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private _remote_address: ServerAddress;
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private _handshakeHandler: HandshakeHandler;
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private _command_boss: ServerConnectionCommandBoss;
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private _command_handler_default: ConnectionCommandHandler;
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private _socket_connected: WebSocket;
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private _connect_timeout_timer: NodeJS.Timer = undefined;
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private _connected: boolean = false;
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private _retCodeIdx: number;
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private _retListener: ReturnListener<CommandResult>[];
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private _connection_state_listener: ConnectionStateListener;
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private _voice_connection: VoiceConnection;
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private _ping = {
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thread_id: 0,
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last_request: 0,
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last_response: 0,
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request_id: 0,
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interval: 5000,
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timeout: 7500,
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value: 0,
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value_native: 0 /* ping value for native (WS) */
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};
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constructor(client : ConnectionHandler) {
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super(client);
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this._retCodeIdx = 0;
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this._retListener = [];
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this._command_boss = new ServerConnectionCommandBoss(this);
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this._command_handler_default = new ConnectionCommandHandler(this);
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this._command_boss.register_handler(this._command_handler_default);
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this.command_helper.initialize();
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if(!settings.static_global(Settings.KEY_DISABLE_VOICE, false))
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this._voice_connection = new VoiceConnection(this);
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}
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destroy() {
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this.disconnect("handle destroyed").catch(error => {
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log.warn(LogCategory.NETWORKING, tr("Failed to disconnect on server connection destroy: %o"), error);
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}).then(() => {
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clearInterval(this._ping.thread_id);
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clearTimeout(this._connect_timeout_timer);
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for(const listener of this._retListener) {
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try {
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listener.reject("handler destroyed");
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} catch(error) {
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log.warn(LogCategory.NETWORKING, tr("Failed to reject command promise: %o"), error);
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}
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}
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this._retListener = undefined;
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this.command_helper.destroy();
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this._command_handler_default && this._command_boss.unregister_handler(this._command_handler_default);
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this._command_handler_default = undefined;
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this._voice_connection && this._voice_connection.destroy();
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this._voice_connection = undefined;
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this._command_boss && this._command_boss.destroy();
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this._command_boss = undefined;
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});
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}
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private generateReturnCode() : string {
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return (this._retCodeIdx++).toString();
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}
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async connect(address : ServerAddress, handshake: HandshakeHandler, timeout?: number) : Promise<void> {
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timeout = typeof(timeout) === "number" ? timeout : 5000;
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try {
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await this.disconnect()
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} catch(error) {
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log.error(LogCategory.NETWORKING, tr("Failed to close old connection properly. Error: %o"), error);
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throw "failed to cleanup old connection";
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}
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this.updateConnectionState(ConnectionState.CONNECTING);
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this._remote_address = address;
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this._handshakeHandler = handshake;
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this._handshakeHandler.setConnection(this);
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/* The direct one connect directly to the target address. The other via the .con-gate.work */
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let local_direct_socket: WebSocket;
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let local_proxy_socket: WebSocket;
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let connected_socket: WebSocket;
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let local_timeout_timer: NodeJS.Timer;
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/* setting up an timeout */
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local_timeout_timer = setTimeout(async () => {
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log.error(LogCategory.NETWORKING, tr("Connect timeout triggered. Aborting connect attempt!"));
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try {
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await this.disconnect();
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} catch(error) {
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log.warn(LogCategory.NETWORKING, tr("Failed to close connection after timeout had been triggered! (%o)"), error);
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}
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error_cleanup();
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this.client.handleDisconnect(DisconnectReason.CONNECT_FAILURE);
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}, timeout);
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this._connect_timeout_timer = local_timeout_timer;
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const error_cleanup = () => {
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try { local_direct_socket.close(); } catch(ex) {}
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try { local_proxy_socket.close(); } catch(ex) {}
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clearTimeout(local_timeout_timer);
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};
