WIP refactor
This commit is contained in:
parent
3fa6d15848
commit
49835c1a6a
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@ -0,0 +1,245 @@
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'use strict';
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var sni = require('sni');
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var Packer = require('proxy-packer');
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module.exports.create = function (handlers) {
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var client = module.exports;
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client.pendingCommands = {};
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client.auth = null;
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client.wstunneler = null;
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client.localclients = {};
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client.authenticated = false;
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var multiplexed = {};
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var stream = require('stream');
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var Duplex = stream.Duplex;
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function SingleConn(tun, streamOpts) {
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// Proper duplex stream with automatic flow control (backpressure) management
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if(!(this instanceof SingleConn)) { return new SingleConn(tun, streamOpts); }
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Duplex.call(this, streamOpts);
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}
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SingleConn.create = function (opts) {
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return new SingleConn(opts);
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};
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if (!handlers) { handlers = {}; }
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// XXX TODO
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handlers.onAuthRequest = function (authRequest) {
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// XXX out of scope
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client._wsTunnelRemote._sendCommand('auth', authRequest).catch(function (err) { console.error('1', err); });
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};
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handlers.onAddToken = function (jwtoken) {
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// XXX out of scope
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client._wsTunnelRemote._sendCommand('add_token', jwtoken)
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.catch(function (err) {
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console.error('failed re-adding token', jwtoken, 'after reconnect', err);
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// Not sure if we should do something like remove the token here. It worked
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// once or it shouldn't have stayed in the list, so it's less certain why
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// it would have failed here.
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});
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};
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handlers.onAck = function (body) {
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var packBody = true;
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client._wsTunnelRemote.sendMessage(Packer.packHeader(null, body, 'control', packBody));
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};
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handlers.onNoHandler = function (cmd) {
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console.warn("[telebit] state.handlers['" + cmd[1] + "'] not set");
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console.warn(cmd[2]);
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};
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// TODO
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// make proxy-packer a readable stream?
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// create per-connection buffer?
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handlers.onNonReadable = function (/*fn*/) {
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client.wstunneler.pause();
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//packerHandlers.onReadable = fn;
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};
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handlers.onReadable = function () {
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//packerHandlers.onReadable();
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client.wstunneler.resume();
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};
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var authsent = false;
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function sendAllTokens() {
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if (client.auth) {
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authsent = true;
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handlers.onAuthRequest(client.auth);
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}
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client.sharedTokens.forEach(function (jwtoken) {
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// XXX out of scope
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if (client._state.debug) { console.log('[DEBUG] send token'); }
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authsent = true;
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handlers.onAddToken(jwtoken);
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});
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}
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function hyperPeek(tun) {
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var m;
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var str;
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if (tun.data) {
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if ('http' === tun.service) {
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str = tun.data.toString();
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m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
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tun._name = tun._hostname = (m && m[1].toLowerCase() || '').split(':')[0];
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}
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else if ('https' === tun.service || 'tls' === tun.service) {
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tun._name = tun._servername = sni(tun.data);
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} else {
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tun._name = '';
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}
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}
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}
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var packerHandlers = {
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oncontrol: function (opts) {
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var cmd, err;
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try {
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cmd = JSON.parse(opts.data.toString());
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} catch (err) {
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// ignore
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}
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if (!Array.isArray(cmd) || typeof cmd[0] !== 'number') {
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console.warn('received bad command "' + opts.data.toString() + '"');
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return;
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}
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if (cmd[0] < 0) {
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var cb = client.pendingCommands[-cmd[0]];
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if (!cb) {
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console.warn('received response for unknown request:', cmd);
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} else {
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cb.apply(null, cmd.slice(1));
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}
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return;
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}
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if (cmd[0] === 0) {
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console.warn('received dis-associated error from server', cmd[1]);
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if (client.connCallback) {
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client.connCallback(cmd[1]);
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}
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return;
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}
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if (cmd[1] === 'hello') {
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if (client._state.debug) { console.log('[DEBUG] hello received'); }
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sendAllTokens();
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if (client.connCallback) {
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client.connCallback();
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}
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// TODO: handle the versions and commands provided by 'hello' - isn't super important
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// yet since there is only one version and set of commands.
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err = null;
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} else if (cmd[1] === 'grant') {
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client.authenticated = true;
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if (client._state.handlers[cmd[1]]) {
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client._state.handlers[cmd[1]](cmd[2]);
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} else {
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handlers.onNoHandler(cmd);
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}
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return;
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} else if (cmd[1] === 'access_token') {
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client.authenticated = true;
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if (client._state.handlers[cmd[1]]) {
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client._state.handlers[cmd[1]](cmd[2]);
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} else {
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handlers.onNoHandler(cmd);
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}
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return;
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} else {
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err = { message: 'unknown command "'+cmd[1]+'"', code: 'E_UNKNOWN_COMMAND' };
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}
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handlers.onAck([-cmd[0], err]);
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}
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, onconnection: function (tun, handledCb) {
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var cid = tun._id = Packer.addrToId(tun);
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if (multiplexed[cid]) {
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throw new Error("[Sanity Error] a new connection can't already exist in the connection pool");
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}
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// this data should have been gathered already as part of the proxy protocol
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// but if it's available again here we can double check
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hyperPeek(tun);
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// the next data that comes in may be the next packet of data for this connection
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// and that may happen before the detection and assignment is complete
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handlers.onNonReadable(); // pause()
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// TODO use readable streams instead
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require(client._state.sortingHat).assign(client._state, tun, function (err, conn) {
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if (err) {
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err.message = err.message.replace(/:tun_id/, tun._id);
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console.info("[_onConnectError] opening '" + cid + "' failed because " + err.message);
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client._wsTunnelRemote.sendMessage(Packer.packHeader(tun, null, 'error'));
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return;
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}
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//handlers.on
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client.clientHandlers.add(conn, cid, tun);
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if (tun.data) { conn.write(tun.data); }
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handlers.onReadable(); // resume
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if ('function' === typeof handledCb) { handledCb(); }
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});
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}
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, onmessage: function (tun) {
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var cid = tun._id = Packer.addrToId(tun);
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var handled;
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hyperPeek(tun);
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handled = client.clientHandlers.write(cid, tun);
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if (!handled) {
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throw new Error("No 'message' event came before 'connection' event."
