better handling and error handling
This commit is contained in:
AJ ONeal
parent
1bdfad6691
commit
71b3815c52
213
wsclient.js
213
wsclient.js
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@ -39,113 +39,140 @@ request.get('https://pokemap.hellabit.com:3000?access_token=' + token, { rejectU
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return;
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//*/
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var wstunneler = new WebSocket('wss://pokemap.hellabit.com:3000/?access_token=' + token, { rejectUnauthorized: false });
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wstunneler.on('open', function () {
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console.log('[open] tunneler connected');
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var localclients = {};
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var tunnelUrl = 'wss://pokemap.hellabit.com:3000/?access_token=' + token;
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/*
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setInterval(function () {
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console.log('');
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console.log('localclients.length:', Object.keys(localclients).length);
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console.log('');
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}, 5000);
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*/
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function run() {
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var wstunneler = new WebSocket(tunnelUrl, { rejectUnauthorized: false });
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//wstunneler.send(token);
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function onOpen() {
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console.log('[open] tunneler connected');
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var localclients = {};
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// BaaS / Backendless / noBackend / horizon.io
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// user authentication
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// a place to store data
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// file management
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// Synergy Teamwork Paradigm = Jabberwocky
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var pack = require('tunnel-packer').pack;
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/*
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setInterval(function () {
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console.log('');
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console.log('localclients.length:', Object.keys(localclients).length);
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console.log('');
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}, 5000);
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*/
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function onMessage(opts) {
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var cid = addrToId(opts);
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console.log('[wsclient] onMessage:', cid);
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var service = opts.service;
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var port = services[service];
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var lclient;
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var servername;
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var str;
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var m;
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//wstunneler.send(token);
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if (opts.data.byteLength < 20) {
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if ('|__ERROR__|' === opts.data.toString('ascii')
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|| '|__END__|' === opts.data.toString('ascii')) {
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// BaaS / Backendless / noBackend / horizon.io
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// user authentication
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// a place to store data
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// file management
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// Synergy Teamwork Paradigm = Jabberwocky
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var pack = require('tunnel-packer').pack;
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var handlers = {
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onmessage: function (opts) {
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var cid = addrToId(opts);
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console.log('[wsclient] onMessage:', cid);
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var service = opts.service;
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var port = services[service];
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var lclient;
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var servername;
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var str;
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var m;
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console.log("['" + opts.data.toString('ascii') + "'] '" + cid + "'");
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if (localclients[cid]) {
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localclients[cid].end();
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if (opts.data.byteLength < 20) {
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if ('|__ERROR__|' === opts.data.toString('ascii')) {
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handlers.onerror(opts);
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return;
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}
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else if ('|__END__|' === opts.data.toString('ascii')) {
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handlers.onend(opts);
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return;
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}
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}
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function endWithError() {
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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}
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if (localclients[cid]) {
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console.log("[=>] received data from '" + cid + "' =>", opts.data.byteLength);
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localclients[cid].write(opts.data);
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return;
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}
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else if ('http' === service) {
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str = opts.data.toString();
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m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
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servername = (m && m[1].toLowerCase() || '').split(':')[0];
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}
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else if ('https' === service) {
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servername = sni(opts.data);
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}
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else {
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endWithError();
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return;
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}
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if (!servername) {
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console.warn("|__ERROR__| no servername found for '" + cid + "'");
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console.warn(opts.data.toString());
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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return;
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}
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console.log("servername: '" + servername + "'");
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lclient = localclients[cid] = net.createConnection({ port: port, host: '127.0.0.1' }, function () {
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console.log("[=>] first packet from tunneler to '" + cid + "' as '" + opts.service + "'", opts.data.byteLength);
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lclient.write(opts.data);
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});
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lclient.on('data', function (chunk) {
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console.log("[<=] local '" + opts.service + "' sent to '" + cid + "' <= ", chunk.byteLength, "bytes");
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console.log(JSON.stringify(chunk.toString()));
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wstunneler.send(pack(opts, chunk), { binary: true });
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});
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lclient.on('error', function (err) {
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console.error("[error] local '" + opts.service + "' '" + cid + "'");
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console.error(err);
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delete localclients[cid];
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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});
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lclient.on('end', function () {
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console.log("[end] local '" + opts.service + "' '" + cid + "'");
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delete localclients[cid];
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wstunneler.send(pack(opts, Buffer.from('|__END__|'), 'end'), { binary: true });
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});
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}
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, onend: function (opts) {
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var cid = addrToId(opts);
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console.log("[end] '" + cid + "'");
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handlers._onend(cid, opts);
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}
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, onerror: function (opts) {
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var cid = addrToId(opts);
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console.log("[error] '" + cid + "'", opts.code || '', opts.message);
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handlers._onend(cid);
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}
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, _onend: function (cid) {
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if (localclients[cid]) {
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localclients[cid].end();
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}
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delete localclients[cid];
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}
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return;
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}
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};
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var machine = require('tunnel-packer').create(handlers);
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wstunneler.on('message', machine.fns.addChunk);
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}
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function endWithError() {
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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}
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wstunneler.on('open', onOpen);
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if (localclients[cid]) {
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console.log("[=>] received data from '" + cid + "' =>", opts.data.byteLength);
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localclients[cid].write(opts.data);
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return;
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}
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else if ('http' === service) {
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str = opts.data.toString();
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m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
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servername = (m && m[1].toLowerCase() || '').split(':')[0];
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}
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else if ('https' === service) {
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servername = sni(opts.data);
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}
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else {
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endWithError();
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return;
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}
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wstunneler.on('close', function () {
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console.log('retry on close');
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setTimeout(run, 5000);
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});
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if (!servername) {
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console.warn("|__ERROR__| no servername found for '" + cid + "'");
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console.warn(opts.data.toString());
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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return;
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}
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console.log("servername: '" + servername + "'");
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lclient = localclients[cid] = net.createConnection({ port: port, host: '127.0.0.1' }, function () {
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lclient.on('data', function (chunk) {
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console.log("[<=] local '" + opts.service + "' sent to '" + cid + "' <= ", chunk.byteLength, "bytes");
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console.log(JSON.stringify(chunk.toString()));
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wstunneler.send(pack(opts, chunk), { binary: true });
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});
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lclient.on('error', function (err) {
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console.error("[error] local '" + opts.service + "' '" + cid + "'");
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console.error(err);
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delete localclients[cid];
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wstunneler.send(pack(opts, Buffer.from('|__ERROR__|'), 'error'), { binary: true });
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});
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lclient.on('end', function () {
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console.log("[end] local '" + opts.service + "' '" + cid + "'");
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delete localclients[cid];
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wstunneler.send(pack(opts, Buffer.from('|__END__|'), 'end'), { binary: true });
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});
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console.log("[=>] first packet from tunneler to '" + cid + "' as '" + opts.service + "'", opts.data.byteLength);
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lclient.write(opts.data);
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wstunneler.on('error', function (err) {
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console.error("[error] will retry on 'close'");
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console.error(err);
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});
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}
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var machine = require('tunnel-packer').create({ onMessage: onMessage });
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wstunneler.on('message', machine.fns.addChunk);
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wstunneler.on('close', function () {
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console.log('end');
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});
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});
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run();
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}());
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