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try {
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let proxy_host;
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if(Regex.IP_V4.test(address.host))
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proxy_host = address.host.replace(/\./g, "-") + ".con-gate.work";
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else if(Regex.IP_V6.test(address.host))
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proxy_host = address.host.replace(/\[(.*)]/, "$1").replace(/:/g, "_") + ".con-gate.work";
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if(proxy_host && !settings.static_global(Settings.KEY_CONNECT_NO_DNSPROXY))
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local_proxy_socket = new WebSocket('wss://' + proxy_host + ":" + address.port);
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local_direct_socket = new WebSocket('wss://' + address.host + ":" + address.port);
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connected_socket = await new Promise<WebSocket>(resolve => {
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let pending = 0, succeed = false;
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if(local_proxy_socket) {
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pending++;
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local_proxy_socket.onerror = event => {
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--pending;
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if(this._connect_timeout_timer != local_timeout_timer)
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log.trace(LogCategory.NETWORKING, tr("Proxy socket send an error while connecting. Pending sockets: %d. Any succeed: %s"), pending, succeed ? tr("yes") : tr("no"));
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if(!succeed && pending == 0)
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resolve(undefined);
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};
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local_proxy_socket.onopen = event => {
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--pending;
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if(this._connect_timeout_timer != local_timeout_timer)
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log.trace(LogCategory.NETWORKING, tr("Proxy socket connected. Pending sockets: %d. Any succeed before: %s"), pending, succeed ? tr("yes") : tr("no"));
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if(!succeed) {
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succeed = true;
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resolve(local_proxy_socket);
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}
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};
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}
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if(local_direct_socket) {
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pending++;
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local_direct_socket.onerror = event => {
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--pending;
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if(this._connect_timeout_timer != local_timeout_timer)
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log.trace(LogCategory.NETWORKING, tr("Direct socket send an error while connecting. Pending sockets: %d. Any succeed: %s"), pending, succeed ? tr("yes") : tr("no"));
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if(!succeed && pending == 0)
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resolve(undefined);
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};
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local_direct_socket.onopen = event => {
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--pending;
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if(this._connect_timeout_timer != local_timeout_timer)
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log.trace(LogCategory.NETWORKING, tr("Direct socket connected. Pending sockets: %d. Any succeed before: %s"), pending, succeed ? tr("yes") : tr("no"));
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if(!succeed) {
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succeed = true;
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resolve(local_direct_socket);
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}
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};
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}
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if(local_proxy_socket && local_proxy_socket.readyState == WebSocket.OPEN)
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local_proxy_socket.onopen(undefined);
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if(local_direct_socket && local_direct_socket.readyState == WebSocket.OPEN)
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local_direct_socket.onopen(undefined);
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});
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if(!connected_socket) {
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//We failed to connect. Lets test if we're still relevant
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if(this._connect_timeout_timer != local_timeout_timer) {
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log.trace(LogCategory.NETWORKING, tr("Failed to connect to %s, but we're already obsolete."), address.host + ":" + address.port);
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error_cleanup();
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} else {
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try {
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await this.disconnect();
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} catch(error) {
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log.warn(LogCategory.NETWORKING, tr("Failed to cleanup connection after unsuccessful connect attempt: %o"), error);
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}
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error_cleanup();
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this.client.handleDisconnect(DisconnectReason.CONNECT_FAILURE);
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}
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return;
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}
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if(this._connect_timeout_timer != local_timeout_timer) {
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log.trace(LogCategory.NETWORKING, tr("Successfully connected to %s, but we're already obsolete. Closing connections"), address.host + ":" + address.port);
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error_cleanup();
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return;
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}
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clearTimeout(local_timeout_timer);
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this._connect_timeout_timer = undefined;
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if(connected_socket == local_proxy_socket) {
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log.debug(LogCategory.NETWORKING, tr("Established a TCP connection to %s via proxy to %s"), address.host + ":" + address.port, proxy_host);
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this._remote_address.host = proxy_host;
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} else {
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log.debug(LogCategory.NETWORKING, tr("Established a TCP connection to %s directly"), address.host + ":" + address.port);
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}
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this._socket_connected = connected_socket;
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this._socket_connected.onclose = event => {
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if(this._socket_connected != connected_socket) return; /* this socket isn't from interest anymore */
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this.client.handleDisconnect(this._connected ? DisconnectReason.CONNECTION_CLOSED : DisconnectReason.CONNECT_FAILURE, {