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+ " You're probably using a different version of proxy-packer on the server than the client");
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}
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}
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, onpause: function (opts) {
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var cid = Packer.addrToId(opts);
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if (client.localclients[cid]) {
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console.log("[TunnelPause] pausing '"+cid+"', remote received", opts.data.toString(), 'of', client.localclients[cid].tunnelWritten, 'sent');
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client.localclients[cid].manualPause = true;
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client.localclients[cid].pause();
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} else {
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console.log('[TunnelPause] remote tried pausing finished connection', cid);
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// Often we have enough latency that we've finished sending before we're told to pause, so
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// don't worry about sending back errors, since we won't be sending data over anyway.
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// var packBody = true;
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// wsTunnelRemote.sendMessage(Packer.packHeader(opts, {message: 'no matching connection', code: 'E_NO_CONN'}, 'error', packBody));
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}
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}
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, onresume: function (opts) {
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var cid = Packer.addrToId(opts);
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if (client.localclients[cid]) {
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console.log("[TunnelResume] resuming '"+cid+"', remote received", opts.data.toString(), 'of', client.localclients[cid].tunnelWritten, 'sent');
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client.localclients[cid].manualPause = false;
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client.localclients[cid].resume();
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} else {
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console.log('[TunnelResume] remote tried resuming finished connection', cid);
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// var packBody = true;
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// wsTunnelRemote.sendMessage(Packer.packHeader(opts, {message: 'no matching connection', code: 'E_NO_CONN'}, 'error', packBody));
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}
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}
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, onend: function (opts) {
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var cid = Packer.addrToId(opts);
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//console.log("[end] '" + cid + "'");
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client.clientHandlers.closeSingle(cid);
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}
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, onerror: function (opts) {
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var cid = Packer.addrToId(opts);
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//console.log("[error] '" + cid + "'", opts.code || '', opts.message);
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client.clientHandlers.closeSingle(cid);
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}
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};
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client.machine = Packer.create(packerHandlers);
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client.sharedTokens = [];
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return client;
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};
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454
lib/remote.js
454
lib/remote.js
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@ -1,6 +1,9 @@
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(function () {
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'use strict';
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// TODO use stream-based ws
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// https://github.com/websockets/ws/issues/596
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var PromiseA;
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try {
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PromiseA = require('bluebird');
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@ -8,7 +11,6 @@ try {
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PromiseA = global.Promise;
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}
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var WebSocket = require('ws');
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var sni = require('sni');
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var Packer = require('proxy-packer');
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var os = require('os');
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@ -19,35 +21,36 @@ function timeoutPromise(duration) {
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}
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function _connect(state) {
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// jshint latedef:false
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var defaultHttpTimeout = (2 * 60);
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var activityTimeout = state.activityTimeout || (defaultHttpTimeout - 5) * 1000;
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var pongTimeout = state.pongTimeout || 10*1000;
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// Allow the tunnel client to be created with no token. This will prevent the connection from
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// being established initialy and allows the caller to use `.append` for the first token so
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// they can get a promise that will provide feedback about invalid tokens.
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var tokens = [];
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var auth;
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if(!state.sortingHat) {
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state.sortingHat = "./sorting-hat.js";
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}
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var sharedPausedClients = [];
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var sharedTimeoutId;
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var client = require('./client').create({});
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// client.wstunneler = null;
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// client.pendingCommands = {};
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// client.machine = machine<Packer>
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// client.auth = null;
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// client.sharedTokens = [];
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// client.localclients = {};
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// client.authenticated = false;
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client._state = state;
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if (state.token) {
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if ('undefined' === state.token) {
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throw new Error("passed string 'undefined' as token");
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}
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tokens.push(state.token);
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client.sharedTokens.push(state.token);
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}
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var wstunneler;
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var authenticated = false;
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var authsent = false;
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var initialConnect = true;
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var localclients = {};
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var pausedClients = [];
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var clientHandlers = {
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add: function (conn, cid, tun) {
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localclients[cid] = conn;
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_initialConnect: true
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, add: function (conn, cid, tun) {
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client.localclients[cid] = conn;
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console.info("[connect] new client '" + cid + "' for '" + tun.name + ":" + tun.serviceport + "' "
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+ "(" + clientHandlers.count() + " clients)");
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@ -59,6 +62,7 @@ function _connect(state) {
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}
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conn.tunnelWritten = 0;
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// TODO use readable
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conn.on('data', function onLocalData(chunk) {
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//var chunk = conn.read();
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if (conn.tunnelClosing) {
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@ -72,13 +76,13 @@ function _connect(state) {
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// down the data we are getting to send over. We also want to pause all active connections
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// if any connections are paused to make things more fair so one connection doesn't get
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// stuff waiting for all other connections to finish because it tried writing near the border.