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code: event.code,
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reason: event.reason,
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event: event
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});
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};
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this._socket_connected.onerror = e => {
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if(this._socket_connected != connected_socket) return; /* this socket isn't from interest anymore */
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log.warn(LogCategory.NETWORKING, tr("Received web socket error: (%o)"), e);
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};
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this._socket_connected.onmessage = msg => {
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if(this._socket_connected != connected_socket) return; /* this socket isn't from interest anymore */
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this.handle_socket_message(msg.data);
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};
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this._connected = true;
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this.start_handshake();
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} catch (error) {
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error_cleanup();
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if(this._socket_connected != connected_socket && this._connect_timeout_timer != local_timeout_timer)
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return; /* we're not from interest anymore */
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log.warn(LogCategory.NETWORKING, tr("Received unexpected error while connecting: %o"), error);
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try {
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await this.disconnect();
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} catch(error) {
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log.warn(LogCategory.NETWORKING, tr("Failed to cleanup connection after unsuccessful connect attempt: %o"), error);
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}
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this.client.handleDisconnect(DisconnectReason.CONNECT_FAILURE, error);
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}
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}
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private start_handshake() {
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this.updateConnectionState(ConnectionState.INITIALISING);
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this.client.log.log(elog.Type.CONNECTION_LOGIN, {});
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this._handshakeHandler.initialize();
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this._handshakeHandler.startHandshake();
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}
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async disconnect(reason?: string) : Promise<void> {
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this.updateConnectionState(ConnectionState.DISCONNECTING);
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try {
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clearTimeout(this._connect_timeout_timer);
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this._connect_timeout_timer = undefined;
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clearTimeout(this._ping.thread_id);
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this._ping.thread_id = undefined;
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if(typeof(reason) === "string") {
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//TODO send disconnect reason
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}
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if(this._voice_connection)
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this._voice_connection.drop_rtp_session();
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if(this._socket_connected) {
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this._socket_connected.close(3000 + 0xFF, tr("request disconnect"));
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this._socket_connected = undefined;
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}
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for(let future of this._retListener)
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future.reject(tr("Connection closed"));
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this._retListener = [];
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this._connected = false;
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this._retCodeIdx = 0;
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} finally {
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this.updateConnectionState(ConnectionState.UNCONNECTED);
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}
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}
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private handle_socket_message(data) {
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if(typeof(data) === "string") {
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let json;
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try {
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json = JSON.parse(data);
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} catch(e) {
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log.warn(LogCategory.NETWORKING, tr("Could not parse message json!"));
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alert(e); // error in the above string (in this case, yes)!
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return;
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}
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if(json["type"] === undefined) {
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log.warn(LogCategory.NETWORKING, tr("Missing data type in message!"));
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return;
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}
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if(json["type"] === "command") {
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let group = log.group(log.LogType.DEBUG, LogCategory.NETWORKING, tr("Handling command '%s'"), json["command"]);
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group.log(tr("Handling command '%s'"), json["command"]);
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group.group(log.LogType.TRACE, tr("Json:")).collapsed(true).log("%o", json).end();
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this._command_boss.invoke_handle({
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command: json["command"],
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arguments: json["data"]
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});
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if(json["command"] === "initserver") {
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this._ping.thread_id = setInterval(() => this.do_ping(), this._ping.interval) as any;
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this.do_ping();
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this.updateConnectionState(ConnectionState.CONNECTED);
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if(this._voice_connection)
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this._voice_connection.start_rtc_session(); /* FIXME: Move it to a handler boss and not here! */
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}
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group.end();
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} else if(json["type"] === "WebRTC") {
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if(this._voice_connection)
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this._voice_connection.handleControlPacket(json);
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else
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log.warn(LogCategory.NETWORKING, tr("Dropping WebRTC command packet, because we haven't a bridge."))
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} else if(json["type"] === "ping") {
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this.sendData(JSON.stringify({
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type: 'pong',
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payload: json["payload"]
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}));
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} else if(json["type"] === "pong") {
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const id = parseInt(json["payload"]);
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if(id != this._ping.request_id) {
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log.warn(LogCategory.NETWORKING, tr("Received pong which is older than the last request. Delay may over %oms? (Index: %o, Current index: %o)"), this._ping.timeout, id, this._ping.request_id);
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} else {
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this._ping.last_response = 'now' in performance ? performance.now() : Date.now();
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this._ping.value = this._ping.last_response - this._ping.last_request;
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this._ping.value_native = parseInt(json["ping_native"]) / 1000; /* we're getting it in microseconds and not milliseconds */
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log.debug(LogCategory.NETWORKING, tr("Received new pong. Updating ping to: JS: %o Native: %o"), this._ping.value.toFixed(3), this._ping.value_native.toFixed(3));
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}
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} else {
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log.warn(LogCategory.NETWORKING, tr("Unknown command type %o"), json["type"]);
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}
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} else {
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log.warn(LogCategory.NETWORKING, tr("Received unknown message of type %s. Dropping message"), typeof(data));
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}
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}
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sendData(data: any) {
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if(!this._socket_connected || this._socket_connected.readyState != 1) {
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log.warn(LogCategory.NETWORKING, tr("Tried to send on a invalid socket (%s)"), this._socket_connected ? "invalid state (" + this._socket_connected.readyState + ")" : "invalid socket");
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return;
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}
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this._socket_connected.send(data);
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}
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private commandiefy(input: any) : string {
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return JSON.stringify(input, (key, value) => {
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switch (typeof value) {
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case "boolean": return value == true ? "1" : "0";
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case "function": return value();
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default:
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return value;
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}
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});
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}
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send_command(command: string, data?: any | any[], _options?: CommandOptions) : Promise<CommandResult> {
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if(!this._socket_connected || !this.connected()) {
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log.warn(LogCategory.NETWORKING, tr("Tried to send a command without a valid connection."));
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return Promise.reject(tr("not connected"));
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}
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const options: CommandOptions = {};
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Object.assign(options, CommandOptionDefaults);
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Object.assign(options, _options);
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data = $.isArray(data) ? data : [data || {}];
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if(data.length == 0) /* we require min one arg to append return_code */
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data.push({});
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const _this = this;
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let result = new Promise<CommandResult>((resolve, failed) => {
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let _data = $.isArray(data) ? data : [data];
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let retCode = _data[0]["return_code"] !== undefined ? _data[0].return_code : _this.generateReturnCode();
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_data[0].return_code = retCode;
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let listener = new ReturnListener<CommandResult>();
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listener.resolve = resolve;
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listener.reject = failed;
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listener.code = retCode;
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listener.timeout = setTimeout(() => {
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_this._retListener.remove(listener);
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listener.reject("timeout");
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}, 1500);
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this._retListener.push(listener);
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this._socket_connected.send(this.commandiefy({
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"type": "command",
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"command": command,
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"data": _data,
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"flags": options.flagset.filter(entry => entry.length != 0)
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}));
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});
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return this._command_handler_default.proxy_command_promise(result, options);
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}
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connected() : boolean {
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return !!this._socket_connected && this._socket_connected.readyState == WebSocket.OPEN;
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}
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support_voice(): boolean {
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return this._voice_connection !== undefined;
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}
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voice_connection(): AbstractVoiceConnection | undefined {
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return this._voice_connection;
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}
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command_handler_boss(): AbstractCommandHandlerBoss {
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return this._command_boss;
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}
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get onconnectionstatechanged() : ConnectionStateListener {
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return this._connection_state_listener;
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}
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set onconnectionstatechanged(listener: ConnectionStateListener) {
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this._connection_state_listener = listener;
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}
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handshake_handler(): HandshakeHandler {
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return this._handshakeHandler;
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}
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remote_address(): ServerAddress {
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return this._remote_address;
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}
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private do_ping() {
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if(this._ping.last_request + this._ping.timeout < Date.now()) {
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this._ping.value = this._ping.timeout;
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this._ping.last_response = this._ping.last_request + 1;
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}
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if(this._ping.last_response > this._ping.last_request) {
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this._ping.last_request = 'now' in performance ? performance.now() : Date.now();
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this.sendData(JSON.stringify({
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type: 'ping',
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payload: (++this._ping.request_id).toString()
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}));
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}
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|
}
|
|
|
|
ping(): { native: number; javascript?: number } {
|
|
return {
|
|
javascript: this._ping.value,
|
|
native: this._ping.value_native
|
|
};
|
|
}
|
|
}
|
|
|
|
export function spawn_server_connection(handle: ConnectionHandler) : AbstractServerConnection {
|
|
return new ServerConnection(handle); /* will be overridden by the client */
|
|
}
|
|
|
|
export function destroy_server_connection(handle: AbstractServerConnection) {
|
|
if(!(handle instanceof ServerConnection))
|
|
throw "invalid handle";
|
|
handle.destroy();
|
|
} |