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var bufSize = wsHandlers.sendMessage(Packer.packHeader(tun, chunk));
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var bufSize = wsTunnelRemote.sendMessage(Packer.packHeader(tun, chunk));
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// Sending 2 messages instead of copying the buffer
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var bufSize2 = wsHandlers.sendMessage(chunk);
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if (pausedClients.length || (bufSize + bufSize2) > 1024*1024) {
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var bufSize2 = wsTunnelRemote.sendMessage(chunk);
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if (sharedPausedClients.length || (bufSize + bufSize2) > 1024*1024) {
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// console.log('[onLocalData] paused connection', cid, 'to allow websocket to catch up');
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conn.pause();
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pausedClients.push(conn);
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sharedPausedClients.push(conn);
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}
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});
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@ -87,7 +91,7 @@ function _connect(state) {
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console.info("[onLocalEnd] connection '" + cid + "' ended, will probably close soon");
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conn.tunnelClosing = true;
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if (!sentEnd) {
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wsHandlers.sendMessage(Packer.packHeader(tun, null, 'end'));
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wsTunnelRemote.sendMessage(Packer.packHeader(tun, null, 'end'));
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sentEnd = true;
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}
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});
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@ -95,22 +99,22 @@ function _connect(state) {
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console.info("[onLocalError] connection '" + cid + "' errored:", err);
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if (!sentEnd) {
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var packBody = true;
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wsHandlers.sendMessage(Packer.packHeader(tun, {message: err.message, code: err.code}, 'error', packBody));
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wsTunnelRemote.sendMessage(Packer.packHeader(tun, {message: err.message, code: err.code}, 'error', packBody));
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sentEnd = true;
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}
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});
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conn.on('close', function onLocalClose(hadErr) {
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delete localclients[cid];
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delete client.localclients[cid];
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console.log('[onLocalClose] closed "' + cid + '" read:'+conn.tunnelRead+', wrote:'+conn.tunnelWritten+' (' + clientHandlers.count() + ' clients)');
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if (!sentEnd) {
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wsHandlers.sendMessage(Packer.packHeader(tun, null, hadErr && 'error' || 'end'));
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wsTunnelRemote.sendMessage(Packer.packHeader(tun, null, hadErr && 'error' || 'end'));
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sentEnd = true;
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}
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});
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}
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, write: function (cid, opts) {
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var conn = localclients[cid];
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var conn = client.localclients[cid];
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if (!conn) {
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return false;
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}
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@ -128,12 +132,12 @@ function _connect(state) {
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if (!conn.remotePaused && conn.bufferSize > 1024*1024) {
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var packBody = true;
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wsHandlers.sendMessage(Packer.packHeader(opts, conn.tunnelRead, 'pause', packBody));
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wsTunnelRemote.sendMessage(Packer.packHeader(opts, conn.tunnelRead, 'pause', packBody));
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conn.remotePaused = true;
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conn.once('drain', function () {
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var packBody = true;
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wsHandlers.sendMessage(Packer.packHeader(opts, conn.tunnelRead, 'resume', packBody));
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wsTunnelRemote.sendMessage(Packer.packHeader(opts, conn.tunnelRead, 'resume', packBody));
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conn.remotePaused = false;
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});
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}
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@ -141,13 +145,13 @@ function _connect(state) {
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}
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, closeSingle: function (cid) {
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if (!localclients[cid]) {
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if (!client.localclients[cid]) {
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return;
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}
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console.log('[closeSingle]', cid);
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PromiseA.resolve().then(function () {
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var conn = localclients[cid];
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var conn = client.localclients[cid];
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conn.tunnelClosing = true;
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conn.end();
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@ -158,61 +162,65 @@ function _connect(state) {
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// Otherwise we want the connection to be able to finish, but we also want to impose
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// a time limit for it to drain, since it shouldn't have more than 1MB buffered.
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return new PromiseA(function (resolve) {
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var timeoutId = setTimeout(resolve, 60*1000);
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var myTimeoutId = setTimeout(resolve, 60*1000);
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conn.once('drain', function () {
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clearTimeout(timeoutId);
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clearTimeout(myTimeoutId);
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setTimeout(resolve, 500);
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});
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});
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}).then(function () {
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if (localclients[cid]) {
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if (client.localclients[cid]) {
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console.warn('[closeSingle]', cid, 'connection still present after calling `end`');
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localclients[cid].destroy();
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client.localclients[cid].destroy();
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return timeoutPromise(500);
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}
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}).then(function () {
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if (localclients[cid]) {
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if (client.localclients[cid]) {
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console.error('[closeSingle]', cid, 'connection still present after calling `destroy`');
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delete localclients[cid];
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delete client.localclients[cid];
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}
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}).catch(function (err) {
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console.error('[closeSingle] failed to close connection', cid, err.toString());
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delete localclients[cid];
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delete client.localclients[cid];
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});
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}
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, closeAll: function () {
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console.log('[closeAll]');
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Object.keys(localclients).forEach(function (cid) {
|
||||
Object.keys(client.localclients).forEach(function (cid) {
|
||||
clientHandlers.closeSingle(cid);
|
||||
});
|
||||
}
|
||||
|
||||
, count: function () {
|
||||
return Object.keys(localclients).length;
|
||||
return Object.keys(client.localclients).length;
|
||||
}
|
||||
};
|
||||
|
||||
var pendingCommands = {};
|
||||
function sendCommand(name) {
|
||||
var DEFAULT_HTTP_TIMEOUT = (2 * 60);
|
||||
var wsTunnelRemote = {
|
||||
_activityTimeout: state.activityTimeout || (DEFAULT_HTTP_TIMEOUT - 5) * 1000
|
||||
, _pongTimeout: state.pongTimeout || 10*1000
|
||||
, _lastActivity: 0
|
||||
, _sendCommand: function (name) {
|
||||
var id = Math.ceil(1e9 * Math.random());
|
||||
var cmd = [id, name].concat(Array.prototype.slice.call(arguments, 1));
|
||||
if (state.debug) { console.log('[DEBUG] command sending', cmd); }
|
||||
|
||||
var packBody = true;
|
||||
wsHandlers.sendMessage(Packer.packHeader(null, cmd, 'control', packBody));
|
||||
wsTunnelRemote.sendMessage(Packer.packHeader(null, cmd, 'control', packBody));
|
||||
setTimeout(function () {
|
||||
if (pendingCommands[id]) {
|
||||
if (client.pendingCommands[id]) {
|
||||
console.warn('command', name, id, 'timed out');
|
||||
pendingCommands[id]({
|
||||
client.pendingCommands[id]({
|
||||
message: 'response not received in time'
|
||||
, code: 'E_TIMEOUT'
|
||||
});
|
||||
}
|
||||
}, pongTimeout);
|
||||
}, wsTunnelRemote._pongTimeout);
|
||||
|
||||
return new PromiseA(function (resolve, reject) {
|
||||
pendingCommands[id] = function (err, result) {
|
||||
delete pendingCommands[id];
|
||||
client.pendingCommands[id] = function (err, result) {
|
||||
delete client.pendingCommands[id];
|
||||
if (err) {
|
||||
reject(err);
|
||||
} else {
|
||||
|
|
@ -221,278 +229,93 @@ function _connect(state) {
|
|||
};
|
||||
});
|
||||
}
|
||||
|
||||
function sendAllTokens() {
|
||||
if (auth) {
|
||||
authsent = true;
|
||||
sendCommand('auth', auth).catch(function (err) { console.error('1', err); });
|
||||
}
|
||||
tokens.forEach(function (jwtoken) {
|
||||
if (state.debug) { console.log('[DEBUG] send token'); }
|
||||
authsent = true;
|
||||
sendCommand('add_token', jwtoken)
|
||||
.catch(function (err) {
|
||||
console.error('failed re-adding token', jwtoken, 'after reconnect', err);
|
||||
// Not sure if we should do something like remove the token here. It worked
|
||||
// once or it shouldn't have stayed in the list, so it's less certain why
|
||||
// it would have failed here.
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
function noHandler(cmd) {
|
||||
console.warn("[telebit] state.handlers['" + cmd[1] + "'] not set");
|
||||
console.warn(cmd[2]);
|
||||
}
|
||||
|
||||
var connCallback;
|
||||
|
||||
function hyperPeek(tun) {
|
||||
var m;
|
||||
var str;
|
||||
if (tun.data) {
|
||||
if ('http' === tun.service) {
|
||||
str = tun.data.toString();
|
||||
m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
|
||||
tun._name = tun._hostname = (m && m[1].toLowerCase() || '').split(':')[0];
|
||||
}
|
||||
else if ('https' === tun.service || 'tls' === tun.service) {
|
||||
tun._name = tun._servername = sni(tun.data);
|
||||
} else {
|
||||
tun._name = '';
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var packerHandlers = {
|
||||
oncontrol: function (opts) {
|
||||
var cmd, err;
|
||||
try {
|
||||
cmd = JSON.parse(opts.data.toString());
|
||||
} catch (err) {}
|
||||
if (!Array.isArray(cmd) || typeof cmd[0] !== 'number') {
|
||||
console.warn('received bad command "' + opts.data.toString() + '"');
|
||||
return;
|
||||
}
|
||||
|
||||
if (cmd[0] < 0) {
|
||||
var cb = pendingCommands[-cmd[0]];
|
||||
if (!cb) {
|
||||
console.warn('received response for unknown request:', cmd);
|
||||
} else {
|
||||
cb.apply(null, cmd.slice(1));
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (cmd[0] === 0) {
|
||||
console.warn('received dis-associated error from server', cmd[1]);
|
||||
if (connCallback) {
|
||||
connCallback(cmd[1]);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (cmd[1] === 'hello') {
|
||||
if (state.debug) { console.log('[DEBUG] hello received'); }
|
||||
sendAllTokens();
|
||||
if (connCallback) {
|
||||
connCallback();
|
||||
}
|
||||
// TODO: handle the versions and commands provided by 'hello' - isn't super important
|
||||
// yet since there is only one version and set of commands.
|
||||
err = null;
|
||||
} else if (cmd[1] === 'grant') {
|
||||
authenticated = true;
|
||||
if (state.handlers[cmd[1]]) {
|
||||
state.handlers[cmd[1]](cmd[2]);
|
||||
} else {
|
||||
noHandler(cmd);
|
||||
}
|
||||
return;
|
||||
} else if (cmd[1] === 'access_token') {
|
||||
authenticated = true;
|
||||
if (state.handlers[cmd[1]]) {
|
||||
state.handlers[cmd[1]](cmd[2]);
|
||||
} else {
|
||||
noHandler(cmd);
|
||||
}
|
||||
return;
|
||||
} else {
|
||||
err = { message: 'unknown command "'+cmd[1]+'"', code: 'E_UNKNOWN_COMMAND' };
|
||||
}
|
||||
|
||||
var packBody = true;
|
||||
wsHandlers.sendMessage(Packer.packHeader(null, [-cmd[0], err], 'control', packBody));
|
||||
}
|
||||
|
||||
, onconnection: function (tun) {
|
||||
var cid = tun._id = Packer.addrToId(tun);
|
||||
|
||||
// this data should have been gathered already as part of the proxy protocol
|
||||
// but if it's available again here we can double check
|
||||
hyperPeek(tun);
|
||||
|
||||
// TODO use readable streams instead
|
||||
wstunneler.pause();
|
||||
require(state.sortingHat).assign(state, tun, function (err, conn) {
|
||||
if (err) {
|
||||
err.message = err.message.replace(/:tun_id/, tun._id);
|
||||
packerHandlers._onConnectError(cid, tun, err);
|
||||
return;
|
||||
}
|
||||
clientHandlers.add(conn, cid, tun);
|
||||
if (tun.data) { conn.write(tun.data); }
|
||||
wstunneler.resume();
|
||||
});
|
||||
}
|
||||
|
||||
, onmessage: function (tun) {
|
||||
var cid = tun._id = Packer.addrToId(tun);
|
||||
var handled;
|
||||
|
||||
hyperPeek(tun);
|
||||
|
||||
handled = clientHandlers.write(cid, tun);
|
||||
|
||||
// quasi backwards compat
|
||||
if (!handled) { console.log("[debug] did not get 'connection' event"); packerHandlers.onconnection(tun); }
|
||||
}
|
||||
|
||||
, onpause: function (opts) {
|
||||
var cid = Packer.addrToId(opts);
|
||||
if (localclients[cid]) {
|
||||
console.log("[TunnelPause] pausing '"+cid+"', remote received", opts.data.toString(), 'of', localclients[cid].tunnelWritten, 'sent');
|
||||
localclients[cid].manualPause = true;
|
||||
localclients[cid].pause();
|
||||
} else {
|
||||
console.log('[TunnelPause] remote tried pausing finished connection', cid);
|
||||
// Often we have enough latency that we've finished sending before we're told to pause, so
|
||||
// don't worry about sending back errors, since we won't be sending data over anyway.
|
||||
// var packBody = true;
|
||||
// wsHandlers.sendMessage(Packer.packHeader(opts, {message: 'no matching connection', code: 'E_NO_CONN'}, 'error', packBody));
|
||||
}
|
||||
}
|
||||
, onresume: function (opts) {
|
||||
var cid = Packer.addrToId(opts);
|
||||
if (localclients[cid]) {
|
||||
console.log("[TunnelResume] resuming '"+cid+"', remote received", opts.data.toString(), 'of', localclients[cid].tunnelWritten, 'sent');
|
||||
localclients[cid].manualPause = false;
|
||||
localclients[cid].resume();
|
||||
} else {
|
||||
console.log('[TunnelResume] remote tried resuming finished connection', cid);
|
||||
// var packBody = true;
|
||||
// wsHandlers.sendMessage(Packer.packHeader(opts, {message: 'no matching connection', code: 'E_NO_CONN'}, 'error', packBody));
|
||||
}
|
||||
}
|
||||
|
||||
, onend: function (opts) {
|
||||
var cid = Packer.addrToId(opts);
|
||||
//console.log("[end] '" + cid + "'");
|
||||
clientHandlers.closeSingle(cid);
|
||||
}
|
||||
, onerror: function (opts) {
|
||||
var cid = Packer.addrToId(opts);
|
||||
//console.log("[error] '" + cid + "'", opts.code || '', opts.message);
|
||||
clientHandlers.closeSingle(cid);
|
||||
}
|
||||
|
||||
, _onConnectError: function (cid, opts, err) {
|
||||
console.info("[_onConnectError] opening '" + cid + "' failed because " + err.message);
|
||||
wsHandlers.sendMessage(Packer.packHeader(opts, null, 'error'));
|
||||
}
|
||||
};
|
||||
|
||||
var lastActivity;
|
||||
var timeoutId;
|
||||
var wsHandlers = {
|
||||
refreshTimeout: function () {
|
||||
lastActivity = Date.now();
|
||||
, refreshTimeout: function () {
|
||||
wsTunnelRemote._lastActivity = Date.now();
|
||||
}
|
||||
, checkTimeout: function () {
|
||||
if (!wstunneler) {
|
||||
if (!client.wstunneler) {
|
||||
console.warn('checkTimeout called when websocket already closed');
|
||||
return;
|
||||
}
|
||||
// Determine how long the connection has been "silent", ie no activity.
|
||||
var silent = Date.now() - lastActivity;
|
||||
var silent = Date.now() - wsTunnelRemote._lastActivity;
|
||||
|
||||
// If we have had activity within the last activityTimeout then all we need to do is
|
||||
// call this function again at the soonest time when the connection could be timed out.
|
||||
if (silent < activityTimeout) {
|
||||
timeoutId = setTimeout(wsHandlers.checkTimeout, activityTimeout-silent);
|
||||
if (silent < wsTunnelRemote._activityTimeout) {
|
||||
sharedTimeoutId = setTimeout(wsTunnelRemote.checkTimeout, wsTunnelRemote._activityTimeout-silent);
|
||||
}
|
||||
|
||||
// Otherwise we check to see if the pong has also timed out, and if not we send a ping
|
||||
// and call this function again when the pong will have timed out.
|
||||
else if (silent < activityTimeout + pongTimeout) {
|
||||
else if (silent < wsTunnelRemote._activityTimeout + wsTunnelRemote._pongTimeout) {
|
||||
console.log('pinging tunnel server');
|
||||
try {
|
||||
wstunneler.ping();
|
||||
client.wstunneler.ping();
|
||||
} catch (err) {
|
||||
console.warn('failed to ping tunnel server', err);
|
||||
}
|
||||
timeoutId = setTimeout(wsHandlers.checkTimeout, pongTimeout);
|
||||
sharedTimeoutId = setTimeout(wsTunnelRemote.checkTimeout, wsTunnelRemote._pongTimeout);
|
||||
}
|
||||
|
||||
// Last case means the ping we sent before didn't get a response soon enough, so we
|
||||
// need to close the websocket connection.
|
||||
else {
|
||||
console.log('connection timed out');
|
||||
wstunneler.close(1000, 'connection timeout');
|
||||
client.wstunneler.close(1000, 'connection timeout');
|
||||
}
|
||||
}
|
||||
|
||||
, onOpen: function () {
|
||||
console.info("[open] connected to '" + (state.wss || state.relay) + "'");
|
||||
wsHandlers.refreshTimeout();
|
||||
wsTunnelRemote.refreshTimeout();
|
||||
|
||||
timeoutId = setTimeout(wsHandlers.checkTimeout, activityTimeout);
|
||||
sharedTimeoutId = setTimeout(wsTunnelRemote.checkTimeout, wsTunnelRemote._activityTimeout);
|
||||
|
||||
wstunneler._socket.on('drain', function () {
|
||||
client.wstunneler._socket.on('drain', function () {
|
||||
// the websocket library has it's own buffer apart from node's socket buffer, but that one
|
||||
// is much more difficult to watch, so we watch for the lower level buffer to drain and
|
||||
// then check to see if the upper level buffer is still too full to write to. Note that
|
||||
// the websocket library buffer has something to do with compression, so I'm not requiring
|
||||
// that to be 0 before we start up again.
|
||||
if (wstunneler.bufferedAmount > 128*1024) {
|
||||
if (client.wstunneler.bufferedAmount > 128*1024) {
|
||||
return;
|
||||
}
|
||||
|
||||
pausedClients.forEach(function (conn) {
|
||||
sharedPausedClients.forEach(function (conn) {
|
||||
if (!conn.manualPause) {
|
||||
// console.log('resuming connection', conn.tunnelCid, 'now the websocket has caught up');
|
||||
conn.resume();
|
||||
}
|
||||
});
|
||||
|
||||
pausedClients.length = 0;
|
||||
sharedPausedClients.length = 0;
|
||||
});
|
||||
|
||||
//Call either Open or Reconnect handlers.
|
||||
if(state.handlers.onOpen && initialConnect) {
|
||||
if(state.handlers.onOpen && clientHandlers._initialConnect) {
|
||||
state.handlers.onOpen();
|
||||
} else if (state.handlers.onReconnect && !initialConnect) {
|
||||
} else if (state.handlers.onReconnect && !clientHandlers._initialConnect) {
|
||||
state.handlers.onReconnect();
|
||||
}
|
||||
initialConnect = false;
|
||||
clientHandlers._initialConnect = false;
|
||||
}
|
||||
|
||||
, onClose: function () {
|
||||
clearTimeout(timeoutId);
|
||||
wstunneler = null;
|
||||
clearTimeout(sharedTimeoutId);
|
||||
client.wstunneler = null;
|
||||
clientHandlers.closeAll();
|
||||
|
||||
var error = new Error('websocket connection closed before response');
|
||||
error.code = 'E_CONN_CLOSED';
|
||||
Object.keys(pendingCommands).forEach(function (id) {
|
||||
pendingCommands[id](error);
|
||||
Object.keys(client.pendingCommands).forEach(function (id) {
|
||||
client.pendingCommands[id](error);
|
||||
});
|
||||
if (connCallback) {
|
||||
connCallback(error);
|
||||
if (client.connCallback) {
|
||||
client.connCallback(error);
|
||||
}
|
||||
|
||||
if (!authenticated) {
|
||||
if (!client.authenticated) {
|
||||
if(state.handlers.onError) {
|
||||
var err = new Error('Failed to connect on first attempt... check authentication');
|
||||
state.handlers.onError(err);
|
||||
|
|
@ -501,14 +324,14 @@ function _connect(state) {
|
|||
state.handlers.onClose();
|
||||
}
|
||||
console.info('[close] failed on first attempt... check authentication.');
|
||||
timeoutId = null;
|
||||
sharedTimeoutId = null;
|
||||
}
|
||||
else if (tokens.length) {
|
||||
else if (client.sharedTokens.length) {
|
||||
if(state.handlers.onDisconnect) {
|
||||
state.handlers.onDisconnect();
|
||||
}
|
||||
console.info('[retry] disconnected and waiting...');
|
||||
timeoutId = setTimeout(connect, 5000);
|
||||
sharedTimeoutId = setTimeout(connect, 5000);
|
||||
} else {
|
||||
if(state.handlers.onClose) {
|
||||
state.handlers.onClose();
|
||||
|
|
@ -519,25 +342,25 @@ function _connect(state) {
|
|||
, onError: function (err) {
|
||||
if ('ENOTFOUND' === err.code) {
|
||||
// DNS issue, probably network is disconnected
|
||||
timeoutId = setTimeout(connect, 90 * 1000);
|
||||
sharedTimeoutId = setTimeout(connect, 90 * 1000);
|
||||
return;
|
||||
}
|
||||
console.error("[tunnel error] " + err.message);
|
||||
console.error(err);
|
||||
if (connCallback) {
|
||||
connCallback(err);
|
||||
if (client.connCallback) {
|
||||
client.connCallback(err);
|
||||
}
|
||||
}
|
||||
|
||||
, sendMessage: function (msg) {
|
||||
if (wstunneler) {
|
||||
if (client.wstunneler) {
|
||||
try {
|
||||
wstunneler.send(msg, {binary: true});
|
||||
return wstunneler.bufferedAmount;
|
||||
client.wstunneler.send(msg, {binary: true});
|
||||
return client.wstunneler.bufferedAmount;
|
||||
} catch (err) {
|
||||
// There is a chance that this occurred after the websocket was told to close
|
||||
// and before it finished, in which case we don't need to log the error.
|
||||
if (wstunneler.readyState !== wstunneler.CLOSING) {
|
||||
if (client.wstunneler.readyState !== client.wstunneler.CLOSING) {
|
||||
console.warn('[sendMessage] error sending websocket message', err);
|
||||
}
|
||||
}
|
||||
|
|
@ -546,13 +369,13 @@ function _connect(state) {
|
|||
};
|
||||
|
||||
function connect() {
|
||||
if (wstunneler) {
|
||||
if (client.wstunneler) {
|
||||
console.warn('attempted to connect with connection already active');
|
||||
return;
|
||||
}
|
||||
if (!tokens.length) {
|
||||
if (!client.sharedTokens.length) {
|
||||
if (state.config.email) {
|
||||
auth = {
|
||||
client.auth = {
|
||||
subject: state.config.email
|
||||
, subject_scheme: 'mailto'
|
||||
// TODO create domains list earlier
|
||||
|
|
@ -567,44 +390,44 @@ function _connect(state) {
|
|||
};
|
||||
}
|
||||
}
|
||||
timeoutId = null;
|
||||
var machine = Packer.create(packerHandlers);
|
||||
sharedTimeoutId = null;
|
||||
|
||||
console.info("[connect] '" + (state.wss || state.relay) + "'");
|
||||
var tunnelUrl = (state.wss || state.relay).replace(/\/$/, '') + '/'; // + auth;
|
||||
wstunneler = new WebSocket(tunnelUrl, { rejectUnauthorized: !state.insecure });
|
||||
wstunneler.on('open', wsHandlers.onOpen);
|
||||
wstunneler.on('close', wsHandlers.onClose);
|
||||
wstunneler.on('error', wsHandlers.onError);
|
||||
var tunnelUrl = (state.wss || state.relay).replace(/\/$/, '') + '/'; // + client.auth;
|
||||
var wsOpts = { binary: true, rejectUnauthorized: !state.insecure };
|
||||
client.wstunneler = new WebSocket(tunnelUrl, wsOpts);
|
||||
client.wsreader = require('./ws-readable').create(client.wstunneler);
|
||||
client.wstunneler.on('open', wsTunnelRemote.onOpen);
|
||||
client.wstunneler.on('close', wsTunnelRemote.onClose);
|
||||
client.wstunneler.on('error', wsTunnelRemote.onError);
|
||||
|
||||
// Our library will automatically handle sending the pong respose to ping requests.
|
||||
wstunneler.on('ping', wsHandlers.refreshTimeout);
|
||||
wstunneler.on('pong', wsHandlers.refreshTimeout);
|
||||
wstunneler.on('message', function (data, flags) {
|
||||
wsHandlers.refreshTimeout();
|
||||
client.wstunneler.on('ping', wsTunnelRemote.refreshTimeout);
|
||||
client.wstunneler.on('pong', wsTunnelRemote.refreshTimeout);
|
||||
client.wstunneler.on('message', function (data, flags) {
|
||||
wsTunnelRemote.refreshTimeout();
|
||||
if (data.error || '{' === data[0]) {
|
||||
console.log(data);
|
||||
return;
|
||||
}
|
||||
machine.fns.addChunk(data, flags);
|
||||
client.machine.fns.addChunk(data, flags);
|
||||
});
|
||||
}
|
||||
connect();
|
||||
|
||||
var connPromise;
|
||||
return {
|
||||
end: function(cb) {
|
||||
tokens.length = 0;
|
||||
if (timeoutId) {
|
||||
clearTimeout(timeoutId);
|
||||
timeoutId = null;
|
||||
var xyzHandlers = {
|
||||
_connPromise: null
|
||||
, end: function(cb) {
|
||||
client.sharedTokens.length = 0;
|
||||
if (sharedTimeoutId) {
|
||||
clearTimeout(sharedTimeoutId);
|
||||
sharedTimeoutId = null;
|
||||
}
|
||||
|
||||
if (wstunneler) {
|
||||
if (client.wstunneler) {
|
||||
try {
|
||||
wstunneler.close(cb);
|
||||
client.wstunneler.close(cb);
|
||||
} catch(e) {
|
||||
console.error("[error] wstunneler.close()");
|
||||
console.error("[error] client.wstunneler.close()");
|
||||
console.error(e);
|
||||
}
|
||||
}
|
||||
|
|
@ -616,28 +439,28 @@ function _connect(state) {
|
|||
if ('undefined' === token) {
|
||||
throw new Error("attempted to append token as the string 'undefined'");
|
||||
}
|
||||
if (tokens.indexOf(token) >= 0) {
|
||||
if (client.sharedTokens.indexOf(token) >= 0) {
|
||||
return PromiseA.resolve();
|
||||
}
|
||||
tokens.push(token);
|
||||
client.sharedTokens.push(token);
|
||||
var prom;
|
||||
if (tokens.length === 1 && !wstunneler) {
|
||||
if (client.sharedTokens.length === 1 && !client.wstunneler) {
|
||||
// We just added the only token in the list, and the websocket connection isn't up
|
||||
// so we need to restart the connection.
|
||||
if (timeoutId) {
|
||||
if (sharedTimeoutId) {
|
||||
// Handle the case were the last token was removed and this token added between
|
||||
// reconnect attempts to make sure we don't try openning multiple connections.
|
||||
clearTimeout(timeoutId);
|
||||
timeoutId = null;
|
||||
clearTimeout(sharedTimeoutId);
|
||||
sharedTimeoutId = null;
|
||||
}
|
||||
|
||||
// We want this case to behave as much like the other case as we can, but we don't have
|
||||
// the same kind of reponses when we open brand new connections, so we have to rely on
|
||||
// the 'hello' and the 'un-associated' error commands to determine if the token is good.
|
||||
prom = connPromise = new PromiseA(function (resolve, reject) {
|
||||
connCallback = function (err) {
|
||||
connCallback = null;
|
||||
connPromise = null;
|
||||
prom = xyzHandlers._connPromise = new PromiseA(function (resolve, reject) {
|
||||
client.connCallback = function (err) {
|
||||
client.connCallback = null;
|
||||
xyzHandlers._connPromise = null;
|
||||
if (err) {
|
||||
reject(err);
|
||||
} else {
|
||||
|
|
@ -647,19 +470,19 @@ function _connect(state) {
|
|||
});
|
||||
connect();
|
||||
}
|
||||
else if (connPromise) {
|
||||
prom = connPromise.then(function () {
|
||||
return sendCommand('add_token', token);
|
||||
else if (xyzHandlers._connPromise) {
|
||||
prom = xyzHandlers._connPromise.then(function () {
|
||||
return wsTunnelRemote._sendCommand('add_token', token);
|
||||
});
|
||||
}
|
||||
else {
|
||||
prom = sendCommand('add_token', token);
|
||||
prom = wsTunnelRemote._sendCommand('add_token', token);
|
||||
}
|
||||
|
||||
prom.catch(function (err) {
|
||||
console.error('adding token', token, 'failed:', err);
|
||||
// Most probably an invalid token of some kind, so we don't really want to keep it.
|
||||
tokens.splice(tokens.indexOf(token), 1);
|
||||
client.sharedTokens.splice(client.sharedTokens.indexOf(token), 1);
|
||||
});
|
||||
|
||||
return prom;
|
||||
|
|
@ -670,16 +493,16 @@ function _connect(state) {
|
|||
}
|
||||
|
||||
if (token === '*') {
|
||||
tokens.length = 0;
|
||||
client.sharedTokens.length = 0;
|
||||
} else {
|
||||
var index = tokens.indexOf(token);
|
||||
var index = client.sharedTokens.indexOf(token);
|
||||
if (index < 0) {
|
||||
return PromiseA.resolve();
|
||||
}
|
||||
tokens.splice(index);
|
||||
client.sharedTokens.splice(index);
|
||||
}
|
||||
|
||||
var prom = sendCommand('delete_token', token);
|
||||
var prom = wsTunnelRemote._sendCommand('delete_token', token);
|
||||
prom.catch(function (err) {
|
||||
console.error('clearing token', token, 'failed:', err);
|
||||
});
|
||||
|
|
@ -687,6 +510,11 @@ function _connect(state) {
|
|||
return prom;
|
||||
}
|
||||
};
|
||||
|
||||
client._wsTunnelRemote = wsTunnelRemote;
|
||||
client.clientHandlers = clientHandlers;
|
||||
connect();
|
||||
return xyzHandlers;
|
||||
}
|
||||
|
||||
module.exports.connect = _connect;
|
||||
|
|
|
|||
|
|
@ -372,7 +372,7 @@ module.exports.assign = function (state, tun, cb) {
|
|||
serveStatic = state._serveStatic(conf.handler, { dotfiles: 'allow', index: [ 'index.html' ] });
|
||||
dlStatic = state._serveStatic(conf.handler, { acceptRanges: false, dotfiles: 'allow', index: [ 'index.html' ] });
|
||||
serveIndex = state._serveIndex(conf.handler, {
|
||||
hidden: true, icons: true
|
||||
hidden: true, icons: true, view: 'tiles'
|
||||
, template: require('serve-tpl-attachment')({ privatefiles: 'ignore' })
|
||||
});
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,75 @@
|
|||
// https://github.com/websockets/ws/issues/596
|
||||
var WSStream = module.exports = (function(){
|
||||
var util = require('util');
|
||||
var stream = require('stream');
|
||||
var Duplex = stream.Duplex || require('readable-stream').Duplex;
|
||||
var WSStream = function(ws, wsOptions, streamingOptions) { // Only the websocket (ws) is mandatory
|
||||
// Proper duplex stream with automatic flow control (backpressure) management
|
||||
if(!(this instanceof WSStream)) return new WSStream(ws, wsOptions, streamingOptions);
|
||||
if(!(wsOptions instanceof Object)) wsOptions = {binary: false};
|
||||
Duplex.call(this, streamingOptions);
|
||||
this.waitingForData = true;
|
||||
this.writeModBufferEmpty = true;
|
||||
this.webSocket = ws;
|
||||
this.webSocketOptions = wsOptions;
|
||||
this.on('finish', finishEventHandler(this));
|
||||
ws._socket.write = writeMod(ws._socket.write, this);
|
||||
ws._socket.on('drain', drainEventHandler(this));
|
||||
ws._socket.on('error', errorRouter(this));
|
||||
ws.on('close', closeEventHandler(this));
|
||||
ws.on('message', messageHandler(this));
|
||||
},
|
||||
finishEventHandler = function(self) {
|
||||
return function() {
|
||||
if(self.webSocket !== null) {
|
||||
self.webSocket.close();
|
||||
self.webSocket = null;
|
||||
};
|
||||
self.emit('close');
|
||||
};
|
||||
},
|
||||
writeMod = function(nativeWriteFunction, self) {
|
||||
return function() {
|
||||
return self.writeModBufferEmpty = nativeWriteFunction.apply(this, arguments);
|
||||
};
|
||||
},
|
||||
drainEventHandler = function(self) {
|
||||
return function() {
|
||||
self.writeModBufferEmpty = true;
|
||||
self.emit('drain');
|
||||
};
|
||||
},
|
||||
closeEventHandler = function(self) {
|
||||
return function() {
|
||||
self.push(null);
|
||||
}
|
||||
},
|
||||
errorRouter = function(self) {
|
||||
return function() {
|
||||
self.emit.apply(self, ['error'].concat(arguments));
|
||||
};
|
||||
},
|
||||
messageHandler = function(self) {
|
||||
return function(data) {
|
||||
if(!self.push(data) && self.waitingForData) {
|
||||
self.webSocket._socket.pause();
|
||||
self.waitingForData = false;
|
||||
}
|
||||
};
|
||||
};
|
||||
util.inherits(WSStream, Duplex);
|
||||
WSStream.prototype._read = function(size) {
|
||||
if(!this.waitingForData) {
|
||||
this.waitingForData = true;
|
||||
this.webSocket._socket.resume();
|
||||
}
|
||||
};
|
||||
WSStream.prototype._write = function(chunk, encoding, callback) {
|
||||
this.webSocket.send(chunk, this.webSocketOptions, callback);
|
||||
return this.writeModBufferEmpty;
|
||||
};
|
||||
return WSStream;
|
||||
}());
|
||||
module.exports.create = function (ws, wsOpts, streamOpts) {
|
||||
return new WSStream(ws, wsOpts, streamOpts);
|
||||
};
|
||||
Loading…
Reference in New Issue